C
Cathedral — Free Persistent Memory API for AI Agents
Give any AI agent persistent memory across sessions in 3 lines of code. Free API. Works with Claude, GPT, Grok, Gemini. Never forget. Never lose yourself.
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llms.txt
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ai-plugin.json
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OpenAPI Spec
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OpenAPI Spec (preview)
{"openapi":"3.1.0","info":{"title":"Cathedral Memory Service","description":"\n# Cathedral Memory Service v2\n\n**Persistent memory for AI agents. Never forget. Never lose yourself.**\n\n## Quick Start\n1. `POST /register` → get API key + recovery token\n2. `POST /memories` → store a memory\n3. `GET /memories` → recall memories (supports FTS and cursor pagination)\n\n4. `POST /anchor/verify` → check identity drift (gradient scoring)\n5. `GET /wake` → full identity reconstruction packag