complete_oauth · Healow MCP: Risk & Policy

WHAT IT DOES

What complete_oauth does on Healow

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

WHY IT NEEDS A POLICY

Why complete_oauth needs a policy

This tool completes an OAuth flow by exchanging an authorization code for access/refresh tokens. It creates/stores credential tokens (a write/state-change operation) and enables subsequent authenticated access to patient clinical data. It is not purely read-only (it produces and stores tokens), not destructive, and not financial.

From the tool's definition Exchange an authorization code (and its state) for tokens

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

complete_oauth Rate-limited

complete_oauth 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": {
    "complete_oauth": {
      "limits": [
        {
          "counter": "complete_oauth_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 Healow, so you can run agents against it safely.

FAQ

Questions about complete_oauth

What does the complete_oauth tool do? +

Exchange an authorization code (and its state) for tokens. Returns the. It is categorised as a Write tool in the Healow MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on complete_oauth? +

Register the Healow MCP server in PolicyLayer and add a rule for complete_oauth: 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 Healow. Nothing to install.

What risk level is complete_oauth? +

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

Can I rate-limit complete_oauth? +

Yes. Add a rate_limit block to the complete_oauth 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 complete_oauth completely? +

Set action: deny in the PolicyLayer policy for complete_oauth. 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 complete_oauth? +

complete_oauth is provided by the Healow MCP server (voysi-ia/healow-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.