INDIVIDUAL MCP TOOL

check_paywall

Check whether an address has paid for a specific x402 paywall.

usecoal.xyznone authenticationAvailability not checked

Input schema

{}

Inferred read-only · medium confidence · heuristic, not a guarantee.

No write-capable action terms were found; this is not proof that invocation has no side effects.

CONNECT WITH APPROVAL

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.coal-commerce]
url = "https://mcp.usecoal.xyz/api/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "coal-commerce": {
      "type": "http",
      "url": "https://mcp.usecoal.xyz/api/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: coal-commerce
Remote MCP URL: https://mcp.usecoal.xyz/api/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "coal-commerce": {
      "url": "https://mcp.usecoal.xyz/api/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "coal-commerce": {
      "type": "http",
      "url": "https://mcp.usecoal.xyz/api/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "coal-commerce",
  "transport": "streamable-http",
  "url": "https://mcp.usecoal.xyz/api/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

discover_merchants — THE DEFAULT FIRST CALL whenever the user wants to buy, get, fetch, grab, order, purchase, shop for, find, or browse anything (digital goods, ebooks, APIs, prompts, datasets).
search_products — Search products across all Coal merchants.
get_merchant_profile — Get the full profile of a Coal merchant including products (with images), paywalls, supported networks/tokens, and 0G Storage proof.
query_merchant_memory — Ask a natural language question about a merchant's products, policies, or catalog.
create_checkout — Create a Coal checkout session to pay for a product or amount.
get_checkout_status — Check the payment status of a checkout session: pending, verifying, confirmed, expired, failed.
verify_receipt — Verify a payment receipt and see its 3-step proof trail: (1) Base TX, (2) 0G Storage receipt, (3) 0G Chain anchor.
get_0g_health — Check the live status of all 5 0G components: Storage, Chain, Compute, KV, DA.