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The App Store for AI Agents

Top 100 APIs of 2026

The premium marketplace for AI agent builders

bestapis.app curates the most reliable APIs across AI/LLM, fintech, devtools, security, and communication—so you can ship agentic products faster with total confidence.

100

Top APIs in the 2026 directory

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Core categories covered

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Curated AI-ready marketplace

Handpicked APIs with verified uptime, pricing clarity, and agent-ready docs.

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Search, filter, and compare the Top 100 APIs across emerging categories.

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top 100 api directory

The 2026 API landscape at a glance

Explore the most in-demand APIs across five critical categories. Filter by name, category, or capability to shortlist partners for your next AI-driven product.

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AI/LLM

Frontier LLMs, multimodal inference, and agent platforms.

FinTech

Payments, banking, fraud, and financial data rails.

DevTools

Infrastructure, observability, and productivity APIs.

Security

Identity, compliance, and threat detection tooling.

Communication

Messaging, voice, email, and engagement APIs.

AI/LLM

20 APIs

OpenAI

AI/LLM

Frontier LLMs and reasoning APIs for text, vision, and agents.

Anthropic

AI/LLM

Safety-focused Claude models for conversational tool use.

Google Gemini

AI/LLM

Multimodal Gemini models with long context and tools.

Mistral AI

AI/LLM

Open and commercial LLMs optimized for fast inference.

Cohere

AI/LLM

Enterprise-grade LLMs for search, RAG, and workflows.

Hugging Face

AI/LLM

Model hosting and inference APIs for open-source LLMs.

Perplexity

AI/LLM

Answer engine APIs blending search with LLM reasoning.

Together AI

AI/LLM

High-throughput inference for open models and tuning.

Groq

AI/LLM

Ultra-low-latency LLM inference on LPU hardware.

Fireworks AI

AI/LLM

Serverless LLM inference and fine-tuning for open models.

Stability AI

AI/LLM

Generative image, video, and audio model APIs.

Replicate

AI/LLM

Hosted inference for thousands of open-source models.

Runway

AI/LLM

Video generation and editing APIs for creative workflows.

ElevenLabs

AI/LLM

High-fidelity text-to-speech and voice cloning APIs.

AssemblyAI

AI/LLM

Speech-to-text and audio intelligence APIs.

Deepgram

AI/LLM

Real-time speech recognition and audio understanding APIs.

Adept

AI/LLM

Agentic model APIs for task execution across apps.

Character.AI

AI/LLM

Conversational character APIs for interactive agents.

Reka AI

AI/LLM

Research-grade multimodal LLM APIs for enterprise use.

xAI

AI/LLM

Grok models for real-time reasoning and analysis.

FinTech

20 APIs

Stripe

FinTech

Payments, billing, and treasury APIs for internet businesses.

Plaid

FinTech

Bank account connectivity and financial data APIs.

Adyen

FinTech

Global payment processing and risk management APIs.

Checkout.com

FinTech

Unified payments and fraud tooling with global coverage.

PayPal

FinTech

Digital wallet, checkout, and payout APIs.

Braintree

FinTech

Flexible payment gateway APIs for web and mobile.

Square

FinTech

Point-of-sale and payment APIs for omnichannel commerce.

Wise

FinTech

International transfer and FX APIs.

Ramp

FinTech

Corporate card and spend management APIs.

Brex

FinTech

Expense management and card issuance APIs.

Mercury

FinTech

Business banking APIs designed for startups.

Marqeta

FinTech

Card issuing and payment processing APIs.

Alloy

FinTech

Identity verification and compliance orchestration APIs.

Tink

FinTech

Open banking connectivity and payments APIs.

Finicity

FinTech

Consumer financial data access APIs.

Unit

FinTech

Embedded banking and card issuing APIs.

Lithic

FinTech

Card issuing and transaction controls APIs.

Moov

FinTech

Money movement and payout infrastructure APIs.

Sila

FinTech

ACH payments and identity compliance APIs.

Sardine

FinTech

Fraud prevention and risk scoring APIs.

