x402 Agent Payments Tracker MCP server

• Registry nameme.crowdspark.agents/agent-toolsverified in the MCP registry

The registry name sits under crowdspark.me. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-29
• Tools36
• Server calls itselfagent-tools
• Server version1.0.0
• Protocol version2025-06-18

On 2026-10-29 the server answered initialize and tools/list without a sign-in. First answer in 444 ms.

• Its tools do every use case we checked: check whether a paid API works for x402 agent payments; probe a paid API for x402 readiness without paying.
• Checked on 6 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP scoreafter a weeka score needs 7 daily checks: 6 so far
• What an agent can do with it2 of 2 use cases
• Answeredmeasuring6 of the 7 daily checks it takes to print a share
• Median first answer246 ms
• Space in an agent's context≈ 11,053 tokensthe definitions of all its tools (48), which an agent carries on every turn
• Tool definitionsB · 81 of 100
• Typed results0 of 48 toolsdeclared outputSchema: results come typed, read once

• Parameters without a description: in 8 of 48
• Not saying whether it only reads or can destroy: 48 of 48

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• email_check

  Email validation for signup forms, lead lists and CRM cleanup: checks syntax, MX mail servers, disposable or temporary domains, role addresses (info@, sales@) and free providers. Returns a deliverable_guess. No SMTP probe, no data stored…

• email_check_full

  One call email risk check: everything in email_check plus sender domain health (domain age, registrar, SPF, DMARC, website reachable) and a 0-100 risk score with accept/review/reject verdict. Use for fraud screening, lead qualification…

• pdf_to_text

  PDF to text or markdown for RAG, summarizing, search indexing and reading reports, papers, contracts and invoices. Give a PDF URL (max 20 MB); returns text per page. format=text or markdown. Not stored. Price $0.006 USDC per call via…

• document_extract

  One call document parsing for invoices, receipts, statements, forms and scanned pages: PDF or image URL in, full text plus extracted fields out (dates, money amounts, totals/tax/amount due, invoice or order numbers, key: value pairs…

• domain_lookup

  Domain intelligence for due diligence, phishing checks and lead research: registrar, creation and expiry dates (RDAP/WHOIS), A/AAAA/MX/NS/TXT records, SPF, DMARC and HTTPS reachability in one call. Price $0.003 USDC per call via x402…

• image_ocr

  OCR: read all text from a screenshot, photo, receipt, sign, scanned page or chart image at a URL (PNG/JPEG, max 10 MB). Keeps line breaks. Price $0.005 USDC per call via x402. Example output: {"text":"Hello Agent Tools"}

• file_convert

  Format conversion for data pipelines and publishing: CSV to JSON, JSON to CSV, HTML to markdown, markdown to HTML, HTML to plain text. JSON body {from, to, input}. Price $0.003 USDC per call via x402. Example output…

• web_to_markdown

  Read a web page as clean LLM-ready markdown (main content, no nav or scripts) for research, RAG and summarization. Respects robots.txt. Price $0.0015 USDC per call via x402. Example output…

• web_read_full

  One call page reader: clean markdown plus page metadata (title, description, Open Graph, canonical, favicon), outbound links, word count and extracted dates, prices, emails and phones. Use for research agents, price checks and lead…

• url_metadata

  Link preview and unfurl data: title, description, Open Graph image, site name, canonical URL, favicon and final URL after redirects. Price $0.001 USDC per call via x402. Example output…

• timezone_convert

  Timezone conversion for scheduling meetings and deadlines across IANA zones, with DST-correct UTC offsets. time=ISO local time or 'now'. Price $0.001 USDC per call via x402. Example output…

• business_days

  Business day calculator for SLAs, invoice due dates, shipping and legal deadlines: counts working days between two dates, skipping weekends and national public holidays (ISO country code). Price $0.001 USDC per call via x402. Example…

• public_holidays

  Public holiday calendar for 100+ countries by year, for scheduling, payroll and delivery planning. Price $0.001 USDC per call via x402. Example output: {"year":2027,"country":"US","holidays":[{"date":"2027-01-01","name":"New Year's…

• fx_rates

  Currency exchange rates (European Central Bank reference rates) for price conversion, invoicing and travel budgets. Latest or historical by date. Price $0.001 USDC per call via x402. Example output: {"source":"European Central Bank via…

• ip_lookup

  IP address lookup for security triage, log analysis and fraud checks: owning network, allocation range, registry country (RDAP) and reverse DNS. Price $0.003 USDC per call via x402. Example output…

• token_info

  Token contract inspector for Base, Ethereum, Optimism, Arbitrum and Polygon: is it a contract, ERC20/ERC721/ERC1155 detection, name, symbol, decimals, total supply (raw and formatted), owner, and upgradeable-proxy check (EIP-1967, beacon…

