How to Evaluate an API Before Committing 2026
A practical framework for evaluating APIs before committing — reliability, DX, pricing, security, and the 7 factors that matter most to developers in 2026.
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Guides
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457 guides
Featured guides
API Resilience: Circuit Breakers, Retries 2026
API resilience in 2026: circuit breakers, exponential backoff retries, bulkheads, timeouts, and fallbacks. TypeScript and Node.js examples with Cockatiel.
apiresilience
How to Design Predictable REST APIs in 2026
Design predictable REST APIs with current HTTP semantics, precise status codes, machine-readable errors, pagination, PATCH formats, and explicit version policies.
api-designrest-api
Tutorials
Mailtrap email API guide: from first send to production
Follow one transactional email from a Node.js request to delivery-event handling, with sender setup, safe retries, signed webhooks, pricing, and retention.
Email & messaging · Developer tools & API operations · · 10 min read
Tutorials
Generate and test a TypeScript SDK from OpenAPI with Scalar
In this walkthrough, we imported a synthetic OpenAPI document into Scalar, built one private TypeScript SDK, downloaded its source, and used it to make one request to a local mock.
Developer tools & API operations · · 5 min read
API shortlists
Best Stock Market and Financial Data APIs in 2026
Compare current stock market and financial data APIs by coverage, streaming, free limits, pricing, data rights, and developer fit.
Financial data & operations · · 13 min read
Comparisons
LangSmith vs Langfuse vs Braintrust: LLM Tracing 2026
Compare LangSmith, Langfuse, and Braintrust for LLM tracing, offline and online evals, OpenTelemetry, hosting, retention, and CI quality gates.
AI & machine learning · · 10 min read
Comparisons
Google Maps vs Mapbox vs HERE Geocoding API (2026)
Compare Google Maps, Mapbox, and HERE geocoding APIs for pricing, free usage, autocomplete, permanent storage, batch workflows, and app fit.
Maps & location · · 6 min read
Comparisons
LlamaParse vs Reducto: PDF Parsing API Comparison (2026)
LlamaParse vs Reducto for PDF parsing and document AI APIs: endpoint pricing, citations, batch workflows, RAG fit, compliance, and when each wins.
AI & machine learning · · 11 min read
Explainers
OpenAI Realtime API Voice Apps: WebRTC Guide (2026)
Build OpenAI Realtime API voice apps with WebRTC sessions, current voices, WebSocket tradeoffs, safety identifiers, pricing caveats, and production checks.
AI & machine learning · · 9 min read
Explainers
OpenWeatherMap Free Tier Limits 2026
OpenWeatherMap free tier limits in 2026: Free Weather API access, One Call 3.0/4.0 free-call thresholds, overage controls, and safer alternatives.
Weather & environment · · 6 min read
Comparisons
PlanetScale Status 2026: Supabase vs Neon vs PlanetScale
Is PlanetScale still available in 2026? Compare current PlanetScale pricing and posture with Supabase and Neon for serverless database API decisions.
Databases & backend · · 15 min read
Comparisons
Lithic vs Stripe Issuing vs Marqeta Card Issuing API Comparison (2026)
Compare Lithic, Stripe Issuing, and Marqeta for card issuing APIs: docs, DX, spend controls, authorization webhooks, bank lift, and pricing.
Payments & billing · · 10 min read
Comparisons
PostHog vs Mixpanel vs Heap 2026: Pricing Guide
PostHog vs Mixpanel vs Heap in 2026: pricing, event models, autocapture, session replay, warehouse export, and which product analytics platform to choose.
Analytics & customer data · · 9 min read
Comparisons
Realtime Voice AI APIs Compared: OpenAI, Gemini, Vapi, Retell, Twilio
Compare realtime voice AI APIs for 2026: OpenAI Realtime, Gemini Live, Deepgram, ElevenLabs, Twilio ConversationRelay, Vapi, and Retell for voice agents.
AI & machine learning · · 10 min read
Comparisons
AI Agent Memory APIs 2026: Zep vs Mem0 vs Letta for Production Agents
Compare Zep, Mem0, Letta, and agent memory API patterns for production AI agents: retrieval, summaries, identity, deletion, observability, and evaluation.
AI & machine learning · · 5 min read
API shortlists
Best Browser Automation APIs for AI Agents 2026
Compare browser automation APIs for AI agents: sessions, extraction, proxies, Playwright compatibility, screenshots, reliability, and operator controls.
AI & machine learning · Search & web data · · 6 min read
API shortlists
Production AI Agent API Stack 2026: Models, Tools, MCP, Browser, Memory, and Evals
A production AI agent API stack for 2026: model providers, tool APIs, MCP servers, browser automation, memory APIs, evals, security, and observability.
AI & machine learning · · 7 min read
Explainers
AI Gateway Rate Limiting Guide for Production LLM Apps
Evaluate AI Gateway Rate Limiting for Production LLM Apps by integration path, limits, pricing triggers, reliability, and migration risk.
AI & machine learning · · 5 min read
The API Integration Checklist (Free PDF)
Step-by-step checklist: auth setup, rate limit handling, error codes, SDK evaluation, and pricing comparison for 50+ APIs. Used by 200+ developers.
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