# 4agent

> A directory of APIs, MCP servers, and developer tools built for AI agents.

## Main pages

- [Browse tools](https://4agent.dev)
- [API documentation](https://4agent.dev/api-docs)
- [Blog](https://4agent.dev/blog)
- [About 4agent](https://4agent.dev/about)
- [Contact](https://4agent.dev/contact)

## Categories

- [Sandbox](https://4agent.dev/category/sandbox)
- [Code Execution](https://4agent.dev/category/code-execution)
- [Email](https://4agent.dev/category/email)
- [Communication](https://4agent.dev/category/communication)
- [Browser](https://4agent.dev/category/browser)
- [Web Scraping](https://4agent.dev/category/web-scraping)
- [File Storage](https://4agent.dev/category/file-storage)
- [Database](https://4agent.dev/category/database)
- [Memory](https://4agent.dev/category/memory)
- [Vector DB](https://4agent.dev/category/vector-db)
- [Payment](https://4agent.dev/category/payment)
- [Auth](https://4agent.dev/category/auth)
- [Identity](https://4agent.dev/category/identity)
- [Monitoring](https://4agent.dev/category/monitoring)
- [Observability](https://4agent.dev/category/observability)
- [Search](https://4agent.dev/category/search)
- [Data](https://4agent.dev/category/data)
- [Deployment](https://4agent.dev/category/deployment)
- [Hosting](https://4agent.dev/category/hosting)
- [Audio](https://4agent.dev/category/audio)
- [Video](https://4agent.dev/category/video)

## Tools

- [21st](https://4agent.dev/tools/21st): Hosted infrastructure for deploying persistent AI agents
- [Activeloop](https://4agent.dev/tools/activeloop): Deep Lake database for multimodal AI and agent memory
- [AgentCash](https://4agent.dev/tools/agentcash): A wallet and paid API marketplace built for AI agents
- [AgentHaus](https://4agent.dev/tools/agenthaus): Visual agent builder that exports production-ready TypeScript
- [Agentic Fabriq](https://4agent.dev/tools/agentic-fabriq): Identity and permissioning for AI agents through a governed MCP gateway
- [AgentMail](https://4agent.dev/tools/agentmail): Email inbox API for AI agents — give your agent its own email address
- [AgentOps](https://4agent.dev/tools/agentops): Session replay, monitoring, and evaluation for AI agents
- [AgentQL](https://4agent.dev/tools/agentql): Semantic web interaction and data extraction for AI agents
- [Agentuity](https://4agent.dev/tools/agentuity): Full-stack cloud platform built for AI agents
- [Airbyte](https://4agent.dev/tools/airbyte): Data and context layer for production AI agents
- [Airweave](https://4agent.dev/tools/airweave): Open-source context retrieval for AI agents
- [Algolia](https://4agent.dev/tools/algolia): AI-powered search and discovery API for developers
- [Apify](https://4agent.dev/tools/apify): Cloud platform for web scraping, crawlers, and automation Actors
- [Arcade](https://4agent.dev/tools/arcade): MCP runtime for secure, production AI agent tool use
- [Arga Labs](https://4agent.dev/tools/arga-labs): Stateful service twins for testing and training AI agents
- [Arize Phoenix](https://4agent.dev/tools/arize-phoenix): Open-source tracing and evaluation for LLM applications
- [PostBridge](https://4agent.dev/tools/postbridge): Host WordPress in Shopify subfolders and export Notion docs to your CMS
- [AssemblyAI](https://4agent.dev/tools/assemblyai): Speech AI APIs for transcription, understanding, and voice agents
- [Auth0](https://4agent.dev/tools/auth0): Identity and delegated authorization for AI agents
- [AutoSend](https://4agent.dev/tools/autosend): Email platform for developers and AI agents — transactional and marketing
- [Axiom](https://4agent.dev/tools/axiom): Cloud-native logs, traces, and event data for agent systems
- [Baserun](https://4agent.dev/tools/baserun): Observability, testing, and evaluations for LLM applications
- [BentoLabs AI](https://4agent.dev/tools/bentolabs-ai): Monitoring and learning for long-running AI agents
