Tool Schema Validator
$2.99OfficialValidate and test tool/function calling schemas: JSON Schema compliance, edge case generation, parameter boundary testing, and mock servers.
What you get
- ✓9-step procedure
- ✓6 pitfalls to avoid
- ✓Installs into 6 tools
- Version
- v1 →
- Last updated
- today
- Length
- 5 min read
- Requires
- Best with a strong model (Claude Sonnet 4)
Works in: Claude Code, Codex, Cline, opencode, OpenClaw, Hermes · Handles multi-file projects
Preview
When to use
Use this skill when validating that a tool/function-calling schema is correct and robust before exposing it to agents: "test my tool schemas," "validate this function definition," "the model keeps sending bad arguments," "generate edge cases for my tool." Trigger phrases: schema validation, tool schema testing, JSON Schema compliance, parameter boundary testing, mock tool server, function-calling tests.
Do NOT use it for designing the tool from scratch (that's the tool-builder skill), or evaluating agent behavior end-to-end (that's the eval framework). This is the focused, rigorous validation of the schema itself and the contract between model and handler.
Inputs to gath
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