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security_jwt_generator_validator

Generate, sign, validate, and decode JSON Web Tokens (JWT) with HMAC, RSA, ECDSA, or EdDSA. Perform full claim validation including exp, nbf, iss, and aud.

Instructions

Menu ID: jwt_generator_validator. JWT Generator / Validator. Generate, sign, validate, and decode JSON Web Tokens (JWT, RFC 7519). HMAC (HS256/384/512), RSA (RS256/384/512), ECDSA (ES256/384/512), and EdDSA. Full claim validation: exp, nbf, iss, aud. Use describe_tool with tool_id "jwt_generator_validator" for full page guidance.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
operationYes
tokenYes
Behavior2/5

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

With no annotations, the description must fully convey behavioral traits. It lists capabilities but omits critical details: how keys are provided (no key parameter in schema), expected input format, side effects (e.g., is token validation destructive?), and output. The missing key handling is a major gap.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is relatively concise and front-loaded with purpose. Including the 'Menu ID' is minor noise, but overall it efficiently communicates core functionality and references further details, keeping length appropriate.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the input schema's simplicity (2 params, no enums), no output schema, and overlapping siblings, the description should explain parameter usage and tool behavior. It fails to do so, omitting key information like operation values, key handling, and return values, relying on an external describe_tool call.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0%, yet the description adds minimal detail: it implies operation values (generate, sign, validate, decode) but does not specify exact strings or constraints. The token parameter is not explained beyond its name. The reference to describe_tool suggests external documentation, reducing self-containment.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool generates, signs, validates, and decodes JWTs, listing specific algorithms and claim validation. It is specific about the resource (JWT) and the verbs, leaving no ambiguity about its purpose. This sufficiently distinguishes it from siblings like encoding_decoding_jwt, though not explicitly.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies this is the comprehensive JWT tool but does not explicitly state when to use it vs. alternatives like encoding_decoding_jwt or crypto_hmac. It directs users to describe_tool for full guidance, which mitigates but does not fully satisfy the need for usage context.

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

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