Official UK company registry (Companies House). Two modes: pass query to search companies by name (returns company number, name, status, type, incorporation date, address), or pass companyNumber for the full registry profile — legal name, status, company type, jurisdiction, incorporation/cessation dates, SIC activity codes, registered office address, accounts (next due, last made-up-to), confirmation-statement due date, charges and insolvency flags, previous names, and the officers list (name, role, appointed/resigned dates, nationality, occupation). Free, Open Government Licence (commercial use permitted). The authoritative UK-company KYB lookup — complements business.lei (GLEIF) and business.br-cnpj (Brazil).
/api/business/uk-companiesPAYMENT-SIGNATURE.The uk companies API is a pay-per-call business endpoint built for AI agents and autonomous software. Official UK company registry (Companies House).
There is no signup and no API key. An agent (or any HTTP client) hits the endpoint, receives an x402 "402 Payment Required" challenge, signs a sub-cent USDC payment on Base or Solana, and retries — the data comes back on the paid request. That makes it a drop-in uk companies data source for an agent tool-use loop, an MCP host, or a backend that needs business data on demand without onboarding to yet another vendor portal.
| Name | Type | Description |
|---|---|---|
query | string | min 1 chars · max 120 chars |
companyNumber | string | min 1 chars · max 12 chars |
limit | integer | min 1 · max 50 |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/business/uk-companies?query=example&companyNumber=example&limit=1' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/business/uk-companies?query=example&companyNumber=example&limit=1' \ -H 'PAYMENT-SIGNATURE: <base64-json-payload>' # Or use the canonical runner (handles probe → sign → retry): # EVM_PRIVATE_KEY=0x... node --env-file=.env.local \ # --experimental-strip-types scripts/x402-pay.ts \ # 'https://2s.io/api/business/uk-companies?query=example&companyNumber=example&limit=1'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.business.ukCompanies({
"query": "example",
"companyNumber": "example",
"limit": 1
})
console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)import os
from twosio import TwoS
client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])
result = client.business.uk_companies(query="example", companyNumber="example", limit=1)
print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)// 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": "business.uk-companies",
"arguments": {
"query": "example",
"companyNumber": "example",
"limit": 1
}
}
}| Field | Type | Description |
|---|---|---|
ok | boolean | one of: true |
items | array | |
total | integer | Total matching rows upstream; null when unknown. |
source | object |
{
"ok": true,
"items": [
{
"mode": "profile",
"query": {
"query": "example",
"companyNumber": "example",
"limit": 1
},
"total": 1,
"company": {
"companyNumber": "example",
"name": "example",
"status": "example",
"type": "example",
"jurisdiction": "example",
"dateOfCreation": "example",
"dateOfCessation": "example",
"sicCodes": [
"example"
],
"registeredOfficeAddress": "example",
"accountsNextDue": "example",
"accountsLastMadeUpTo": "example",
"confirmationStatementNextDue": "example",
"hasCharges": false,
"hasInsolvencyHistory": false,
"previousNames": [
"example"
],
"officers": [
{
"name": "example",
"role": "example",
"appointedOn": "example",
"resignedOn": "example",
"nationality": "example",
"occupation": "example"
}
]
},
"results": [
{
"companyNumber": "example",
"name": "example",
"status": "example",
"type": "example",
"dateOfCreation": "example",
"address": "example"
}
],
"source": {
"provider": "example",
"url": "example",
"license": "example"
},
"note": "example"
}
],
"total": 1,
"source": {
"provider": "example",
"url": "example",
"license": "example"
}
}