The Expression Evaluation API is a versatile natural language calculator that can evaluate mathematical expressions and return the results in plain text. Simply input the expression to be evaluated, and the API will scan and compute the calculation, making it an easy-to-use tool for developers who want to incorporate a calculator function into their applications.

Analyze how easy English or Spanish text is to read, then return readability scores, reading time, speaking time and average grade level.

EPC label, EPBD MEPS compliance, and stranding-risk screening across 8 EU markets — primary energy, solar obligation, renovation cost, and cap-rate discount modelling for lenders and asset managers.

One GET, one graded JSON report: a headless RSS/Atom/JSON Feed validator for CI checks, publishing pipelines and feed directories. Give it a feed URL (or a website that links to its feed) and get a

Score the readability of any English text. Returns Flesch-Kincaid, Gunning Fog, SMOG, ARI scores, sentence-level breakdown, improvement suggestions, and target grade pass/fail in one call.

Generate secure passwords to spec and score/audit password strength.

Find profitable trading cards to grade. Search any Pokemon, sports, or TCG card and get raw market price, PSA graded prices for grade 9 and grade 10, the spread after grading fees, and projected.

Streamline complex information using the Technical Writing Technical Writing Readability API for clear communication.

Boost student understanding with the EdTech Readability Improvement API designed for educational content.

Analyze and improve academic texts with the Academic Readability Analysis API for robust insights.

Increase user engagement by enhancing readability with the User Engagement User Engagement Readability API.

Make your content accessible to all users with the Accessibility Compliance Accessibility Compliance Readability API.

Enhance your content's clarity with the Content Marketing Content Marketing Readability API for better engagement.

Optimize your SEO strategy by improving readability with the SEO Optimization SEO Optimization Readability API.

Ensure your legal documents are crystal clear with the Legal Compliance Legal Compliance Readability API.

Assess risk effectively using our EU Building Energy Compliance Risk Assessment API, safeguarding your investments against non-compliance.

Protect your financial exposure with our Comprehensive Comprehensive EU Building Energy Compliance API for Financial Exposure ensuring robust compliance across all standards.

Streamline your lending processes with our Lender Focused Lender Focused EU Building Energy Compliance API tailored for energy efficiency standards.

Optimize your acquisition strategies with our Acquisitions Focused Acquisitions Focused EU Building Energy Compliance API, ensuring energy-efficient properties.

Gain valuable insights into building energy compliance with our Developer Insight Developer Insight EU Building Energy Compliance API for informed decisions.

Score misclassification risk (0–100) across 20 jurisdictions from a structured description of a working relationship, with the legal test applied and factor-by-factor reasoning.

Score misclassification risk before placing a worker in any of 20 jurisdictions, with financial exposure estimates and remediation guidance for EOR and payroll teams.

Score IR35 and off-payroll working risk for UK engagements, alongside 19 other jurisdictions' classification tests, with factor-by-factor reasoning.

Bulk-score up to 100 existing contractor relationships in one call, with per-worker risk levels and aggregate statistics to flag your highest-risk workers first.

CrimeScore returns higher-is-safer Safety Scores, grades, component scores, model factors, and nearby incident context for US real estate, PropTech, and location products.