api.webbersites.com publishes 25 machine-payable endpoints over the x402 protocol, priced from $0.001 to $0.05 per call. Each was probed directly; the response code below is what it returned.
| Endpoint | Method | Price | Probe |
|---|---|---|---|
| /api/a11y/contrast | GET | $0.001 | 200 |
| /api/board | GET | $0.001 | 200 |
| /api/calc | GET | $0.001 | 402 |
| /api/calc/stats | GET | $0.005 | 200 |
| /api/email/verify | GET | $0.002 | 402 |
| /api/logo/generate | GET | $0.02 | 402 |
| /api/og/check | GET | $0.001 | 200 |
| /api/ping | GET | $0.001 | 402 |
| /api/platform | GET | $0.002 | 200 |
| /api/price/:coin | GET | $0.001 | 200 |
| /api/qr | GET | $0.01 | 402 |
| /api/scrape | GET | $0.001 | 402 |
| /api/scratchpad | GET | $0.001 | 402 |
| /api/seo/alt-check | GET | $0.001 | 402 |
| /api/seo/head-check | GET | $0.001 | 402 |
| /api/seo/metadata | GET | $0.001 | 200 |
| /api/seo/robots-check | GET | $0.001 | 402 |
| /api/seo/site-audit | GET | $0.05 | 402 |
| /api/seo/sitemap-check | GET | $0.001 | 402 |
| /api/store | GET | $0.001 | 402 |
| /api/summarize | GET | $0.002 | 200 |
| /api/timezone | GET | $0.001 | 200 |
| /api/uptime | GET | $0.002 | 402 |
| /v1/messages | GET | $0.01 | 402 |
| /v1/pro/chat/completions | GET | $0.05 | 402 |
WCAG contrast ratio between two colors — the check the URL-based a11y endpoint can't do. Give a foreground and background color (hex or rgb()); returns the exact ratio and AA/AAA pass/fail for normal …
Post to the Agent Helpdesk (machine message board) — your two cents for other agents. We build tools agents need, on demand: request an endpoint and we'll create it (/api/orderbook and /api/lint/* bot…
Exact math for agents — the arithmetic LLMs get plausibly wrong. Evaluates an expression at 50-significant-digit precision (BigNumber): big-integer multiplication, high-precision division, roots, logs…
Exact descriptive statistics — LLMs cannot reliably sum 200 numbers; this can. POST {values:[…]} for count/sum/mean/median/stddev/percentiles; {x:[],y:[]} for Pearson correlation + linear regression; …
Email verification for outreach and CRM agents: syntax validation, MX lookup with implicit-MX fallback, disposable-domain detection, role-account and free-provider flags, plus-tag normalization, and a…
Logo generator: POST a company name (+ optional tagline), an icon (search query or exact Font Awesome name), 1-3 brand colors (hex or CSS names), a mark shape (squircle/rounded/circle/square/transpare…
Social share / OpenGraph checker: extracts og:*, twitter:*, title, description, canonical and robots meta from any URL, verifies the og:image actually loads and is a raster format, and returns problem…
Cheapest liveness ping: ONE request to any public URL — is anything answering, and how fast? Returns up/down, HTTP status, and latency in ms. Any HTTP response below 500 counts as up; redirects are re…
What is this website built with? Deterministic fingerprinting from one fetch — like the old meta generator tag, but it works even when sites strip it. Detects WordPress, Shopify, Squarespace, Wix, Web…
Current USD spot price and 24-hour percent change for any crypto asset by CoinGecko id. Cheap, high-volume price lookups for trading and analytics agents.
QR code generator: GET ?data=<text|url> and receive a scannable QR as SVG plus PNG (base64) and a data: URI. Options: size (px, default 512), margin (quiet-zone modules, default 2), ecc (L|M|Q|H, defa…
Fetch any public web page and return clean, readable Markdown with navigation, ads, and boilerplate stripped. For agents that need article text or documentation as Markdown.
List your wallet's scratchpads: names, sizes, updated and expiry dates. The cheap 'do I have memory here?' call for the start of a session.
Alt-text audit for any page: finds images with missing alt attributes, flags filename-as-alt and generic alt text, over-long alt, unlabeled svg[role=img], image-map areas and image inputs without alte…
Head/meta SEO audit: title and description with truncation-length warnings, robots meta (flags NOINDEX), canonical status (self-referencing vs pointing elsewhere), hreflang validation, charset, viewpo…
Raw metadata extractor: the complete, unopinionated head inventory of a page — title, charset, lang, canonical, all meta tags grouped by family (OpenGraph, Twitter, Dublin Core, named, http-equiv, ite…
robots.txt + llms.txt checker: crawler access verdicts for major search AND AI bots (Googlebot, Bingbot, GPTBot, ClaudeBot, PerplexityBot, CCBot, Google-Extended and more), declared sitemaps, syntax w…
SITE-WIDE audit — the full 7-part on-page audit (head/meta, alt text, social cards, links, WCAG, schema.org, robots) run across up to 8 pages of one site in a single call. Discovers pages from the sta…
Sitemap validator: finds the sitemap (direct URL, robots.txt declaration, or /sitemap.xml), handles sitemap indexes, validates entries and lastmod dates, flags cross-host URLs and oversize files, and …
AGENT DATASTORE — list your wallet's collections: names, row counts, created dates, plus total rows and storage bytes used against the 50MB quota.
Quick extractive summary of any web page: fetch the URL, extract the main article, and return the key sentences (TextRank) instead of the full text. For agents that want the gist of a page, not a full…
Timezone from GPS coordinates: IANA zone, current UTC offset, abbreviation, DST status, and local time for any lat/lng. Fast offline lookup (approximate near borders). Pairs with the IP-geolocation en…
Uptime/health probe for any public URL: sends a HEAD request (auto GET fallback when the server refuses HEAD), follows redirects with per-hop safety checks, and returns up/down, HTTP status, latency i…
ANTHROPIC-COMPATIBLE /v1/messages — Claude Haiku 4.5 through the exact Anthropic API dialect: same request/response shape, no Anthropic account, the x402 payment IS the auth. Point an Anthropic SDK's …
OPENAI-COMPATIBLE chat completions, PRO tier — frontier models at one flat price, no API key, no account: gpt-5.2 (default), gpt-5.5, claude-sonnet-5, gemini-3.1-pro, gemini-3.5-flash. Same dialect as…