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elephantasm-mcp

MCP server for long-term agent memory. Give any AI agent persistent memory, searchable knowledge, and an evolving identity.

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Model Context Protocol server for Elephantasm Long-Term Agentic Memory. One line of config.

Installation

pip install elephantasm-mcp

Quick Start

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "elephantasm": {
      "command": "elephantasm-mcp",
      "env": {
        "ELEPHANTASM_API_KEY": "sk_live_...",
        "ELEPHANTASM_ANIMA_ID": "your-anima-id"
      }
    }
  }
}

Claude Code

Add to .claude/settings.json or ~/.claude/settings.json:

{
  "mcpServers": {
    "elephantasm": {
      "command": "elephantasm-mcp",
      "env": {
        "ELEPHANTASM_API_KEY": "sk_live_...",
        "ELEPHANTASM_ANIMA_ID": "your-anima-id"
      }
    }
  }
}

Cursor / Windsurf

Add to your MCP config (Settings > MCP Servers):

{
  "elephantasm": {
    "command": "elephantasm-mcp",
    "env": {
      "ELEPHANTASM_API_KEY": "sk_live_...",
      "ELEPHANTASM_ANIMA_ID": "your-anima-id"
    }
  }
}

Any MCP-Compatible Agent

The server uses stdio transport — any MCP client that can spawn a subprocess works out of the box:

ELEPHANTASM_API_KEY=sk_live_... ELEPHANTASM_ANIMA_ID=... elephantasm-mcp

Configuration

Variable	Required	Default	Description
ELEPHANTASM_API_KEY	Yes	—	Your API key (starts with sk_live_)
ELEPHANTASM_ANIMA_ID	No	—	Default anima ID (can be overridden per tool call)
ELEPHANTASM_ENDPOINT	No	https://api.elephantasm.com/api	API endpoint

Get your API key and anima ID from the Elephantasm dashboard.

Tools

Five tools give your agent full read/write access to its memory:

query — Search the brain

Cross-source semantic search across memories, knowledge, and identity in one call. Returns a pre-formatted context string ready for system prompt injection.

query("what does the user prefer for error handling")

Parameter	Type	Default	Description
query	string	required	Natural language search query
anima_id	string	env default	Override default anima
sources	string[]	all	Filter: "memories", "knowledge", "identity"
max_tokens	int	2000	Token budget for results
limit	int	20	Max results
exclude_ids	string[]	—	Exclude IDs for multi-turn dedup

search_memories — Find past experiences

Semantic search across structured memories (reflections on past interactions).

Parameter	Type	Default	Description
query	string	required	Search query
anima_id	string	env default	Override default anima
limit	int	10	Max results
threshold	float	0.7	Min similarity (0–1)

search_knowledge — Look up what the agent knows

Semantic search across canonicalized knowledge — facts, concepts, methods, principles, and experiences.

Parameter	Type	Default	Description
query	string	required	Search query
anima_id	string	env default	Override default anima
limit	int	10	Max results
threshold	float	0.7	Min similarity (0–1)
knowledge_type	string	—	Filter: FACT, CONCEPT, METHOD, PRINCIPLE, EXPERIENCE

get_identity — Read the agent's personality

Retrieve the agent's behavioral fingerprint: personality type, communication style, and self-reflection.

Parameter	Type	Default	Description
anima_id	string	env default	Override default anima

ingest_event — Record an interaction

Capture a message, tool call, or system event. Queued for automatic memory synthesis.

Parameter	Type	Default	Description
content	string	required	Event content
event_type	string	message.in	message.in, message.out, tool.call, tool.result, system
anima_id	string	env default	Override default anima
role	string	—	user, assistant, system, tool
author	string	—	Who generated this event
session_id	string	—	Group related events

Resources

Two resources provide context that MCP clients can embed directly into system prompts:

URI	Type	Description
anima://{id}/pack	text/plain	Latest compiled memory pack — memories, knowledge, identity, and temporal context assembled into a single prompt-ready string
anima://{id}/identity	application/json	Identity profile — personality type, communication style, self-reflection

How It Works

Elephantasm is a Long-Term Agentic Memory framework. The MCP server connects your agent to its memory backend:

Your Agent ←→ elephantasm-mcp ←→ api.elephantasm.com ←→ PostgreSQL + pgVector

Write path: ingest_event → Events accumulate → Memory Synthesis (LLM) → Knowledge Synthesis (LLM) → Identity evolution

Read path: query / search_memories / search_knowledge → pgVector semantic search → scored, formatted results

Memory is curated automatically by two background loops:

• Dreamer — decays, merges, splits, and archives memories
• Meditator — clusters, merges, reclassifies, and refines knowledge

SDKs

For programmatic access without MCP, use the native SDKs:

• Python: elephantasm — pip install elephantasm
• TypeScript: @elephantasm/client — npm install @elephantasm/client

Links

• Documentation
• Dashboard
• GitHub
• API Reference

License

Apache 2.0