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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered and the description adds nothing on permissions or side effects. It does disclose the returned field set, which is mild behavioral context, but says nothing about missing-document behavior or body truncation.

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?

A single compact sentence with the verb and return shape front-loaded; no filler and nothing that could be trimmed without losing information.

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?

With no output schema, listing the returned fields (id, título, body markdown, projectId, fechas) is genuinely valuable and covers the return contract. Minor gaps remain around error/not-found behavior and whether body is full or truncated.

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?

One required parameter (id) with 0% schema description coverage, so the schema contributes nothing beyond the type. The description names 'id' among the returned fields, implying the same identifier is the lookup key, but never states input format or that the id must reference an existing doc.

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?

States a specific verb (lee) and resource (documento de proyecto completo), and the parenthetical field list distinguishes it from list_docs by signalling a full single-record retrieval. It does not explicitly name the read-only sibling it differs from, but the resource 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?

Usage is implied: fetch one complete document, presumably by id, when you need the full body rather than the list view. No explicit when-to-use/when-not or reference to alternatives such as list_docs (for listings) or save_doc (for writes).

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