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

With no annotations provided, the description carries the full burden of behavioral disclosure. It effectively describes key behaviors: the mutation nature ('Insert new paragraphs'), insertion logic (default to end, ordering for same index), and output format ('Returns a git-style diff showing the changes made'). It doesn't cover error conditions or file system implications, but provides substantial operational 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 perfectly front-loaded with the core purpose in the first sentence, followed by operational details and output information. Every sentence adds essential value: insertion logic, default behavior, ordering rules, and return format. There's zero wasted text or 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?

For a mutation tool with no annotations and no output schema, the description does an excellent job covering purpose, behavior, and output format. The main gap is lack of error handling or permission requirements information, but given the tool's moderate complexity and the description's coverage of core functionality, it's substantially 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 description coverage is 100%, so the schema already fully documents both parameters and their nested properties. The description adds some semantic context about paragraph_index behavior ('0-based index', 'inserted in order' for same index), but doesn't provide significant additional meaning beyond what's in the schema descriptions. This meets the baseline for 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 clearly states the specific action ('Insert new paragraphs'), target resource ('into a docx file'), and distinguishes from siblings by focusing on insertion rather than editing existing paragraphs (edit_docx_paragraph), reading (read_docx), or full file writing (write_docx). The verb+resource combination is precise and 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 provides clear context about when to use this tool (for inserting paragraphs with optional positioning) and implicitly distinguishes it from siblings by its specific function. However, it doesn't explicitly state when NOT to use it or name alternative tools for different scenarios, which prevents a perfect score.

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 burden and does well at disclosing key behavioral traits: it specifies the operation preserves formatting of the first run, returns a git-style diff, and has directory restrictions. However, it doesn't mention error handling, performance characteristics, or whether the operation is atomic/reversible.

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 efficiently structured in three sentences: purpose statement, operational details, and constraints. Every sentence earns its place by providing essential information without redundancy. The most important information (what the tool does) is front-loaded.

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 mutation tool with no annotations and no output schema, the description does reasonably well by explaining the operation, formatting behavior, and constraints. However, it doesn't describe the return format ('git-style diff') in detail or mention error conditions. Given the complexity of paragraph-level editing, more behavioral context would be beneficial.

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 100% schema description coverage, the baseline is 3. The description adds minimal value beyond the schema - it mentions 'list of edits with paragraph index and search/replace pairs' which is already fully documented in the schema. No additional parameter semantics or usage nuances are provided beyond what's in the structured fields.

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 specific action ('Make text replacements'), target resource ('specified paragraphs of a docx file'), and scope ('preserves formatting of the first run'). It distinguishes from siblings by focusing on paragraph-level text replacement rather than insertion (edit_docx_insert), reading (read_docx), or full-file writing (write_docx).

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 clear context about when to use this tool ('Only works within allowed directories'), but doesn't explicitly state when to choose alternatives like edit_docx_insert for insertion operations or write_docx for full-file writing. The directory restriction is helpful, but sibling differentiation 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.

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

With no annotations provided, the description carries the full burden and effectively discloses key behavioral traits: it reads complete contents, handles tables and images, converts images to placeholders, uses specific paragraph separators, and includes paragraph indicators. It doesn't mention error handling or performance aspects, but covers core functionality well.

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 appropriately sized with four sentences that each add value: stating the tool's purpose, usage context, output format details, and paragraph indicators. It's front-loaded with the core functionality but could be slightly more streamlined by combining related formatting details.

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 moderate complexity (reading structured documents), no annotations, no output schema, and 100% schema coverage, the description provides good contextual completeness by explaining what content is read, how images are handled, and paragraph formatting. It could benefit from mentioning error cases or return structure, but covers essential usage well.

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 description coverage is 100% (the 'path' parameter is documented as 'Absolute path to target file'), so the baseline is 3. The description adds no additional parameter-specific information beyond what the schema provides, maintaining this adequate baseline.

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 specific action ('Read complete contents'), resource ('docx file'), and scope ('including tables and images'), distinguishing it from sibling tools like edit_docx_insert or write_docx that modify rather than read 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?

It provides explicit guidance on when to use this tool ('when you want to read file endswith .docx'), distinguishing it from alternatives by focusing on reading rather than editing or writing operations, though it doesn't explicitly name sibling 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 provided, the description carries the full burden of behavioral disclosure. It correctly identifies this as a creation/write operation and warns against using it for editing, but doesn't mention important behavioral aspects like file overwriting behavior, permissions required, error conditions, or what happens if the path doesn't exist. The description adds some value but leaves 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?

The description is appropriately concise with two sentences that each serve a clear purpose: the first states the core functionality, the second provides important usage guidance. There's no wasted verbiage, though the typo ('exisiting') slightly detracts from professionalism.

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 file creation tool with no annotations and no output schema, the description provides basic purpose and usage guidance but lacks important context about what the tool returns, error handling, file system implications, or creation confirmation. The schema covers parameters well, but the overall tool behavior remains under-specified.

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 100% schema description coverage, the schema already documents both parameters thoroughly. The description doesn't add any meaningful parameter semantics beyond what's in the schema - it mentions 'given content' but doesn't elaborate on the content parameter's formatting requirements beyond what the schema already specifies about tables and line breaks.

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 specific action ('Create a new docx file') and resource ('with given content'), and explicitly distinguishes it from sibling tools by noting that editing existing files is not recommended. This provides clear differentiation from edit_docx_insert, edit_docx_paragraph, and read_docx.

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 explicit guidance on when NOT to use this tool ('Editing existing docx file with this tool is not recommended'), which clearly distinguishes it from the edit_* sibling tools. This gives the agent clear direction about appropriate use cases versus alternatives.

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