Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations exist, so the description must disclose behavior. It does not mention what happens if input_path is invalid, whether files are overwritten, processing time, or error handling. Very minimal behavioral information.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise, with a single-sentence purpose followed by parameter list. It is front-loaded and contains no fluff, though parameter descriptions could be more detailed.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

No output schema or annotations, so the description should explain return values and side effects. It only says '添加结果信息' (add result info), which is vague. Missing error handling, default behavior details, and outcome for optional parameters.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate. It provides basic descriptions for all 6 parameters (e.g., '输入视频文件路径' for input_path), adding some meaning beyond schema names, but lacks details on accepted formats, constraints, or interactions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states '为视频添加水印' (Add watermark to video), which is a specific verb+resource combination. Among siblings, no other tool adds watermarks, so it is distinct.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool vs alternatives, no prerequisites, limitations, or exclusions provided. The description simply lists parameters without usage context.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations present, the description carries full responsibility for behavioral disclosure. It does not explain whether the tool creates a new file or modifies the input, nor does it mention side effects like audio pitch preservation (though the parameter is listed). The response format is vague ('速度调整结果信息'), lacking detail on output behavior.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is remarkably concise, consisting of a clear one-line purpose followed by a bulleted parameter list. Every sentence is functional with no redundant information, making it easy to parse quickly.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description covers the core parameters and returns a result message, but it omits practical details such as the default output path when 'output_path' is not provided, and it does not explain the relationship between speed and audio pitch behavior. Given the tool's simplicity, this is adequate but not exhaustive.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema has 0% parameter descriptions, so the description adds critical meaning by explaining each parameter, e.g., 'speed' is a multiplier with examples (0.5, 1.0, 2.0) and 'keep_audio_pitch' is described as preserving audio pitch. This effectively compensates for the schema's lack of documentation.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description '改变视频播放速度' clearly states the tool's function as changing video playback speed. This verb+resource description is specific and distinguishes it from sibling tools that perform other operations like compression, conversion, or cutting.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives like 'cut_video_segment' or 'resize_video'. There is no mention of use cases, prerequisites, or conditions, leaving the agent without contextual selection criteria.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, and the description does not disclose any behavioral traits or side effects. It only states it returns a report without detailing what the report contains or any implications of running it.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is very short (two lines plus a returns line), with no wasted words. It is efficient but could benefit from slight structuring (e.g., separating purpose and output).

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no parameters, no output schema, and no annotations, the description minimally covers the tool's function and return. It tells what it does and what it returns, but lacks details on the format or content of the report.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has no parameters, so schema_description_coverage is 100%. Baseline is 3 since the description does not add parameter information, but none is needed.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses a specific verb 'check' and clearly identifies the resource 'hardware acceleration options'. It distinguishes itself from sibling tools, which are primarily video/audio processing tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool or when not to use it. No mention of alternatives or context for its use.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are present, and the description only lists parameters and a vague return statement ('compression result info'). No disclosure of side effects, error behavior, or hardware acceleration implications.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Structured as a docstring with Args and Returns, but slightly verbose with Chinese translations. Purpose is front-loaded, but no extraneous content.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Explains all parameters but lacks detail on return values, error handling, or behavioral trade-offs between quality and target_size_mb. Incomplete for a tool with 6 parameters.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema coverage, the description adds meaningful explanations for each parameter (e.g., quality choices, optional output path), compensating well for the schema's lack of detail.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'compress video file' and lists parameters, but it does not distinguish from the sibling compress_video_with_qsv, leading to ambiguity about when to use each.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool vs alternatives like compress_video_with_qsv or other video tools. No prerequisites or context provided.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations and description lacks behavioral traits like driver dependency, fallback behavior, or performance implications beyond mentioning hardware acceleration.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Short docstring format, efficient with minimal prose, though parameter listing could be more streamlined.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 5 parameters, no output schema, and no annotations, the description omits return values, error handling, and prerequisites, leaving gaps.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Parameter list repeats schema info with no added constraints, examples, or formats; schema coverage is 0% and description does not compensate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states it compresses video using Intel QSV hardware acceleration, distinguishing from generic compress_video and convert_video_with_qsv siblings.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use QSV vs software encoding or contrast with similar tools; usage is implied but not clarified.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Without annotations, the description carries the full burden but provides minimal transparency. It only states the basic conversion functionality, omitting details on overwriting behavior, supported codecs, error handling, or response format.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise, using a bullet-like list format for parameters. It avoids redundancy despite being in Chinese, and each line serves a purpose. However, it could be slightly more structured with clearer separation.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the absence of annotations and output schema, the description is incomplete. It does not explain return values, side effects, or preconditions (e.g., file existence). A tool with 5 parameters requires more comprehensive behavioral context.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, and the description compensates by explaining each parameter with examples (e.g., output_format: 'mp3, wav, aac, flac, ogg', bitrate: '128k, 192k, 320k'). This adds significant meaning beyond the schema's type and default values.