ai.translate

Translate text. POST { text, targetLanguage, sourceLanguage? } — language codes are BCP-47 (e.g. "en", "es-MX", "zh-Hans"). Source auto-detected when omitted. Returns { text, targetLanguage, detectedSourceLanguage, confidence (high|medium|low) }. Best for short-to-medium passages; chunk long documents on your side.

price

$0.0075 USDC per call

method

POST/api/ai/translate

payment

x402 v2 · EIP-3009 transferWithAuthorization · USDC on Base mainnet

auth

None. Sign the payment, retry with PAYMENT-SIGNATURE.

tier

Tier 2 — LLM/render upstream included

Parameters

Name	Type	Description
`text`required	string	Source text to translate (1-6000 chars). min 1 chars · max 6000 chars
`targetLanguage`required	string	Target language as BCP-47 (e.g. "en", "es-MX", "zh-Hans"). min 2 chars · max 20 chars
`sourceLanguage`	string	Source language as BCP-47. Auto-detected when omitted. min 2 chars · max 20 chars

Code samples

cURLbash

# 1. Probe the endpoint with no auth — receive 402 with PaymentRequirements
curl -sS -X POST 'https://2s.io/api/ai/translate' \
  -H 'Content-Type: application/json' \
  -d '{"text":"example","targetLanguage":"xx","sourceLanguage":"xx"}'

# 2. Sign the EIP-3009 transferWithAuthorization for the advertised price +
#    payTo from the 402 envelope, then retry with PAYMENT-SIGNATURE:
curl -sS -X POST 'https://2s.io/api/ai/translate' \
  -H 'Content-Type: application/json' \
  -H 'PAYMENT-SIGNATURE: <base64-json-payload>' \
  -d '{"text":"example","targetLanguage":"xx","sourceLanguage":"xx"}'

# Or just use the canonical runner — it handles the whole loop:
#   EVM_PRIVATE_KEY=0x... node --env-file=.env.local \
#     --experimental-strip-types scripts/x402-pay.ts \
#     'https://2s.io/api/ai/translate'

TypeScript / Node — @2sio/sdktypescript

import { TwoS } from '@2sio/sdk'

const client = new TwoS({
  privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})

const result = await client.ai.translate({
  "text": "example",
  "targetLanguage": "xx",
  "sourceLanguage": "xx"
})

console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)

Python — 2siopython

import os
from twosio import TwoS

client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])

result = client.ai.translate(text="example", targetLanguage="xx", sourceLanguage="xx")

print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)

MCP — Claude Desktop / AgentKit / any MCP hostjson

// 1. Add @2sio/mcp to your MCP host config (Claude Desktop example below).
//    EVM_PRIVATE_KEY funds x402 payments per call.

// claude_desktop_config.json
{
  "mcpServers": {
    "2sio": {
      "command": "npx",
      "args": ["-y", "@2sio/mcp"],
      "env": { "EVM_PRIVATE_KEY": "0x..." }
    }
  }
}

// 2. Once the server is running, agents call this tool via standard MCP:

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "ai.translate",
    "arguments": {
      "text": "example",
      "targetLanguage": "xx",
      "sourceLanguage": "xx"
    }
  }
}

Response

Field	Type	Description
`text`	string	Translated text in targetLanguage.
`targetLanguage`	string
`detectedSourceLanguage`	string	BCP-47 source language tag (echoed when supplied, detected otherwise).
`confidence`	string	Model confidence in the translation. one of: high \| medium \| low

Example response datajson

{
  "text": "example",
  "targetLanguage": "example",
  "detectedSourceLanguage": "example",
  "confidence": "high"
}

Discovery

/api/directory — full catalog of every endpoint
/openapi.json — OpenAPI 3.1 spec (per-op x-payment-info, x402Payment security)
/.well-known/x402 — machine-readable service descriptor for x402-aware crawlers
/.well-known/mcp/server-card.json — MCP SEP-1649 server card
/llms.txt — plain-text manifest for LLM ingestion

2s.io is x402-native. Every call is paid per-request from a USDC-funded EVM wallet on Base — no signup, no API keys, no monthly fees. Source code: github.com/2s-io/sdk.