Document, PDF and OCR APIs for AI agents

Document and PDF extraction APIs turn a file an agent has found into text or structured fields it can use: a PDF into Markdown, an image into text by OCR, or an invoice into vendor, amount and line items. This page keeps Tools, Data and Intelligence listings that mention PDF, OCR, document extraction or parsing, extracting text, or invoice and receipt parsing, or whose name says PDF, OCR, document or invoice. Some go the other way and render a PDF, and they are included because an agent working with documents needs both. Discovery is free in the PayAPI Market catalogue. The agent pays the provider per call over x402 in USDC on Base, Solana or Algorand, with no API key and no upload account. Settlement-verified means a paid route with an on-chain receipt, and the examples are claimed listings that have one. Unclaimed (bazaar) imports are labelled and appear afterwards. Listing is free and the provider keeps 100% of every settled call.

29 APIs and 370 endpoints match this page. 13 are settlement-verified: a paid route with an on-chain receipt.

Settlement-verified examples

Screenshot & PDF Capture API · $0.002 · settlement-verified · On-chain receipt
4 endpoints for headless web capture: viewport screenshot, full-page screenshot (scrolled), PDF render with print emulation, and CSS-selected element capture. Powered by Playwright + Chromium with one warm browser instance per process. Returns base64-encoded binary in JSON to keep the x402 envelope consistent.
FreelanceDesk Invoicing API · $0.05 to $0.1 · settlement-verified · On-chain receipt
Validate invoice JSON ($0.05); get a print-ready A4 invoice as PDF or self-contained HTML ($0.10). Also the offline invoicing app and document pack as zip ($14/$7). USDC on Base, no key.
Agent Data Tools · $0.002 to $0.2 · settlement-verified · On-chain receipt
176 pay-per-call tools for AI agents at one origin, most at $0.003: counterparty and OFAC sanctions checks for wallets, token prices and wallet portfolios, chain reads on Base, Ethereum, Arbitrum, Optimism and Polygon (balances, token transfers, logs, gas, receipts), web page and PDF to Markdown, company and domain checks, FX, weather and time, and OpenAI-compatible chat and embeddings. x402 v1/v2 on 5 networks and MPP; failed calls are never charged.
Arabic Pipeline API · $0.002 to $0.03 · settlement-verified · On-chain receipt
Pay-per-call Arabic utilities: text normalization, text metrics, audio transcription and document extraction. USDC on Base over x402 - no API key, no account, no signup.
FreeTier Agent API: Invoice to JSON · $0.0075 · settlement-verified · On-chain receipt
Invoice or receipt (PDF, PNG/JPEG image or plain text) to fixed-schema JSON: vendor, customer, invoice number, issue/due date, currency, subtotal, VAT, total, VAT breakdown and line items. Every field has value, verbatim source quote and confidence; arithmetic checks included. $0.003 per page (402 quotes pages x $0.003, max 10 pages). Cloudflare Workers AI only, documents not stored.
Invoice-OCR API · $0.02 · settlement-verified · On-chain receipt
Extract structured JSON (vendor, amount, date, line items) from an uploaded invoice or receipt document.
ipv4.fr PDF to Markdown · $0.03 · settlement-verified · On-chain receipt
Convert a public PDF (up to 20 pages, 20 MB) to clean Markdown, keeping headings, lists and tables. Maintained by ipv4.fr.
Machina · $0.005 to $0.5 · settlement-verified · On-chain receipt
Machine-to-machine utility APIs for AI agents. 8 endpoints: Python code scanning, email validation, domain intelligence, PDF extraction, URL extraction. USDC on Base.
Money Reactor Lorem Ipsum Generator · $0.002 · settlement-verified · On-chain receipt
Lorem ipsum generator (?p=1..20): word-level randomized filler paragraphs for mockups, PDF/PPT drafts, email templates and UI tests. No copyright risk, fresh output every call. Settles in USDC via x402 (Base). Real-time deterministic response, always-deliver guarantee.
OCR for agents: send an image URL or base64 (PNG, JPEG, WebP, GIF; up to 3 MB) · $0.002 · settlement-verified · On-chain receipt
OCR for agents: send an image URL or base64 (PNG, JPEG, WebP, GIF; up to 3 MB) and get the text it contains in reading order, as plain text or Markdown (tables, lists). Works on screenshots, receipts, invoices, signs and documents. $0.002 USDC per image on Base; images with no readable text are not charged. Gemma 4 vision. By DevX.
PDF to text: extract the text of any public PDF, page by page · $0.003 · settlement-verified · On-chain receipt
PDF to text: extract the text of any public PDF, page by page. The text of a public PDF, page by page: pass ?url= of a whitepaper, filing, invoice or paper and get every page's text with page markers, the page count and the file size. Parsed with pdf.js; up to 15 MB and 200 pages. A file that is not a PDF, will not open, or has no text layer (scanned images) is refused before any charge.
Vennatta Document Extraction · $0.01 · settlement-verified · On-chain receipt
Extract structured text, summaries, or metadata from supplied text or a public HTTPS document URL. Agent-facing x402 API.

