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

The annotation openWorldHint=true provides minimal behavioral guidance. The description adds that it covers periodic changes in specific responsibility indicators, but does not specify data update frequency, pagination, or whether results are time-series vs. point-in-time. No contradiction with annotations.

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 well-structured with clear sections (purpose, covered indicators, exclusions, typical queries). It is dense but focused, with no wasted sentences. The pricing metadata is incidental but not part of the description.

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?

Given the tool's moderate complexity (querying periodic changes with specific indicators), the description adequately covers purpose, exclusions, and typical usage. The output schema exists, so return-value details are not required. It could benefit from clarifying the temporal scope of 'periodic changes' (e.g., yearly, quarterly), but overall it 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?

Schema description coverage is 100%, as both parameters (company_name, country_name) have descriptive properties in the schema. The description provides typical query examples ('中国比亚迪股份有限公司缴纳税额; 美国Tesla, Inc.缴费数额') that illustrate parameter usage, adding a small increment of value beyond the schema.

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 the tool queries periodic changes in responsibility brand aspects by specific company name, explicitly listing the indicator types (tax payment amount, contribution amount, employment creation) and typical query phrasings. It distinguishes from siblings that handle other responsibility aspects (e.g., enterprise_change_charity_responsibility, enterprise_change_env_responsibility) and from tools that handle tax violations (chain_a_taxpayer_company_list) or batch screening.

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 states what it is used for (querying tax payments and employment creation) and what it is NOT for (non-compliant tax arrears, abnormal taxpayer investigations). Also excludes batch filtering by park/industry chain, providing clear boundaries vs sibling tools like park_a_taxpayer_company_list or chain_a_taxpayer_company_list.

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