post_event

A write tool on the Nogra MCP server.

SERVERNogra SOURCE@nograai/mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-nograai-nogra-mcp/post-event.md

WHAT IT DOES

What post_event does on Nogra

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

RISK

Why post_event is rated Medium

Without a description, confidence is reduced. However, 'post' semantics imply mutation—likely creating or appending an event record. This is reversible (Write) rather than destructive. Given the context of a 'verify-before-done trust layer,' posting events may trigger notifications or logs, which could have downstream effects but are not inherently destructive or financial.

From the tool's definition Tool name 'post_event' suggests creating or recording an event entry. The empty description prevents confirmation of specific effects, but 'post' typically indicates a write/create operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs post_event safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Nogra, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For post_event, this is the rule to start with:

post_event Rate-limited

post_event 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": {
    "post_event": {
      "limits": [
        {
          "counter": "post_event_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Nogra, apply this rule, and every post_event call is checked against it from then on.

FAQ

Questions about post_event

What does the post_event tool do? +

post_event is a write tool on the Nogra MCP server. It is categorised as a Write tool in the Nogra MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on post_event? +

Register the Nogra MCP server in PolicyLayer and add a rule for post_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 Nogra. Nothing to install.

What risk level is post_event? +

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

Can I rate-limit post_event? +

Yes. Add a rate_limit block to the post_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 post_event completely? +

Set action: deny in the PolicyLayer policy for post_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 post_event? +

post_event is provided by the Nogra MCP server (@nograai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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