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Skill Provenance Verify

skill_verify
Read-onlyIdempotent

Check that skill and instruction files have valid Sigstore provenance, preventing use of modified or malicious content.

Instructions

Verify Sigstore provenance for skill and instruction files.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
pathNoPath to a skill/instruction file or directory to verify..

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

The description is consistent with annotations (readOnlyHint=true, destructiveHint=false) but adds no additional behavioral context beyond the annotations. It does not mention error states, output format, 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.

Conciseness5/5

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

The description is a single concise sentence that immediately conveys the tool's purpose. No extraneous words or filler.

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

Completeness5/5

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

For a simple verification tool with one parameter (fully described in schema), full annotations, and an output schema (not shown but present), the description provides sufficient context. No significant gaps remain.

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

Parameters3/5

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

Input schema has 100% description coverage for the single parameter. The tool description adds no extra semantics beyond what the schema already provides. Baseline 3 is appropriate.

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

Purpose5/5

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

The description clearly states the verb 'Verify' and the specific resource 'Sigstore provenance for skill and instruction files'. It distinguishes from siblings like 'skill_scan' or 'verify' by specifying the Sigstore provenance aspect.

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

Usage Guidelines2/5

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

No information is provided about when to use this tool versus alternatives. There is no mention of prerequisites, limitations, or selection criteria relative to sibling tools such as 'skill_scan' or 'verify'.

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

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