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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds the content scope a caller can expect (inputs/outputs, what persists after a run, settings, reachability, tested locations, files), which is useful context beyond the annotations, but it omits lookup-failure behavior for an unknown recipe ID.

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?

One front-loaded sentence with a long but readable enumeration of returned facets; every item earns its place by previewing the payload. No filler, though the list is dense enough to verge on a run-on.

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?

For a one-parameter read-only lookup with annotations and an output schema, this is close to complete: it tells the agent what the response will contain and that the tool is safe and idempotent. The only gap is the absence of any failure or not-found behavior.

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%: the single `recipe` parameter has a documented owner/repo/task format, a regex pattern, and an example. The description adds nothing about the parameter, which is acceptable given the schema already carries the full burden.

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 and resource ("Get one recipe in full") and enumerates the facets it returns, which distinguishes it from search_recipes. It stops short of naming a sibling outright, but "in full" signals the detail-level contrast with search and file-level reads.

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 only implied: "in full" and "every file it runs" suggest this is the whole-recipe view rather than a search (search_recipes) or a single-file read (read_recipe_file). There is no explicit when-to-use or when-not-to-use statement, and no prerequisite or error condition mentioned.

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