ApyHub Readability Scores Documents API vs Zuplo

ApyHub Readability Scores Documents API scores documents and publicly accessible web pages, returning a readability score, reading level, and text statistics. File requests accept PDF, DOC, or DOCX uploads up to 100 MB. English checks use the Flesch Reading Ease formula by default, while German uses the Wiener Sachtextformel. Results can include word, sentence, character, and paragraph counts, average lengths, and estimated reading and speaking times. The score includes a grade class, a plain-language label, and an indication of whether a standard readability threshold is met. ApyHub lists uses such as reviewing contracts, policies, manuals, help pages, websites, reports, and proposals; AI agents can also access the API through ApyHub MCP for content reviews. The product page offers five API calls a day free without a card. Starter is free and includes 3,000 atoms per month; Pro costs $16 a month and Pro+ $42 a month. Requests can return a 429 rate_limited error when the plan's per-second limit is exceeded.

Zuplo is an API management platform with API Gateway, AI Gateway, and MCP Gateway products. API protections include API keys, JWT, Basic Auth, mTLS, bot detection, rate limiting, and schema validation. OpenAPI supports documentation and cataloging, and every plan includes a hosted developer portal that can use a customer domain. The AI Gateway routes requests among OpenAI, Anthropic, Google, and Mistral, and offers semantic caching, prompt injection protection, secret masking, and spending budgets. MCP Gateway is included on every plan for authenticating, routing, and governing MCP servers. Documented logging integrations include AWS CloudWatch, Datadog, Dynatrace, New Relic, Google Cloud Logging, Loki, Splunk, Sumo Logic, and VMware Log Insight. Zuplo says its gateways deploy to more than 300 edge locations; self-hosted or dedicated deployment is available. GitHub GitOps is supported on Free and Builder, while Enterprise lists GitHub, Bitbucket, GitLab, and Azure DevOps. Free costs nothing and includes up to 100K monthly requests. Builder costs $25 a month, with additional requests charged at $100 per 100K.