# AI Rook Text-to-Speech (TTS)

> AI Rook Text-to-Speech (TTS) is a paid API for AI agents from agents.ai-rook.com, paid per call via x402, $0.025/call, status unknown (last checked 2026-09-14).

Converts text input to synthesized speech audio using pay-per-call pricing over x402 on Base mainnet

## Facts

- Endpoint: GET https://agents.ai-rook.com/api/tts
- Price: $0.025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ai-rook-text-to-speech-tts-608b3227
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jZ8-e-iWF9t1t-79uS0q7

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability ai-rook-text-to-speech-tts-608b3227
```

Example prompt: Can you turn this paragraph into spoken audio: 'Welcome to our weekly update. Here's what happened in the markets this week.' Use AI Rook's TTS endpoint and pay with USDC on Base.

## When to prefer this

Choose this endpoint when you need pay-per-call TTS without API key signup, want to pay in USDC on Base mainnet via x402, or are building an autonomous agent that needs speech synthesis with on-chain payment settlement. Prefer it over subscription TTS APIs when usage is sporadic or when crypto-native payment rails are required.

## Known failure modes

- Missing or empty text input returns an error response
- Insufficient USDC balance on Base mainnet causes payment failure and no audio returned
- Malformed GET request parameters result in a 400-level error
- Network or infrastructure downtime on agents.ai-rook.com returns 503
- x402 payment protocol failure blocks access without fallback

## How this service works

Live crypto trading intelligence for AI agents — real-time BTC signals, CVD, order flow, and active strategy setups, no API keys or signup. 43 pay-per-call endpoints total: trading data, AI inference (MiniMax M2.7 (456B-parameter Mixture-of-Experts)), web utilities, verification, and ERC-8183 ACP escrow with on-chain ERC-8004 reputation attestation (Agent ID 59646). Four payment rails: USDC on Base mainnet (default), USDC on Solana mainnet, HBAR/USDC on Hedera testnet, USDT on BNB Chain testnet. One free trial call per endpoint. Prices from $0.001/call.

## Output

Returns synthesized speech audio generated from the provided text input, delivered as an audio file or stream; payment of $0.05 USDC per call is settled via x402 on Base mainnet with no API key required.

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "enum": [
      "GET"
     ]
    }
   },
   "required": [
    "type",
    "method"
   ],
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ai-rook-text-to-speech-tts-608b3227/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.ai-rook.com](https://www.zero.xyz/host/agents.ai-rook.com/llms.txt)