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8 clients · secrets stay placeholders

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{
  "mcpServers": {
    "mercury402-mcp": {
      "type": "http",
      "url": "https://mcp.mercury402.com/mcp"
    }
  }
}

claude mcp add --transport http mercury402-mcp https://mcp.mercury402.com/mcp

[mcp_servers.mercury402-mcp]
url = "https://mcp.mercury402.com/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mercury402-mcp": {
      "type": "remote",
      "url": "https://mcp.mercury402.com/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "mercury402-mcp": {
      "type": "http",
      "url": "https://mcp.mercury402.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=mercury402-mcp&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLm1lcmN1cnk0MDIuY29tL21jcCJ9"
}

{
  "servers": {
    "mercury402-mcp": {
      "type": "http",
      "url": "https://mcp.mercury402.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "mercury402-mcp": {
      "httpUrl": "https://mcp.mercury402.com/mcp"
    }
  }
}

extensions:
  "mercury402-mcp":
    enabled: true
    name: "mercury402-mcp"
    type: streamable_http
    uri: "https://mcp.mercury402.com/mcp"
    timeout: 300

Quality 86 / 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 hygiene88 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations2 of 2 tools declare readOnlyHint or destructiveHint
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: list_endpoints (destructiveHint, idempotentHint); get_endpoint_data (destructiveHint)
pass
tools.token_costabout 465 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump
pass
tools.hidden_textno hidden text in tool names, descriptions, schemas or annotations

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name
pass
stability.new_linksno tool change named a new site

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvabledeps.dev does not know [email protected]

2 tools, about 465 tokens to load them all · tool set 27ff3cc3bb0b · checked 2026-11-14 07:36 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 97 / 100

provenance90

liveness99

freshness100

hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-99% +updated-19d-ago

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

Dependencies

[email protected] npmthis version is not known to the dependency resolver

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://mcp.mercury402.com/mcp` streamable-http	none	yes	99%	259 ms	2025-11-25	2026-11-14

package	registry	version	runtime	secrets
`mercury402-mcp`	npm	0.1.4	npx	`MERCURY402_PAYER_PRIVATE_KEY`

Tools (2)

get_endpoint_data Call a Mercury402 endpoint on the live API. This hosted endpoint is discovery-only: endpoints return HTTP 402 and this tool returns the price and x402 payment instructions instead of data. Pay with your own x402 client, or run mercury402-mcp locally (npx -y mercury402-mcp) with your own wallet. Use list_endpoints first to find paths and parameters. Path params can be inline ("/v1/fred/UNRATE") or passed in params ("/v1/fred/{series_id}" + {"series_id":"UNRATE"}). Other params go to the query string (GET) or JSON body (POST).

list_endpointsread-only List Mercury402 financial data endpoints (78 total) with path, method, category, description, price in USD (paid per call in USDC on Base via x402) and accepted parameters. Free; makes no network calls.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.dudman1/mercury402-mcp",
  "title": "Mercury402: Treasury/FRED financial data over x402",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mcp.mercury402.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.1.4",
  "packages": [
    {
      "version": "0.1.4",
      "transport": {
        "type": "stdio"
      },
      "identifier": "mercury402-mcp",
      "runtimeHint": "npx",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "environmentVariables": [
        {
          "name": "MERCURY402_PAYER_PRIVATE_KEY",
          "isSecret": true,
          "description": "Opt-in paid mode: private key of a dedicated low-balance wallet holding USDC on Base. Leave unset for free discovery mode."
        },
        {
          "name": "MERCURY402_MAX_PRICE_USD",
          "format": "number",
          "default": "0.5",
          "description": "Per-call spending cap in USD for paid mode."
        }
      ]
    }
  ],
  "repository": {
    "id": "1172993361",
    "url": "https://github.com/dudman1/mercury402",
    "source": "github",
    "subfolder": "mcp-server"
  },
  "websiteUrl": "https://mercury402.com",
  "description": "Treasury/FRED financial data over x402: pay-per-call US yields, macro and forex in USDC on Base"
}