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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "402shield": {
      "type": "http",
      "url": "https://four02shield.onrender.com/mcp"
    }
  }
}

claude mcp add --transport http 402shield https://four02shield.onrender.com/mcp

[mcp_servers.402shield]
url = "https://four02shield.onrender.com/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "402shield": {
      "type": "remote",
      "url": "https://four02shield.onrender.com/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "402shield": {
      "type": "http",
      "url": "https://four02shield.onrender.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=402shield&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vZm91cjAyc2hpZWxkLm9ucmVuZGVyLmNvbS9tY3AifQ%3D%3D"
}

{
  "servers": {
    "402shield": {
      "type": "http",
      "url": "https://four02shield.onrender.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "402shield": {
      "httpUrl": "https://four02shield.onrender.com/mcp"
    }
  }
}

extensions:
  "402shield":
    enabled: true
    name: "402shield"
    type: streamable_http
    uri: "https://four02shield.onrender.com/mcp"
    timeout: 300

Quality 73 / 100needs work

protocol88 · weight 25

pass
protocol.modernsupports 2026-07-28 (server/discover)
pass
protocol.statelessanswers without a session
pass
protocol.transportstreamable HTTP
warn
protocol.list_ttltools/list declares ttlMs 0, so clients re-fetch it on every use

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_payment (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
pass
tools.token_costabout 315 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability50 · weight 15

pass
stability.changes2 tool changes in 30 days
fail
stability.rug_pull1 tools kept their name but changed most of their description in 30 days; review before trusting them

dependenciesn/a · weight 15

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

1 tools, about 315 tokens to load them all · tool set f382653de2e9 · tools last changed 2026-10-08 · checked 2026-10-20 10:03 UTC

Tool changes

2026-10-08preflight_paymentchangeddescription, output schemameaning changed
before
Prepare a paid 402Shield pre-execution safety check. The returned endpoint costs $0.005 USDC via x402 and returns ALLOW, REVIEW, or BLOCK. This MCP adapter does not bypass payment.
after · 29% of words in common
Prepare the exact paid 402Shield request that must be completed before an autonomous payment executes. Submit the returned POST request with an x402-capable client. The paid response is ALLOW, REVIEW, or BLOCK. Execute the intended payment only after ALLOW; REVIEW and BLOCK should stop execution by default. Price: $0.005 USDC.
2026-10-07preflight_paymentchangeddescription
before
Prepare a paid 402Shield pre-execution safety check. The returned endpoint costs $0.05 USDC via x402 and returns ALLOW, REVIEW, or BLOCK. This MCP adapter does not bypass payment.
after · 94% of words in common
Prepare a paid 402Shield pre-execution safety check. The returned endpoint costs $0.005 USDC via x402 and returns ALLOW, REVIEW, or BLOCK. This MCP adapter does not bypass payment.

Full history: list_changes · trend: quality JSON.

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 94 / 100

provenance80

liveness100

freshness100

hygiene100

+repository +namespace-matches-repo +reachable +uptime-100% +updated-13d-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://four02shield.onrender.com/mcp` streamable-http	none	yes	100%	372 ms	2026-07-28	2026-10-20

Tools (1)

preflight_payment Prepare the exact paid 402Shield request that must be completed before an autonomous payment executes. Submit the returned POST request with an x402-capable client. The paid response is ALLOW, REVIEW, or BLOCK. Execute the intended payment only after ALLOW; REVIEW and BLOCK should stop execution by default. Price: $0.005 USDC.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.MitchSingh/402shield",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://four02shield.onrender.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.1.0",
  "repository": {
    "url": "https://github.com/MitchSingh/402shield",
    "source": "github"
  },
  "description": "x402 payment security and pre-execution transaction risk screening for autonomous AI agents."
}