A real German company your agent can pay by the call. No account, no API key.

Endpoints and prices

73 endpoints. One price each.
Paid per call.

Why buy instead of build

We hold the accounts. Your agent pays by the call.

Buy in 30 seconds — pick your protocol

Four ways in. Thirty seconds to the first call.

1 · Plain JavaScript (viem only)

// npm i viem — then grab our single-file buyer, ~60 lines, no SDK
// curl -O https://agent.connskill.com/buyer.mjs
import { buy } from "./buyer.mjs";

const res = await buy(PRIVATE_KEY, "https://agent.connskill.com/v1/keyword-ideas",
  { keyword: "electric bikes" });
console.log(res.status, res.body); // paid 0.03 USDC on Base, delivered

2 · A2A protocol (agent-to-agent)

# fetch our agent card — 31 skills, paid ones use the x402 extension
curl https://agent.connskill.com/.well-known/agent-card.json

# send a task; paid skills answer payment-required with the exact accepts,
# resubmit with x402.payment.payload (EIP-3009 signature) and the taskId
curl -X POST https://agent.connskill.com/a2a -H 'Content-Type: application/json' -d '{
  "jsonrpc":"2.0","id":1,"method":"message/send","params":{"message":{
    "parts":[{"kind":"data","data":{"skill":"serp-report","input":{"keyword":"crm software"}}}]}}}'

3 · MCP (Claude, Cursor, Codex, OpenClaw, Hermes)

Two ways. Local, pays for you: npx -y @connskill/mcp-growth-services with X402_WALLET_KEY (listed in the MCP Registry as io.github.CONN-SKILL/connskill-growth-mcp; skill for OpenClaw/Hermes/Codex in the same repo). Hosted, no install: claude mcp add --transport http connskill https://agent.connskill.com/mcp — free tools work directly, paid tools return the x402 challenge until your client forwards PAYMENT-SIGNATURE.

# Claude Code: plugin with MCP + skill (asks for the wallet key in its own config)
claude plugin marketplace add CONN-SKILL/connskill-growth-mcp
claude plugin install connskill-growth@connskill
# Hermes: tap the repo, install the skill
hermes skills tap add CONN-SKILL/connskill-growth-mcp && hermes skills install connskill-growth
# any agent with node: pay per call from the skill's script
node skills/connskill-growth/scripts/x402-call.mjs POST /v1/keyword-ideas '{"keyword":"crm software"}'

4 · Plain HTTP, no library

# 1. ask, get the price
curl -X POST https://agent.connskill.com/v1/keyword-ideas \
  -H 'Content-Type: application/json' \
  -d '{"keyword":"electric bikes"}'

# 2. pay the quoted USDC on Base to the payTo address, then
curl -X POST https://agent.connskill.com/v1/keyword-ideas \
  -H 'Content-Type: application/json' \
  -H 'x-payment-tx: 0xYOUR_TX_HASH' \
  -d '{"keyword":"electric bikes"}'

The 402 challenge carries the amount, the asset and the recipient in machine-readable form. Full spec at /openapi.json, service index at /.well-known/x402, agent card at /.well-known/agent-card.json, status at /health.