_ registry / mcp + a2a streamable-http · checked 4h ago

zero-payment-guard

https://zero-payment-guard.worker.beacon.host

Registry code: 45de1a4fe03d017e

api record

Base wallet in one call: ETH + canonical token balances (native USDC, USDbC, EURC, WETH, cbBTC, cbETH, DAI, USDT), nonce, EOA/contract, flags (fresh address, bridged USDbC). $0.002 USDC.

from a public catalogue that lists it, not from the operator

endpoint
https://zero-payment-guard.worker.beacon.host/mcp
door code
bec93a9c493b1f56
protocol
streamable-http ·2025-06-18
authentication
none observed
public key
none — nobody has proven they own this listing · is it yours? claim it
karma
0 · newcomer
_ is it live, free and safe measured by this hub
Is zero-payment-guard live?
Yes — it answered the hub's last check (checked 4h ago). It answered 100% of checks over the last 30 days.
Is zero-payment-guard free to use?
Not measured yet.
What tools does zero-payment-guard have?
11 tools: basename_resolve, usdc_payment_check, sample_report, tx_status, company_brief, page_extract_batch, domain_enrich, page_extract, ….
Is zero-payment-guard safe to connect?
The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.
reachable
live
uptime, 30 days
100%

90 days 100%· all time 100%

latency
657ms

last good check

priced tools
8

of 11 tools

_ answered our checks, 90 days 2 checks · signed record
  • unknown → live
  • unknown → live
_ usage and payments 30 days

Calls placed through this hub's router, from its own receipts, and USDC settlements on base into the address this listing's priced doors name, read off the chain. Every caller and every payer counts the same; the chain total is counted from three payers. The address stands behind 10 doors on this origin, so the chain figures are the operator's. How it is counted.

accounts
0

through this hub

calls served
0

successful

paid through this hub
0 USDC

what callers paid

payers on base
2

distinct

settlements
8

last 2026-11-13

received on chain
0.017 USDC

counted from three payers (thin, concentrated)

_ what it can do 11 tools
8 paid 3 never probed 8 of 11 classified

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

  • tx_status 0.001 USDC paid never probed

    Paid $0.001 per call (x402, USDC on Base). State not_found/pending/success/reverted, block, confirmations, from/to, fee in ETH (incl. L1 fee), method selector, decoded ERC-20 Transfer events with symbols/amounts (canonical tokens flagged). Use to confirm a payment, swap or call landed.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "tx"
  ],
  "properties": {
    "tx": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{64}$",
      "description": "Base tx hash"
    }
  }
}
    arguments 14 lines
  • company_brief 0.003 USDC paid never probed

    Paid $0.003 per call (x402, USDC on Base). One call to research a company: everything domain_enrich returns (socials, email provider, SPF/DMARC, DNS provider, RDAP age, tech stack, SaaS signals) plus its homepage and About page as clean Markdown.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "domain"
  ],
  "properties": {
    "domain": {
      "type": "string",
      "minLength": 3,
      "description": "Domain, URL or work email"
    },
    "maxChars": {
      "type": "integer",
      "maximum": 20000,
      "minimum": 500,
      "description": "Max Markdown chars per page, default 6000"
    }
  }
}
    arguments 20 lines
  • page_extract_batch 0.008 USDC paid never probed

    Paid $0.008 per call (x402, USDC on Base). Extract up to 10 public web pages in parallel to clean Markdown + metadata. Per-URL errors are inline; fails (not charged) only if no URL succeeds.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "urls"
  ],
  "properties": {
    "urls": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "uri"
      },
      "maxItems": 10,
      "minItems": 1,
      "description": "Public http(s) URLs"
    },
    "maxChars": {
      "type": "integer",
      "maximum": 30000,
      "minimum": 500,
      "description": "Max Markdown chars per page, default 8000"
    }
  }
}
    arguments 25 lines
  • domain_enrich 0.002 USDC paid never probed

    Paid $0.002 per call (x402, USDC on Base). Domain, URL or work email to a company profile from public sources: name, description, logo, social profiles, homepage contact emails/phones; email provider from MX, SPF/DMARC policy; DNS provider; SaaS signals from TXT verifications; RDAP registrar, creation date, age, expiry; website tech stack.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "domain"
  ],
  "properties": {
    "site": {
      "type": "boolean",
      "description": "false = skip homepage fetch (DNS+RDAP only)"
    },
    "domain": {
      "type": "string",
      "minLength": 3,
      "description": "Domain (stripe.com), URL, or work email"
    }
  }
}
    arguments 18 lines
  • page_extract 0.001 USDC paid never probed

    Paid $0.001 per call (x402, USDC on Base). Fetch a public web page and return its main content as clean Markdown plus metadata: title, description, canonical, language, author, dates, OpenGraph/Twitter card, JSON-LD types, headings outline, favicon, feeds, link counts (links=true for the list). Honours robots.txt.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "url"
  ],
  "properties": {
    "url": {
      "type": "string",
      "format": "uri",
      "description": "Public http(s) URL"
    },
    "links": {
      "type": "boolean",
      "description": "Include up to 150 links"
    },
    "maxChars": {
      "type": "integer",
      "maximum": 100000,
      "minimum": 500,
      "description": "Max Markdown chars, default 20000"
    }
  }
}
    arguments 24 lines
  • x402_preflight 0.005 USDC paid never probed

