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Anthony StirlingandGitHub
3ecd95b779
Adds an optional MCP server (proprietary module) that exposes Stirling's PDF operations and AI capabilities to MCP clients. Off by default, zero footprint when disabled. ### What - New `/mcp` endpoint: streamable-HTTP + JSON-RPC 2.0; 8 tools (describe_operation, pages/convert/misc/security category tools, AI, upload, download). - Runs real operations over an internal loopback; results returned inline as base64 (small) or by fileId (large). ### Auth (two modes) - OAuth2 resource server: RFC 9728 protected-resource metadata, RFC 8707 audience binding, JWKS, `mcp.tools.read/write` scopes; binds each token to a provisioned Stirling account. - API-key mode: reuses Stirling per-user `X-API-KEY` (no IdP needed). ### Security - Per-user file ownership in FileStorage: async/queued writes scoped to the submitting user; legacy/owner-less files stay readable. - Admin allow/block list controls which operations are exposed. - Python engine gated behind a shared secret (`X-Engine-Auth`). - MCP filter chain is isolated and cannot weaken the main app's security. - Hardened: no upstream error-body leakage, log injection sanitized, fileId path/sidecar enumeration blocked. ### Config / footprint - Disabled by default (`mcp.enabled=false`); all beans `@ConditionalOnProperty`. --- ## Checklist ### General - [ ] I have read the [Contribution Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md) - [ ] I have read the [Stirling-PDF Developer Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md) (if applicable) - [ ] I have read the [How to add new languages to Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md) (if applicable) - [ ] I have performed a self-review of my own code - [ ] My changes generate no new warnings ### Documentation - [ ] I have updated relevant docs on [Stirling-PDF's doc repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/) (if functionality has heavily changed) - [ ] I have read the section [Add New Translation Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags) (for new translation tags only) ### Translations (if applicable) - [ ] I ran [`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md) ### UI Changes (if applicable) - [ ] Screenshots or videos demonstrating the UI changes are attached (e.g., as comments or direct attachments in the PR) ### Testing (if applicable) - [ ] I have run `task check` to verify linters, typechecks, and tests pass - [ ] I have tested my changes locally. Refer to the [Testing Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#7-testing) for more details.