OpenAI-compatible text-to-speech over x402 - point any OpenAI SDK's audio.speech.create() at base_url https://agent402.tools/v1 and pay $0.06 per call in USDC, no API key, no signup. Served by Voxtral Mini TTS behind a five-model failover chain (xAI Grok Voice, Kokoro, MAI-Voice-2 Flash, MAI-Voice-2), every link proven by a real paid canary - a provider outage never becomes your failure. Up to 2,000 chars in, raw mp3 (default) or pcm bytes out - the same wire shape as OpenAI's endpoint.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.06 USDC | 0xaBF4...a9D0 |
| Polygon | exact | $0.06 USDC | 0xaBF4...a9D0 |
| Arbitrum One | exact | $0.06 USDC | 0xaBF4...a9D0 |
| eip155:143 | exact | 0.06 tokens | 0xaBF4...a9D0 |
| eip155:43114 | exact | 0.06 tokens | 0xaBF4...a9D0 |
| eip155:1329 | exact | 0.06 tokens | 0xaBF4...a9D0 |
| Optimism | exact | $0.06 USDC | 0xaBF4...a9D0 |
| eip155:4663 | exact | 0.06 tokens | 0xaBF4...a9D0 |
| Celo | exact | 0.06 tokens | 0xaBF4...a9D0 |
| Base | upto | $0.06 USDC | 0xaBF4...a9D0 |
| solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp | exact | 0.06 tokens | J7aN3P...3xwg |
| stellar:pubnet | exact | 0.60 tokens | GDNJXC...WWRL |
| algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8= | exact | 0.06 tokens | C7IIHG...2XIE |