Unclaimed (bazaar) imports

These rows were imported and the provider has not claimed them. They are not the examples above.

Adam Hale Tools paid API (x402) · $0.001 to $0.01 · Unclaimed (bazaar)
Web data lookups for agents: PDF and document to Markdown, short audio transcription (Whisper), website screenshots, web page to clean Markdown, domain WHOIS (RDAP) with DNS and email security, robots.txt crawl permissions, plus bulk versions of the free tools at https://tools.adamhaleworks.workers.dev/tools/ (tech stack, SEO meta tags, URL status, sitemap URLs, RSS/Atom to JSON, EU TED tender search). No account or API key; each call is paid in USDC on Base (eip155:8453) to 0x491Fcf30a5aa0483B3cd8C0041d21801F195B3AF. Credit: 402 Index (MIT)
AgentWork Web Evidence · $0.001 to $0.01 · Unclaimed (bazaar)
Ten pay-per-call tools for agents: web read, fetch URL and URL to Markdown (batch, optional JavaScript rendering), batch web contents (up to 20 URLs), website change monitoring with hashes and line diffs, UK attraction changes, PDF text extraction and PDF pre-check, prompt-injection check (pattern rules plus a local Qwen3-4B classifier, rules-only fallback) and sanctions screening (UK, OFAC, EU, UN lists). x402 USDC on Base or Algorand, no account or API key. Data: x402-list.com (CC BY 4.0) Credit: 402 Index (MIT)
Doc to JSON · $0.005 to $0.02 · Unclaimed (bazaar)
Web pages, PDFs and feeds turned into clean structured JSON for AI agents: metadata, schema.org data, tables, headings, readable text, per-page PDF text, feed items. Pay per call over x402, no API key. Credit: 402 Index (MIT)
Emboss · $0.01 to $0.08 · Unclaimed (bazaar)
Emboss turns any PDF form into a fillable one, fills it from data or supporting documents, reads a filled form back, and faxes the result to a US, Canadian or Mexican fax number. Operations: make fillable, fill from values, fill from documents, read a filled form back, send by fax. Pay per operation over plain HTTP with x402 or MPP, no account needed. The account API, the MCP server and the A2A agent are described at the links in x-service-info. Data: x402-list.com (CC BY 4.0) Credit: 402 Index (MIT)
geld machen x402 · $0.03 to $0.75 · Unclaimed (bazaar)
TIP-OF-SPEAR: URL Fingerprint ($0.01) GET ?url= → body_sha256/TLS/DNS. Phase-1 enrichment: Web Extract ($0.03) GET ?url= → Firecrawl clean markdown. DEMAND-MATCHED SERP tip: Web Search ($0.02) GET ?q= (required) → ranked results. OCR tip: Image OCR ($0.01) GET ?url= → Tesseract text (COGS=0). Builder tool: Bazaar Readiness Check - FREE ?url= indexed yes/nein + issue count; PAID report $0.05 Fix-JSON. Gated-data: Base DeFi Snapshot ($0.03) balances+gas+protocol TVL/APY. Free teasers have no live hash/results. Upsell red-flag $0.25. Ladder: 0.01→0.02→0.025→0.25→0.35→0.49→0.75→17. | tip: featured Credit: 402 Index (MIT)
img-categorize · $0.005 to $0.03 · Unclaimed (bazaar)
Vision toolbox paid per-call via x402 (USDC on Base): zero-shot categorization, captioning, OCR, CLIP embeddings. No accounts or API keys. Data: x402-list.com (CC BY 4.0) Credit: 402 Index (MIT)
ipv4.fr Network Tools API · $0.002 to $0.05 · Unclaimed (bazaar)