• gas_estimate

  Gas estimate and fee quote for Base, Ethereum, Optimism, Arbitrum and Polygon: eth_estimateGas for your transaction (to, from, value, data) or a plain transfer if no 'to', current base fee, slow/standard/fast priority tips from recent…

• x402_endpoint_check

  x402 readiness check for any paid API URL: probes it without paying and reports whether it returns a valid 402, where the requirements are (header or body, v1 or v2), network, asset, price in USD, payTo (with EIP-55 checksum check)…

• x402_seller_audit

  Will my paid API get listed? Audits any x402 endpoint URL: runs the readiness check, flags the 500 character description limit, then checks the Coinbase Bazaar listing, OpenAPI x-payment-info, 402 Index entry, favicon, llms.txt and…

• email_check_batch

  Batch email validation for list cleaning: up to 10 addresses per call, 40% cheaper than 10 single calls. JSON body {emails:[...]}. Each item gets syntax, MX, disposable, role and free-provider checks and a deliverable_guess. Bad items…

• ip_lookup_batch

  Batch IP lookup for log analysis and fraud review: up to 10 IPv4 or IPv6 addresses per call, 40% cheaper than singles. JSON body {ips:[...]}. Each item returns the owning network, range, country (RDAP) and reverse DNS. Bad items return…

• domain_lookup_batch

  Batch domain intelligence for due diligence and lead lists: up to 10 domains per call, 60% cheaper than singles. JSON body {domains:[...]}. Each item returns registrar, dates, DNS, SPF, DMARC and HTTPS reachability. Bad items return…

• url_dossier

  One call dossier on a web page and its host: clean markdown, page metadata, outbound links and extracted fields, plus domain intelligence (registrar, age, DNS, SPF, DMARC) and IP network lookup for the host, with a short trust summary…

• invoice_intake

  Invoice intake for AP agents: PDF or image URL in, one decision-ready JSON out. Extracts text, number, total, dates and vendor contact, then runs an email risk check and domain lookup on the vendor and returns accept, review or reject…

• token_preflight

  Token preflight for agents about to swap, list or pay with a token on Base, Ethereum, Optimism, Arbitrum or Polygon: contract and standard check, name, symbol, supply, proxy and owner flags, a 0-100 structural risk score with reasons…

• ens_resolve

  ENS lookup: name to address (with avatar) or address to primary name, with forward verification. Read live from Ethereum mainnet. Use name=vitalik.eth or address=0x... Use before sending funds to a human readable name. Price $0.002 USDC…

• wallet_balance

  Wallet balance on Base, Ethereum, Optimism, Arbitrum or Polygon: native coin balance with USD value (Chainlink) plus up to 10 ERC20 token balances with symbol and decimals. Pass tokens=0xA,0xB. Read live from public RPC. Use before…

• tx_decode

  Transaction decoder for Base, Ethereum, Optimism, Arbitrum and Polygon: status, from, to, value, gas used, fee in native coin and USD, method name and arguments for common ERC20 calls, ERC20 transfers with symbols and amounts, and…

• business_day_add

  Due-date calculator: add or subtract N business days from a date, skipping weekends and nationwide public holidays for a country (ISO code). Returns the result date and weekday, which holidays were skipped and whether the start day is a…

• fx_convert

  Currency converter for invoices, quotes and budgets: convert an amount from one currency into up to 10 others using European Central Bank rates (latest or a past date). Returns rounded amounts, rate, inverse rate and the 7 day change in…

• url_check

  Link health check: follows redirects hop by hop (max 8) with status and timing, flags loops and https downgrades, then reports final status, content type and size, server, caching and a security-header grade (HSTS, CSP, nosniff, frame…

• package_advisories

  Check a package before installing it: known vulnerabilities for one npm, PyPI, cargo, Go or Maven package version (OSV.dev), fixed-in version, latest version and release date, licence, deprecated flag, and a safe, caution or avoid verdict…

• prompt_injection_check

  Rule-based prompt-injection screen for untrusted text such as scraped web pages, emails and tool output. JSON body {text} (max 50,000 chars). Detects instruction-override phrasing, role-spoofing tags, data-leak links and hidden Unicode in…

• pii_redact

  Scrub text before it goes to a model or a log: JSON body {text, mask} (max 100,000 chars). Finds emails, phones, SSNs, cards (Luhn), IBANs, IPs, MAC addresses, API keys, JWTs, private keys, wallet addresses. mask is label, hash or star…

• federal_register_search

  Search the US Federal Register: final rules, proposed rules, notices and presidential documents with title, agencies, publication date, effective date, comment deadline, docket IDs, abstract and links. Filter by keyword, type, agency slug…

• sec_filings

  Recent SEC EDGAR filings for a US-listed company by ticker or CIK: form type, filing and report dates, 8-K item codes with plain labels, accession number and direct document links. Filter by form (8-K, 10-K, 10-Q, 4, 13F-HR, comma list)…