index_documents

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 mentions embedding and indexing but doesn't clarify whether this is a write operation, what permissions are needed, if it's idempotent, or what happens on failure. For a tool that likely modifies data, this is a significant gap in transparency.

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 extremely concise—a single sentence with zero wasted words. It's front-loaded with the core purpose and efficiently communicates the essential action without 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?

Given the complexity of embedding and indexing operations, no annotations, no output schema, and 0% schema description coverage, the description is incomplete. It lacks crucial details about behavior, error handling, return values, and how it differs from sibling tools, making it inadequate for safe and effective use.

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 0%, so the description must compensate, but it adds no information about the 'docs' parameter beyond what the schema structure implies. The description doesn't explain what 'docs' should contain, how documents are processed, or any constraints. With 1 parameter and no schema descriptions, baseline 3 is appropriate as the description doesn't add meaningful semantic context.

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 ('Embed and index') and the target resource ('documents into Chroma'), providing a specific verb+resource combination. However, it doesn't explicitly differentiate from sibling tools like 'embed_text' or 'vector_search', which likely handle different aspects of the Chroma workflow.

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 no guidance on when to use this tool versus alternatives like 'embed_text' or 'vector_search'. There's no mention of prerequisites, use cases, or exclusions, leaving the agent to infer usage from the tool name alone.

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