Cortex — Persistent Semantic Memory

Persistent semantic memory for AI assistants.

CommunityOnlineNo sign-inGlobalFreeCan modify data

What it can do

  • Search: Cerca informazioni nella memoria dell'utente. Restituisce risultati con id, titolo e url da citare.
  • Fetch: Recupera il contenuto completo di un elemento dato il suo id (ottenuto da search).
  • Cortex Recall: Riassume cio che la memoria contiene su un argomento.

What data it sees

Do you need an account

No: the server works without sign-in

Persistent semantic memory for AI assistants. Same memory from Claude, ChatGPT or any MCP client: your AI remembers your work, decisions and conversations across sessions, devices and models.

Unlike plain RAG or note archives, every write passes a server-side quality gate that rejects redundant memories (~80% of proposals in production), contradictions are tracked as first-class objects instead of being silently swallowed, and every answer can cite its sources.

  • Zero setup — hosted remote MCP server, OAuth sign-in, trial space auto-created on first connection (30 days, no credit card)
  • Governed writes — novelty filter, typed claims, deduplication at write time
  • Conflict tracking — contradictions surfaced with warnings, never hidden
  • Multi-model — one memory across Claude, ChatGPT and any MCP-compatible client
  • EU infrastructure — export and delete your memories at any time

Listed on the official MCP registry (io.github.FilippoPilo/cortex). Patent application filed (May 2026). Benchmarks published — including the inconvenient ones — at skynetlab-cortex.com, docs and examples on GitHub.

How to connect

How to connect Cortex — Persistent Semantic Memory to Claude

The server address to paste into Claude settings:

https://cortex--filippopilotta1978.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 Cortex — Persistent Semantic Memory to ChatGPT

The server address to paste into ChatGPT settings:

https://cortex--filippopilotta1978.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 Cortex — Persistent Semantic Memory to Cursor

The server address to paste into Cursor settings:

https://cortex--filippopilotta1978.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 (6)

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

searchCerca informazioni nella memoria dell'utente. Restituisce risultati con id, titolo e url da citare.
fetchRecupera il contenuto completo di un elemento dato il suo id (ottenuto da search).
cortex_recallRiassume cio che la memoria contiene su un argomento.
cortex_writeSalva un'informazione nella memoria dell'utente.
cortex_forgetDimentica (elimina) una memoria dato il suo id.
cortex_conflictsMostra le contraddizioni rilevate tra le memorie.