emem

About

emem is a shared memory for AI agents, filled with satellite, elevation, water, air quality and other geospatial readings. Each place gets one address (cell64) and each observation is a signed fact with a content hash, so two agents can cite the same fact and check the signature without trusting each other. Tools cover place lookup, fact recall, entity identities, citation tokens, receipt verification, contradiction scans and similarity search.

The hosted endpoint at emem.dev/mcp uses streamable HTTP and needs no sign-in or API key for reads. Writes to shared spaces are tiered and need a signature. The server also ships as a Docker image (ghcr.io/vortx-ai/emem) and exposes a short tool list plus emem_tools to discover the rest.

What you can do

• Resolve a place name or coordinates to a canonical cell64 address
• Recall signed facts for a place and band, with auto-materialization
• Mint and resolve emem:fact: citation tokens
• Verify receipts and check claimed values against signed facts
• Scan for disagreement between attesters on the same place and band
• Mint and resolve canonical entity identities for real-world objects
• Find similar places by embedding
• Ask free-text questions about a location

Tools 18

• emem_entityWrites

  Mint or get a canonical shared identity for a real-world object.

• emem_locateRead-only

  Resolve a place to a cell64 address and list the bands available there.

• emem_recallWrites

  Read signed facts at a cell, materializing them on a miss.

• emem_memory_tokenRead-only

  Compose an emem:fact: citation handle for a signed fact.

• emem_memory_token_resolveRead-only

  Dereference a memory token to its value, unit, band and signed fact.

• emem_verify_receiptRead-only

  Verify a signed ed25519 receipt server-side.

• emem_memory_contradictionsRead-only

  Find places where independent attesters signed different values.

• emem_guard_verdictRead-only

  Check whether emem citations in a draft text resolve and verify.

• emem_toolsRead-only

  List the full tool surface, search it, or get one tool's schema.

• emem_askWrites

  Answer a free-text question about a location from signed receipts.

• searchWrites

  Search signed facts for a place and return them as citable results.

• fetchWrites

  Open a search result, fact citation or cell handle and read the signed record.

Read from the live server on 4 Oct 2026. Read-only, Writes and Can delete are hints the server declares; your client decides whether to ask before running a tool.

Example prompts

• Has the area around 45.434, 12.323 flooded historically? Cite the signed facts.

• Give me a citation token for the NDVI reading near Mount Fuji.

• Verify that this emem:fact token matches the value I am about to report.

• Find places similar to this farm plot and show the cell addresses.

Set up

Every client connects to emem.dev. Pick yours; the page remembers your choice.

claude mcp add --transport http emem https://emem.dev/mcp

https://emem.dev/mcp

{
  "mcpServers": {
    "emem": {
      "url": "https://emem.dev/mcp"
    }
  }
}

code --add-mcp '{"name":"emem","type":"http","url":"https://emem.dev/mcp"}'

{
  "servers": {
    "emem": {
      "type": "http",
      "url": "https://emem.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "emem": {
      "serverUrl": "https://emem.dev/mcp"
    }
  }
}

codex mcp add emem --url https://emem.dev/mcp

[mcp_servers.emem]
url = "https://emem.dev/mcp"

gemini mcp add --transport http emem https://emem.dev/mcp

{
  "mcpServers": {
    "emem": {
      "type": "http",
      "url": "https://emem.dev/mcp"
    }
  }
}

FAQ

Embed

Show emem in a README or on your site. Each embed links to this page, uses the server’s own URL, and sets no cookies. How embeds work

README badge Website card iframe JSON

README badge

Markdown

[![emem on mcp.tc](https://mcp.tc/i/emem/badge.svg)](https://mcp.tc/i/emem)

HTML

<a href="https://mcp.tc/i/emem"><img src="https://mcp.tc/i/emem/badge.svg" alt="emem on mcp.tc" height="20"></a>

It follows the reader’s light or dark mode. Add ?theme=light or ?theme=dark to fix it, or ?style=compact to show the mark without the word.

Website card

HTML

<script src="https://mcp.tc/w/emem.js" async></script>

The card appears where the tag is. Add data-theme="dark" or data-size="compact" to the tag to change it. The file holds everything it needs, so it makes no other requests and sets no cookies.

iframe

HTML

<iframe src="https://mcp.tc/embed/emem" title="emem on mcp.tc" width="420" height="200" loading="lazy" allow="clipboard-write" style="border:0;border-radius:8px;max-width:100%"></iframe>

Use it on pages that don’t allow scripts. Add ?theme=light or ?theme=dark to the address to fix the colors.

JSON

The listing as data for your own pages and tools: name, tagline, the server’s own URL, tools and the “Add to” links. Any site can read it (CORS is open).

https://mcp.tc/i/emem.json

What each field means