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ZERO Payment Guard

by host.beacon.worker.zero-payment-guard
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Server Details

Base wallet snapshot, tx status, payment & token checks, company enrichment, web to Markdown; x402.

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Status
Healthy
Uptime
100.0% over the last 24 hours
Last Tested
Transport
Streamable HTTP · MCP 2025-11-25
URL
Repository
qweewqqwe221/zero-payment-guard
GitHub Stars
0
Server Listing
ZERO Payment Guard
ChatGPT
–
Claude
–

TDQS

A3.9/5.0

Scored across 11 tools

Disambiguation4/5

Most tools target a distinct resource+action (wallet_snapshot, token_check, basename_resolve, page_extract), and descriptions explicitly differentiate the risky pairs. The main overlaps are company_brief vs domain_enrich (company_brief is declared a superset of domain_enrich at a higher price) and tx_status vs usdc_payment_check (both confirm a payment landed, one generically, one as a paid/not_paid verdict). Descriptions resolve these, but an agent still has to reason about price-vs-depth tradeoffs.

Naming Consistency4/5

All names are lowercase snake_case with a resource-first structure (page_extract, token_check, wallet_snapshot, usdc_payment_check), with no camelCase or style mixing. The only inconsistency is verb position: some are noun_verb (basename_resolve, domain_enrich) and some noun_noun (tx_status, sample_report), so there is no single predictable pattern, though it reads cleanly.

Tool Count4/5

Eleven tools is a healthy, well-within-range count and each tool has a defensible job. The caveat is scope: four of them (domain_enrich, company_brief, page_extract, page_extract_batch) are web-research tools in a server branded 'Payment Guard', so the count is right but the set spans two domains.

Completeness4/5

The payment-guard surface is well covered: preflight an endpoint, screen a token, snapshot a wallet, resolve a name, confirm a tx, and verify a USDC payment with a verdict. Gaps are minor: no ERC-20 allowance/approval query despite token_check mentioning approvals, no batch/parallel wallet or tx checks, and everything is Base-only despite x402 tooling referencing arbitrary networks.

Available Tools

11 tools
basename_resolveBasename resolve (forward/reverse) ($0.001 USDC on Base via x402)A
Read-onlyIdempotent
Inspect

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.

Inputs: name, address.

company_briefCompany brief (enrichment + homepage/About Markdown) ($0.003 USDC on Base via x402)A
Read-onlyIdempotent
Inspect

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.

Inputs: domain (required), maxChars.

domain_enrichCompany/domain enrichment ($0.002 USDC on Base via x402)A
Read-onlyIdempotent
Inspect

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.

Inputs: domain (required), site.

page_extractWeb page to Markdown + metadata ($0.001 USDC on Base via x402)A
Read-onlyIdempotent
Inspect

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.

Inputs: url (required), links, maxChars.

page_extract_batchBatch page extract (up to 10 URLs) ($0.008 USDC on Base via x402)A
Read-onlyIdempotent
Inspect

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.

Inputs: urls (required), maxChars.

sample_reportFree sample (live preflight + token check)A
Read-onlyIdempotent
Inspect

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

Inputs: no named parameters.

token_checkBase token safety check ($0.003 USDC on Base via x402)A
Read-onlyIdempotent
Inspect

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.

Inputs: address (required).

tx_statusBase transaction status ($0.001 USDC on Base via x402)A
Read-onlyIdempotent
Inspect

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.

Inputs: tx (required).

usdc_payment_checkBase USDC payment verification ($0.002 USDC on Base via x402)A
Read-onlyIdempotent
Inspect

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.

Inputs: tx (required), to, min, minConfirmations.

wallet_snapshotBase wallet snapshot ($0.002 USDC on Base via x402)A
Read-onlyIdempotent
Inspect

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.

Inputs: address (required).

x402_preflightx402 payment preflight ($0.005 USDC on Base via x402)A
Read-onlyIdempotent
Inspect

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.

Inputs: url (required), method.

Tool Schema Changelog

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