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

Adds real context beyond the annotations: "We read the page ourselves; nothing is published on your word" discloses the human-curation workflow, "Needs an API key" discloses an auth prerequisite the annotations don't carry, and the receipt/idempotency sentence explains what the idempotentHint actually yields. No rate limits or failure behavior, which keeps it below a 5.

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?

Four short sentences, front-loaded with what to submit and followed by eligibility, review behavior, auth, and return semantics. No filler; every sentence contributes a distinct fact.

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 non-destructive submission tool with full schema coverage and no output schema, it covers eligibility, auth, the review step, and what the receipt means. Only the absence of any failure/validation behavior (e.g. what happens for an already-suggested URL) leaves a small gap.

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 all four parameters are already documented, including the idempotency_key retry semantics. The description's mention of "address of a group's own website ... or an iCal feed" loosely maps to url but adds no format or constraint detail beyond the schema, so the baseline 3 applies.

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 concrete verb ("Tell My Noticeboard") and resource (a URL or iCal feed of community activity), with examples of acceptable sources (group website, parish, library, venue programme). It doesn't name any sibling tool, so the differentiation from readers like search_services or get_whats_on is implied by the submission framing rather than stated.

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?

Gives clear eligibility criteria — "Community-led and voluntary activity only" — and enumerates acceptable source types, which tells the agent when the tool applies and implicitly when it doesn't. It never explicitly routes to or excludes a named sibling, so the guidance stops short of full alternative-selection coverage.

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