Agents need certainty. LLMs give probability. Compact Knowledge Graphs (CKGs) are the missing layer — structured, auditable domain knowledge served over MCP. 269 tokens per query vs 2,982 for RAG. F1 0.471, +283% vs RAG baseline. SHA-256 provenance on every node. Drop-in MCP servers, no infra required.
New: CKG Router — deterministic context + model routing from graph depth. route_query() returns the right subgraph AND the right model tier (haiku/sonnet/opus) derived from hop count. No heuristic — the graph decides. 4× more accurate, 90% cheaper, routed automatically.
| Package | Domain | F1 | Downloads |
|---|---|---|---|
| ckg-mcp | 97 domains · full stack · CKG Router | — | |
| ckg-nvidia-ai | NVIDIA AI · NIM · NeMo · 20 domains · 1,055 nodes · CKG Router | — | |
| ckg-nvidia-nemoclaw | NemoClaw · 55 nodes / 74 edges · CKG Router | 0.576 | |
| ckg-agentforce | Salesforce AgentForce · billing + permissions · CKG Router | — | |
| ckg-nemotron-perplexity | Nemotron + Perplexity Sonar · 83 nodes | — | |
| langchain-ckg | LangChain retriever · CKGRetriever + CKGHostedRetriever | — |
uvx ckg-mcp # 97 domains — any agent stack
uvx ckg-nvidia-ai # NVIDIA AI · NIM · NeMo · NemoClaw
uvx ckg-agentforce # Salesforce AgentForce
# CKG Router — deterministic context + model routing
route_query("TensorRT-LLM", "nvidia-tensorrt-triton")
# → model_tier: opus · reasoning: sparql_cot · why: 4-hop chain
# → context subgraph: 847 tokens (not 10,000)| System | Macro F1 | Tokens/query | Cost @ $10/1M |
|---|---|---|---|
| ▸ CKG | 0.471 | 269 | $0.003 |
| RAG | 0.123 | 2,982 | $0.030 |
| GraphRAG | 0.120 | 3,450 | $0.035 |
ckg-benchmark v0.6.2 · 97 domains · dataset · paper · patent pending
F1 scales with hop depth: 0.374 → 0.772 at hop=5. RAG plateaus at hop=2.
| Tier | Calls | Price | Best for |
|---|---|---|---|
| Free | 50/day | — | Evaluation |
| Dev | Unlimited | $10/yr | Solo devs, small teams |
| Pro | Unlimited + priority | $99/yr | Production |
| Sealed | On-prem Docker appliance | $299 | Enterprise / air-gap |
Upgrade → graphifymd.com/pricing · Dev $10/yr