Otto AI MPP API Reference

curl -v https://mpp.ottoai.services/crypto-news

HTTP/1.1 402 Payment Required
Cache-Control: no-store
Content-Type: application/problem+json
WWW-Authenticate: Payment id="abc123",
    realm="mpp.ottoai.services",
    method="tempo",
    intent="charge",
    request="eyJhbW91bnQiOiIxMDAwIi4uLn0",
    expires="2026-03-20T12:05:00Z"

import { Mppx, tempo } from 'mppx/client'
import { privateKeyToAccount } from 'viem/accounts'

// Create payment handler — polyfills global fetch
Mppx.create({
  methods: [tempo({ account: privateKeyToAccount('0x...') })],
})

// Now fetch handles 402s automatically
const response = await fetch('https://mpp.ottoai.services/crypto-news')
const data = await response.json()
console.log(data) // { status: "success", data: { report: "..." } }

HTTP/1.1 200 OK
Payment-Receipt: eyJzdGF0dXMiOiJzdWNjZXNzIi4uLn0
Content-Type: application/json

{
  "status": "success",
  "data": {
    "report": "Latest crypto market news..."
  }
}

# Install mppx globally
npm install -g mppx

# Create a Tempo wallet (stored in keychain)
mppx account create

# Make a paid request
mppx https://mpp.ottoai.services/crypto-news

# Inspect the 402 challenge without paying
mppx --inspect https://mpp.ottoai.services/token-alpha?symbol=BTC

mppx https://mpp.ottoai.services/crypto-news

mppx "https://mpp.ottoai.services/filtered-news?topic=DeFi"

mppx "https://mpp.ottoai.services/token-details?symbol=ETH"

mppx "https://mpp.ottoai.services/token-alpha?symbol=BTC"

mppx "https://mpp.ottoai.services/token-security?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=8453"

mppx "https://mpp.ottoai.services/funding-rates?symbol=BTC"

{
  "status": "success",
  "data": {
    // Service-specific response data
  }
}

{
  "status": "failed",
  "error": "Description of what went wrong"
}