x402 Content API
x402 content APIs that gate articles, media, and generated text behind a per-request HTTP 402 charge. Built for agents that fetch and pay for content on demand.
CONTENT SERVICES ── 63 total ── for live status visit /status
STATUS ── ● online · ◐ degraded · ○ offline · ─ unknown ── live health, see /status.
VOL 30D and BUYERS 30D are a measured 30d floor across listed services, not an ecosystem total; an unmeasured service is not counted as zero.
·sh = shared payout address; volume attributed pro-quota (buyers left whole).
Sponsor · This spot is open · 25 USDC/week(?)A sponsor supports this site. Learn about sponsorship.
| STATUS | NAME | DESCRIPTION | EP | FROM $/REQ | UPTIME · DAILY ROLLUP | VOL 30D | BUYERS 30D | NETWORKS |
|---|---|---|---|---|---|---|---|---|
| ○ | Supreme Audiobooks | DescriptionA corpus of 3,029 public-domain audiobooks by 1,822 authors, with original editorial descriptions and 1,644 machine transcripts across 12 languages (ar, bg, de, en, es, fr, hi, ja, ko, pt, ru, zh). Four x402-metered endpoints: the full catalogue, per-book records, substring search over title and author, and full transcript text per book per language. The audio is public-domain LibriVox narration and is NOT sold here; it is free from us and from LibriVox. What is metered is our own work: the catalogue metadata, the editorial essays, and the transcripts and translations. Human-facing pages and search-engine crawlers are never charged. Terms: https://supremeaudiobooks.com/licensing | 3 | $0.001 | 0.00% | $0 | 0 | Base |
| ○ | AnySpend | Descriptionx402 purchase endpoints from AnySpend on Base. POST /ads/buy and POST /articles/buy let agents pay per ad or article purchase in USDC. | 2 | $0.10 | 0.00% | $0 | 0 | Base |
| ○ | Nesebar travel corpus | Description330 verified travel and heritage guides to Nesebar and the Bulgarian Black Sea coast, in Bulgarian and English, as source markdown. Whole corpus $5.00, a single article $0.01, and ?since=<ISO date> returns only what changed at the same price. Free catalogue at /api/agent/manifest; OpenAPI at /openapi.json. | 2 | $0.01 | 0.00% | $0 | 0 | Base |
| ○ | ProofDesk Website QA Audit Kit | DescriptionA complete original website QA kit delivered as a 42,942-byte Markdown download for 10 USDC on Base via x402. Includes 102 identified checks, a report template, severity rubric, a clearly fictional worked example, delivery checklist and single-buyer commercial-use license. A free preview is available on the product page. This is a reusable digital product, not a custom audit or certification. | 1 | $10.00 | 0.00% | $0 | 0 | Base |
| ● | Creative Tim shadcn/ui Blocks | DescriptionReturns the source code of Creative Tim shadcn/ui blocks after a payment in USDC on Base, either as JSON via API or as an HTML page. Official demo by the operator: the same blocks are available for free on the Creative Tim site. | 2 | $0.01 | 82.05% | $0.47 | 6 | Base |
| ● | fast-debt-reduction.com SSR Pay-Per-Post & GEO Citation API | DescriptionAutonomous x402 Pay-Per-Post contextual article publishing ($1.00 USDC on Base Mainnet) and topological PageRank/CWV/WCAG audits ($0.05 USDC) with /llms.txt GEO citation indexing and Ed25519 receipts. | 2 | $0.05 | 87.18% | $1 | 1 | Base |
| ● | ArticleSyndicator 101-Domain SSR Pay-Per-Post & GEO Citation API | DescriptionAutonomous x402 Pay-Per-Post contextual article publishing ($1.00 USDC on Base Mainnet) and 101-domain topological PageRank/CWV/WCAG audits ($0.05 USDC). Includes /llms.txt GEO citation indexing, Ed25519 cryptographic publication receipts, and Layer 6 SpamBrain non-burning payment reservation. | 2 | $0.05 | 87.18% | $0 | 0 | Base |
| ● | LinkDepot.net 84-Category SSR Web Directory & AI Citation Hub | Description84-category server-side rendered (SSR) web directory and Schema.org Organization + ItemList citation hub. Offers $0 Reciprocal Partner listings, $9.99/mo Premium Profile subscriptions, and $99 Lifetime Featured VIP listings with native x402 USDC settlement on Base Mainnet (eip155:8453) and 50/50 partner revenue splits. | 3 | $0.05 | 88.46% | $0 | 0 | Base |
| ● | expertlawforum.com SSR Pay-Per-Post & GEO Citation API | DescriptionAutonomous x402 Pay-Per-Post contextual article publishing ($1.00 USDC on Base Mainnet) and topological PageRank/CWV/WCAG audits ($0.05 USDC) with /llms.txt GEO citation indexing and Ed25519 receipts. | 2 | $0.05 | 91.03% | $0 | 0 | Base |
