A Python-based MCP server that integrates OpenAPI-described REST APIs into MCP workflows, enabling dynamic exposure of API endpoints as MCP tools.
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matthewhand
Source: modelscope
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OPENAPI_SPEC_URL"": "${OPENAPI_SPEC_URL}",TOOL_WHITELISTnever matched Slack-style dot paths like /users.list (#27) — fixed.API_KEYHeader Authentication: Uses Bearer by default for in the Authorization header, customizable for APIs like Fly.io requiring Api-Key.STRIP_PARAM(Optional) JMESPath expression to strip unwanted parameters (e.g. token for Slack).IGNORE_SSL_TOOLSwas ignored by the low-level dispatcher (#14) — fixed (original patch by [@robbycochran](https://github.com/robbycochran), #15).CAPABILITIES_TOOLS/ CAPABILITIES_PROMPTS / CAPABILITIES_RESOURCES: (Optional) Advertise listChanged on the corresponding capability (for clients that key on it). Default false.CAPABILITIES_RESOURCESCAPABILITIES_TOOLS / CAPABILITIES_PROMPTS / : (Optional) Advertise listChanged on the corresponding capability (for clients that key on it). Default false.CAPABILITIES_PROMPTSCAPABILITIES_TOOLS / / CAPABILITIES_RESOURCES: (Optional) Advertise listChanged on the corresponding capability (for clients that key on it). Default false.ENABLE_TOOLSENABLE_RESOURCESENABLE_PROMPTSADDITIONAL_RESOURCES(Optional) Comma-separated name=/path/to/file entries served as extra MCP resources (use-case docs such as naming policies or layout conventions; see examples/resources/).OPENAPI_SIMPLE_MODEEnabled by: Setting the environment variable =true.IGNORE_SSL_SPEC(Optional) Set to true to disable SSL certificate verification when fetching the OpenAPI spec.SERVER_URL_OVERRIDE(Optional) Overrides the base URL from the OpenAPI specification when set, useful for custom deployments.API_AUTH_TYPEcustom schemes (e.g. NetBox Token) sent no auth header at all (#24) — fixed.API_AUTH_HEADER(Optional) Header name used when API_AUTH_TYPE=api-key (e.g. x-apikey for VirusTotal, xi-api-key for ElevenLabs). Defaults to Authorization.TOOL_NAME_MAX_LENGTHwas not respected, and name-truncation collisions silently dropped tools (#11) — fixed.TOOL_NAME_PREFIX(Optional) A prefix to prepend to all tool names.XDG_CACHE_HOMEOPENAPI_SPEC_CACHE_TTL_SECONDS(Optional) Live-first disk cache for remote specs: the cached copy is served only when the live fetch fails or stalls (and respawned servers fail fast to it). Default 86400; set 0 to disable.OPENAPI_SPEC_FORMAT(Optional) Set to yaml to parse file:// specs as YAML (remote specs auto-detect). Default json.EXTRA_HEADERSnow accepts a JSON array and literal \n separators, not just real newlines (#17).README_API_KEYTool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
3/3 tools missing one or more hints — list_functions (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); call_function (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); dynamic_tool_298 (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint). 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 test coverage
2/3 tools referenced in tests (67%)
Write tests that reference each tool by name so every tool has at least one test.
Secrets not logged
9 secret values sent to console.log
Redact or omit secret values from log output.
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