APIVerve Website Readability API vs ToolsVale Readability Checker

APIVerve Website Readability API analyzes a website and returns its readability score. It accepts webpage input, with API access for submitting requests programmatically, and lists eight readability scores and grade-level analysis. Requests use POST at /v1/websitereadability over HTTPS and require an API key in the x-api-key header; one key works across APIVerve’s 300+ APIs. Each call uses 10 credits from a shared account pool. Responses are available in JSON, XML, YAML, CSV, GraphQL and MCP. A live request tool on the product page can be tried without an API key, and a snippet can embed an interactive form without placing keys in markup. The service also names VerveKit, VerveSheets, automation integrations and Node.js, Python and.NET SDKs. Pricing is freemium: the Free plan provides 200 credits per month, while Starter costs $29.99 a month. The API is listed as online with a 99.9% uptime SLA and typical p50 latency of 1798 ms. APIVerve was founded in 2020 and is headquartered in Lee's Summit, Missouri.

ToolsVale Readability Checker evaluates pasted text or URLs for readability, crawler access, and paragraphs that may need revision. It combines seven readability formulas into a weighted consensus grade and reports Readability, Content Clarity, and beta AI Citation Readiness scores. Paragraphs receive color-coded scores, with difficult sentences available for inspection, and the checker provides rule-specific fixes classified as deterministic, safe-with-review, or semantic. Crawler checks fetch pages as Chrome, Googlebot, GPTBot, ClaudeBot, and PerplexityBot to flag blocked access or substantial content differences. Users can compare up to 10 URLs side by side in one run, and share reports through links available for 48 hours. The checker is free, requires no account, has no daily limit, and does not put features behind a paywall; it allows 30 checks per minute per IP address. Requests are processed on a server over an encrypted connection, and uploaded content is deleted within one hour. Because page fetching uses raw HTML, client-side JavaScript content may not appear; the site suggests pasting visible text for JavaScript-heavy pages.