- [Better Auth](https://4agent.dev/tools/better-auth): The most comprehensive authentication framework for TypeScript
- [Bland AI](https://4agent.dev/tools/bland-ai): Enterprise API platform for automated AI phone calls
- [Blaxel](https://4agent.dev/tools/blaxel): Perpetual sandbox platform — sandboxes that sleep but never die
- [Boundary](https://4agent.dev/tools/boundary): BAML programming language for reliable structured AI outputs
- [Braintrust](https://4agent.dev/tools/braintrust): Evaluation, tracing, and prompt management for AI products
- [Brave Search](https://4agent.dev/tools/brave-search): Privacy-focused search API with web, news, image, and video endpoints
- [Browserbase](https://4agent.dev/tools/browserbase): Headless browser infrastructure built for AI agents
- [Browserless](https://4agent.dev/tools/browserless): Managed browsers and automation APIs for AI agents
- [BrowserOS](https://4agent.dev/tools/browseros): Open-source agentic browser with a built-in MCP server
- [Browser Use](https://4agent.dev/tools/browseruse): Open-source browser automation library for AI agents
- [Captain](https://4agent.dev/tools/captain): Deterministic file search API for AI agents
- [Cerebrium](https://4agent.dev/tools/cerebrium): Serverless GPU infrastructure for AI inference and agents
- [Clerk](https://4agent.dev/tools/clerk-auth): Complete user management and authentication for modern apps
- [Clink](https://4agent.dev/tools/clink): Global payments, billing, and controlled commerce for humans and AI agents
- [CloudCruise](https://4agent.dev/tools/cloudcruise): Managed browser automation infrastructure for reliable agents
- [Cloudflare R2](https://4agent.dev/tools/cloudflare-r2): S3-compatible object storage with zero egress fees
- [Cloudflare Workers AI](https://4agent.dev/tools/cloudflare-workers-ai): Serverless AI inference on Cloudflare's global network
- [Coinbase CDP](https://4agent.dev/tools/coinbase-cdp): Coinbase Developer Platform — wallets, payments, and onchain tools for agents
- [Composio](https://4agent.dev/tools/composio): Tool integration platform for AI agents — 1000+ app connectors with managed auth
- [Confident AI](https://4agent.dev/tools/confident-ai): Evaluation and observability platform for reliable AI agents
- [Connix](https://4agent.dev/tools/connix): Nix-powered orchestration and reproducible environments for AI agents
- [Context.dev](https://4agent.dev/tools/context-dev): Current structured web data through one agent-ready API
- [Context7](https://4agent.dev/tools/context7): Up-to-date library documentation for coding agents via MCP
- [ContextForge](https://4agent.dev/tools/contextforge): Open-source MCP, A2A, and API gateway for AI agents
- [Coval](https://4agent.dev/tools/coval): Simulation, evaluation, and monitoring for voice and chat agents
- [Crawl4AI](https://4agent.dev/tools/crawl4ai): Open-source LLM-friendly web crawler and scraper with 60K+ GitHub stars
- [Credal.ai](https://4agent.dev/tools/credal-ai): Security and governance control plane for enterprise agents
- [Crossmint](https://4agent.dev/tools/crossmint): Cards and stablecoin wallets with scoped controls for agents
- [Crustdata](https://4agent.dev/tools/crustdata): Real-time company, people, jobs, web, and social data APIs
- [Cua](https://4agent.dev/tools/cua): Cloud desktops and computer-use infrastructure for AI agents
- [DAGWorks](https://4agent.dev/tools/dagworks): Open-source frameworks for reliable dataflows and agents
- [Daily](https://4agent.dev/tools/daily): Real-time audio and video infrastructure for conversational agents
- [dari.dev](https://4agent.dev/tools/dari-dev): Stateful model routing for applications and coding agents
- [Datris](https://4agent.dev/tools/datris): Agent-native open-source data platform with built-in MCP tools
- [Daytona](https://4agent.dev/tools/daytona): Secure sandbox infrastructure for running AI-generated code in <90ms
