vk_put_projects_53585a63b2d6

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

With no annotations, the description must carry the burden. It discloses that authentication is required and describes multipart form data handling, but it does not mention response format, idempotency, or side effects like overwriting an existing background. This is moderate transparency but not comprehensive.

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 front-loaded, but it redundantly repeats 'Upload a project background' twice at the beginning. This unnecessary repetition makes it less concise than it could be.

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 tool has no output schema and no annotations, so the description should explain return values and side effects. It adequately covers input details and authentication, but omits what the response looks like, whether it overwrites existing backgrounds, and prerequisites like project existence. This leaves clear 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 baseline is 3. The description adds value by explaining aliases (camelCase/snake_case), top-level path/query parameters, and multi-file arrays—details not fully present in the schema. However, it repeats some schema info about file object shape, so not a 5.

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 'Upload a project background' and explicitly names the REST endpoint PUT /projects/{id}/backgrounds/upload, which distinguishes it from sibling vk_put_projects_* tools. The verb+resource is specific 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 on when to use: it is for uploading a project background via multipart form data. It also explains parameter handling (aliases, top-level fields) but does not explicitly mention alternatives or when not to use, so it misses the full 5.

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