Frihet-io/frihet-mcp

Tool annotations

9/151 tools have annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

142/151 tools missing one or more hints — period_close_status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); frihet_gl_entry_approve (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); frihet_gl_entry_reject (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +139 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Tool inputs are validated

147/151 tool handlers declare input schemas (97%)

Declare an inputSchema with zod/joi/yup on every tool definition.

Tool handlers catch errors

Only 9/151 tool handlers wrap calls in try/catch (6%)

Wrap each tool handler body in try/catch and return a structured error response.

No hardcoded API keys

1 live-looking API key in source: 1 Google API key

Move secrets to environment variables (process.env.X) or your secret manager.

Tool test coverage

81/151 tools referenced in tests (54%)

Write tests that reference each tool by name so every tool has at least one test.

Shell command execution

2 child_process calls — runs shell commands

Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.

Secrets not logged

1 secret value sent to console.log

Redact or omit secret values from log output.

No arbitrary install scripts

Has postinstall/preinstall script — runs arbitrary code on npm install

Remove postinstall/preinstall hooks unless they’re essential.