x402 Content API

Content-to-context toolkit for AI agents, live on Base mainnet. Seventeen deterministic pay-per-call tools: HTML to markdown (~80-85% token reduction), PDF to markdown, OCR for scanned PDFs (25 and 100-page tiers), structured JSON extraction, RAG chunking, sentence embeddings, cross-encoder reranking, URL fetch-and-clean, JSON/YAML/CSV/XML conversion, QR generation, image ops, object detection, ECB FX rates, phone validation, EVM tx decoding, and OFAC sanctions screening. $0.001-$0.03 USDC per call, settled via CDP. MCP server: npx -y busker-mcp. Machine-readable discovery at /.well-known/x402, /.well-known/agent.json, /openapi.json and /llms.txt.

Wordlist-based profanity/explicit-content detection with basic obfuscation handling (leetspeak, repeated letters). Returns a flag, matched terms, and a redacted version.

A 21,000,000-tile shared pixel canvas on Base. Humans paint free; AI agents pay $0.005 per tile in USDC over x402 (v1 and v2), settled straight to the plot owner. Single-tile and batch painting, free reads of any region, OpenAPI, llms.txt, an agent-skills index and an MCP server.

Penny Press is a pseudonymous essay publication by Scribed. Free for humans to read; AI agents pay pennies in USDC on Base via the x402 protocol per piece. Fragments $0.01, ensembles $0.02, prose $0.05.

Embeddable Logo Showcase and Video Showcase widgets for any website (YouTube, Vimeo, Twitch and TikTok), unlimited views, one snippet. An agent buys a plan term with x402 (USDC on Base or Solana, XRP, HBAR) at the card price: POST /api/v1/plan answers 402, the paid retry grants the term and returns the API key for a new email. The API then builds, publishes and counts widgets. OpenAPI at /openapi.json, manifest at /.well-known/x402.

Pay-per-answer NFL fantasy football analysis for AI agents and people. Ten x402-gated endpoints at $0.10–$0.50 USDC on Algorand mainnet (GoPlausible facilitator): trending adds/drops, weekly sleepers, waiver targets, a weekly report, a 200-player draft board, player start/sit, matchups, roster audits, league-aware team reports and draft grades. Payment settles only after the answer succeeds; every verdict sold is scored publicly against actual points. MCP server included; no API keys or signup.

Dont Die sells page-copy work over x402: hero rewrites, CTA and pricing audits, empty-state copy, about rewrites, first-week emails, competitor price tables, and landing teardowns. Official USDC on Base only.

Four clerical jobs an AI agent cannot do for itself, sold per call with no signup, no API key, and no account. POST /v1/domain ($0.005) returns RDAP registration, live DNS, the TLS certificate as served, and what the HTTP front door does, each part best effort with an errors map. POST /v1/translate ($0.01) translates a short text between languages. POST /v1/convert ($0.01) converts between HTML, Markdown, plain text, PDF, and a fetched URL. POST /v1/render ($0.02) renders a URL or inline HTML to PDF or PNG and returns the bytes. Every product is synchronous and stateless: no ids, no stored secrets, nothing to poll or cancel, and a retry is simply a new purchase. Operated by Vima Brosta LLC.

A catalog of 3,790 original photographs sold one file at a time over HTTP 402. GET /original?id=<12 hex id> answers 402 with an x402 v2 challenge (exact scheme, USDC on Base, eip155:8453, settled by a self-hosted facilitator); pay and the response body is the full-resolution JPEG, with a redelivery token for interrupted downloads. Prices are fixed per photograph at $0.10, $0.50 or $2.00. Free 800 px previews and 320 px thumbnails, a paged JSON catalog at /index.json, plus llms.txt, OpenAPI 3.1 and /.well-known/x402 so an agent can find and buy a file without a human. Every 402 carries an extensions.bazaar input schema for the id parameter. Previews are reserved from training; the originals come with a per-file license for ML training, fine-tuning and evaluation. Contact [email protected].

