edi.generate

Generate a ready-to-send ANSI ASC X12 EDI document from structured JSON. POST type ('850' for a Purchase Order or '810' for an Invoice) plus senderId, receiverId, documentNumber (PO# or invoice#), optional date, parties (N1 loops — role like ST/BT/VN + name), and items (quantity, uom, price, productId). For an 810 you can pass poNumber and total. Returns the full X12 interchange in meta.edi — correct ISA/GS/ST…SE/GE/IEA envelope, party loops, PO1/IT1 line items, and CTT/TDS totals (implied 2-decimal). Deterministic, no external calls. The outbound complement to edi.parse and edi.ack: assemble valid EDI envelopes instead of hand-rolling segment terminators and control numbers.

price

$0.0018 USDC per call

method

POST/api/edi/generate

payment

x402 v2 · USDC on Base (EIP-3009) or Solana (SPL transfer)

auth

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

tier

Tier 0 — no paid upstream

Parameters

Name	Type	Description
`type`required	string	one of: 850 \| 810
`senderId`required	string	min 1 chars · max 15 chars
`receiverId`required	string	min 1 chars · max 15 chars
`senderQualifier`	string	max 2 chars
`receiverQualifier`	string	max 2 chars
`documentNumber`required	string	min 1 chars · max 60 chars
`poNumber`	string	max 60 chars
`date`	string	max 10 chars
`parties`	array
`items`required	array
`total`	number	810 invoice total in USD.
`controlNumber`	string	max 15 chars
`usage`	string	one of: P \| T

Code samples

cURLbash

# 1. Probe the endpoint with no auth — receive 402 with PaymentRequirements
curl -sS -X POST 'https://2s.io/api/edi/generate' \
  -H 'Content-Type: application/json' \
  -d '{"type":"850","senderId":"example","receiverId":"example","senderQualifier":"example","receiverQualifier":"example","documentNumber":"example","poNumber":"example","date":"example","parties":[{"role":"example","name":"example","idQualifier":"example","id":"example"}],"items":[{"quantity":1,"uom":"example","price":1,"productId":"example","idQualifier":"example"}],"total":1,"controlNumber":"example","usage":"P"}'

# 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/edi/generate' \
  -H 'Content-Type: application/json' \
  -H 'PAYMENT-SIGNATURE: <base64-json-payload>' \
  -d '{"type":"850","senderId":"example","receiverId":"example","senderQualifier":"example","receiverQualifier":"example","documentNumber":"example","poNumber":"example","date":"example","parties":[{"role":"example","name":"example","idQualifier":"example","id":"example"}],"items":[{"quantity":1,"uom":"example","price":1,"productId":"example","idQualifier":"example"}],"total":1,"controlNumber":"example","usage":"P"}'

# 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/edi/generate'

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.edi.generate({
  "type": "850",
  "senderId": "example",
  "receiverId": "example",
  "senderQualifier": "example",
  "receiverQualifier": "example",
  "documentNumber": "example",
  "poNumber": "example",
  "date": "example",
  "parties": [
    {
      "role": "example",
      "name": "example",
      "idQualifier": "example",
      "id": "example"
    }
  ],
  "items": [
    {
      "quantity": 1,
      "uom": "example",
      "price": 1,
      "productId": "example",
      "idQualifier": "example"
    }
  ],
  "total": 1,
  "controlNumber": "example",
  "usage": "P"
})

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.edi.generate(type="850", senderId="example", receiverId="example", senderQualifier="example", receiverQualifier="example", documentNumber="example", poNumber="example", date="example", parties=[{"role":"example","name":"example","idQualifier":"example","id":"example"}], items=[{"quantity":1,"uom":"example","price":1,"productId":"example","idQualifier":"example"}], total=1, controlNumber="example", usage="P")

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": "edi.generate",
    "arguments": {
      "type": "850",
      "senderId": "example",
      "receiverId": "example",
      "senderQualifier": "example",
      "receiverQualifier": "example",
      "documentNumber": "example",
      "poNumber": "example",
      "date": "example",
      "parties": [
        {
          "role": "example",
          "name": "example",
          "idQualifier": "example",
          "id": "example"
        }
      ],
      "items": [
        {
          "quantity": 1,
          "uom": "example",
          "price": 1,
          "productId": "example",
          "idQualifier": "example"
        }
      ],
      "total": 1,
      "controlNumber": "example",
      "usage": "P"
    }
  }
}

Response

Field	Type	Description
`ok`	boolean	one of: true
`items`	array
`total`	integer	Total matching rows upstream; null when unknown.
`source`	object
`meta`	object

Example response datajson

{
  "ok": true,
  "items": [
    {
      "type": "example",
      "documentNumber": "example",
      "lineItems": 1
    }
  ],
  "total": 1,
  "source": {
    "provider": "example",
    "url": "example",
    "license": "example"
  },
  "meta": {
    "edi": "example",
    "segmentCount": 1,
    "controlNumber": "example"
  }
}

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.