Get the top trending prediction markets on Polymarket, sorted by 24h volume. Returns up to 5 markets by default.

Extract structured public business contact information from any public business website. Returns company name, emails, phone numbers, social profiles, postal addresses, and contact pages as structured JSON. $0.01 per request via x402 on Base.

Render a PDF. Pass `template` (one of 45 starter slugs: invoice, receipt, contract, certificate, nda, letter, report, quote, purchase-order, lease-agreement, resume, lab-report, boarding-pass, menu, bank-statement, etc.) or `html` (raw Handlebars HTML). Returns application/pdf bytes. $0.006 USDC per render, no API key, no signup. Full catalog: GET /v1/starters (free). Agent docs: https://pdfzen.site/docs/agents/tools

Complete list of all Bitcoin Core RPC methods (summaries). One call replaces up to 142 individual lookups. Returns name, category, summary, and parameter count for every method.

Twilio SMS and messaging send preflight. Validate a Twilio Messages.create payload before sending SMS/MMS or other supported messages. Returns static failures, warnings, and unknowns without sending the message.

Scrapes a URL and returns structured JSON: title, meta tags, headings, paragraphs, links, tables, extracted emails and phone numbers, and word counts. Accepts a single 'url' or a list of 'urls' for batch scraping. Includes retry logic and anti-detection headers.

Resolve ONE DNS record type for a domain -- the cheapest, narrowest domain-check endpoint. For all record types at once, use /domain/intelligence. For a bundled DNS+TLS+headers audit, use /web/audit (raw) or /security/posture (scored). For mail-security plus a scored verdict, use /domain/due-diligence.

Octodamus — AI oracle for crypto and tokenized NYSE markets. BUY/SELL/HOLD signals, Polymarket edges, Fear & Greed, macro regime. Ed25519 signed.

Agent Reliability Network: ARN x402 PayGuard provides x402 payment security for autonomous AI agents. Check the seller before you pay with payment preflight and payment-challenge validation. Returns ALLOW, CAUTION, or BLOCK.

LLM cost scout: send your monthly OpenAI API spend in USD and get back the flat ChatGPT/Codex subscription tier that absorbs it through the ProxyLLM gateway, the exact new monthly total and savings, the live model catalog, and machine-readable signup steps an agent can complete autonomously (email OTP, no browser).

LLM chat completion. $0.01 USDC per call on Base, no API key. POST JSON { prompt } or { messages: [{ role, content }] }; optional model (OpenRouter slug) and max_tokens (default 800, max 2000). Falls back across up to 5 models so one outage does not fail the call. Returns { content, model, usage, latency_ms }.

Live web search results. $0.01 USDC per call on Base, no API key. GET ?q=... (required), count 1-20 (default 10), optional country, language, page. Returns results[{ title, url, description, score }], plus Google's answer box, knowledge graph, people-also-ask, related searches and shopping when the Google-backed provider answers (empty on fallback).

Notarize any public web page or API response: fetches the URL server-side, archives the exact bytes, and returns a tamper-evident ed25519 attestation recording the final URL, UTC timestamp, HTTP status, content type, byte length and sha256 hash. Establishes provenance and a chain of custody for what a source said at a point in time, so the signed record can serve as the evidence layer in a later dispute or audit trail.

Token-by-token Kimchi Premium for 189+ tokens, reverse premium, Upbit-Bithumb gaps, market share

Any URL as clean, LLM-ready content. $0.01 USDC per call on Base, no API key. GET ?url=... (required), format=markdown|text|html (default markdown), max_chars (default 40000, max 120000). Returns { title, description, content, status, truncated, chars, latency_ms }. Non-HTML URLs come back as raw content.

Text embeddings. $0.01 USDC per call on Base, no API key. POST JSON { input: a string or up to 64 strings }. Model jina-embeddings-v3, 1024 dimensions. Returns { embeddings (one vector per input), dimensions, count, usage, latency_ms }.

Daily state of the x402 agent economy: observed USDC inflow, seller ranking, category demand, growth, and coverage. Reports its real observation window; concentration adjustment applied only when scan coverage supports it. A FREE register-wide change digest covering the same domain is market_digest on the x402-observatory gateway; buy this for the derived figures, not for what merely changed.

Deterministic unit conversion reproducing NIST SP 811 exact factors (length, mass, volume, energy, power, pressure, force, area, speed, data, angle, frequency + affine temperature). Every answer signed. Free sample, no payment required: GET /play/unit

BTC and ETH market-cap dominance (% of total crypto market cap), plus total market cap and active-coin count, refreshed every ~5 min. Use to gauge whether capital sits in majors vs alts. For the alt-rotation read specifically, use /alt-season.

IOC enrichment with ICS campaign context. Pass ?value=1.2.3.4&type=ip or type=domain. Queries AlienVault OTX, AbuseIPDB, and DeepSeek CTI for OT campaign association. Returns verdict on whether the IOC is linked to ICS-targeting campaigns.