Connskill Growth MCP

@connskill/mcp-growth-services

Start with Keyword Metrics for Google Ads search volume, CPC, advertising competition and available monthly history. Add AI Search Volume only when modeled question-demand signals help your decision. These are two separate paid results, not an automatic bundle. AI demand includes signals such as Google People Also Ask; it is not measured ChatGPT or Perplexity usage. Advertising competition is not organic SEO difficulty.

Start keyword research · Deutscher Einstieg · Worked guide

One bounded keyword task

1. Choose 1–10 terms and resolve the country/language with the free catalogue.
2. Read current prices and input limits. Approve each tool and a total budget.
3. Call only the approved tool, using the same terms and market for a comparison:

{"keywords":["seo api","keyword research"],"location_code":2276,"language_code":"de"}

Example instruction for your MCP client (preparation only):

Prepare Keyword Metrics for these two terms in Germany, in German. Explain

the current price and output fields. Offer AI Search Volume as a separate,

optional modeled signal. Do not buy either result until I approve the tools

and total budget. Preserve missing data as unknown and do not retry payment

after an unclear result.

A free recipe or this prompt does not authorize payment. Keep X402_MAX_USD=0 and omit the wallet for preparation. The cap is per call, not a combined budget. No ranking or revenue guarantee; check partial and unavailable results.

Other catalogue services include site audits, backlinks, SMS verification, receive-only inboxes, LLM chat hosted in Germany and x402 seller checks.

No account, no API key. Paid calls use USDC on Base via x402. Free endpoints (quotes, catalogue, status, locations) need no wallet at all.

Source and published package

Version 0.3.3 gives generic tool names a clear prefix and removes the duplicated "(free)" from tool descriptions. Renamed tools: jobs/jobs_get, claim, deliver, close are now board_jobs/board_jobs_get, board_claim, board_deliver, board_close; site, site_renew, site_stats are now analytics_site, analytics_site_renew, analytics_site_stats; prose is conformance_prose, status_json is service_status, exchange is agent_exchange. Endpoints, prices and payment behaviour are unchanged; clients that call these tools by name need the new names. Version 0.3.2 adds the keyword-first guide and optional discovery-channel measurement. Version 0.3.1 updated the MCP SDK and vulnerable transitive dependencies. The payment protocol and spending guards are unchanged from 0.3.0, which introduced the v2 payment client and persistent purchase guards described below. Earlier 0.2.1 installations use a different payment client; do not assume these safeguards for that version. Check npm latest and the official MCP Registry before installing. An unversioned npx command selects npm's published release, not necessarily the current GitHub source. Use the source setup for this checked-in version. GitHub, npm, Registry and Glama are separate release channels.

This repo provides three entry points:

Tools are generated from the service's current OpenAPI catalogue and x402 prices when the MCP process first reads its catalogue. The available tool set follows those documents; endpoints marked for exclusion and wallet-signature operations are kept out of this adapter. Restart the MCP process to load an updated catalogue.

Your first purchase: prepare, then enable payment

Start without a wallet and with payment disabled. For an MCP client that accepts mcpServers, use this pinned configuration (Node.js 22 or newer):

{

"mcpServers": { "connskill-growth": { "command": "npx", "args": ["-y", "@connskill/mcp-growth-services@0.3.3"], "env": { "X402_MAX_USD": "0", "X402_DISCOVERY_SOURCE": "github" } } } }

1. Inspect the free catalogue, inputs and current quote. HTTP 402 is a price offer, not a payment or an error to fix by retrying.
2. Approve the exact tool, inputs and price. Configure X402_WALLET_KEY only through your MCP client's secure local configuration, using a dedicated wallet with USDC on Base Mainnet. Never paste a key or seed into a chat.
3. Change X402_MAX_USD from 0 to the approved per-call amount, then restart the MCP process so it reads the new configuration. A configured wallet alone does not approve a purchase. Start with one keyword_metrics call. Optional ai_search_volume is a separate purchase, not part of that approval.
4. Save the result and purchase reference. For an unclear payment or missing result, use wallet support; do not pay again. Return the cap to 0 and restart for later preparation-only sessions.

The cap is per call, not a total budget or a one-call counter. Your client must also enforce your approved scope. Client/network costs may be additional. Hosted MCP can inspect free tools, but it does not supply a wallet or automatically turn every MCP client into an x402 payment client. Use this local adapter for its supported automatic payment flow.

