create_posthog_annotation

SERVERHermoso SOURCEhttps://app.hermoso.ai/mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/hermoso/create-posthog-annotation.md

WHAT IT DOES

What create_posthog_annotation does on Hermoso

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

RISK

Why create_posthog_annotation is rated Medium

An AI agent can call create_posthog_annotation faster than any human can review: one bad instruction and it creates or modifies resources in Hermoso by the hundred, each call as confident as the last.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_posthog_annotation safely

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

create_posthog_annotation Rate-limited

create_posthog_annotation 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": {
    "create_posthog_annotation": {
      "limits": [
        {
          "counter": "create_posthog_annotation_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 Hermoso, apply this rule, and every create_posthog_annotation call is checked against it from then on.

FAQ

Questions about create_posthog_annotation

What does the create_posthog_annotation tool do? +

MARK THE POSTHOG TIMELINE — write what just happened into PostHog at the moment it happened, so every chart afterwards shows it in place. The same closed loop as create_amplitude_annotation, and worth reaching for unprompted after a campaign goes live, a creative is swapped or a landing page changes. It is categorised as a Write tool in the Hermoso MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_posthog_annotation? +

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

What risk level is create_posthog_annotation? +

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

Can I rate-limit create_posthog_annotation? +

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

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

create_posthog_annotation is provided by the Hermoso MCP server (https://app.hermoso.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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