DevTools

20 APIs

Supabase

DevTools

Postgres database, auth, and storage APIs for builders.

Vercel

DevTools

Frontend deployment, edge, and analytics APIs.

Netlify

DevTools

Web hosting, functions, and build automation APIs.

Render

DevTools

Managed cloud deploys for services and databases.

Fly.io

DevTools

Global app deployment with edge region APIs.

Railway

DevTools

Instant infrastructure and environment management APIs.

PlanetScale

DevTools

Serverless MySQL platform and branching APIs.

Neon

DevTools

Serverless Postgres with branching and autoscale APIs.

Aiven

DevTools

Managed open-source data services APIs.

Postman

DevTools

API testing, monitoring, and collaboration APIs.

Sentry

DevTools

Error tracking and performance monitoring APIs.

Datadog

DevTools

Observability and metrics ingestion APIs.

New Relic

DevTools

APM, logs, and telemetry APIs.

GitHub

DevTools

Code hosting, automation, and webhook APIs.

GitLab

DevTools

CI/CD, repo, and DevSecOps APIs.

Docker

DevTools

Container registry and build automation APIs.

Hasura

DevTools

Instant GraphQL APIs on top of databases.

Prisma

DevTools

Database toolkit and type-safe ORM APIs.

Temporal

DevTools

Durable workflow orchestration APIs.

LaunchDarkly

DevTools

Feature flagging and experimentation APIs.

Security

20 APIs

Okta

Security

Identity, SSO, and access management APIs.

Auth0

Security

Developer-friendly authentication and authorization APIs.

Cloudflare

Security

Edge security, WAF, and bot management APIs.

Snyk

Security

Developer security and dependency scanning APIs.

Wiz

Security

Cloud security posture and risk prioritization APIs.

Orca Security

Security

Agentless cloud workload protection APIs.

Lacework

Security

Behavioral threat detection and compliance APIs.

SentinelOne

Security

Endpoint protection and automated response APIs.

CrowdStrike

Security

Threat intelligence and endpoint security APIs.

Fortinet

Security

Network security and firewall management APIs.

Check Point

Security

Enterprise security management and threat prevention APIs.

Zscaler

Security

Zero trust network access and security APIs.

1Password

Security

Secrets management and password vault APIs.

Bitwarden

Security

Open-source password management APIs.

JumpCloud

Security

Directory, device, and identity management APIs.

Vanta

Security

Automated compliance and audit readiness APIs.

Drata

Security

Continuous compliance monitoring APIs.

Secureframe

Security

Compliance automation and evidence collection APIs.

Imperva

Security

Application security and data protection APIs.

Abnormal Security

Security

Email security and phishing defense APIs.

Communication

20 APIs

Twilio

Communication

Messaging, voice, and video APIs for engagement.

SendGrid

Communication

Transactional and marketing email delivery APIs.

Vonage

Communication

Voice, SMS, and programmable communications APIs.

MessageBird

Communication

Omnichannel messaging and engagement APIs.

Telnyx

Communication

Programmable voice, SMS, and carrier APIs.

Plivo

Communication

Voice and SMS APIs with global coverage.

Sinch

Communication

Enterprise messaging and verification APIs.

Bandwidth

Communication

Carrier-grade voice and messaging APIs.

Infobip

Communication

Global messaging, chat, and email APIs.

Slack

Communication

Team messaging and workflow automation APIs.

Microsoft Teams

Communication

Collaboration and meeting integration APIs.

Discord

Communication

Community messaging and bot APIs.

Zoom

Communication

Video meetings and webinar APIs.

Intercom

Communication

Customer support chat and automation APIs.

Zendesk

Communication

Support ticketing and messaging APIs.

Pusher

Communication

Realtime pub/sub and WebSocket APIs.

Stream

Communication

Chat, activity feeds, and video APIs.

OneSignal

Communication

Push notification and messaging APIs.

Braze

Communication

Customer engagement and lifecycle messaging APIs.

Brevo

Communication

Marketing automation and email APIs.

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