Web page to clean Markdown plus fixed-schema JSON (article metadata, product/price, tables) for AI agents. robots.txt respected; failed fetches are not charged.

Skim is the x402-native clean reader for AI agents: send a URL, get back agent-ready markdown plus structured metadata in milliseconds. Pay per call in USDC over HTTP 402 - no signup, no API keys. In a production benchmark - 15 real paid calls to skim402.com over the public internet, each verifiable on-chain - Skim ran 2.3x faster than Firecrawl at the median. Its clean output also runs about 4x smaller than raw HTML, because it strips the ads, newsletter popups, and navigation your agent doesn't need. Endpoints for single reads, JS-rendered pages, batch reads, and structured extraction.

49 signed AOP offers (courses, eBooks, products by Lawrence Lanoff / The Naked Press), each x402-buyable in USDC on Base mainnet. Catalog: https://index.adagencyforagents.com/v0/offers. Purchase pattern: https://api.tantra-authority.com/api/x402/{id}.

Marketplace for paid access to private git repositories and agent skills over x402. One USDC payment on Base buys a signed download of a security-scanned release zip; versions you own re-fetch free, forever. Every listing has a free manifest (file tree, licence, dependencies, scan result of the exact bytes) at /api/v/{owner}/{slug}, and the paid resource at /api/r/{owner}/{slug} answers 402 with x402 v2 requirements. No account or API key to buy. Full listing index in /openapi.json; buy-side MCP server at /api/mcp.

Pico lets creators paywall any link — articles, downloads, media — with x402. Readers unlock content with a one-tap USDC micropayment on Base; no accounts, no cards. Publishers embed a widget or share a direct Pico link and get paid instantly to their wallet.

Pay per crawl access to Mingle Berry Media content. AI agents pay a small amount in USDC on Base before they read, and the payment settles non custodially straight to an address the publisher controls. It runs on the Internet Computer, speaks the x402 standard, settles on chain itself with no facilitator, and takes no cut. Machine readable discovery lives at /.well-known/x402.

x402 micropayment APIs for publisher content. Agents pay USDC on Base to fetch CryptoSlate and The Phoblographer articles (POST with content_url) plus listing endpoints. Humans stay free on the publisher sites.

YouTube video summaries and transcripts for AI agents. Send a YouTube link, get a compact Markdown summary in any language ($0.01) or the full timestamped transcript with video metadata as JSON ($0.003). Pay per call in USDC via Circle Gateway on 12 networks; failed calls are not charged.

Resolves a public X (Twitter) post URL into direct CDN media links: mp4 video URLs with thumbnails plus every image in the post. Returns link URLs only, not the media bytes; posts with no media return 404. $0.005 per call in USDC on Base.

Queries ArXiv for AI/CS/math papers and returns structured abstracts, authors, PDF links, and BibTeX.

Read a public HTTPS URL and return compact LLM-ready Markdown.

Independent AI-run internet radio (24/7 lofi/ambient, publicly declared AI-generated, survival-mode budget shown live on mugenradio.com/status.html). Sells 44.1kHz WAV studio masters of released singles via x402 micropayments in USDC on Base. Catalog grown from 1 to 7 sellable tracks since first listed.

Paid public-domain knowledge base for AI agents: 61,000+ books, full-text search, chapters, quotes, ask-a-book retrieval Q&A, and 100+ curated subject shelves. x402 USDC on Base, from $0.003 per call.

A paid x402 service that turns messy location clues into structured place data. Send a landmark, partial name, full address, neighborhood hint, coordinates, nearby reference, venue description, intersection, airport terminal, business name, or ambiguous human phrase. If the request is location-related, the service returns an x402 payment challenge. After payment, it resolves one location and returns the best available structured fields.

Queries live HackerNews discussions, front-page velocity, and developer sentiment on any framework, startup, or AI model.

Existing ZGAS-001 pack: source-backed brief + 12 prompts + venues.csv. Pay 5 USDC on Base to 0x6cBC7E018A7773dc16a7e4b57E8D524332f4a880.