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

With no annotations, the description carries full burden. It discloses the recursive behavior, which is useful, but does not state what happens if the path already exists, whether it is idempotent, or any failure conditions.

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?

One short, front-loaded sentence that delivers all essential information without waste.

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 creation tool with one parameter, the description conveys the core behavior. However, with no output schema and no annotations, it omits edge-case behavior like when the directory already exists, making it slightly 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 input schema already documents the single 'path' parameter with a clear description, and the tool description adds no additional parameter semantics. Baseline 3 applies due to high schema coverage.

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 the specific verb 'Create' and identifies the resource 'directory path', plus the recursive behavior. This clearly distinguishes it from sibling tools like delete_directory and list_directory.

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 versus alternatives is provided, but the description's phrasing implies its purpose as the directory creation tool. It does not mention prerequisites or scenarios where a different tool would be preferred.

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 carries the burden of explaining destructive behavior. It mentions 'optionally all of its contents', which hints at recursive deletion, but it does not disclose that deletion is permanent, that recursive defaults to true, or what happens when a non-empty directory is targeted without recursive. This is a significant gap for a deletion tool.

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 single concise sentence with no wasted words. It conveys the core purpose and the optional recursive behavior without redundancy.

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?

While the tool is simple, the description lacks critical context for safe usage. It does not mention that the default recursive value is true, which means contents are deleted by default, nor does it describe return values or error conditions. For a destructive operation, this leaves the agent under-informed.

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 100%, so the baseline is 3. The description's phrase 'optionally all of its contents' loosely maps to the recursive parameter, but it adds no new details beyond the schema's own description. The schema already explains both parameters adequately.

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 action ('Delete a directory') and the resource (a directory), which is specific and unambiguous. It also mentions the optional recursive behavior, and the sibling tools include delete_file and create_directory, making it easy to distinguish.

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 versus alternatives. It does not mention exclusions (e.g., non-empty directories without recursive), prerequisites, or safety checks. The only implicit clue is the word 'directory', but there is no direct comparison to delete_file or other tools.

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 carries the full burden of behavioral disclosure. It simply restates the operation ('Delete a specific file') without revealing that deletion is irreversible, what error conditions may occur, or whether special permissions are required.

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 single, concise sentence with the key information front-loaded. Every word contributes to the meaning, with no unnecessary elaboration.

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?

This is a destructive tool with no annotations and no output schema, yet the description only states the basic action. It lacks critical context such as permanence, usage alternatives, and preconditions, making it under-specified for an agent to use safely.

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 already describes the single 'path' parameter with 100% coverage. The description adds no additional meaning beyond the schema, so the baseline score is appropriate.

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 action ('Delete') and the specific resource ('a specific file from the filesystem'). It effectively distinguishes this tool from sibling tools like delete_directory and read_file by explicitly targeting files.

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. It does not mention delete_directory for directories or caution when deleting, leaving the agent to infer usage from the name alone.

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 carries the full burden of behavioral disclosure. It accurately states the core mutation (replacing text), but omits important behavioral details such as what happens when the target text is not found, whether changes are reversible, and any permission requirements. The replaceAll semantics are left to the schema.

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 single, well-structured sentence with no filler or redundant content. It front-loads the key verb 'Update' and the resource 'existing file'.

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 edit tool, the description plus schema are mostly sufficient. However, with no annotations and no output schema, the description lacks information about failure behavior (e.g., target not found) and return values, which an agent would need to fully understand the tool's 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?

Schema description coverage is 100%, with clear descriptions for path, target, replaceAll, and replacement. The tool description only restates 'target text' and 'new text', adding no additional semantic detail beyond what the schema already provides, so the baseline of 3 is appropriate.

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 a specific action ('Update an existing file') with a specific method ('replacing target text with new text'), distinguishing it from sibling tools like write_file or create_directory. The verb and resource are unambiguous.

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 phrase 'existing file' clearly indicates this tool is for modifying existing files, not creating or reading. This provides clear context for when to use it, though it does not explicitly name alternative tools or exclusion scenarios.

