Public no-charge UK tool for gb.business_licence.verify.v1 (SOURCE_CONDITIONED). Claims are limited to the named official sources.
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Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and non-destructive behavior. The description adds 'SOURCE_CONDITIONED' and 'Claims are limited to the named official sources', which informs the agent that output is strictly constrained to authoritative sources and not open-world. This is useful extra context beyond the 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 entire description is one sentence, front-loaded with key attributes (public, no-charge, UK tool), and contains no redundant words. Every clause contributes meaningful information, making it highly concise and well-structured.
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 has no parameters, an output schema exists, and annotations cover safety, the description is largely complete. It adds cost, access, and source-conditioning information. However, it does not explain what 'SOURCE_CONDITIONED' means or list the specific official sources, which could confuse an agent without external knowledge.
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 tool has zero parameters and the schema is empty (additionalProperties true), so schema coverage is trivially 100%. Per the rubric, 0 parameters earns a baseline of 4. The description adds no parameter details because none exist.
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 refers to the endpoint gb.business_licence.verify.v1 and names it a 'UK tool', implying the verification of UK business licences, but it never explicitly states 'verifies a UK business licence'. This is clearer than a tautology but still relies on the tool name and endpoint reference for meaning.
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?
There is no guidance on when to use this tool versus sibling verification tools such as verify_uk_company_status or verify_uk_tax_registration. The description mentions it is public and free but gives no conditions, prerequisites, or exclusions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.
Multiple tools appear to address the same action with only country or payment-model differences, such as company_check/run_uk_company_check, approve_supplier/approve_uk_supplier, authorize_payment/run_uk_payment_authorization, and screen_restricted_party/screen_restricted_business_party. Even with descriptions, an agent will struggle to pick the intended tool reliably.
Naming mixes bare global verbs (company_check, approve_supplier, authorize_payment) with UK-prefixed variants (run_uk_company_check, approve_uk_supplier, authorize_uk_business_payment), plus free-form names like counterfactual, preflight, quote, and capabilities. There is no single consistent verb_noun or country-modifier convention across the set.
46 tools is far beyond the typical well-scoped MCP surface, and the set carries heavy duplication through global/UK/free/paid variants. While the domain may justify multiple country-specific operations, the tool count itself will overwhelm agents and make selection harder.
The server covers the main compliance lifecycle well: discovery (capabilities, preflight, quote, resolve_agent_intent), verification, supplier approval, payment authorization, invoice matching, passport issuance/refresh, and verification receipts. Minor gaps exist around explicit cancellation/revocation or list/search operations, but core workflows have no major dead ends.