fix_beat

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/fix-beat.md

WHAT IT DOES

What fix_beat does on Hermoso

AI agents use fix_beat 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 fix_beat is rated Medium

The tool modifies an existing video file by re-rendering a specific segment and splicing it back in. This is a targeted, reversible modification of existing data (the original video), making it a Write operation. It does not execute arbitrary code, delete data, or involve financial transactions.

From the tool's definition Surgically re-render ONE time window of an existing rendered video and splice it back on the VIDEO TRACK ONLY — the rest of the video and ALL audio stay byte-identical

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs fix_beat 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 fix_beat, this is the rule to start with:

fix_beat Rate-limited

fix_beat 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": {
    "fix_beat": {
      "limits": [
        {
          "counter": "fix_beat_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 fix_beat call is checked against it from then on.

FAQ

Questions about fix_beat

What does the fix_beat tool do? +

Surgically re-render ONE time window (1.5-8s) of an existing rendered video and splice it back on the VIDEO TRACK ONLY — the rest of the video and ALL audio stay byte-identical. Use when one beat/shot is broken (. 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 fix_beat? +

Register the Hermoso MCP server in PolicyLayer and add a rule for fix_beat: 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 fix_beat? +

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

Can I rate-limit fix_beat? +

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

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

fix_beat 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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