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 carries the burden of disclosing behavior. It explicitly states that this is a metadata retrieval operation and lists the type of information returned, implying a safe, read-only action. While it doesn't cover error cases or permissions, the simplicity of the operation makes this sufficient.

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 single, well-structured sentence that delivers the essential information without unnecessary words. It is front-loaded with the main verb and object, making it immediately understandable.

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 tool with one parameter and no output schema, the description adequately covers the purpose and expected outcome. It could mention the return format or potential errors, but these are not essential given the tool's simplicity and the absence of an output schema.

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 already provides a clear description for the only parameter ('path'), achieving 100% coverage. The tool description does not add additional semantic details about the path parameter beyond what the schema states, so it meets the baseline but does not exceed it.

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 with a specific verb ('Get metadata') and resource ('file or directory'), and provides concrete examples of what is returned (size, modification date, path stats). This distinguishes it from sibling tools that read content, write, delete, or list directories.

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 implies the use case: when metadata rather than content is needed, this tool is appropriate. It does not explicitly name alternatives like 'read_file' for content, but the context is clear enough for an agent to infer the correct choice.

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 carries the full burden. It discloses the output metadata (size, isDirectory, modified date) but does not state edge-case behavior such as error handling for nonexistent paths, whether hidden files are included, or whether it follows symlinks. The verb 'list' implies a non-destructive read, but this is not explicitly confirmed.

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 single concise sentence that front-loads the action and resource, then immediately provides the useful metadata detail. No wasted words.

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 single-parameter directory listing tool, the description adequately covers purpose and expected output. It lacks edge-case behavior, but the tool's simplicity and the metadata mention make it sufficiently complete for most use cases. No output schema exists, so the description partially fills that gap.

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 100% and the description does not add meaningful parameter semantics beyond the schema. The schema already states 'Path to the directory to list', and the description only repeats the directory concept. No additional constraints, formats, or usage details are provided.

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 'List all items inside a directory with metadata (size, isDirectory, modified date).' This is a specific verb+resource combination that distinguishes it from siblings like read_file (reads file content) and get_file_info (single item info). The scope is unambiguous.

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 implies when to use: whenever you need to enumerate directory contents. It does not explicitly mention alternatives or exclusions, but the purpose is clear enough that an agent can infer appropriate usage. Sibling tools like search_files and get_file_info serve different purposes, making the intended use obvious.

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 of behavioral disclosure. It only states the action and gives no details about overwrite behavior (though the schema has an 'overwrite' parameter with default false), failure conditions, side effects, or any contextual behavior. This is insufficient for a mutation tool.

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 single sentence, concise and front-loaded. Every word is useful with no redundancy or unnecessary detail.

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 tool with 3 parameters and no output schema, the description is adequate but lacks any mention of return values, error handling, or overwrite semantics. It does not go beyond a basic statement of purpose, leaving some context 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?

Schema description coverage is 100%, with each parameter (source, destination, overwrite) having a description. The tool description itself adds no additional explanation of parameter meanings or constraints, so it does not exceed the baseline of 3.

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 action ('Move or rename') and the resource ('file or directory'), which distinguishes it from sibling tools like read_file, write_file, and delete_file. The verb is specific and the scope is 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?

The purpose statement implies usage (when you want to move/rename a file or directory), but it does not explicitly mention alternatives or exclusions. There is no guidance on when not to use this tool or how it relates to siblings, so only implied usage is present.

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 carry the full burden of behavioral disclosure. It adds that the tool reads 'complete content' and 'text file,' which hints at non-truncation and file type limitations, but it does not explicitly state that it is non-destructive, how it handles errors, or any size limits—information needed for an agent to fully understand the tool's 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 a single, short sentence that is immediately clear and free of any unnecessary words or filler. Every word serves a purpose, earning a perfect score for conciseness and structure.

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 simplicity (a basic read operation) and the schema covering all parameters, the description is minimally adequate. However, without an output schema and with no mention of return value or error scenarios, it lacks some completeness that would be expected for a tool with no annotations. It is sufficient but leaves room for improvement.

