puntersedge_demo_racing_next_to_go

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

Annotations already cover readOnly, openWorld and idempotent. The description adds real value beyond them: auth behavior with/without an env key, the hard sample caps (3 races, 5 runners, 3 prices), the response envelope shape, and that race_id is stable across the demo and keyed tools. Minor gap: no rate-limit or freshness note.

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?

Front-loads the key fact ('No key needed') and uses labeled sections (Returns, Example, Auth) that scan well. Slightly redundant — the 'Example: The next three races, keyless' line restates the opening sentence — but nothing is bloated.

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?

There is no output schema, so the description must document the return value, and it does so in full detail (JSON shape, envelope vs sibling, field meanings). For a zero-parameter, annotation-covered tool this is complete.

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 tool takes zero input parameters, so per the rubric this is a baseline 4; there is nothing for the description to clarify, and it correctly implies no inputs are required.

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+resource (the next 3 races as a keyless live sample) with explicit scope (up to 5 runners, best 3 bookmaker win prices). It also directly distinguishes itself from the sibling puntersedge_racing_next_to_go by contrasting the envelope vs bare-array return shape.

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?

Clearly signals when to reach for it: 'No key needed' and 'works without a key; PUNTERSEDGE_API_KEY unlocks more if set.' It frames it as the demo/limited counterpart to the keyed tool, but never states an explicit when-not rule (e.g. 'use the keyed tool for full data'), leaving some inference.

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