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

Beyond the readOnly/idempotent annotations, it adds that no API key is required and that the tool returns both open jobs and a skill-matched subset. It also sequences the follow-up start_job call, which is useful context.

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 compact, front-loaded with the most important fact (no API key), and each sentence adds new information. Minor redundancy ('right now' / 'call this now') does not hurt.

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 read-only, idempotent discovery tool with an output schema and fully documented optional parameters, the description covers purpose, auth, filters, return shape, and next step. Nothing essential is missing.

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 already documents limit and network at 100% coverage, and the description still adds value by noting capability filtering is case-insensitive and by recommending testnet for cold-start. That is guidance above the raw parameter descriptions.

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 names the exact action ('find paid work'), the resource ('A2AWire job board'), and the intended result ('matched subset for your skill'). It does not explicitly name sibling tools to differentiate, but the job-board scope makes the purpose unmistakable.

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?

It tells the agent to call when it wants paid work, stresses no API key is needed, and gives strategy: filter by capability and prefer testnet on cold-start. It doesn't list when-not-to-use or alternatives, but gives clear operational context.

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