Payment model

The following describes version 0.3.3 and does not apply to earlier 0.2.1 installations.

• Free endpoints work with no wallet.
• Paid endpoints need X402_WALLET_KEY, the private key of a Base wallet holding USDC. The official x402 v2 packages sign an EIP-3009 authorization for the chosen request. The client permits Base mainnet, official USDC and the configured merchant only. It checks the complete resource URL and refuses redirects. Without a key, paid MCP tools return a clear hint instead of sending a purchase.
• `X402_MAX_USD` (default 1.00) is an exact USDC decimal with up to six fractional digits. Empty, negative, scientific and hexadecimal values are rejected. 0 disables payment. This is a per-call authorization limit, not a daily budget.
• Requests have a bounded duration and bounded JSON request/response sizes. A signed request is sent at most once. A timeout after dispatch is an unknown outcome, not proof that the merchant rejected payment.
• An accepted background job (202) is recorded as accepted, with its purchase and authenticated status URLs. It is not reported as a delivered result.
• Payment attempts are persisted before dispatch. Repeating the same canonical request does not create another payment by default. An intentional new purchase of an already delivered request requires MCP argument confirmNewPurchase: true or CLI flag --new-purchase. Neither option overrides an accepted or unclear purchase.
• Keep the private state directory and its parent together. The parent contains a bootstrap marker that detects a missing store. Damaged or incomplete state blocks payment; it is never silently reset. A completely lost parent and marker cannot be distinguished from first use by a new process. Do not delete them to retry a purchase. Separate clients or containers must share the same persistent state to share this guard.

MCP responses include payment state in _meta["io.connskill/payment"]; uncertain outcomes also contain the purchase reference and doNotPayAgain in the text result. No authorization signature or private key is saved in the attempt store. This client uses the purchase reference for support; it does not automatically replay a payment header or sign a replacement to recover a response.

⚠️ The key can spend real USDC. Use a dedicated wallet funded with only what the agent may spend. Never a main wallet.

Install

The 0.3.3 source requires Node.js 22 or newer. The lockfile includes runtime dependencies that require Node 22. The npx examples below select the published npm release; verify its version first. To run the checked-in source, use node and the absolute path to its index.mjs after the source setup. Free discovery needs no wallet.

Claude Code

claude mcp add connskill-growth -s user -e X402_WALLET_KEY=0x... -e X402_MAX_USD=0.50 -- npx -y @connskill/mcp-growth-services

Or install the GitHub plugin with its skill (a separate source route from npm; configure wallet credentials through your client):

claude plugin marketplace add CONN-SKILL/connskill-growth-mcp

claude plugin install connskill-growth@connskill

Codex

codex mcp add connskill-growth --env X402_WALLET_KEY=0x... --env X402_MAX_USD=0.50 -- npx -y @connskill/mcp-growth-services

Skill only: copy the complete skills/connskill-growth folder to ~/.agents/skills/. Its scripts share local modules; copying only x402-call.mjs is insufficient.

Cursor / Claude Desktop (mcpServers)

{

"mcpServers": { "connskill-growth": { "command": "npx", "args": ["-y", "@connskill/mcp-growth-services"], "env": { "X402_WALLET_KEY": "0x...", "X402_MAX_USD": "0.50" } } } }

OpenClaw

openclaw mcp add connskill-growth --command npx --arg -y --arg @connskill/mcp-growth-services

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.

Hermes (NousResearch hermes-agent)

hermes skills tap add CONN-SKILL/connskill-growth-mcp

hermes skills install connskill-growth

Or MCP in ~/.hermes/config.yaml under mcp_servers: with command: npx, args: [-y, @connskill/mcp-growth-services], env: {X402_WALLET_KEY: ...}.

From source

git clone https://github.com/CONN-SKILL/connskill-growth-mcp

cd connskill-growth-mcp npm ci node index.mjs # MCP over stdio node test-smoke.mjs # lists tools, calls a free endpoint, checks the paid guard (never spends)

Container from source

Build from this directory using the checked-in lockfile and pinned official Node image:

docker build --tag connskill-growth-mcp:local .

docker run --rm -i connskill-growth-mcp:local

The container runs as the unprivileged node user and communicates over STDIO. Keep stdin open (-i); no port is exposed. Free endpoints work without a wallet. For paid use, keep the parent directory in a named v