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A live, machine-queryable index of AI agents, MCP servers and tools. Every record separates what publishers declare from what we observed.

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Records are indexed from public sources and attributed to them. Observed data is ours; declared data is theirs.PrivacyTermsv0.1 · early network
Capabilities/Knowledge & Memory/knowledge.knowledge-graph

Knowledge Graphs

Graph-structured knowledge.

1.3k records371 liveRefine in search →
TangoMCP serverMCP
by dev.tango
Live

MCP access to the U.S. federal procurement graph: contracts, opportunities, entities, and more.

Knowledge Graphs~79%
https://tango.dev/mcpok 7 h ago
deadends.devAgentA2A
by deadends.dev
Live

Structured error knowledge database for AI coding agents. 2632 error patterns across 54 domains (android, api, aws, banking, cicd, cloud, cmake, communication, cuda, culture, data, database, disaster, docker, dotnet, elasticsearch, embedded, emergency, flutter, food-safety, git, go, grpc, huggingfa…

Travel & BookingCloud Platforms~100%Contracts & LegalKnowledge GraphsDatabases~100%
https://deadends.devok 2 h ago
Agently BrainMCP serverMCP
by dev.agently
Live

Company brain for AI agents — temporal knowledge graph search, exploration, and durable memory.

Knowledge Graphs~84%
https://api.agently.dev/mcpok 2 h ago
WauldoMCP serverMCP
by com.wauldo
Live

Stateless agentic tools over MCP: concept extraction, long-context, knowledge graph, planning.

Knowledge Graphs~84%
https://api.wauldo.com/mcpok 4 h ago
OntoRamp Knowledge CartographerMCP serverMCP
by com.ontoramp
Live

Knowledge coverage map and health score. Ingest docs into a governed knowledge graph via MCP.

Knowledge Graphs~84%
https://ontoramp-knowledge-cartographer.fly.dev/mcpok 5 h ago
memoryMCP serverMCP
by com.humaux
Live

Persistent long-term memory for AI agents: semantic search, knowledge graph, and task canvas.

Agent Memory~100%Knowledge Graphs~84%
https://humaux.com/memory/mcpok 4 h ago
Arc ResearchMCP serverMCP
by com.getarcresearch
Live

Commodities research MCP: knowledge graph, COT, NG storage/weather, quotes, and stories.

Knowledge Graphs~84%
https://www.getarcresearch.com/mcpok 7 h ago
AttroveAgentA2A
by Attrove
Live

Communication intelligence for AI products. Query a user's email, Slack, calendar, meetings, and saved notes through a single authenticated retrieval surface.

Calendar & SchedulingTeam ChatEmailNotes & DocsData Extraction
https://attrove.comok 5 h ago
Aiqbee BrainMCP serverMCP
by com.aiqbee
Live

AI knowledge graph for architecture, portfolio, and digital strategy management.

Knowledge Graphs~84%
https://mcp.aiqbee.com/mcpok 2 h ago
ContextaMCP serverMCP
by cc.contexta
Live

Persistent memory and knowledge graph for AI assistants — keyword + vector + graph search.

Agent Memory~85%Knowledge Graphs~84%
https://mcp.contexta.cc/mcpok 6 h ago
RoboSystemsMCP serverMCP
by ai.robosystems
Live

Accounting knowledge graphs: SEC XBRL filings, QuickBooks ledgers, reports and forecasts over MCP.

Accounting~100%Knowledge Graphs~84%
https://api.robosystems.ai/v1/mcpok 8 h ago
endiagram-mcpMCP serverMCP
by dushyant30suthar
Recently observed

EN Diagram — structural verification for concurrent systems. Pure math, no AI.

Knowledge Graphs~100%CI/CD & Deploy~53%CRM & Sales~53%
https://api.endiagram.com/mcp177/wkpublished 6 mo agook 34 h ago
Santismm Knowledge — Harness Engineering, Agentic AI & GovernanceMCP serverMCP
by com.santismm
Recently observed

Query core AI knowledge, essays, executable Labs, Homeric data and epistemic claims.

Knowledge Graphs~100%Evaluation & Benchmarks~100%Maps & Places~99%Translation~55%Documentation Lookup~54%
https://santismm.com/mcp22/wkpublished 2 mo agook 3 d ago
404.directoryMCP serverMCP
by MM-sheng
Recently observed

Risk preflight for AI Agent tool actions and Polymarket settlement and execution checks.

Code Documentation~100%Filesystem~100%Knowledge Graphs~100%Cloud Platforms~100%Agent Discovery~100%
https://404.directory/mcp12/wkpublished 2 mo agook 3 d ago
BankWeaveMCP serverMCP
by LSUDOKO
Recently observed

Read-only FalkorDB tools for cross-bank AML investigations: rings, money paths, echo-proof claims.

Knowledge Graphs~100%Banking~83%Evaluation & Benchmarks~51%
https://bankweave-api.onrender.com/mcpok 28 h ago
Wealth AgentMCP serverMCP
by jukky-source
Recently observed

x402 pay-per-call tools for AI agents: code review, data clean, briefs, regex, diff, URL meta.

Code Review~100%Markets & Trading~100%SEO~98%Cloud Platforms~55%Translation~54%
https://wealth-agent.wealthagent-app.workers.dev/api/mcpok 34 h ago
SeaWebMCP serverMCP
by tech.seaweb
Recently observed

Read-only web search for AI agents; does not book, reserve or take payment. Stores your preferences.

Databases~100%Notifications~100%Agent Memory~99%Web Search~99%Data Extraction~55%
https://api.seaweb.tech/mcpok 2 d ago
Hispanic LegacyMCP serverMCP
by com.hispanic-legacy
Recently observed

Spain's contributions to world science, exploration and culture, rigorously sourced

Knowledge Graphs~100%
https://hispanic-legacy.com/mcp?via=manifestok 3 d ago
Football AtlasMCP serverMCP
by app.futbolatlas
Recently observed

The Laws of the Game and world football's major competitions, every claim cited to primary sources

Knowledge Graphs~100%
https://futbolatlas.app/mcp?via=manifestok 4 d ago
Agent ReliabilityMCP serverMCP
by dev.agentreliability
Recently observed

Testing, benchmarking and auditing autonomous AI agents — methods, harnesses, evidence

Knowledge Graphs~100%
https://agentreliability.dev/mcp?via=manifestok 4 d ago
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Machine query
GET /api/v1/search?capability=knowledge.knowledge-graph&status=live
Aliases

knowledge graph, graph, neo4j, ontology, entities

Also in Knowledge & Memory
  • Agent Memory
  • Reasoning & Planning