- [Dedalus Labs](https://4agent.dev/tools/dedalus-labs): Fast persistent Linux machines for long-running AI agents
- [Deepgram](https://4agent.dev/tools/deepgram): Speech-to-text, text-to-speech, and voice agent APIs
- [Descope](https://4agent.dev/tools/descope): Agentic identity, OAuth, and credential brokering in one control plane
- [Doppler](https://4agent.dev/tools/doppler): Secrets management and secure configuration for agent runtimes
- [E2B](https://4agent.dev/tools/e2b-sandbox): Cloud sandbox for AI agents to execute code
- [ElevenLabs](https://4agent.dev/tools/elevenlabs): AI audio platform — text-to-speech, voice cloning, and sound generation
- [Exa](https://4agent.dev/tools/exa-search): AI-native search API — fast, high-quality web search built for agents
- [Executor](https://4agent.dev/tools/executor): Unified tool gateway connecting AI agents to MCP, OpenAPI, and GraphQL integrations
- [fal](https://4agent.dev/tools/fal-ai): Generative media APIs optimized for fast inference
- [Firecrawl](https://4agent.dev/tools/firecrawl): Turn any website into clean markdown or structured data for LLMs
- [Freestyle](https://4agent.dev/tools/freestyle): Infrastructure for code you didn't write — sandboxed VMs, Git, and deployments for AI agents
- [Galileo](https://4agent.dev/tools/galileo): AI observability and evaluations for reliable production agents
- [Golf](https://4agent.dev/tools/golf): Security and governance infrastructure for MCP tools
- [Graphlit](https://4agent.dev/tools/graphlit): Knowledge graph RAG platform with 30+ live-sync connectors for AI agents
- [Guardrails AI](https://4agent.dev/tools/guardrails-ai): Open-source validation framework for safer, structured LLM applications
- [Hatchet](https://4agent.dev/tools/hatchet): Durable task orchestration for agents and background jobs
- [Helicone](https://4agent.dev/tools/helicone): Open-source AI gateway and observability platform
- [HelixDB](https://4agent.dev/tools/helixdb): Graph-vector database and knowledge infrastructure for agents
- [Herm](https://4agent.dev/tools/herm): Deploy production AI agents behind an API
- [HUD](https://4agent.dev/tools/hud): RL environments and scalable evaluations for AI agents
- [HumanLayer](https://4agent.dev/tools/humanlayer): Multiplayer IDE and cloud control plane for coding agents
- [Hyperbrowser](https://4agent.dev/tools/hyperbrowser): Serverless browser infrastructure for AI agents with CAPTCHA solving and stealth
- [Infisical](https://4agent.dev/tools/infisical): Open-source secrets management — API keys, certificates, and access on autopilot
- [Ink](https://4agent.dev/tools/ink-deploy): Deploy platform for AI coding agents — ship what your agent builds
- [Inngest](https://4agent.dev/tools/inngest): Durable workflows and background jobs for AI agents
- [Intuned](https://4agent.dev/tools/intuned): AI-maintained web scrapers, crawlers, and browser APIs
- [ix](https://4agent.dev/tools/ix-sandbox): Forkable sandbox infrastructure — snapshot any environment in 26ms
- [Jev](https://4agent.dev/tools/jev): Fast, typed decisions and calibrated probabilities for agent workflows
- [Jina AI](https://4agent.dev/tools/jina-ai): Reader, search, embeddings, and reranking APIs for agentic retrieval
- [kapa.ai](https://4agent.dev/tools/kapa-ai): Technical knowledge platform for support and coding agents
- [Kernel](https://4agent.dev/tools/kernel): Open-source cloud browser infrastructure for web agents
- [Kestrel AI](https://4agent.dev/tools/kestrel-ai): Deterministic platform-engineering workflows built and operated by AI agents
- [Keyframe Labs](https://4agent.dev/tools/keyframe-labs): Photoreal AI video personas for lifelike agent interactions
- [Klavis AI](https://4agent.dev/tools/klavis-ai): Hosted MCP integrations for enterprise AI agents
- [Laminar](https://4agent.dev/tools/laminar): Tracing, evaluations, and debugging for AI agents
- [LanceDB](https://4agent.dev/tools/lancedb): Open-source multimodal lakehouse and vector database
