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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "merchant-check": {
      "type": "http",
      "url": "https://mcp.gradientdecisions.com/mcp"
    }
  }
}

claude mcp add --transport http merchant-check https://mcp.gradientdecisions.com/mcp

[mcp_servers.merchant-check]
url = "https://mcp.gradientdecisions.com/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "merchant-check": {
      "type": "remote",
      "url": "https://mcp.gradientdecisions.com/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "merchant-check": {
      "type": "http",
      "url": "https://mcp.gradientdecisions.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=merchant-check&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLmdyYWRpZW50ZGVjaXNpb25zLmNvbS9tY3AifQ%3D%3D"
}

{
  "servers": {
    "merchant-check": {
      "type": "http",
      "url": "https://mcp.gradientdecisions.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "merchant-check": {
      "httpUrl": "https://mcp.gradientdecisions.com/mcp"
    }
  }
}

extensions:
  "merchant-check":
    enabled: true
    name: "merchant-check"
    type: streamable_http
    uri: "https://mcp.gradientdecisions.com/mcp"
    timeout: 300

Quality 76 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene64 · weight 30

pass
tools.descriptionsevery tool has a description
warn
tools.description_length1 tools have descriptions over 1,024 characters, which crowds the context
pass
tools.schemasevery tool has an object input schema
fail
tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: check_merchant (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
pass
tools.token_costabout 594 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

1 tools, about 594 tokens to load them all · tool set a00f580d893f · checked 2026-10-20 01:29 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 89 / 100

provenance75

liveness99

freshness85

hygiene100

+repository +dns-namespace +reachable +uptime-97% ~updated-61d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://mcp.gradientdecisions.com/mcp` streamable-http	none	yes	97%	420 ms	2025-11-25	2026-10-19

Tools (1)

check_merchant Before paying an unfamiliar merchant via x402, including one just discovered through a marketplace like Coinbase's x402 Bazaar, call this for a machine-readable assessment of their observable on-chain payment behavior, on Base or Solana. Returns a `recommendation` (PROCEED / CAUTION / INSUFFICIENT_SIGNAL) a payment policy can branch on directly, plus supporting evidence: trust tier, confidence, payer diversity, transaction history, category (data_api/compute/content_generation/financial_data/storage/other), known platform URL(s), and the merchant's own advertised price(s) compared against category peers, with no caller-supplied price required for that. This is decision support drawn from observed behavior, not a certification. PROCEED means the available evidence doesn't show cause for concern, not a guarantee of safety. INSUFFICIENT_SIGNAL means there isn't enough history to say either way, distinct from an actual concern. Add a specific quoted price to also check that exact figure against comparable sellers. $0.01 USDC per check, paid via x402.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "com.gradientdecisions/merchant-check",
  "title": "x402 Merchant Check",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mcp.gradientdecisions.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0",
  "repository": {
    "url": "https://github.com/clevbot/merchant-check-mcp-",
    "source": "github"
  },
  "description": "Pre-payment merchant trust checks for x402 agents on Base and Solana."
}