// SCAN REPORT

Mcp Graph Engine

24 tools. 12 can modify or destroy data without limits.

4 destructive tools with no built-in limits. Policy required.

Last updated: 12 Jun 2026

12 can modify or destroy data

12 read-only

24 tools total

Community server · catalogue entry verified 12/06/2026

How to control Mcp Graph Engine ↓

TOOL MAP

What Mcp Graph Engine exposes to your agents

Read (12) Write / Execute (8) Destructive / Financial (4)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

Critical Risk

The most dangerous Mcp Graph Engine tools

Destructive · High delete_graph This tool performs an irreversible deletion of a graph session, destroying all associated data, nodes, edges, and analysis results without recovery. Destructive · High forget This tool performs irreversible deletion of nodes and their connections in the graph database. Destructive · High forget_relationship This tool performs an irreversible deletion operation on graph data by removing edges (relationships). Destructive · High transitive_reduction This tool irreversibly deletes edges from the graph.

12 of Mcp Graph Engine's 24 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control Mcp Graph Engine

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Graph Engine, and nothing reaches the server without passing your rules. These are the rules we recommend:

Deny destructive operations

{
  "delete_graph": {
    "deny_if": [
      {
        "conditions": [],
        "on_deny": "Blocked by default. Requires approval."
      }
    ]
  }
}

Destructive tools should never be available to autonomous agents without human approval.

Rate limit write operations

{
  "add_facts": {
    "limits": [
      {
        "counter": "add_facts_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "ask_graph": {
    "limits": [
      {
        "counter": "ask_graph_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register Mcp Graph Engine — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON MCP GRAPH ENGINE →

Free to start. No card required.

FULL CATALOGUE

All 24 Mcp Graph Engine tools

DESTRUCTIVE 4 tools

Destructive delete_graph Delete a graph session Destructive forget Remove a node and its connected edges Destructive forget_relationship Remove an edge from the graph Destructive transitive_reduction Remove redundant transitive edges (if A->B->C and A->C exist, remove A->C)

EXECUTE 3 tools

Execute stop_visualization Stop the visualization server. Execute cypher_query cypher_query Execute visualize_graph Open browser visualization at localhost URL. Updates in real-time.

WRITE 5 tools

Write add_facts Add facts (relationships) to the graph. Nodes are auto-created if they don Write add_knowledge Add knowledge using text DSL. Format: Write create_from_mermaid Create graph from Mermaid flowchart. Edge labels become relation types. Write import_graph Import graph from DOT, CSV, GraphML, or JSON. Merges into existing graph. Write update_visualization_filter Update Cypher filter for visualization. Empty string clears filter.

READ 12 tools

Read ask_graph Pattern-matching queries: Read dump_context Get complete graph summary: nodes by type, relationships, and insights (hubs, cycles, orphans). Read find_cycles Detect cycles (circular dependencies) in the graph Read get_graph_info Get graph statistics and info Read list_graphs List all graph sessions with statistics Read all_paths Find all simple paths between two nodes. Fuzzy matches labels. Read connected_components Find weakly connected components (node groups connected by paths) Read degree_centrality Calculate in/out degree centrality to find highly connected nodes Read export_graph Export graph to DOT, CSV, GraphML, JSON, or Mermaid format. Read pagerank Calculate PageRank scores for node importance Read shortest_path Find shortest path between two nodes (Dijkstra). Fuzzy matches node labels. Read subgraph Extract subgraph with specified nodes and their interconnections. Fuzzy matches labels.

EXPLORE

Related servers

Other MCP servers with similar tools — same risk classification, starter policies for each.

FAQ

Questions about Mcp Graph Engine

Can an AI agent delete data through the Mcp Graph Engine MCP server? +

Yes. The Mcp Graph Engine server exposes 4 destructive tools including delete_graph, forget, forget_relationship. These permanently remove resources with no undo. PolicyLayer blocks destructive tools by default so they never reach the upstream server.

How do I prevent bulk modifications through Mcp Graph Engine? +

The Mcp Graph Engine server has 5 write tools including add_facts, add_knowledge, create_from_mermaid. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach Mcp Graph Engine.

How many tools does the Mcp Graph Engine MCP server expose? +

24 tools across 4 categories: Destructive, Execute, Read, Write. 12 are read-only. 12 can modify, create, or delete data.

How do I enforce a policy on Mcp Graph Engine? +

Register the Mcp Graph Engine MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every Mcp Graph Engine tool call.

Deterministic rules across all 24 Mcp Graph Engine tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON MCP GRAPH ENGINE →

Free to start. No card required.

24 Mcp Graph Engine tools catalogued and risk-classified — across an index of 43,000+ MCP servers.