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'convert audio format' as the purpose. It specifies the resource (audio) and action (convert format), but does not differentiate from sibling tools like 'extract_audio_from_video' or 'convert_video_format', limiting its distinctiveness.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No usage guidelines are provided. There is no indication of when to use this tool versus alternatives such as 'compress_video' or 'extract_audio_segment'. The description fails to offer context or prerequisites.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It does not disclose behavioral traits such as whether the input file is modified, the output location, or any side effects. The description focuses on parameters but lacks explicit behavioral context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is well-structured as a docstring with clear sections for Args and Returns. It is efficient and front-loaded, though the mixture of Chinese and English text is slightly inconsistent.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the high parameter count (8), no output schema, and lack of annotations, the description is incomplete. It does not define the return type or discuss how hardware acceleration options affect behavior. The sibling list suggests more context is needed.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema coverage, the description adds meaning to all 8 parameters by listing them with explanations and examples (e.g., formats and codecs). This compensates well for the missing schema descriptions, though the 'quality' parameter could be more precise.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's action (convert video format) and the resource (video files). However, it does not differentiate from sibling tools that also manipulate video files (e.g., compress_video, resize_video), making it slightly generic.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool, when not to use it, or how it compares to alternatives. Given the extensive sibling list, this omission is significant for the agent's decision-making.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, and the description lacks behavioral details such as whether the operation is destructive, what happens when output_path is null, rate limits, or permissions required. The description focuses on parameters but does not disclose the tool's side effects or return value structure.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise, covering purpose and parameters in a single block with Args/Returns sections. It is front-loaded with the core purpose. No extraneous text. Slight improvement could be made by structuring parameter descriptions as a list for readability.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a 6-parameter tool with no output schema and no annotations, the description adequately explains parameter usage but lacks return value format details, error handling, hardware prerequisites, and behavioral context. Given complexity, it is partially complete but missing important contextual elements.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema has 0% description coverage, so the description must compensate fully. It provides Chinese explanations for each parameter, including acceptable values for output_format, qsv_encoder, quality, and qsv_preset. This adds significant meaning beyond the bare schema types and defaults.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description explicitly states '使用Intel QSV硬件加速转换视频' (Convert video using Intel QSV hardware acceleration), which is a specific verb+resource with technology identifier. It clearly distinguishes from siblings like convert_video_format (no QSV) and compress_video_with_qsv (compression instead of conversion).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description mentions QSV hardware acceleration, implying it should be used when that acceleration is desired, but it does not explicitly state when to use this tool versus alternatives like convert_video_format or compress_video_with_qsv. No when-not-to-use or prerequisite conditions are provided.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so description carries full burden. It only lists parameters and a vague return description ('切割结果信息'). Does not disclose behavior such as file creation, format support, or side effects.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a concise bullet list in Chinese, with each parameter on its own line. It is front-loaded with the purpose statement. No unnecessary sentences, though could be slightly more structured.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no output schema and only a vague return description, the description is incomplete. It does not mention supported audio formats, error handling, or prerequisites. The tool is simple but more context is needed for reliable use.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema has 0% description coverage, so description compensates well. It explains each parameter's meaning, format (HH:MM:SS), and notes mutual exclusivity of end_time and duration. This adds clear value beyond the schema structure.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool cuts an audio segment ('切割音频片段'). It specifies the verb and resource, but does not differentiate it from sibling tools like cut_video_segment or extract_audio_segment, lacking scope distinction.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool versus alternatives. For example, it does not explain when to choose cut_audio_segment over extract_audio_segment or cut_video_segment. No when/when-not context provided.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations are absent, so the description must carry the full burden. It reveals that precise_cut requires re-encoding, and hardware acceleration options exist, but does not specify whether the operation is destructive (modifies original), what happens without output_path, or any side effects. The return value is vaguely described as '切割结果信息'.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a parameter list with a brief purpose line. It is concise but lacks a high-level summary of the tool's behavior. The structure (Args/Returns) is clear, but the Returns section is too vague. Some sentences could be integrated into a more narrative form.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description does not fully explain the tool's workflow or outputs. With no output schema, the return value description is minimal. It omits important behavioral details like default output behavior, error handling, and supported video formats. For a tool with 8 parameters and no annotations, more contextual completeness is needed.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Despite 0% schema coverage, the description adds meaningful context beyond the schema: explains time format (HH:MM:SS), mutual exclusivity of end_time/duration, and effect of precise_cut (re-encoding, slower but precise). However, hwaccel_type is just listed with examples without guidance on selection.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's function ('切割视频片段' - cut video segment) and the verb 'cut' combined with 'video segment' makes the purpose unambiguous. It distinguishes from sibling tools like 'cut_audio_segment' and 'merge_videos', but does not elaborate on the scope (e.g., from a larger file).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use this tool vs alternatives. Given many video-related sibling tools (compress, convert, merge, etc.), it fails to provide context for selection. The description does not mention prerequisites, typical use cases, or comparison to other cutting methods.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so description must cover behavioral traits. It lacks information on side effects (e.g., does it modify the original file?), required permissions, or constraints on input formats.