- [Langfuse](https://4agent.dev/tools/langfuse): Open-source LLM engineering platform: traces, evals, and prompts
- [LangSmith](https://4agent.dev/tools/langsmith): Framework-agnostic tracing, evaluation, and monitoring for agents
- [Lantern](https://4agent.dev/tools/lantern): Open-source Postgres vector search for AI applications
- [Lemma](https://4agent.dev/tools/lemma): Production tracing and debugging for AI agents
- [Letta](https://4agent.dev/tools/letta): Stateful agents with persistent memory and portable identity
- [Linkup](https://4agent.dev/tools/linkup): Web search API with source-grounded answers for agents
- [LiteLLM](https://4agent.dev/tools/litellm): Open-source gateway for calling 100+ LLM APIs
- [Locus](https://4agent.dev/tools/locus): Programmable wallets and payment infrastructure for AI agents
- [Manufact](https://4agent.dev/tools/manufact): Cloud and open-source SDKs for MCP servers and agents
- [Mastra](https://4agent.dev/tools/mastra): TypeScript framework for building and operating AI agents
- [Mem0](https://4agent.dev/tools/mem0): Universal memory layer for AI agents — persistent, personalized recall across sessions
- [Metorial](https://4agent.dev/tools/metorial): Governed MCP infrastructure connecting AI agents to real tools
- [Midplane](https://4agent.dev/tools/midplane): A safe MCP layer between AI agents and PostgreSQL
- [MindsDB](https://4agent.dev/tools/mindsdb): Federated AI data layer for agents across enterprise sources
- [Mintlify](https://4agent.dev/tools/mintlify): Documentation platform designed for humans and AI agents
- [Modal](https://4agent.dev/tools/modal-compute): Serverless cloud for running Python code, GPUs, and scheduled jobs
- [Modal](https://4agent.dev/tools/modal): High-performance serverless cloud for AI workloads with GPU support
- [MovingLake](https://4agent.dev/tools/movinglake): Real-time event-driven data connectors for agent context
- [Naïve](https://4agent.dev/tools/naive): Unified cloud infrastructure for AI-native apps and agents
- [Nango](https://4agent.dev/tools/nango): Build integrations with AI — connect your product and agents with 700+ APIs
- [Neon](https://4agent.dev/tools/neon-postgres): Serverless Postgres with branching and scale-to-zero
- [Nevermined](https://4agent.dev/tools/nevermined): Payment and monetization rails for AI agents and APIs
- [Noorle](https://4agent.dev/tools/noorle): Managed agent runtime with tools, workflows, MCP gateways, and generative UI
- [Novu](https://4agent.dev/tools/novu): Open-source notification infrastructure for multi-channel messaging
- [Omnara](https://4agent.dev/tools/omnara): Control plane for supervising coding agents from anywhere
- [OneCLI](https://4agent.dev/tools/onecli): Credential isolation and secure API access for AI agents
- [Openlayer](https://4agent.dev/tools/openlayer): Evaluation, observability, and governance for production AI
- [OpenPipe](https://4agent.dev/tools/openpipe): Fine-tuning and model optimization for production agents
- [OpenRouter](https://4agent.dev/tools/openrouter): Unified API for 300+ LLMs — one interface, all major models
- [Orthogonal](https://4agent.dev/tools/orthogonal): Trusted skills and unified APIs for AI agents
- [Outlit](https://4agent.dev/tools/outlit): Customer context layer for AI agents — every interaction, structured and queryable
- [Parallel](https://4agent.dev/tools/parallel): Web search and research APIs built for AI agents
- [Parea](https://4agent.dev/tools/parea): Evaluation and observability for LLM applications and agents
- [Parse](https://4agent.dev/tools/parse-bot): Web scraping API that turns websites into structured endpoints
- [Parsewise](https://4agent.dev/tools/parsewise): Multi-document processing API and MCP server for agents
- [Payman AI](https://4agent.dev/tools/payman-ai): Policy-controlled money movement for AI agents