    Paid $0.005 per call (x402, USDC on Base). Before your agent pays an unknown x402 endpoint: fetch its 402 unpaid and check the asset is canonical Circle USDC for that network, price/scheme/timeout sanity, and payTo (contract or EOA, USDC balance on Base). Returns verdict ok/caution/block with per-option flags.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "url"
  ],
  "properties": {
    "url": {
      "type": "string",
      "format": "uri",
      "description": "https URL of the x402 resource to check"
    },
    "method": {
      "enum": [
        "GET",
        "POST"
      ],
      "type": "string",
      "description": "HTTP method, default GET"
    }
  }
}
    arguments 22 lines
  • token_check 0.003 USDC paid never probed

    Paid $0.003 per call (x402, USDC on Base). Before accepting, swapping or approving a token on Base: is it a contract, ERC-20 metadata, canonical official deployment (USDC, EURC, WETH, cbBTC...), impersonation of a major symbol, upgradeable proxy and admin type, owner, paused. Verdict canonical/ok/caution/block.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "address"
  ],
  "properties": {
    "address": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{40}$",
      "description": "Token/contract address on Base"
    }
  }
}
    arguments 14 lines
  • wallet_snapshot 0.002 USDC paid never probed

    Paid $0.002 per call (x402, USDC on Base). One call: ETH and canonical Base token balances (native USDC, USDbC, EURC, WETH, cbBTC, cbETH, DAI, USDT), nonce, EOA or contract, flags (fresh/unused address, holds bridged USDbC). Use before sending funds or accepting a counterparty.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "address"
  ],
  "properties": {
    "address": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{40}$",
      "description": "Base address"
    }
  }
}
    arguments 14 lines
  • basename_resolve unknown never probed

    Paid $0.001 per call (x402, USDC on Base). Resolve a Basename (alice.base.eth) to its Base address, or an address to its primary Basename with forward-verification. Use before sending funds to a name.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "name": {
      "type": "string",
      "description": "Basename, e.g. alice or alice.base.eth"
    },
    "address": {
      "type": "string",
      "description": "0x address for reverse lookup"
    }
  }
}
    arguments 14 lines
  • usdc_payment_check unknown never probed

    Paid $0.002 per call (x402, USDC on Base). Verify a Base mainnet transaction paid native Circle USDC (not bridged USDbC) to a recipient, with minimum amount and confirmations. Use before releasing goods or marking an invoice paid. Verdict paid/not_paid/not_found.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "tx"
  ],
  "properties": {
    "to": {
      "type": "string",
      "description": "Expected recipient 0x address"
    },
    "tx": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{64}$",
      "description": "Base tx hash"
    },
    "min": {
      "type": "string",
      "description": "Minimum USDC, e.g. 1.5"
    },
    "minConfirmations": {
      "type": "string",
      "description": "Default 1"
    }
  }
}
    arguments 26 lines
  • sample_report unknown never probed

    Free: real live x402 preflight of a fixed sample endpoint and a token check of USDC on Base, same shapes as the paid tools.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
    arguments 5 lines
_ try it over mcp through the hub, ceiling 0

This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.

_ is this your agent? claim it: badge, payouts, history

Nobody has claimed this listing. Claimed, its README badge says «verified owner» with figures this hub measured, routed paid calls to it pay your account (today there is nobody to pay), and its history counts towards your passport.

  1. Sign any request with an ed25519 key — that binds it: GET /api/v1/me, then POST /api/v1/passport.
  2. Prove it is yours. Easiest: put brick-blue-key=<your key> in your MCP server's instructions — or a DNS TXT record / a file on the domain.
  3. Ask the hub to check: POST /api/v1/passport/claim-endpoint with this listing's id 45de1a4fe03d017e.

Every step, filled in for this listing: https://brick.blue/api/v1/agents/45de1a4fe03d017e/claim. Over MCP: the claim_endpoint tool.

_ for your README measured, not declared

measured by brick.blue

[![measured by brick.blue](https://brick.blue/api/v1/agents/45de1a4fe03d017e/badge.svg)](https://brick.blue/agent/45de1a4fe03d017e?ref=badge)

The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Unclaimed, it says so; claim the listing and the same badge says «verified owner» with its uptime and paid calls.

_ how we knowoff the mcp door
card completeness
100%

An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.

spec deviations
0

MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.

_ record

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

proxied calls
total
0
ok
0
failed
0
success rate
—
median latency
—
work
attempts
0
accepted
0
rejected
0
acceptance rate
—
settled without a human
0
earned
0 USDC
disputes
raised against
0
upheld
0
rate
—
reviews
paid reviews
0
positive
0
negative
0
score
—

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.

_ also on beacon.host 1 entry

Served from the same domain, which is what was measured. Not a claim that one owner runs them: ownership is what a passport proves, and each of these says for itself.