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Very concise and front-loaded: one line purpose, then a clear list of parameters. No unnecessary information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Covers basic usage with 4 parameters, but lacks details on return value format, error handling, and edge cases. No output schema, so description should explain what '提取结果信息' contains.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Description adds meaning beyond the schema by explaining each parameter in Chinese, including examples for audio_format and audio_quality, and default behavior for output_path. Schema has 0% coverage, so this is valuable.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states 'extract audio from video file' (从视频文件中提取音频), with a specific verb and resource. It is distinct from sibling tools like convert_audio_format or extract_audio_segment.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool versus siblings, such as extract_audio_segment. The description does not mention that it extracts the full audio track, nor does it provide prerequisites or exclusions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description must disclose behavioral traits, but it only says 'extract audio from video' and mentions returning 'extraction result info'. It does not state whether the video file is modified, what happens on invalid inputs (e.g., start_time beyond video duration), or any side effects. For a read-like operation, it should be clearer about non-destructiveness.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is short and includes a purpose line followed by a parameter list, which is reasonably structured. However, the parameter descriptions are terse (one word each), and the returns section is vague. It is not overly verbose, but could be more informative without adding much length.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has 5 parameters (3 required) and no output schema, the description should provide more context on expected return values, error handling, and usage examples. The return info is too vague ('提取结果信息'), and no constraints on parameter values (e.g., positive duration) are mentioned. For a tool of moderate complexity, the description is incomplete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The description provides a parameter list with brief Chinese descriptions (e.g., '输入视频文件路径' for video_path), adding basic meaning beyond schema titles. However, it lacks detail on format constraints (e.g., time format is implied but not explicitly stated in the description, though schema mentions 'HH:MM:SS' in title). Default values for output_path and audio_format are not mentioned in description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: extracting an audio segment from a video based on time range. It uses a specific verb (extract) and resource (audio segment from video), which is distinct from sibling tools like 'extract_audio_from_video' that likely extracts the entire audio track. However, it does not explicitly differentiate itself from that sibling, leaving some ambiguity.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives. The description does not include prerequisites, constraints (e.g., supported video formats), or scenarios where this tool is not suitable. An agent has no context for choosing this tool over others like 'cut_audio_segment' or 'extract_audio_from_video'.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided. The description does not disclose behavioral traits like side effects, required permissions, or performance implications. Return type mentioned vaguely as '提取结果信息'.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Moderately concise with a clear structure (Args, Returns). Could be shortened slightly, but no unnecessary verbosity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Covers parameter semantics adequately but lacks usage context, behavioral details, and output schema specification. Adequate but not fully informative.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0%, but the description provides meaning for each parameter in the Args section (e.g., fps: 提取帧率). This compensates well for the lack of schema descriptions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description '从视频中提取帧图片' clearly states the action (extract frames) and resource (video), and distinguishes from sibling tools like extract_audio_from_video.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool vs alternatives such as cut_video_segment or convert_video_format. The description only lists parameters.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description must disclose behavior. It only says 'get video file information' without details on what information is returned, performance implications, or side effects. Minimal behavioral context is offered.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is very short and includes structured Args and Returns sections. It is front-loaded with the main purpose. No extraneous information is present, though the Returns section is vague.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple info retrieval tool with one parameter and no output schema, the description is adequate but lacks details on return format, supported paths, or file constraints. More context would improve completeness.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0% for the single parameter 'video_path', but the description's Args section explains it as 'video file path', adding necessary meaning beyond the schema's bare type definition.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'get' and the resource 'video file information', making the tool's purpose unambiguous. It distinguishes itself from sibling tools, which are all processing/editing tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description does not provide explicit guidance on when to use this tool versus alternatives. It merely states what it does, leaving the agent to infer usage context from the tool's name and siblings.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so description must disclose behavior. It mentions merge methods but does not state whether input files are altered, expected behavior on invalid paths, or whether output overwrites existing files. For a mutation tool, these are significant gaps.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Description is concise but structured with Args and Returns sections. While short, it covers key aspects without redundancy. The Chinese is appropriate for the target audience. Slightly more detail on merge_method could improve without bloat.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no output schema, the Returns section is vague ('merge result information'). For a tool with 3 params (1 required), it covers parameter purposes but lacks error behavior, file format support, or limitations. Compared to siblings, it is minimally complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0%, so description adds essential meaning. It explains audio_paths is a comma-separated string list, output_path is optional, and merge_method has options 'concat' (default) and 'mix'. This clarifies the string type and default beyond schema. However, it could add format constraints.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool merges multiple audio files, with merge methods (concat/mix) distinguishing it from siblings like merge_videos and convert_audio_format. The verb 'merge' and resource 'audio files' are explicit.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use merge_audios vs alternatives (e.g., merge_videos, extract_audio_from_video). The merge_method options are listed but no criteria for choosing concat vs mix. No prerequisites or exclusions mentioned.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided. Description only lists parameters and fails to disclose important behavioral traits such as network dependency, potential duration, or error conditions. Does not warn about potential side effects (e.g., file creation).

