Low Risk

retrieve_event

Retrieve a single event by id. Useful when auditing a webhook delivery or replaying state — fetch the event Coinbase Commerce recorded server-side and compare against what your endpoint received.

How to control retrieve_event ↓

What retrieve_event does on Mcp Ap2

AI agents call retrieve_event to retrieve information from Mcp Ap2 without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

Why retrieve_event needs a policy

This tool retrieves and fetches event data for auditing purposes without creating, modifying, deleting, or executing any operations. It is a straightforward data retrieval mechanism with no side effects, making it a Read category tool. The audit and compliance context lowers risk; an agent misusing this would gain visibility but not control over financial systems.

From the tool's definition 'Retrieve a single event by id' and 'fetch the event' indicate a retrieval operation with no modification. The context emphasizes auditing and comparing recorded data, which are read-only activities.

Documented attack patterns abuse exactly the kind of access retrieve_event gives an agent:

How to control retrieve_event

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for retrieve_event:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "retrieve_event": {}
  }
}

retrieve_event is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Mcp Ap2 — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about retrieve_event

What does the retrieve_event tool do? +

Retrieve a single event by id. Useful when auditing a webhook delivery or replaying state — fetch the event Coinbase Commerce recorded server-side and compare against what your endpoint received. It is categorised as a Read tool in the Mcp Ap2 MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on retrieve_event? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for retrieve_event: 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 Mcp Ap2. Nothing to install.

What risk level is retrieve_event? +

retrieve_event is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit retrieve_event? +

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

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

retrieve_event is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Ap2 tool call.

Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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1300 Mcp Ap2 tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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