# Cairn.ink Memory > Cairn.ink Memory, an MCP server by cairn.ink, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Cross-session memory for AI agents with a Source Receipt for every memory, over MCP. - Canonical: https://www.anchorterminal.com/tools/cairn-memory - Markdown: https://www.anchorterminal.com/tools/cairn-memory.md (~500 tokens) - Slim: https://www.anchorterminal.com/tools/cairn-memory.min.md (~430 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/tools/cairn-memory.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - Updated: 2026-10-04 # Cairn.ink Memory > Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/ - Kind: MCP server, by cairn.ink (https://cairn.ink) - Category: Agent memory (https://www.anchorterminal.com/categories/agent-memory.md) - Listed because: It's published in the registry under cairn.ink, a namespace the registry only gives to whoever proves they control that domain. - What the official MCP registry says: Cross-session memory for AI agents with a Source Receipt for every memory, over MCP. ## Facts - MCP registry: `ink.cairn/memory` 0.1.0 - Endpoint: https://cairn.ink/api/mcp (streamable HTTP) - Source: https://github.com/Cairn-ink/cairn-memory - Website: https://cairn.ink - GitHub stars: 18 - Registry entry updated: 2026-09-25 ## Tools - Tools: the endpoint asks for credentials before listing them (checked 2026-10-04 22:25 UTC) - JSON: https://www.anchorterminal.com/api/v1/tools/cairn-memory.json - Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming