The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the Connskill Growth MCP listing page.
Pay-per-call market data and real-world actions for AI agents, from agent.connskill.com: keyword volume by location, Google SERP snapshots (with AI-overview and PAA blocks), site audits with a real crawl, backlinks, competitors, SMS verification numbers, receive-only inboxes, GDPR-compliant LLM chat hosted in Germany, and a trust check for other x402 sellers.
No account, no API key. Each call is paid in USDC on Base via x402. Free endpoints (quotes, catalogue, status, locations) need no wallet at all.
This repo ships the same capability in three forms, so any agent can buy:
| Form | For | Install |
|---|---|---|
MCP server (index.mjs) | Claude Code, Claude Desktop, Cursor, Codex, OpenClaw, Hermes, anything MCP | npx -y @connskill/mcp-growth-services |
Skill (skills/connskill-growth/) | Claude Code, Codex, OpenClaw, Hermes (agentskills.io format) | copy the folder or install from this repo |
Standalone script (skills/connskill-growth/scripts/x402-call.mjs) | any agent that can run node | node x402-call.mjs POST /v1/keyword-ideas '{"keyword":"..."}' |
Tools are generated live from the service's /openapi.json and /.well-known/x402:
57 endpoints today (34 paid), and new ones appear without a release.
X402_WALLET_KEY, the private key of a Base wallet holding
USDC. x402-fetch signs an EIP-3009 authorization per call; the facilitator pays gas.
Without a key, paid tools return a clear hint instead of spending anything.X402_MAX_USD (default 1.00) caps what any single call may spend.⚠️ The key can spend real USDC. Use a dedicated wallet funded with only what the agent may spend. Never a main wallet.
Or as a plugin with the skill included (asks for the key in its own config, stored in the keychain):
Skill only: copy skills/connskill-growth to ~/.agents/skills/.
mcpServers)Skill: copy skills/connskill-growth into ~/.agents/skills/ (or your workspace skills/)
and set X402_WALLET_KEY under skills.entries.connskill-growth.env in openclaw.json.
Or MCP in ~/.hermes/config.yaml under mcp_servers: with command: npx,
args: [-y, @connskill/mcp-growth-services], env: {X402_WALLET_KEY: ...}.
| Var | Default | Meaning |
|---|---|---|
X402_ORIGIN | https://agent.connskill.com | Base URL of the service |
X402_WALLET_KEY | – | Base private key holding USDC (enables paid calls) |
X402_MAX_USD | 1.00 | Hard cap per paid call, in USD |
/.well-known/x402)| Endpoint | Price (USDC) |
|---|---|
POST /v1/keyword-ideas | 0.03 |
POST /v1/keyword-metrics (up to 1000 keywords) | 0.15 |
POST /v1/keyword-metrics-multi (up to 30 locations, one payment) | 0.15 per location |
POST /v1/serp-report (organic + AI overview, PAA, featured snippet) | 0.10-0.50 |
POST /v1/site-audit (Labs + backlinks + real on-page crawl) | 1.00 |
POST /v1/trust-check (vet an x402 seller: live 402, inflow, self-dealing) | 0.05 |
POST /sms/v1/sms-order (quote first, free) | 0.25-3.00 |
POST /mail/v1/mail-inbox (7-day receive-only inbox) | 0.50 |
POST /ai/v1/eu-chat (GDPR, hosted in Germany, tool use) | 0.10 |
Something missing? POST /v1/wishlist is free and read by humans.
MIT. Built by CONNSKILL GmbH & Co. KG, Traunstein, Germany.