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

Annotations cover safety (readOnlyHint=true, openWorldHint=false), and the description adds real behavioral context beyond them: the ranking algorithm (weight x headroom, not lowest score), the do_first gate-precedence rule, the exactness of the point data, and the B2 pricing model with a pointer to apis://prices. It stops short of stating auth/ownership prerequisites beyond the phrase 'you own'.

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-loaded with the core purpose, then the ranking logic, the routing hints, and pricing in a compact sequence. The pricing/catalog sentence is arguably secondary detail, but every sentence still carries information an agent can act on.

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 describe the return payload, and it does so well (per-check results with satisfiers, ranked facets, do_first headline). With only two fully documented parameters and annotations covering safety, an agent has nearly everything needed; only ownership/auth prerequisites are unstated.

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% and both parameters are documented in the schema (slug format, context semantics), so the schema carries the load. The description adds only an implicit 'one provider you own' constraint and no syntax or format detail beyond what is already structured, which is the expected baseline when coverage is complete.

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 ('the ranked, gated punch list for one provider you own') with the exact resource and scope, and defines the output shape (all unsatisfied readiness checks plus Kin Score facets ranked by weight x headroom). It also names the siblings it is not (readiness_gates, simulate_fixes), so an agent can distinguish it without opening schemas.

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?

Explicitly routes gate detail to readiness_gates and plan pricing to simulate_fixes, and the 'provider you own' scoping tells the agent which inputs are valid. It does not, however, contrast itself with adjacent siblings like get_agent_readiness, my_checks, or gap_analysis, leaving some selection ambiguity.

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