// SCAN REPORT

Voice Bridge

4 tools. 2 can modify or destroy data without limits.

2 write tools that can modify data. Rate limits recommended.

Last updated: 1 Jul 2026

2 can modify or destroy data

2 read-only

4 tools total

Community server · catalogue entry verified 01/07/2026

How to control Voice Bridge ↓

TOOL MAP

What Voice Bridge exposes to your agents

Read (2) Write / Execute (2) Destructive / Financial (0)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

High Risk

The most dangerous Voice Bridge tools

Execute · Medium speak This tool executes an action on the host system (producing audio output), which constitutes an external side-effect beyond simple data read/write. Write · Low set_engine This tool creates or modifies settings (the default TTS engine selection) in a reversible manner.

2 of Voice Bridge's 4 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control Voice Bridge

PolicyLayer is an MCP gateway — it sits between your AI agents and Voice Bridge, and nothing reaches the server without passing your rules. These are the rules we recommend:

Rate limit write operations

{
  "set_engine": {
    "limits": [
      {
        "counter": "set_engine_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "get_status": {
    "limits": [
      {
        "counter": "get_status_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register Voice Bridge — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON VOICE BRIDGE →

Instant setup, no code required.

FULL CATALOGUE

All 4 Voice Bridge tools

EXECUTE 1 tools

Execute speak Speak text aloud using the configured TTS engine.

WRITE 1 tools

Write set_engine Switch the default TTS engine.

READ 2 tools

Read get_status Get current Voice Bridge status: mode, engine, and available engines. Read list_voices List available voices for a TTS engine.

FAQ

Questions about Voice Bridge

How do I prevent bulk modifications through Voice Bridge? +

The Voice Bridge server has 1 write tools including set_engine. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach Voice Bridge.

How many tools does the Voice Bridge MCP server expose? +

4 tools across 2 categories: Read, Write. 2 are read-only. 2 can modify, create, or delete data.

How do I enforce a policy on Voice Bridge? +

Register the Voice Bridge MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every Voice Bridge tool call.

Deterministic rules across all 4 Voice Bridge tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON VOICE BRIDGE →

Instant setup, no code required.

4 Voice Bridge tools catalogued and risk-classified — across an index of 43,000+ MCP servers.