Get started - ScreenCrafter

Agents do not create accounts. You sign up once, paste the key, then the agent works. Open app.screencrafter.io/signup.

Copy the API key on the success screen. It is not shown again (prefix only after that).
Welcome mail from noreply@screencrafter.io is the backup (Your ScreenCrafter API Key).
Lost key: sign in. Login mints a new one. GET /api/v1/keys returns prefix only.
Studio / Cursor signup grants 25 credits. Cookie-less curl signup can show 0. That is not this path.

Header everywhere: X-API-Key: sc_live_…

2. Connect MCP

Cursor ~/.cursor/mcp.json (or project .cursor/mcp.json):

{
  "mcpServers": {
    "screencrafter": {
      "url": "https://api.screencrafter.io/api/v1/mcp",
      "headers": {
        "X-API-Key": "sc_live_YOUR_KEY"
      }
    }
  }
}

Handshake: JSON-RPC initialize protocol 2025-03-26, then tools/list. Other clients: MCP. Check the grant:

MCP tool credits (free), or
GET https://api.screencrafter.io/api/v1/credits/balance

3. First job (uses the 25)

Instant Post from a URL:

{
  "jsonrpc": "2.0",
  "id": 10,
  "method": "tools/call",
  "params": {
    "name": "instant_post",
    "arguments": { "url": "https://screencrafter.io" }
  }
}

Poll with action: "poll" and job_id until status is completed. Open https://app.screencrafter.io/result/{job_id}. Zip is on demand (action: "zip"), not built at complete. Or a screenshot:

{
  "jsonrpc": "2.0",
  "id": 11,
  "method": "tools/call",
  "params": {
    "name": "take_screenshot",
    "arguments": { "url": "https://screencrafter.io" }
  }
}

take_screenshot is sync. Instant Post submit is async. Typical spend is 2 credits per billable call.

4. When credits run out

MCP returns a tool error (402). It does not return a Stripe URL. Buy a pack over REST, confirm balance, retry the same tool. Full steps: Credits.

​1. Sign up

​2. Connect MCP

​3. First job (uses the 25)

​4. When credits run out

1. Sign up

2. Connect MCP

3. First job (uses the 25)

4. When credits run out