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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "blackwall-x402-guardrail": {
      "type": "http",
      "url": "https://mcp.blackwalltier.com"
    }
  }
}

claude mcp add --transport http blackwall-x402-guardrail https://mcp.blackwalltier.com

[mcp_servers.blackwall-x402-guardrail]
url = "https://mcp.blackwalltier.com"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "blackwall-x402-guardrail": {
      "type": "remote",
      "url": "https://mcp.blackwalltier.com",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "blackwall-x402-guardrail": {
      "type": "http",
      "url": "https://mcp.blackwalltier.com"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=blackwall-x402-guardrail&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLmJsYWNrd2FsbHRpZXIuY29tIn0%3D"
}

{
  "servers": {
    "blackwall-x402-guardrail": {
      "type": "http",
      "url": "https://mcp.blackwalltier.com"
    }
  }
}

{
  "mcpServers": {
    "blackwall-x402-guardrail": {
      "httpUrl": "https://mcp.blackwalltier.com"
    }
  }
}

extensions:
  "blackwall-x402-guardrail":
    enabled: true
    name: "blackwall-x402-guardrail"
    type: streamable_http
    uri: "https://mcp.blackwalltier.com"
    timeout: 300

Quality 79 / 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 hygiene71 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
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: forecast_payment (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
pass
tools.token_costabout 255 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 255 tokens to load them all · tool set 2bd85501df02 · checked 2026-10-21 01:38 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 71 / 100

provenance85

liveness29

freshness85

hygiene100

+repository +dns-namespace +website -unreachable(1 failures) ~updated-56d-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.blackwalltier.com` streamable-http	none	no (1 failures)	98%	183 ms	2025-11-25	2026-10-20

Tools (1)

forecast_payment Pre-signature x402 payment verdict: GO / HOLD / STOP for paying a counterparty, from settlement reputation, price-anomaly (quoted vs the payee's own median), and OFAC sanctions — with a third-party-verifiable Ed25519 signed receipt. Verdict only; never takes custody. Free under $10 at risk; over that, returns an x402 payment challenge.

Schemas: list_tools.

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More from com.blackwalltier

Official server.json

{
  "name": "com.blackwalltier/blackwall-x402-guardrail",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mcp.blackwalltier.com",
      "type": "streamable-http"
    }
  ],
  "version": "0.1.2",
  "repository": {
    "url": "https://github.com/bluetieroperations-create/blackwall-x402-mcp",
    "source": "github"
  },
  "websiteUrl": "https://blackwalltier.com",
  "description": "Keyless hosted MCP: pre-signature x402 payment verdict (GO/HOLD/STOP) with a signed receipt."
}