@neruva/mcp

MCP server for Neruva — memory + reasoning substrate for AI agents. Knowledge graph (5 engines), Pearl do-operator, HD analogy, episodic CBR, deterministic replay. Drop into Claude Code / Cursor / Codex / Gemini CLI in one line.

For Claude Code users: see neruva.io/claude-code for the 30-second install + first-queries to try.

What's new in 0.17 — 9 cognitive primitives no LLM vendor ships

The substrate now exposes the full 9-level cognitive ladder. Every primitive runs sub-100ms, deterministic from seed, behind one MCP install.

~90 tools across Records, KG, Causal, Analogy, CBR, Blend, Vector memory, federated agent_*, the 9 cognitive primitives above, self-introspection.

Why this is unique

Every primitive in rows 3-9 is a graduated, production-shipped engine. No published memory vendor offers more than rows 1-2. Substrate-augmented small LLMs can match frontier-class agentic capabilities at a fraction of the cost per recall.

Install

# In Claude Code (any directory, user scope):
claude mcp add-json neruva '{"command":"npx","args":["-y","@neruva/mcp@latest"],"env":{"NERUVA_API_KEY":"nv_..."}}'

Or one-line install via npx for any MCP host:

npx -y @neruva/mcp@latest    # one-off
npm i -g @neruva/mcp         # then `neruva-mcp`

Get an API key at https://app.neruva.io (free tier, no credit card).

Wire into a host

Claude Code

claude mcp add-json neruva '{"command":"npx","args":["-y","@neruva/mcp@latest"],"env":{"NERUVA_API_KEY":"..."}}'

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "neruva": {
      "command": "npx",
      "args": ["-y", "@neruva/mcp@latest"],
      "env": { "NERUVA_API_KEY": "..." }
    }
  }
}

Codex (~/.codex/config.toml)

[mcp_servers.neruva]
command = "npx"
args = ["-y", "@neruva/mcp@latest"]
env = { NERUVA_API_KEY = "..." }

Gemini CLI (~/.gemini/settings.json)

{ "mcpServers": { "neruva": { "command": "npx", "args": ["-y", "@neruva/mcp@latest"], "env": { "NERUVA_API_KEY": "..." } } } }

The substrate, in one paragraph

Five layers, one API. Records = typed agentic events (decisions, mistakes, tool_calls, llm_turns; auto-embedded at D=1024). Knowledge Graph = mutable structured state across 5 engines, sub-ms cosine retrieval, matrix-power N-hop derive. Causal = Pearl's do-operator (observation vs intervention arithmetically distinct). Analogy = a🅱️:c:? in HD feature space. Concept Blending = provenance-preserving merge of multiple memories. CBR = factored episode store. The new federated agent_* layer (agent_remember / agent_recall / agent_context) routes across all substrates so a single call handles "where does X store, and how do I get it back?"

Deterministic from a seed. Replayable bit-exactly. Portable as .neruva containers — your data is yours.

Three-line LangChain integration

# pip install neruva-langchain
from neruva_langchain import NeruvaChatMessageHistory
history = NeruvaChatMessageHistory(namespace="user_alice")
# wire into any chain that takes BaseChatMessageHistory

Same pattern: neruva-langgraph (BaseCheckpointSaver + BaseStore), neruva-crewai (Storage interface + 3 memory flavors).

Auto-record for Claude Code

pip install neruva-record && neruva-record-install

Every Claude Code session lands in your Neruva account: tool calls, chat turns, secrets-redacted client-side, queryable across sessions.

Why use this over a vector DB or Zep

Auth

Set NERUVA_API_KEY in env. NERUVA_URL defaults to https://api.neruva.io.

Optional: NERUVA_AUTO_RECORD=namespace[:ttl_days] — every tool call this agent makes auto-records into the named records namespace. Fire-and-forget, never blocks or breaks the call.

Update flow

The startup banner prints when a newer version is available:

[neruva-mcp] update available: you have 0.16.0, latest is 0.16.1.

If registered with @neruva/mcp@latest, a Claude Code restart auto-updates.

License

MIT