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NVIDIA NemoClaw CKG MCP Server

answering

NVIDIA NemoClaw CKG is answering right now. Last checked 8 min ago. 248 installs a week from pypi. It exposes 8 tools.

NVIDIA NemoClaw knowledge graph — 55 nodes, F1 0.576 (+269% vs RAG), 11x fewer tokens. MCP-native.

The linked repository no longer exists on GitHub — it was deleted or made private.

Installs per day peak 310 · avg 95 · -55% w/w
a month agotoday
Uptime history 47 days of history · worst day 99%
47 days agonow
100.0%
Uptime 24h
92 of 92 checks
8
Tools
read from the server
255 ms
Response time
average over 24h
248
Installs / week
npm and PyPI

This one has been quiet for a while

Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

run in your terminal
claude mcp add ckg-nvidia-nemoclaw --transport http https://ckg-nvidia-nemoclaw.onrender.com/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "ckg-nvidia-nemoclaw": {
      "url": "https://ckg-nvidia-nemoclaw.onrender.com/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.ckg-nvidia-nemoclaw]
url = "https://ckg-nvidia-nemoclaw.onrender.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "ckg-nvidia-nemoclaw": {
      "url": "https://ckg-nvidia-nemoclaw.onrender.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "ckg-nvidia-nemoclaw": {
      "url": "https://ckg-nvidia-nemoclaw.onrender.com/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, but it did not say what kind of credentials it expects.

Available tools 8

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

ask
ask_nemoclaw
Answer a question about NVIDIA NemoClaw by traversing the knowledge graph. Covers: agent runtimes (OpenClaw/Hermes/Deep Agents), OpenShell platform, inference routing, network policy, security layers, deployment paths, progressive tool disclosure, managed MCP servers, snapshots, shields, FOX Blueprint, Nemotron 3 Ultra ecosystem, and platform support. Args: question: Your question about NemoClaw concepts or architecture.
ckg
query_ckg
Return the typed subgraph around a NemoClaw concept. Args: concept: Exact or partial concept label (e.g. 'OpenClaw', 'NetworkPolicy', 'L7Proxy'). depth: Traversal hops (1–5, default 3).
concepts
search_concepts
Fuzzy search for NemoClaw concepts by name or keyword. Args: query: Partial name or keyword (e.g. 'policy', 'inference', 'agent').
domains
list_domains
List available domains in this CKG server.
intersect
query_intersect
Answer a conjunctive query: concepts reachable from EVERY anchor at once (A AND B). query_ckg walks outward from one concept. This intersects the reachable sets of two or more, which is the shape of most real questions — "the component that satisfies A AND applies to B". Neither anchor alone answers it; the answer lives in the overlap. Every branch is an exact set of declared edges, so the intersection is exact. A concept appears only if a declared path reaches it from each anchor. A relation missing from the graph produces an empty result, never a guess. Args: branches: Two or more branches. Either a bare anchor ("TensorRT-LLM"), which takes everything within `depth` hops, or an anchor plus an explicit relation path using '>' ("TensorRT-LLM > REQUIRES > ENABLES"), where each relation replaces the frontier. '*' matches any relation. Mix both forms freely. depth: Hops for bare-anchor branches, 1-5 (default 2). Ignored for explicit paths. direction: 'out' follows dependencies, 'in' follows them backwards, 'both' (default). mode: 'AND' (default) intersects branches; 'OR' unions them. limit: Max concepts listed, 1-200 (default 40). The true count is always shown. Returns: Markdown with the query plan and its per-step set sizes, then the answer set with taxonomy tags. Reports which branch was empty when the intersection is empty.
prerequisites
get_prerequisites
Return the full upstream prerequisite chain for a NemoClaw concept. Useful for understanding what a concept depends on end-to-end. Args: concept: Exact or partial concept label.
route
route_query
Route a NemoClaw question to the optimal model and reasoning approach via graph depth. The CKG graph IS the router. NemoClaw's dependency chains (e.g. OpenShell → L7Proxy → CorporateCA → mTLS) are deep and typed — hop depth is a deterministic complexity signal. No heuristic: the graph decides which model and reasoning approach to use. Routing table: hop_depth 1 → haiku · direct (single concept lookup) hop_depth 2 → sonnet · generic_cot (moderate chain) hop_depth 3+ → opus · sparql_cot (deep chain, structured reasoning required) Args: question: Concept name or natural language question about NemoClaw / OpenShell. Returns: model_tier + reasoning_approach + why + context subgraph to inject before LLM call.
verify
verify_source
Return the authoritative source URL and content hash for a NemoClaw concept node. Every node in the CKG was declared from a specific source document. This tool returns the source URL (where the node came from) and the SHA-256 hash of that document's bytes at extraction time. A hash mismatch on re-fetch means either the source has changed (stale edge — re-extract) or the graph was patched without re-fetching (silent edit — investigate). Audit chain: edge answer → graph commit → source_hash → source_url (fetch hint) Verification: curl -s <source_url> | sha256sum # compare output to source_hash Args: concept: Exact or partial concept label (e.g. 'CorporateCA', 'L7Proxy').

Endpoints

URLTransportStateLatencyChecked
https://ckg-nvidia-nemoclaw.onrender.com/mcp streamable-http needs auth 190 ms 8 min ago

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NVIDIA NemoClaw CKG — questions

Answers built from our own checks of this server.

What can NVIDIA NemoClaw CKG do?
It exposes 8 tools, read directly from the server on our last check. Among them: ask_nemoclaw, get_prerequisites, list_domains, query_ckg, query_intersect, route_query and 2 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is NVIDIA NemoClaw CKG working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 255 ms. The bar chart above shows every period we have measured.
Is NVIDIA NemoClaw CKG still maintained?
The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.
How do I connect NVIDIA NemoClaw CKG?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You will need your own credentials: it refuses anonymous clients.
Does NVIDIA NemoClaw CKG need an API key?
Yes. Every time we knock, NVIDIA NemoClaw CKG answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.
How fast is NVIDIA NemoClaw CKG?
It answers our handshake in 255 ms on average, which is faster than 57% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use NVIDIA NemoClaw CKG?
The pypi package ckg-nvidia-nemoclaw was installed 248 times in the last week. Week over week that is -55%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.