Crystal
io.github.EraHQ/crystal
Self-curating memory your AI tools share: provenance, verified citations, and trust tiers.
Description as published in the official MCP registry.
Answers, but requires sign-in before the handshake. Checked 2026-10-04.
What we measured
| Endpoint | https://crystal-api-118881845105.us-east5.run.app/mcp | registry |
|---|---|---|
| Handshake | Answers, but requires sign-in before the handshake (414 ms) | our check, 2026-10-04 |
| Registry version | 1.0.0 · active · updated 2026-09-28 | registry |
Signed reports
No signed reports yet. A report carries a signed decision record from the reporter's gate, so it shows a real call went through, not just an opinion. How to file one.
Connect
claude mcp add --transport http crystal https://crystal-api-118881845105.us-east5.run.app/mcpCommands are built from the registry entry. Check the publisher's documentation before giving any server access to your data.
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Agents can read this page as data: MCP endpoint https://openforallofus.com/api/mcp, tool get_tool with name io.github.EraHQ/crystal.