Automatically synchronize documentation with code changes using AST-based drift detection (Phase 3)
AI agents use sync_code_to_docs to create or update resources in Documcp — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Documcp environment.
This tool updates/writes documentation to reflect code changes. It modifies documentation artifacts, which is a Write operation. Severity is high because automated, broad documentation changes across a repository could overwrite correct content or introduce widespread errors if misused.
From the tool's definition 'Automatically synchronize documentation with code changes' and 'AST-based drift detection' — modifies documentation content based on code analysis
Documented attack patterns abuse exactly the kind of access sync_code_to_docs gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Documcp, and nothing reaches the server without passing your rules. This is the rule we recommend for sync_code_to_docs:
{
"version": "1",
"default": "deny",
"tools": {
"sync_code_to_docs": {
"limits": [
{
"counter": "sync_code_to_docs_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}sync_code_to_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.
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Automatically synchronize documentation with code changes using AST-based drift detection (Phase 3). It is categorised as a Write tool in the Documcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Docu MCP server in PolicyLayer and add a rule for sync_code_to_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 Documcp. Nothing to install.
sync_code_to_docs is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the sync_code_to_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.
Set action: deny in the PolicyLayer policy for sync_code_to_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.
sync_code_to_docs is provided by the Docu MCP server (tosin2013/documcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Documcp, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
52 Documcp tools catalogued and risk-classified — across an index of 43,000+ MCP servers.