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 already provides 100% coverage with descriptions for both path and encoding, so the baseline is 3. The description adds minimal extra meaning by implying that the path must be a single text file, but it does not elaborate on the encoding parameter or provide additional usage details 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 description clearly states the action ('read') and the resource ('a single text file'), with the word 'single' and 'complete content' distinguishing it from read_multiple_files and other file operations. This is a specific verb+resource pairing that leaves no ambiguity about what the tool does.

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 gives no explicit guidance on when to use this tool versus alternatives like read_multiple_files or search_files. The word 'single' implies it is for one file, but it does not explicitly state the exclusion of multiple files or point to the alternative, so the usage context is not clear.

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 provided, the description carries full responsibility for behavioral disclosure. It fails to mention behavior on missing files, partial failures, return format, size limits, or any side effects, which is a notable gap for a batch operation.

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 single, direct sentence with no wasted words. It is front-loaded with the action and resource, 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?

While the tool has one simple parameter and no output schema, the description lacks information about return format or error handling, which is relevant for a batch operation. It is minimally viable but leaves some ambiguity about what the response looks like.

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 full 100% coverage for the single 'paths' parameter, so the description does not need to add much. The description's 'multiple files' aligns with the schema's 'Array of file paths', but adds no extra semantic detail beyond what the schema already conveys.

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 reads the contents of multiple files in one request, distinguishing it from the sibling read_file tool by the 'multiple files' and 'single request' qualifiers.

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 implies usage for batch reading via 'multiple files in a single request', but it does not explicitly state when to prefer this over read_file or exclude scenarios like needing single file reads. No alternatives are named.

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 of behavioral disclosure. It only states the basic operation (search by glob pattern) without mentioning return format, recursion behavior, error handling, or whether the search is read-only. This leaves the agent with significant uncertainty.

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 single, well-structured sentence that front-loads the action ('Search for files') and then specifies the resource and criteria. Every word contributes to clarity, with no superfluous 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?

This is a simple 2-parameter tool with no output schema, so the description should explain what the tool returns (e.g., a list of matching file paths) and clarify whether the search is recursive. It does neither, leaving the agent to infer key usage details.

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 already provides full descriptions for both parameters (directory, pattern) with an example for pattern. The tool description adds no extra parameter semantics, but since schema coverage is 100%, the baseline score of 3 is appropriate.

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 'search' with a clear resource ('files within a directory') and criteria ('matching a glob pattern'). This distinguishes it from sibling tools like read_file, write_file, and list_directory, making the purpose immediately clear.

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 implies usage when one needs to locate files by pattern, but it does not provide explicit guidance on when to prefer this over sibling tools like list_directory (for listing entries) or read_file (for reading content). No exclusions or alternatives are named.

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 provided, the description carries the full burden of disclosing behavioral traits. It does explicitly state the destructive overwrite behavior, which is critical for a mutation tool. However, it omits other important details such as whether parent directories are created, what happens on failure, or any permission requirements, leaving a moderate transparency gap.

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 single, clear sentence. It is front-loaded with the core action and avoids redundancy or filler, making it highly efficient.

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 simplicity of the tool and rich schema, the description is adequate but not complete. It does not mention return values or error behavior (since no output schema exists), and it lacks usage guidance relative to sibling tools. It meets the minimum viable standard but leaves some 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?

Schema description coverage is 100%, so the baseline is 3. The description adds minimal semantics beyond the schema—it mentions 'text content' but the schema already describes content as 'Text content to write into the file.' No additional parameter meaning is supplied.

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 ('Create'/'overwrite') and explicit resource ('file'), making the tool's primary function unmistakable. It also naturally distinguishes this from sibling tools like read_file and edit_file by focusing solely on writing full text content.

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 clearly states the two use cases (create new or overwrite existing), giving clear context for when to use the tool. However, it does not explicitly mention alternatives or exclusions (e.g., 'for incremental edits, use edit_file'), so the guidance is implied rather than explicit.

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