create_free_keyMint a FREE-tier API key and email it to the given address (the key is also returned once here). Paste that key into the connector's x-api-key header to unlock full fields, filters and higher limits. One active free key per email.
| Name | Required | Description | Default |
|---|---|---|---|
| Yes | Where to deliver the key. |
Changes observed during successful MCP inspections.
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Discloses that key is emailed and returned, plus one-per-email limit. Annotations show non-read-only and non-destructive, so description adds useful behavioral context.
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?
Two sentences with no redundancy. Every sentence provides necessary information: action, delivery, return, and constraint.
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 tool simplicity (1 param, no output schema), description adequately covers purpose, behavior, and constraints. No gaps evident.
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?
With 100% schema coverage and single parameter 'email', description adds value by explaining the email's purpose and that key is returned, supplementing the schema's minimal description.
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?
Description explicitly states verb 'mint' and 'email' with resource 'free API key', clearly distinguishing it from sibling tools which focus on AI compliance and law queries.
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?
Mentions constraint 'one active free key per email' but does not provide explicit guidance on when to use vs alternatives. Context sufficient for its simplicity.
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.