Fast, reliable network tools API. 13 endpoints: IP lookup, DNS records, SSL certificates, port scanning, email validation, WHOIS, IP geolocation, blacklist check, subnet calculator, AI domain security audit, web page to Markdown, company profile enrichment, PDF to Markdown. Free tier: 25 req/day. Pro: 10,000 req/day. Crypto payments (BTC, ETH, USDC). Pay-per-call without an account: the /x402/v1 routes accept x402 payments in USDC on Base (no API key, no signup). Data: x402-list.com (CC BY 4.0)
Jithox E-Invoice Readiness · $0.01 · Unclaimed (bazaar)
Jithox E-Invoice Readiness: 0.01 USDC per accepted call on eip155:8453, paid per call over x402. Data: x402-list.com (CC BY 4.0)
makesPDF API · $0.01 to $0.02 · Unclaimed (bazaar)
Deterministic PDF rendering API: GitHub-flavoured Markdown or a compact DSL to tagged, PDF/A-2A + PDF/UA-1 dual-compliant PDFs. Authenticate with a Bearer token (API key or OAuth device flow), or pay per call via x402 (USDC on Base) on the x402-tagged operations. Errors use the shared Error schema. Rate limits are reported in RateLimit / RateLimit-Policy headers, with Retry-After on 429. Versioning: the major version is in the path (/api/v1); breaking changes ship as a new version, and a deprecated endpoint keeps working for at least 90 days after it starts sending Deprecation and Sunset heade Data: x402-list.com (CC BY 4.0)
PaidPilot Invoice API · $0.01 to $1 · Unclaimed (bazaar)
Invoice tools for agents, paid per call in USDC over x402: invoice PDF, payment reminder drafts, late-fee and payment-terms math, timesheet to invoice. No accounts, no API keys. Also an MCP server at /mcp. Data: x402-list.com (CC BY 4.0)
shipsafe · $0.02 · Unclaimed (bazaar)
URL-to-clean-markdown extraction API, on-demand broken-link scan API, pre-deploy link audit API, DNS health audit API, llms.txt / AI-crawler audit API, spec-linted llms.txt audit API, email-deliverability (SPF/DKIM/DMARC) audit API, PDF-to-markdown conversion API, technology-stack fingerprinting API, security-headers audit API, and PDF metadata-intel API for coding agents. Paid per call in USDC via x402 on Base. Credit: 402 Index (MIT)
Signal Forge x402 Services · $0.005 · Unclaimed (bazaar)
Pay-per-call prospect qualification, listing formatting, ad/page checks and batches, English creative OCR, campaign-link checks, email HTML preflight and on-demand offer comparisons. USDC on Base; reports include evidence and limitations. Purchase feedback is free. Data: x402-list.com (CC BY 4.0)

Questions

How does an agent send a document to these APIs?

Usually as a public URL or as base64 in the request body. Size and page limits differ by listing, and the description states them.

Are uploaded documents stored?

That depends on the provider, so read its terms before sending anything private. PayAPI Market never sees the document, because the agent calls and pays the provider directly.

Can it read scanned documents?

Listings that offer OCR can read images and scanned pages. Plain PDF to text listings read the text layer only. The listing description says which method it uses.