docs · Project Graph MCP: Risk & Policy

WHAT IT DOES

What docs does on Project Graph

AI agents use docs to create or update resources in Project Graph — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Project Graph environment.

WHY IT NEEDS A POLICY

Why docs needs a policy

The tool supports multiple actions: 'get' is read-only, but 'generate' creates or overwrites documentation files, and 'check_stale'/'validate_contracts' perform analysis. Since 'generate' can create/modify .ctx documentation files, Write is the most applicable category. Severity is medium as documentation generation could overwrite existing files, but is generally reversible.

From the tool's definition Actions: get|generate|check_stale|validate_contracts

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

docs Rate-limited

docs stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "docs": {
      "limits": [
        {
          "counter": "docs_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Project Graph, so you can run agents against it safely.

FAQ

Questions about docs

What does the docs tool do? +

Documentation (.ctx) management. Actions: get|generate|check_stale|validate_contracts. It is categorised as a Write tool in the Project Graph MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on docs? +

Register the Project Graph MCP server in PolicyLayer and add a rule for docs: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Project Graph. Nothing to install.

What risk level is docs? +

docs is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit docs? +

Yes. Add a rate_limit block to the docs rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block docs completely? +

Set action: deny in the PolicyLayer policy for docs. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides docs? +

docs is provided by the Project Graph MCP server (rnd-pro/project-graph-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.