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Extremely concise: one-line summary followed by clean Args section. No redundant sentences. Every piece of text contributes value.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Despite a moderate number of sibling tools, the description lacks details about return format, error handling, or operation duration. Given the tool's complexity (streaming conversion), the description is too minimal to fully inform an AI agent.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema description coverage, the description effectively compensates by explaining each parameter: m3u8_url as 'M3U8 playlist URL', output_path as 'Output MP4 file path', headers with format hint. This adds meaning beyond the schema's type definitions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states '合并M3U8流为MP4文件' (merge M3U8 stream to MP4 file), giving a specific verb and resource. It distinguishes from sibling tools like merge_audios or merge_videos by targeting M3U8 streams.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool versus alternatives (e.g., convert_video_format for local files). No mention of prerequisites like network access or typical use cases.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided. The description only states 'merge' without disclosing if original files are modified, file size limits, error handling, or other behaviors. Minimal behavioral disclosure.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is brief with clear sections (Args, Returns). Every sentence contributes meaningful information without redundancy or fluff.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description lacks details on the return format ('merge result information') and does not mention edge cases, error handling, or prerequisites. Given no output schema, this is insufficient for complete understanding.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0%, so description must compensate. It explains that video_paths is a comma-separated list, output_path is optional, and merge_method has two options (concat vs filter). This adds valuable meaning beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The title and description clearly state the tool merges multiple video files. However, it does not differentiate from sibling tools like merge_audios or merge_m3u8_to_mp4, though among video tools, it is distinct.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool versus alternatives. Sibling tools perform different actions (compress, convert, cut), so explicit context would be helpful, but the description provides none.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description bears full responsibility for disclosing behavior. It only states the action without mentioning side effects (e.g., file overwriting), required permissions, or performance implications. The return value description is minimal ('调整结果信息' – adjustment result info) and lacks specifics.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is short but not optimally structured. It begins with a purpose line followed by an Args/Returns section, which is acceptable. However, it could be more concise by integrating the parameter explanations into the purpose statement, and the Returns section adds little value.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 5 parameters, no output schema, and no annotations, the description is incomplete. It does not explain default behavior for optional parameters, error handling, or the output file's location when output_path is null. The agent lacks sufficient context to use the tool reliably.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The description lists parameters with brief Chinese labels that mirror the schema titles (e.g., '输入视频文件路径' for input_path). No additional context is provided about valid ranges for width/height, the effect of keep_aspect_ratio, or how output_path is used when omitted. Schema coverage is 0%, so the description should compensate but fails to do so.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states '调整视频分辨率' (adjust video resolution), which directly conveys the tool's function. Among siblings, resizing is distinct from compressing, converting, or extracting, so purpose is clear, though no explicit differentiation is provided.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives like compress_video or convert_video_format. There is no mention of prerequisites, limitations, or appropriate contexts for resizing.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description must bear the full burden. It lists parameters and defaults but lacks disclaimers about destructive actions (e.g., overwriting output), permission needs, or failure modes. The return is vague as 'result info'.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is well-structured in a docstring format with Args and Returns sections. It is concise yet informative, providing a clear parameter list. It is front-loaded with the purpose and avoids unnecessary prose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (7 parameters, no output schema), the description covers all parameters but lacks examples, error handling, or detailed return value specification. It is adequate for basic usage but leaves gaps for nuanced scenarios like invalid inputs or output behavior.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema provides no descriptions for any parameter (0% coverage), but the description adds meaningful explanations for all 7 parameters, including time format, default width, recommended fps, and quality options. This significantly augments the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool converts video to GIF animation, which is a specific verb and resource. While it distinguishes from siblings like convert_video_format that may also handle GIF output, it lacks explicit differentiation, but the purpose is evident.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives like convert_video_format or extract_frames. There are no prerequisites, context, or exclusions mentioned, leaving the agent without decision support.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.