All services

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Current block height of the chain tip from chainquery's independent full node. Bitcoin Core getblockcount.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. All known chain tips with height and branch status from chainquery's independent full node. Bitcoin Core getchaintips.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. An unspent transaction output (UTXO) by txid and index from chainquery's independent full node. Bitcoin Core gettxout.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Mempool details for a transaction from chainquery's independent full node: fees, size, ancestor and descendant counts. Bitcoin Core getmempoolentry.

chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Currently banned peer IPs and subnets from chainquery's independent full node. Bitcoin Core listbanned.

Get YOUR x402 endpoint listed in this Bazaar - done for you, $99 one-time. You receive a deploy-ready x402 v2 kit generated for your stack (Next.js, Express, serverless; PHP via a free serverless function) with your wallet, price and discovery declaration baked in, plus a resumable listing_key that drives the automated pipeline via MCP (https://mudko.com/api/mcp): validate against Coinbase's own preflight with per-check fixes, and when your price is $1 or under WE fire the indexing settlement from our funded wallet. Ends with a receipt: settle tx + your live merchant-feed entry. Built by the team that listed its own endpoints first (this very listing is dogfood). Keepalive add-on available so you never fall out of the index.

Get YOUR x402 endpoint listed in this Bazaar - done for you, $99 one-time. You receive a deploy-ready x402 v2 kit generated for your stack (Next.js, Express, serverless; PHP via a free serverless function) with your wallet, price and discovery declaration baked in, plus a resumable listing_key that drives the automated pipeline via MCP (https://mudko.com/api/mcp): validate against Coinbase's own preflight with per-check fixes, and when your price is $1 or under WE fire the indexing settlement from our funded wallet. Ends with a receipt: settle tx + your live merchant-feed entry. Built by the team that listed its own endpoints first (this very listing is dogfood). Keepalive add-on available so you never fall out of the index.

Buy the agent-readiness package for a website: we generate and deliver the full agent-callable surface (agent-card, MCP server-card, agent-skills, WebMCP bridge, OAuth discovery, robots.txt-for-AI, llms.txt, DNS-AID guide). Pay USDC on Base and receive a bundle_key that unlocks the deliverables immediately — no human, no card. Minimum $350; price is value-based per business.

Stay listed in this Bazaar: resources are delisted after ~30 days without a settled payment. $190 prepaid year, agent-payable (the card alternative is $19/mo at mudko.com/pricing): our funded wallet settles a small heartbeat to your endpoint twice a month - the USDC lands in YOUR payTo, so the heartbeat costs you nothing - we watch your merchant-feed entry weekly and alert + resurrect on any delisting. Requires an existing Bazaar Listing Package: pass the listing_key issued by https://mudko.com/api/x402/bazaar-listing.

Full site quality audit: 22 checks across SEO (titles, descriptions, canonical, Open Graph, JSON-LD…), accessibility (alt text, form labels, heading order, landmarks…) and security headers (HSTS, CSP, XCTO…) — scored 0-100 per section with a copy-paste fix for every finding. $5 per audit. Fetch-based (served HTML; SPA shells noted). The agent-readiness scan is separate and free at /api/x402/deep-scan.

Estimate CO2e for fuel burned, electricity used, freight moved or a trip taken, using published US EPA emission factors.

All Alpha Vantage data via a function param, e.g. GLOBAL_QUOTE, TIME_SERIES_DAILY, CURRENCY_EXCHANGE_RATE, DIGITAL_CURRENCY_DAILY.

Status, sponsor, latest action and titles for a bill in a given Congress and chamber.

Follows a shortened link through its redirect chain and returns the final destination with click-tracking parameters removed.

OT/ICS patch feasibility for a CVE. Pass ?id=CVE-XXXX-XXXX. Returns patch availability, OT-safe workarounds, patch complexity per ICS layer, estimated downtime, safe-to-patch-live flag, deployment strategy, and risk-vs-disruption score 1-10.

ICS/OT device exposure lookup. Pass ?vendor=siemens&model=s7-1200. Returns default credential risk, exposed OT protocols (Modbus/502, S7comm/102, DNP3/20000), exploitation notes, and hardening steps. Covers Siemens, Schneider, Rockwell, Honeywell, GE, Unitronics, Beckhoff.

VandaagAI — volledige artikeltekst voor autonome agents (betaling per artikel)

HTTPBin Test Echo - a Sly-published x402 service running on Sly's gateway (api.getsly.ai). Used to validate the publish + gateway flow end-to-end. Powered by Sly (https://getsly.ai). Buyer agents call this URL with x402 payment and get a JSON slideshow back. Sly Treasury account, Demo Fintech tenant, demo/test slug.

ICS threat actors by sector. Pass ?sector=energy. Returns all groups targeting that sector from live MITRE ATT&CK ICS STIX data. Covers energy, water, manufacturing, oil-and-gas, chemical, transportation, nuclear.

ICS threat actor ASN infrastructure profiling. Pass ?asn=AS215540. Returns ICS actor associations (SANDWORM, VOLTZITE, XENOTIME), phishing kit links (Tycoon2FA, EvilProxy, NakedPages), bulletproof hosting indicators, abuse categories (c2, staging, phishing), and an OT-specific blocking recommendation with WAF rule hint. ASN analysis reveals infrastructure clustering that survives IP/domain rotation — critical for OT defenders tracking persistent actor infrastructure.

Did it happen? Check whether a prediction market event has settled on Polymarket or Kalshi and get the resolved outcome, resolution time, source and market URL. A cheap oracle for agents that must verify a real-world outcome before acting.

Hardened headless-browser fetch with full JavaScript/SPA rendering and a realistic browser profile, returning fully rendered Markdown. Best for JavaScript-heavy/SPA pages and light bot checks; not guaranteed against advanced anti-bot walls (e.g. Cloudflare/Akamai).

Real-time perpetual funding rates + mark price for any Binance futures symbol. Essential for delta-neutral and basis-trading agents. Free source, deterministic, instant JSON. $0.01 USDC via x402 on Base. SYNTHORA. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

Agent Card Validator (A2A): given an Agent Card URL or JSON, deterministically validates it against the A2A spec — required fields, skill schemas, endpoint reachability, security schemes, provider transparency — and returns a compatibility_score, schema_errors and warnings. The trust layer for the agent economy. Deterministic, Ed25519-signed. 0.01 USDC via x402 on Base. SYNTHORA.