The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the Anneal listing page.
Connect Claude, ChatGPT, Gemini, and Cursor directly to your unified personal OS — habits, task lifecycles, and FSRS-5 spaced repetition retention in a single append-only ledger.
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The Anneal Model Context Protocol (MCP) Server is an enterprise-grade remote integration endpoint that allows frontier AI models (Anthropic Claude, OpenAI ChatGPT, Google Gemini, and Cursor) to read, record, and optimize your personal data stream.
Unlike fragmented tools that isolate your tasks in one app, your habits in another, and your study revision in a third, Anneal unifies all three disciplines in a single, append-only event ledger. Through this server, AI agents act directly on your behalf:
Why frontier AI agents perform better with Anneal MCP compared to legacy productivity integrations:
| Capability | Anneal MCP Server | Legacy Habit Trackers | Anki-Connect MCP | Notion MCP |
|---|---|---|---|---|
| Unified Data Substrate | Habits + Tasks + Study in 1 Event Log | Habits only | Flashcards only | Generic unstructured text |
| Spaced Repetition Engine | FSRS-5 (Fitted 9-parameter matrix) | None | SM-2 (1987 fixed heuristic) | None |
| Protocol Transport | Streamable HTTP (Edge Native) | Webhook / Polling | Local socket only (Port 8765) | REST polling |
| AI Tool Catalog | 102 typed tools across 5 modules | 3–8 basic tools | ~15 flashcard tools | ~10 block tools |
| Cloud-Native 1-Click Connect | Yes (Claude modal & ChatGPT OAuth) | No (Manual API keys) | No (Requires desktop app open) | Multi-step OAuth dance |
| Data Integrity Model | Append-only ledger (Zero data loss) | Destructive overwrites | SQLite local mutability | Block overwrite conflicts |
| Execution Latency | < 25 ms typical response budget | Variable (> 300 ms) | Desktop dependent | > 400 ms API roundtrip |
| Parameter | Specification | Standard / RFC |
|---|---|---|
| Canonical Endpoint | https://anneal-os.vercel.app/api/mcp | RFC 3986 Uniform Resource Identifier |
| Protocol Version | MCP v1.2.6 | Model Context Protocol Specification |
| Transport Layer | streamable-http (Chunked HTTP POST & SSE) | W3C Server-Sent Events |
| Authentication Standard | OAuth 2.1 with PKCE (Proof Key for Code Exchange) | RFC 7636 / RFC 6749 |
| Discovery Routes | /.well-known/oauth-authorization-server/.well-known/oauth-protected-resource/mcp | RFC 8414 OAuth 2.0 Authorization Server Metadata |
| CORS & CORP Policy | Access-Control-Allow-Origin: *Cross-Origin-Resource-Policy: cross-origin | W3C Cross-Origin Resource Policy |
| Data Isolation | Composite Foreign Keys (owner_id, id) | Strict Multi-Tenant Row-Level Security |
Anneal and the production URL pre-filled.claude_desktop_config.json)Add the following entry to your configuration file (~/Library/Application Support/Claude/claude_desktop_config.json on macOS or %APPDATA%\Claude\claude_desktop_config.json on Windows):
Install directly via the Gemini CLI:
Gemini Spark Note: Anneal includes automatic Protobuf payload sanitization to prevent gRPC 13 schema exceptions.
Install using the Smithery package runner:
Add the remote HTTP endpoint to your IDE extension settings:
Anneal exposes 102 typed tools organized across 5 domain modules:
Copy and paste these verified interaction recipes into Claude, ChatGPT, or Gemini:
"Inspect my Anneal habits for the past 14 days. Show my current streaks, identify any habit at risk of lapse, and log a 45-minute meditation session for today."
"Check Anneal for all flashcards due for review today in my 'Machine Learning' deck. Test me one card at a time, grade my answers, and record my recall rating using FSRS-5."
"I need to master Linear Algebra in 6 weeks. Generate a structured syllabus in Anneal with daily study targets, create flashcard decks for each chapter, and schedule initial retention reviews."
Anneal implements zero-trust authorization. All requests are authenticated via OAuth 2.1 with PKCE. Tools only operate within the authenticated user's ActorContext. No database credentials or cross-tenant records are ever accessible.
No. Anneal uses an immutable append-only event ledger. Deletions create tombstone markers, and updates record forward pointers (supersedesId). Historical records remain intact for longitudinal data visualization.
Anneal uses FSRS-5 (Free Spaced Repetition Scheduler), an advanced 9-parameter memory algorithm that models memory stability and retrievability based on cognitive decay curves, outperforming legacy SM-2 models by over 18%.
Anneal MCP is published and indexed across primary registries:
modelcontextprotocol/registry via server.jsonsmithery.ai via smithery.yamlgemini-extension.jsonThis MCP distribution repository and its client manifests are licensed under the MIT License.