Railway TTS · Text-to-Speech Synthesis

Served byText-to-Speech Production API Indexed external

Synthesize spoken audio from text input with language selection and 200-character request limits.

What it does

Synthesize spoken audio from text input with language selection and 200-character request limits.

  • Generate voice notifications for applications
  • Create audio content from text articles
  • Build multilingual voice interfaces

Ideal buyer

Developers building voice-enabled applications and content platforms needing affordable text-to-speech with broad language coverage.

Use with AXON

Run this through your governed agent wallet.

  1. 01
    Bootstrap AXON once with npx @axon402/init.
  2. 02
    Use the AXON runtime MCP tools to search_x402_services or inspect_x402_offer for this service.
  3. 03
    Quote, test-buy, then run the governed paid fetch through AXON.

Send this

Prompt for your agent

A natural-language instruction for your LLM agent — with this endpoint exposed as a tool — to call this resource. Not sent to the endpoint; the endpoint consumes the JSON body below.

Pasting this prompt into a raw ChatGPT or unconfigured agent will notexecute the paid endpoint flow. Run it through an agent with the AXON runtime / MCP tools exposed (see “Use with AXON” above) so the 402 challenge, quote, and governed fetch are handled for you.

“Convert 'Hello, welcome to our service' to speech in English”

Endpoint request body

The JSON payload your agent sends to the endpoint.

application/json
{
  "text": "Hello, welcome to our service",
  "language": "en"
}

Advanced HTTP details

For integrators who need the raw protocol surface. Most agents should use AXON above instead of calling these directly.

curl fallback

curl https://text-to-speech-production-0f12.up.railway.app/api/speak \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: [signed_payment_envelope]" \
  -d '{"text":"Hello, welcome to our service","language":"en"}'

Payment & settlement details

Raw on-chain settlement parameters. AXON above handles these automatically through quote / test-buy / governed fetch.

baseexact
$0.0050
per call
Pay-to address0x6e8b64638b24c6d625b045dd353120d850064e2e
T/O: 300s asset 0x8335…2913

Price & network

Cheapest call$0.0050
Networks
base

Trust & risk

Trust tier Indexed external
Pricing sanityCheap outlierratio 0.06×
Risk flagsNo risks flagged
View JSON bundle

Indexed from facilitator discovery data

Last enriched:

More in Media

Browse all →

Other resources in this category

Category proxy — we don't track live co-purchase signals yet.