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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "preflight402": {
      "type": "http",
      "url": "https://preflight402.ironshell.io/mcp"
    }
  }
}

claude mcp add --transport http preflight402 https://preflight402.ironshell.io/mcp

[mcp_servers.preflight402]
url = "https://preflight402.ironshell.io/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "preflight402": {
      "type": "remote",
      "url": "https://preflight402.ironshell.io/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "preflight402": {
      "type": "http",
      "url": "https://preflight402.ironshell.io/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=preflight402&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vcHJlZmxpZ2h0NDAyLmlyb25zaGVsbC5pby9tY3AifQ%3D%3D"
}

{
  "servers": {
    "preflight402": {
      "type": "http",
      "url": "https://preflight402.ironshell.io/mcp"
    }
  }
}

{
  "mcpServers": {
    "preflight402": {
      "httpUrl": "https://preflight402.ironshell.io/mcp"
    }
  }
}

extensions:
  "preflight402":
    enabled: true
    name: "preflight402"
    type: streamable_http
    uri: "https://preflight402.ironshell.io/mcp"
    timeout: 300

Quality 73 / 100needs work

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: preflight (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
pass
tools.token_costabout 195 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stabilityn/a · weight 15

n/a
stability.changes, stability.rug_pulltool history not recorded yet

dependenciesn/a · weight 15

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

1 tools, about 195 tokens to load them all · checked 2026-10-19 15:15 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 63 / 100

unreachable

provenance85

liveness0

freshness85

hygiene100

+repository +dns-namespace +website -unreachable(12 failures) ~updated-90d-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://preflight402.ironshell.io/mcp` streamable-http	none	no (12 failures)	28%	766 ms	2025-11-25	2026-09-21

Tools (1)

preflight One free call before your agent pays. Probes the URL (no wallet, payment, or auth) and returns a trust-preview.v1 verdict: liveness and latency, TLS validity, the 402 payment handshake with protocol detection (x402 v1/v2, MPP-capable), detected networks/asset/price with a USD estimate, ERC-8004 identity binding with Sybil-filtered reputation for the payee (which can adjust the recommendation), and a proceed / caution / avoid recommendation with human-readable reasons. Paid-tier fields (uptime history, reseller analysis) are present but null on the free tier.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.ironshell/preflight402",
  "title": "preflight402",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://preflight402.ironshell.io/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.1.0",
  "repository": {
    "url": "https://github.com/duskwire/preflight402",
    "source": "github"
  },
  "websiteUrl": "https://preflight402.ironshell.io",
  "description": "Trust verdict for an x402 payment endpoint: health, 402 handshake, price, proceed/caution/avoid."
}