mcp-registry/com.gradientdecisions/merchant-check · v0.1.0
Also listed as glama/clevbot/merchant-check-mcp
As of 2026-10-21 05:36 UTC, the Gradientdecisions Merchant Check MCP server is up with a Glimind reliability score of 100/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks.
Pre-payment merchant trust checks for x402 agents on Base and Solana.
Claude Code
claude mcp add --transport http gradientdecisions-merchant-check-mcp-ser https://mcp.gradientdecisions.com/mcp
Claude Desktop · Windsurf · Cline (mcpServers JSON)
{
"mcpServers": {
"gradientdecisions-merchant-check-mcp-ser": {
"type": "http",
"url": "https://mcp.gradientdecisions.com/mcp"
}
}
}
Third-party server, listed as discovered. Review its source before installing.
1 of 1 tool(s) carry no readOnlyHint/destructiveHint annotations.
Annotate read-only tools with {"readOnlyHint": true}. Agents and gateways can then run them without a confirmation prompt, and route around destructive ones. How to fix →
No tool declares an outputSchema.
Declare outputSchema and return structuredContent (MCP 2025-06-18+). Agents can then parse results without guessing, and chain tools reliably. How to fix →
Paste-ready definitions with the problems above fixed. Changes marked verify need a human look. All of them as JSON: /v1/readiness/mcp-registry%2Fcom.gradientdecisions%2Fmerchant-check/fixes
{
"name": "check_merchant",
"description": "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/sto",
"inputSchema": {
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"merchant_wallet_address"
],
"properties": {
"asset": {
"type": "string",
"description": "Optional. Payment asset/token from the 402 response's accepts[].asset. Not required to score."
},
"price": {
"type": "number",
"description": "Quoted price in USD-equivalent, if checking fairness"
},
"amount": {
"type": "string",
"description": "Optional. Atomic payment amount from the 402 response's accepts[].amount, if preferred over `price`. Not required to score."
},
"network": {
"type": "string",
"description": "Optional. CAIP-2 network id from the 402 response's accepts[].network (e.g. \"eip155:8453\"), if already on hand. Not required to score."
},
"service_url": {
"type": "string",
"description": "Optional. The resource/service URL the agent was trying to reach. Not required to score."
},
"resource_type": {
"type": "string",
"description": "Deprecated, accepted but unused. Price-fairness now compares against the merchant's own on-chain-derived category automatically, no need to supply this."
},
"merchant_wallet_address": {
"type": "string",
"description": "Merchant's receiving wallet address: a Base (0x...) or Solana (base58) address. Usually extractable directly from a 402 Payment Required response's accepts[].payTo."
}
},
"additionalProperties": false
},
"annotations": {
"readOnlyHint": true
}
}Get an email or webhook when this server's readiness drops by 10+ points, tool-poisoning text appears, or a tool breaks:
curl -X POST https://glimind.com/v1/subscriptions -H 'content-type: application/json' -d '{"tools":["mcp-registry/com.gradientdecisions/merchant-check"],"email":"[email protected]"}'Agents: watch_tool({"toolId": "mcp-registry/com.gradientdecisions/merchant-check"}) over MCP.
check_merchant ~515 tokensStatic checks of the advertised tools/list (schema, descriptions, annotations, tool-poisoning patterns, names, size) plus observed protocol, uptime, latency and contract changes. Read-only: no tool is ever called. Weights: schema 15, docs 20, safety 15, efficiency 15, compatibility 15, protocol 5, reliability 10, stability 5. Token counts are estimates (~3.6 characters per token).
Operator? Fix these, then re-check live. Embed the readiness badge:
[](https://glimind.com/server/mcp-registry%2Fcom.gradientdecisions%2Fmerchant-check?ref=badge)
<a href="https://glimind.com/server/mcp-registry%2Fcom.gradientdecisions%2Fmerchant-check?ref=badge"><img src="https://glimind.com/v1/readiness/badge/mcp-registry%2Fcom.gradientdecisions%2Fmerchant-check.svg" alt="MCP agent-readiness"></a>
.. image:: https://glimind.com/v1/readiness/badge/mcp-registry%2Fcom.gradientdecisions%2Fmerchant-check.svg :target: https://glimind.com/server/mcp-registry%2Fcom.gradientdecisions%2Fmerchant-check?ref=badge :alt: MCP agent-readiness
Glimind records every version of this server's tool definitions in a signed, append-only transparency log. Current manifest sha256:fd9a8e17a1956370…, first seen 2026-10-17, included at leaf 226 of 37,416. Version history · verify what your client received.
Compare: most reliable finance servers
Glimind tells agents whether a server is up right now and how to call it, then fails over to a live alternative when it isn't.
Claude Code
claude mcp add --transport http glimind https://glimind.com/mcp
Claude Desktop · Windsurf · Cline (mcpServers JSON)
{
"mcpServers": {
"glimind": {
"type": "http",
"url": "https://glimind.com/mcp"
}
}
}
As of 2026-10-21 05:36 UTC, the Gradientdecisions Merchant Check MCP server is up with a Glimind reliability score of 100/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks.
Gradientdecisions Merchant Check MCP server advertises 1 tool, including check_merchant.
Point your MCP client at this streamable-http endpoint: https://mcp.gradientdecisions.com/mcp
Glimind scanned all 1 tool definitions for tool-poisoning patterns — hidden or invisible characters, instructions that override the model, concealment from the user, requests to read credential or MCP config files, conversation exfiltration and cross-tool shadowing — and found none. This checks what the server tells the model, not what its code does; review the source before granting access to sensitive data.
Status page: 90-day uptime, every outage and how long it lasted.
Claim this listing to get the Verified operator marker, a remediation checklist and owner analytics, or embed the live badge from any of the tool pages above. Maintainers: alerts, deploy attestation and monthly reports.
Status is an automated estimate from Glimind's liveness checks (handshake and tool listing only; no tool is ever called) and may lag or differ from your network. Glimind is not affiliated with this server or its operator. Operator? Request a correction or opt out at https://glimind.com/opt-out.