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

With no annotations, the description carries the burden and does disclose meaningful behavior: an eligibility prerequisite (verified ABN), a cost (1 credit), and a state transition (listing becomes an H1R3 job). It stops short of stating irreversibility, failure behavior, or whether the credit is refunded on failure.

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?

A single dense sentence with no filler; the key facts (who, what, cost) are front-loaded. Slightly compressed wording ('claims a sourced listing for their company') costs a little readability.

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 mutation tool with no output schema and no annotations, the description covers the actor, the action, and the credit cost, but omits where listing_id comes from and what happens on failure. Adequate but with clear gaps.

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 0% for the single required listing_id, so the schema contributes nothing. The description hints that the id refers to a 'sourced listing' but never states the format, provenance, or how to obtain it, leaving the one parameter effectively undocumented.

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 (claims) and resource (a sourced listing) and adds the downstream effect (converts to an H1R3 job). It implicitly distinguishes itself from post_job/apply by acting on a pre-existing sourced listing, though no sibling is named explicitly.

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 precondition 'verified (ABN) employer' implies who should call it, but there is no explicit when-not guidance or pointer to an alternative such as post_job for employers who have no sourced listing. Usage is implied rather than stated.

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