knowledge-graph mcp servers

2,856 tagged knowledge-graph, measured the same way as everything else here.

Browse within: local-first 29ai-memory 26agent-memory 25embeddings 16fastapi 10code-intelligence 9copilot 9markdown 9agentic 7code-analysis 7llm-tools 7agent-tools 6graph-database 6obsidian 6

green-dalii/obsidian-llm-wiki

Instructions file CodexOpenCode

Instructions for green-dalii/obsidian-llm-wiki, covering llm wiki plugin project development standards, 🛡️ six-gate quality closure, gate 1: five-gate automated, gate 2: no side effects and gate 3: no breaking changes.

515 3d ago A 7,700 tokens original Apache-2.0

green-dalii/obsidian-llm-wiki

Instructions file

Instructions for green-dalii/obsidian-llm-wiki, a project described as: Karpathy's LLM Wiki implementation plugin for Obsidian - turns notes and PDFs into a linked, LLM-powered knowledge base with entity pages, concept pages, graph-powered Q&A, and local-first privacy.

515 3d ago A 234 tokens original Apache-2.0

bootstrap-memory

75

0xK3vin/MegaMemory

Command

RUN { git ls-files; git ls-files --others --exclude-standard; } 2>/dev/null | sort -u | xargs wc -l 2>/dev/null | sort -rn | head -150 READ README.md.

513 +1 4mo ago A 0 tokens original MIT

save-memory

76

0xK3vin/MegaMemory

Command

You are saving what you learned this session into the megamemory knowledge graph. This is YOUR memory — record anything valuable for future sessions: what you understood about the project, what you built, decisions that were made, patterns you noticed, or intent the user shared.

513 +1 4mo ago A 0 tokens original MIT

octopoda-memory

77

RyjoxTechnologies/Octopoda-OS

Skill Claude CodeCodex

Persistent memory across sessions — recall, store, share, audit decisions, snapshots, and version history.

488 +5 1mo ago A 24 tokens

memtrace-skills

79

syncable-dev/memtrace-public

Plugin Claude Code

Memtrace skills for codebase exploration, code search, relationship analysis, temporal evolution, blast radius impact, code quality, graph algorithms, API topology, GitHub PR code review, multi-agent fleet coordination (branch-scoped intents, conflict classification, and agent-judged Class C resolution), and…

467 13d ago A tokens not measured

syncable-dev/memtrace-public

Skill Claude CodeCodex

Use Cortex decision memory through the normal Memtrace MCP tools. Trigger for free-text questions about what was decided, chosen, rejected, banned, or established as a convention; for why a symbol exists or which contracts constrain it; for whether a known decision held, drifted, or was violated; and for the…

467 13d ago A 137 tokens

memtrace-first

84

syncable-dev/memtrace-public

Skill Claude CodeCodex

Route code discovery, debugging, flow tracing, how-code-works questions, and pre-edit rationale checks in indexed source-code repos to Memtrace graph plus Cortex decision tools. Use first before searching/reading code, and before editing, refactoring, deleting, or re-picking an approach that may have a recorded…

467 13d ago A 115 tokens

syncable-dev/memtrace-public

Skill Claude CodeCodex

Coordinate fleets of coding agents sharing one repo+branch: publish typed intents, classify edit episodes, and resolve conflicts before they collide. Use FIRST when multiple agents work the same repo+branch, before reading/planning/editing, when joining a fleet or handing work off, and when the user says two agents…

467 13d ago A 144 tokens

aaronsb/obsidian-mcp-plugin

Instructions file

Instructions for aaronsb/obsidian-mcp-plugin, covering claude development guidelines for obsidian mcp plugin, project context, code quality guidelines, solid principles application and architecture patterns.

457 16d ago A 6,851 tokens original MIT

open-ontologies

87

fabio-rovai/open-ontologies

Plugin Claude Code

A Terraforming MCP for Knowledge Graphs: validate, classify, and govern AI-generated ontologies.

456 3d ago A tokens not measured original MIT

open-ontologies

88

fabio-rovai/open-ontologies

MCP server Claude CodeCodexCursor +2

MCP server "open-ontologies" as configured in fabio-rovai/open-ontologies. Launched with ./target/release/open-ontologies serve.

456 3d ago A tokens not measured original MIT

fabio-rovai/open-ontologies

Instructions file

Instructions for fabio-rovai/open-ontologies, covering open ontologies, ontology engineering workflow, generate, validate and load and reason.

456 3d ago A 5,098 tokens original MIT

open-ontologies

90

fabio-rovai/open-ontologies

Skill Claude CodeCodex

AI-native ontology engineering using 50+ MCP tools backed by an in-memory Oxigraph triple store. Build, validate, query, and govern RDF/OWL ontologies with a generate-validate-iterate loop. Use when building ontologies, knowledge graphs, RDF data, SPARQL queries, BORO/4D modeling, SHACL validation, clinical…

456 3d ago A 110 tokens original MIT

fabio-rovai/open-ontologies

Skill Claude CodeCodex

Build, validate, and govern RDF/OWL ontologies using the Open Ontologies MCP server. Use when the user asks to create, modify, query, or manage ontologies, knowledge graphs, or RDF data.

456 3d ago A 47 tokens original MIT

agent-recall

92

Goldentrii/AgentRecall-X

Skill Claude CodeCodex

Persistent compounding memory for AI agents. 5 default MCP tools: sessionstart, sessionend, remember, recall, check. Full surface (18 tools) available with --full flag. Two-verb model: inhale (sessionstart) and exhale (sessionend). Correction-first memory with decision trail tracking, watchfor warnings, palace rooms…

370 12d ago B 157 tokens original MIT

vault

93

smixs/agent-second-brain

Plugin Claude Code

Voice-first personal assistant for capturing thoughts and tasks via Telegram, with goal tracking and Obsidian integration.

361 +2 27d ago A tokens not measured original MIT

inbox-processor

94

smixs/agent-second-brain

Agent Claude Code

GTD-style processing of incoming entries. Decide action for each item - do now, schedule, delegate, save, or delete.

361 +2 27d ago A 31 tokens original MIT

note-organizer

95

smixs/agent-second-brain

Agent Claude Code

Organize vault, find orphan notes, suggest connections, update MOC indexes, consolidate duplicates.

361 +2 27d ago A 23 tokens original MIT

autograph

96

smixs/agent-second-brain

Skill Claude CodeCodex

Schema-as-code enforcement for any Obsidian vault. Zero hardcoded domains. Use when creating vault cards, checking vault health, running schema compliance, deduplicating entities, generating MOC indexes, running decay cycles, bootstrapping a vault, fixing wikilinks, finding orphans or backlinks, extracting entities…

361 +2 27d ago A 89 tokens original MIT

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