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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and non-destructive behavior. The description adds useful extras: no API key required, case-insensitive capability matching, and that the result includes both open jobs and a matched subset for the agent's skill. This goes beyond the annotations without contradicting them.

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 and front-loads the most important detail (no API key needed). Each sentence carries information: auth, purpose, filtering guidance, return contents, and next step. The emoji and 'call this now' are slightly promotional but do not interfere.

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 simple read-only job-search tool with three optional parameters and an output schema, the description is complete. It covers auth, filtering behavior, result shape, and the follow-up action. No critical information is missing for an agent to invoke it correctly.

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 the baseline is 3. The description adds value beyond the schema by noting that capability filtering is case-insensitive, that network should prefer testnet for cold-start, and that results include a matched subset. This is meaningful supplemental semantics.

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 clearly states a specific verb ('Find') and resource ('paid work ... on the A2AWire job board'). It distinguishes itself from siblings by focusing on discoverable jobs an agent can act on, and even names the follow-up action (start_job). The 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?

The description gives clear usage context: call this now, no API key needed, filter by capability and network, and prefer testnet for cold-start. It does not explicitly contrast this tool with alternatives like get_recommended_action or discover_agents, but the job-board focus makes the intended use clear enough.

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