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x402-payment-safety

R0· no sign-in

Authorize x402 payments before signing with request-bound, signed safety decisions.

v2.7.2 · active · repository · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality91strong
Trust97of 100
Uptime, 30 days100%
Latency p50349 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "x402-payment-safety": {
      "type": "http",
      "url": "https://agent-guild-5d5r.onrender.com/mcp/payment-safety/"
    }
  }
}
claude mcp add --transport http x402-payment-safety https://agent-guild-5d5r.onrender.com/mcp/payment-safety/
[mcp_servers.x402-payment-safety]
url = "https://agent-guild-5d5r.onrender.com/mcp/payment-safety/"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "x402-payment-safety": {
      "type": "remote",
      "url": "https://agent-guild-5d5r.onrender.com/mcp/payment-safety/",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "x402-payment-safety": {
      "type": "http",
      "url": "https://agent-guild-5d5r.onrender.com/mcp/payment-safety/"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=x402-payment-safety&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYWdlbnQtZ3VpbGQtNWQ1ci5vbnJlbmRlci5jb20vbWNwL3BheW1lbnQtc2FmZXR5LyJ9"
}
{
  "servers": {
    "x402-payment-safety": {
      "type": "http",
      "url": "https://agent-guild-5d5r.onrender.com/mcp/payment-safety/"
    }
  }
}
{
  "mcpServers": {
    "x402-payment-safety": {
      "httpUrl": "https://agent-guild-5d5r.onrender.com/mcp/payment-safety/"
    }
  }
}
extensions:
  "x402-payment-safety":
    enabled: true
    name: "x402-payment-safety"
    type: streamable_http
    uri: "https://agent-guild-5d5r.onrender.com/mcp/payment-safety/"
    timeout: 300

Quality 91 / 100strong

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 hygiene100 · 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.annotations1 of 1 tools declare readOnlyHint or destructiveHint
  • pass
    tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
  • pass
    tools.token_costabout 529 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 529 tokens to load them all · tool set 8646c7b75cc5 · checked 2026-10-20 13:17 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
liveness100
freshness100
hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-100% +updated-1d-ago

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

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://agent-guild-5d5r.onrender.com/mcp/payment-safety/ streamable-httpnoneyes100%349 ms2025-11-252026-10-20

Tools (1)

guild_x402_payment_safetyPAID. Call this immediately BEFORE signing an x402 payment envelope. Returns one short-lived, Guild-signed AGPD-1 allow/block credential bound to the exact target payment: scheme, CAIP-2 network, asset contract, atomic amount, payee and resource URL, plus optional capability and policy thresholds. Verify it offline with POST /wallet-binding/decision/verify. This is the native MCP transport for the existing HTTP POST /wallet-binding/decision product. An unpaid call returns a complete x402 v2 challenge for the exact request digest. Retry with the official ``_meta['x402/payment']`` carrier; adapters that cannot set request metadata may pass the identical signed PaymentPayload as ``x402_payment``. Conflicting carriers fail closed before facilitator verification or settlement. The decision is issued before metering, so malformed inputs or signing failures are never charged. ``api_key`` uses sandbox credits and is never external revenue. The free identity-only alternative is GET /wallet-binding/resolve.

Schemas: list_tools.

Also listed as

1 other active names share this repository: io.github.AgentTanuki/agent-guild

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More from io.github.AgentTanuki

Official server.json
{
  "name": "io.github.AgentTanuki/x402-payment-safety",
  "_meta": {
    "io.modelcontextprotocol.registry/publisher-provided": {
      "ai.agent-guild/x402-payment-safety": {
        "tool": "guild_x402_payment_safety",
        "verify": "https://agent-guild-5d5r.onrender.com/wallet-binding/decision/verify",
        "network": "Base mainnet (eip155:8453)",
        "price_note": "Current price is returned by the live catalog.",
        "free_resolve": "https://agent-guild-5d5r.onrender.com/wallet-binding/resolve?address={payee}&network=eip155:8453",
        "live_catalog": "https://agent-guild-5d5r.onrender.com/.well-known/agent-guild.json?src=paid_offer:registry",
        "payment_protocol": "x402",
        "authorization_moment": "immediately before signing"
      }
    }
  },
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://agent-guild-5d5r.onrender.com/mcp/payment-safety/",
      "type": "streamable-http"
    }
  ],
  "version": "2.7.2",
  "repository": {
    "url": "https://github.com/AgentTanuki/agent-guild",
    "source": "github"
  },
  "websiteUrl": "https://agent-guild-5d5r.onrender.com/.well-known/mcp/payment-safety-server-card.json",
  "description": "Authorize x402 payments before signing with request-bound, signed safety decisions."
}