| ● | massivecolo.com SSR Pay-Per-Post & GEO Citation API | DescriptionAutonomous x402 Pay-Per-Post contextual article publishing ($1.00 USDC on Base Mainnet) and topological PageRank/CWV/WCAG audits ($0.05 USDC) with /llms.txt GEO citation indexing and Ed25519 receipts. | 2 | $0.05 | 92.31% | $0 | 0 | Base |
| ● | iotsoftwaredeveloper.com SSR Pay-Per-Post & GEO Citation API | DescriptionAutonomous x402 Pay-Per-Post contextual article publishing ($1.00 USDC on Base Mainnet) and topological PageRank/CWV/WCAG audits ($0.05 USDC) with /llms.txt GEO citation indexing and Ed25519 receipts. | 2 | $0.05 | 96.15% | $0 | 0 | Base |
| ● | Agent Press Wire | DescriptionPress releases for AI agents. Give a product URL and what is being announced; get an AP-style press release written from the page. $1 publishes it on a search-indexed newsroom page with IndexNow ping. $99 distributes it to 500+ news sites plus 100+ TV and radio network sites after editorial review; $299 adds premium outlets. Charged only if the draft succeeds. No account or API key. | 3 | $1.00 | 100.00% | $2 | 2 | Base |
| ● | ApiToll Crypto News | DescriptionPay-per-call API returning Cointelegraph crypto news: latest feed or full-text search, with article body and view counts, across 14 locales. bash.001 USDC per call, on Base or Solana. | 1 | $0.001 | 100.00% | $0.11 ·sh | 30 | Base/SOL |
| ● | x402 Video Intelligence | DescriptionYouTube video transcripts and metadata, x402-gated. | 2 | $0.001 | 100.00% | $0 | 0 | Base |
| ● | Musicwire | DescriptionPay-per-call MusicXML validation, MuseScore rendering, and automated QC for AI agents. Returns MP3 and MIDI; charges only after QC passes. Solo 0.25 USDC, ensemble 0.50 USDC on Base. | 2 | $0.10 | 100.00% | $0 | 0 | Base |
| ● | penny402 | DescriptionThe penny arcade of the x402 economy: ten tiny, self-contained attractions for agents at a flat $0.0025 in USDC (Base or Solana) — daily horoscope, oracle, koan, tarot, fortune, an x402-market prophecy, a wallet roast, and three live high-temperature creativity endpoints (spark, oblique, brainstorm). Free directory at /penny and /v1/attractions; llms.txt and openapi.json published. No account, no API key; the unpaid 402 is the quote. No wagering, ever. | 10 | $0.0025 | 100.00% | $0.10 | 11 | Base/SOL |
| ● | ArXiv AI/CS Paper Search & Structured Token-Diet Digest | DescriptionQueries ArXiv for AI/CS/math papers and returns structured abstracts, authors, PDF links, and BibTeX. | 1 | $0.01 | 100.00% | $0 | 0 | Base |
| ● | makesPDF | DescriptionGenerate compliant PDFs (PDF/A-2A + PDF/UA-1) from markdown or a DSL — about a second, no headless browser. | 2 | $0.01 | 100.00% | $0.01 | 1 | Base |
| ● | X (Twitter) Media Downloader | DescriptionResolves 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. | 1 | $0.005 | 100.00% | $0.26 ·sh | 22 | ARB/Base/POL/SOL |
| ● | Content Moderation API | DescriptionWordlist-based profanity/explicit-content detection with basic obfuscation handling (leetspeak, repeated letters). Returns a flag, matched terms, and a redacted version. | 1 | $0.005 | 100.00% | $0 | 0 | Base |
| ● | Textus | DescriptionStructured literary content for AI agents and audio, game and media production. Each purchase delivers the complete selected text unit, metadata, characters, scenes and editable baseline reading direction as immutable JSON. Pay per resource with x402 v2: 0.49 USDC on Base. No rendered audio or provider execution. | 1 | $0.49 | 100.00% | $0.49 | 1 | Base |
| ● | Signal Sprint | DescriptionAPI x402 de pago por uso para convertir contexto de posicionamiento proporcionado por el cliente en una biografía profesional breve y estructurada. | 1 | $1.00 | 100.00% | $0.17 | 5 | Base |
| ● | Content Intelligence API | DescriptionWeb content API: extracts clean text, metadata and links from a URL, and returns AI summary, sentiment, topics, named entities and content type as structured JSON. Priced per call in USDC on Base or Solana. | 2 | $0.01 | 100.00% | $0.76 ·sh | 310 | Base/SOL |
| ● | Pinata | DescriptionAccount-free public IPFS pinning, paid per upload via x402. No signup or API key required. | 1 | $0.001 | 100.00% | $14 | 13 | Base |
| ● | Pharos Atlas Offset-Printing Review Reference | DescriptionRetrieve a fixed English editorial reference for offset-printing review. It covers job records, material questions, registration and sample checks, process limits, and provenance. The response is reference material, not a production inspection or authorization. | 1 | $0.01 | 100.00% | $0.15 | 6 | Base |
25 of 63 services ── category: Content ── all services
Measurement methodology
Page snapshot as of .