APIVerve Website Readability API

APIVerve Website Readability API analyzes a webpage and returns readability results, including eight scores and grade-level analysis. It accepts webpage input and can be accessed through an API, making it suitable for workflows that submit pages programmatically and process the returned data. The API uses POST at /v1/websitereadability over HTTPS, with an API key supplied in the x-api-key header. Each call consumes 10 credits from a shared account pool, and one key works across APIVerve's 300+ APIs. Results can be returned in JSON, XML, YAML, CSV, GraphQL, or MCP access. The product page includes a live request tool that can be tried without an API key, plus an embed option for an interactive website form. It names VerveKit, VerveSheets, automation services, Postman, and Node.js, Python, and .NET SDKs among its integration and developer options. APIVerve lists a free plan with 200 credits per month and paid plans starting at $29.99 a month. The service is available on the web and through API access.

APIVerve Website Readability API provides webpage readability analysis with API and integration options. Check the plan's credit and usage terms against expected request volume and intended use.

It suits developers and teams that need webpage readability scores or grade-level analysis in a web or API workflow. The free plan's credit limit and non-commercial-use condition matter for evaluation.

APIVerve Website Readability API turns webpage content into eight readability scores and grade-level results for software workflows. It is aimed at developers, analysts, and teams automating checks across sites rather than writers seeking a standalone editor. The endpoint’s broad output and integration support are compelling, while shared-credit accounting and free-plan restrictions require careful planning.

Overview

The service accepts a webpage through an HTTPS POST request to /v1/websitereadability. Authentication uses an API key in the x-api-key header, and one key can serve APIVerve’s 300-plus APIs. Every call costs 10 credits from a shared account pool, so readability volume is affected by activity in other APIVerve services.

Responses are available as JSON, XML, YAML, CSV, GraphQL, or MCP access. A live request tool on the product page can be used without an API key, making initial evaluation straightforward. The zero-code embed adds an interactive form to a website without exposing keys in the markup, but the input remains webpage content rather than arbitrary text.

Key features

Eight scores plus grade-level analysis provide a useful profile for automated content audits and publishing pipelines. Bulk search supports up to 200 items, but there are no domain variations, which limits projects that need side-by-side treatment of alternate domains.

Integration coverage is unusually wide for this focused endpoint. VerveKit supplies MCP agent access, while VerveSheets connects formulas to Google Sheets or Excel. Zapier, Make, Power Automate, Pipedream, n8n, ViaSocket, and Postman support automation, and SDKs are listed for Node.js, Python, and .NET. These options suit teams that need to place readability checks inside existing systems instead of building a bespoke client.

APIVerve lists the API as online with a 99.9% uptime SLA and typical p50 latency of 1798 ms. TLS 1.2 or newer protects traffic, stored data uses AES-256, and keys are hashed. Request and response content is processed in real time rather than retained; usage logs remain for 90 days. Those policies help organizations evaluating operational and data-handling requirements, though the latency is worth considering for interactive, high-volume use.

Pricing

The Free plan costs nothing and includes 200 credits per month, a 5 req/min limit, community support, and a non-commercial license with attribution required. Because each call costs 10 credits, that allowance covers 20 readability requests monthly. It is suitable for personal evaluation or a very small prototype, not a commercial service.

Starter is $29.99 a month, billed monthly, with 200,000 credits, 60 req/min, a commercial license, Zapier, Make and MCP access, and email support. It fits a modest production integration, although the shared pool still means other APIs can consume capacity.

Pro costs $99.99 a month, billed monthly, and raises the allowance to 1,000,000 credits and 180 req/min. It adds three team members, five scoped sub-keys, and 10 embedded forms, making it the practical tier for a multi-user deployment or several customer-facing forms.

Mega is $299.99 a month, billed monthly, for 4,000,000 credits and includes 10 team members, 25 scoped sub-keys, dedicated servers, 90-day audit history, and priority support. It is the clearest choice for heavier workloads and stricter operational separation. The cheaper tiers do not include dedicated servers, the larger team allowances, or the same support priority.

Platforms

APIVerve is offered through web and API access. The web playground and embeddable form help non-developers inspect or expose a check, while the API, MCP route, automation services, and SDKs target application and workflow integration.

Who it's for

Choose it for a commercial content platform, editorial pipeline, spreadsheet workflow, or agent-based process that needs webpage readability scoring and multiple delivery formats. The Starter tier is a sensible entry for small commercial workloads; Pro and Mega address teams, embedded experiences, and higher throughput. It is a poor match for users wanting offline analysis, arbitrary text input, or a generous free commercial quota.

Pros and cons

• Pro: Eight scores and grade-level analysis give automated audits more depth than a single readability number.
• Pro: JSON, XML, YAML, CSV, GraphQL, and MCP outputs accommodate varied technical stacks.
• Pro: Broad automation, spreadsheet, agent, and SDK integrations reduce custom connector work.
• Con: Ten credits per call makes the Free plan only 20 requests per month.
• Con: Free use is non-commercial and requires attribution.
• Con: Webpage-only input, a 200-item bulk cap, and no domain variations constrain specialized audits.
• Con: A typical p50 latency of 1798 ms may be unsuitable for latency-sensitive interfaces.

Alternatives

For a free, cross-platform standalone checker, ToolsVale Readability Checker supports Android, iOS, Linux, macOS, web, and Windows without an account. Choose Health Literacy Advisor instead when a paid annual English health-literacy product is the priority; its listed online license is $499 a year.

Readability is a free MIT-licensed GitHub Action, CLI, and Docker image for Linux, macOS, and Windows. Developers wanting a free Python package can choose textstat, which is MIT licensed and self-hosted. For a free English-only web tool, A2Z Tools Plain Language Analyzer is the simpler route.

ApyHub Readability Scores Documents API is worth considering when document-oriented API plans, lower paid pricing, or MCP access with 3,000 free atoms per month better fit the workload. Botoi Readability API suits buyers prioritizing a free allowance of 1,000 requests per day and 10 req/min. Oanor Readability API is another freemium API option.

Verdict

APIVerve Website Readability API is a strong choice for developers and teams that need webpage scoring embedded in commercial applications, automations, spreadsheets, or MCP workflows. Its main reason to choose it is the combination of eight scores, multiple response formats, and unusually broad integration support. Look elsewhere if you need free commercial use, arbitrary text input, offline tooling, or lower-latency interaction without committing to a larger plan.