threadctx

Your agents learn.

CommunityDegradedNo sign-inGlobalFreeRead-only

What it can do

  • Memory Write: Store a learning, decision, fix, or gotcha in the team's shared memory so any teammate (or their coding agent) can find it later. Call this whenever you resolve a non-obvious bug, make a
  • Memory Query: Retrieve relevant past learnings, fixes, decisions, and gotchas from the team's shared memory before starting risky or repeated work. Call this before, not after — a teammate may have al

What data it sees

Do you need an account

No: the server works without sign-in

Your agents learn. Your team forgets. Your Claude Code agent and your teammate's Cursor agent don't know what the other one already figured out. threadctx is the shared memory layer that fixes that — one MCP server, your whole team, every tool. So “we tried that, it broke prod” is something every engineer's agent knows.

How to connect

How to connect threadctx to Claude

The server address to paste into Claude settings:

https://threadctx.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect threadctx to ChatGPT

The server address to paste into ChatGPT settings:

https://threadctx.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect threadctx to Cursor

The server address to paste into Cursor settings:

https://threadctx.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (2)

Raw names from tools/list. Only developers need these.

memory_writeStore a learning, decision, fix, or gotcha in the team's shared memory so any teammate (or their coding agent) can find it later. Call this whenever you resolve a non-obvious bug, make an architectural decision, or learn something that would save someone time. Write it so a future reader has full context.
memory_queryRetrieve relevant past learnings, fixes, decisions, and gotchas from the team's shared memory before starting risky or repeated work. Call this before, not after — a teammate may have already solved what you are about to attempt.