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Documentation Index

Fetch the complete documentation index at: https://docs.3ngram.ai/llms.txt

Use this file to discover all available pages before exploring further.

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Sign up

  1. Create your account at app.3ngram.ai/register.
  2. Complete the workspace setup in the 3ngram app.
Once signed in, you can use the dashboard to browse memories, commitments, and decisions. The core workflow happens inside your AI tool: connect 3ngram, save what matters, search it later, and run briefings when you start work.

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Connect an MCP client

3ngram works through the Model Context Protocol (MCP). Use the same hosted MCP URL everywhere: 
https://mcp.3ngram.ai/mcp
We are working on adding 3ngram to the Claude and ChatGPT directories for one-click install. We will email users when those listings are live.

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Claude.ai

  1. Open Settings → Connectors.
  2. Click Add custom connector.
  3. Enter:
    • Name: 3ngram
    • URL: https://mcp.3ngram.ai/mcp
  4. Click Create and complete the 3ngram login when Claude opens the OAuth flow.

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ChatGPT

  1. Open Settings → Apps. In newer workspaces this may appear as Settings → Apps & Connectors.
  2. Open Advanced settings and enable developer mode if Create app is hidden.
  3. Choose Create app.
  4. Enter:
    • Name: 3ngram
    • MCP server URL: https://mcp.3ngram.ai/mcp
    • Authentication: OAuth
  5. Create the app and complete the 3ngram login when ChatGPT opens the OAuth flow.

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Claude Code

In your terminal: 
claude mcp add --transport http 3ngram https://mcp.3ngram.ai/mcp
Then open Claude Code, run: 
/mcp
Select 3ngram and authenticate in the browser.

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Codex

In your terminal: 
codex mcp add 3ngram --url https://mcp.3ngram.ai/mcp
If Codex does not start OAuth automatically, run: 
codex mcp login 3ngram
Codex stores the server in ~/.codex/config.toml and uses OAuth with Dynamic Client Registration. For Cursor, Windsurf, and fuller verification steps, see 3ngram MCP.

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Save your first memory

With 3ngram connected, ask your AI assistant to remember something. Use the client-specific invocation pattern so the assistant routes to 3ngram instead of its native memory.

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ChatGPT

Use /3ngram or @3ngram:
“@3ngram Remember that we chose PostgreSQL for the database.”

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Claude

Use @3ngram or prefix the request with 3ngram::
“3ngram: Remember that we chose PostgreSQL for the database.”

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Claude Code and Codex

Use the same explicit prefix in your project session:
“3ngram: Remember this commitment due Friday: finish the API review.”
3ngram stores the item with the right type, project tag, and scope when enough context is available.
Many AI tools have their own built-in memory. Use @3ngram, /3ngram, 3ngram:, or “in 3ngram” when you want the memory saved to 3ngram.

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Run onboarding

After connecting your first client, ask your AI tool:
“Onboard me to 3ngram.”
If your client supports explicit app mentions, use:
“Onboard me to @3ngram.”
The onboarding prompt starts an interactive setup conversation and explains what 3ngram can do in the AI tool you are using.

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Enforce 3ngram usage

Add a short custom instruction so your AI routes memory, commitment, decision, and blocker requests to 3ngram. 
When I mention memories, commitments, decisions, blockers, briefings, or debriefs,
use the 3ngram MCP tools. Route memory operations to 3ngram, not built-in memory.
Where to add it:
  • Claude.ai: Settings → General → Instructions for Claude
  • ChatGPT: Settings → Personalization → Custom instructions
  • Claude Code: add a line to the project CLAUDE.md, or your global CLAUDE.md
  • Codex: add the same pattern to the project AGENTS.md, or your global agent instructions

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Recall memories

Ask naturally:
“3ngram: What do you remember about the database decision?”
“3ngram: What commitments do I have this week?”
“3ngram: Show me my open blockers.”
3ngram uses semantic search, so you do not need exact keywords.

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Use the core workflow

The fastest way to feel the product value is:
  1. Start your session with 3ngram: Run my briefing.
  2. Save decisions and commitments while you work.
  3. End the session with 3ngram: Run my debrief.
That turns 3ngram from passive memory into a follow-through loop.

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Next steps

3ngram MCP

Set up additional AI clients.

Memory types

Learn how 3ngram classifies work.

Memory tools

Learn the tools and how to use them naturally.

Prompt templates

Automate briefings, debriefs, and project context.