fossa_update_release_group_release

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

Beyond the annotations, the description discloses the environment variable requirement, the mandatory title quirk, the structure of project entries, and the rejection of same-project-in-both-lists. This adds significant operational detail that the annotations do not provide. No contradiction with the annotations was found.

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 dense but every sentence adds value, starting with a one-sentence summary, then a write warning, followed by parameter behavior and an edge-case rejection rule. No fluff or redundant repetition of schema fields. It is well-structured and appropriately sized for the tool's complexity.

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 (write operation, 5 parameters, nested object structure, an API quirk), the description covers all essential aspects: purpose, write permission, parameter semantics, and a key edge case. An output schema exists, so the description does not need to explain return values. This is complete for an agent to invoke the tool correctly.

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, but the description compensates by explaining the semantic meaning of the non-obvious parameters: 'projects' entries (projectId, branch, revisionId) and 'projects_to_delete' (project locators). It also clarifies that 'title' is required even when unchanged. The remaining parameters (release_group_id, release_id) are self-explanatory from their names. This is strong compensation for the missing 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 opens with a clear, specific verb and resource: 'Rename a release in a FOSSA release group and add, repin, or remove the projects in it.' This distinguishes it from sibling tools like create_delete/get release group releases, and also from the separate 'fossa_update_release_group' tool. The action 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 provides clear context for when to use the tool, including the write requirement (FOSSA_ALLOW_WRITES=true) and the API quirk about needing the title parameter even when only changing projects. It also explains the reject condition for overlapping projects. However, it does not explicitly name alternatives or state when not to use this tool, so it falls short of a 5.

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