ctxstore

Persistent memory for AI agents: keyed facts, a wake bundle each session, one memory in every model. Remote MCP server, OAuth 2.1 or API key.

View on ctxstore.aiTry this MCPSponsored

Hosted MCP Server

npx add-mcp 'https://mcp.ctxstore.ai/mcp'

Installs into Claude Code, Codex, Cursor and more

Documentation

Your AI’s memory. Yours.

One memory you own. It follows you to every model and tool; hand it to anyone.

Tuesday·in Claude

Can you move the pricing review and remind me about Ila’s appointment?

Done — pricing review is Thursday. Ila’s appointment is the 14th.

same memory

Wednesday·in ChatGPT

Where were we?

Pricing review Thursday, appointment on the 14th. Same thread you started in Claude.

Same assistant. Different app. Nothing lost.

Works everywhere.

One memory across Claude, ChatGPT, Grok, Gemini, Cursor, Codex, and any MCP app.

Invite anyone, free.

Share a workspace so their assistant knows what yours knows.

Yours, not theirs.

Your assistant keeps its memory of you for itself. Ask it to export it, move it, share it, or say where it came from. ctxstore does all four.

We swapped the model out from under our own assistant mid-day. It didn’t notice.

ctxstore team

Solo is free. Collaboration is $19 a month per person, 7 days free when invited.

Invite someone

Check your email — once they accept, three calls unlock:

  1. Connect your agent.
  2. Ask “who else is here?”
  3. Save a line to the guestbook.