- [Permit.io](https://4agent.dev/tools/permit): Fine-grained authorization for AI agents — control what agents can do at action time
- [Photon](https://4agent.dev/tools/photon): Open-source multi-channel messaging framework for AI agents
- [Pinecone](https://4agent.dev/tools/pinecone): Managed vector database for agent knowledge, retrieval, and memory
- [Pipedream](https://4agent.dev/tools/pipedream): Managed OAuth and 10,000+ API tools for AI agents
- [PlayAI](https://4agent.dev/tools/playai): Conversational voice models and APIs for real-time agents
- [Portkey](https://4agent.dev/tools/portkey): AI Gateway for 1600+ LLMs — observability, guardrails, and governance in one platform
- [PostHog](https://4agent.dev/tools/posthog): Product analytics and observability for agent experiences
- [Postiz](https://4agent.dev/tools/postiz): Open-source agentic social media scheduling and management tool
- [Primitive](https://4agent.dev/tools/primitive): Receive all emails as JSON webhooks — one MX record, all domains free
- [Promptfoo](https://4agent.dev/tools/promptfoo): Open-source evaluations and red teaming for LLM applications and agents
- [Qdrant](https://4agent.dev/tools/qdrant): Open-source vector database and semantic memory for AI agents
- [Railway](https://4agent.dev/tools/railway): All-in-one intelligent cloud provider — deploy anything without the complexity
- [Recall.ai](https://4agent.dev/tools/recall-ai): Universal meeting bot and recording API for AI applications
- [Reducto](https://4agent.dev/tools/reducto): Agentic document parsing and structured extraction API
- [Replicate](https://4agent.dev/tools/replicate): Run and deploy machine-learning models through a cloud API
- [Resend](https://4agent.dev/tools/resend-email): Email API built for developers and agents
- [Respan](https://4agent.dev/tools/respan): AI gateway, evaluations, and observability for agents
- [Retell AI](https://4agent.dev/tools/retell-ai): Voice agent API for production phone automation
- [Rindler](https://4agent.dev/tools/rindler): Deterministic website APIs and hosted MCP for AI agents
- [Runloop](https://4agent.dev/tools/runloop): Persistent development sandboxes and benchmarks for coding agents
- [Runpod](https://4agent.dev/tools/runpod): On-demand GPUs and serverless inference for AI workloads
- [ScopeGate](https://4agent.dev/tools/scopegate): Open-source permission gateway for MCP agents
- [Scrapybara](https://4agent.dev/tools/scrapybara): Virtual desktop sandboxes for AI agents in the cloud
- [ScreenshotOne](https://4agent.dev/tools/screenshotone): Screenshot rendering API — capture any website in one API call
- [Sentry](https://4agent.dev/tools/sentry): Full-stack error, performance, and AI agent monitoring
- [SerpApi](https://4agent.dev/tools/serpapi): Structured search engine results APIs for agents and applications
- [Serper](https://4agent.dev/tools/serper): Fast Google Search API for agent grounding and retrieval
- [Skyfire](https://4agent.dev/tools/skyfire): Agentic commerce platform — KYA identity and autonomous payments for AI agents
- [Smithery](https://4agent.dev/tools/smithery): MCP registry, connection runtime, and credential layer for agents
- [Spider](https://4agent.dev/tools/spider): High-speed web crawling and scraping API built for AI agents and LLMs
- [StableBrowse](https://4agent.dev/tools/stablebrowse): Machine-native web engine — semantic browsing without pixels
- [Steel](https://4agent.dev/tools/steel): Open-source cloud browser API for AI agents
- [Stripe](https://4agent.dev/tools/stripe-payment): Payments, billing, and financial infrastructure for the internet
- [Stytch](https://4agent.dev/tools/stytch): OAuth and OIDC infrastructure for agent-ready applications
- [Supabase](https://4agent.dev/tools/supabase): Open-source Firebase alternative: Postgres, auth, storage, and realtime
- [Superagent](https://4agent.dev/tools/superagent): Security scans, guardrails, and red teaming for AI-native software
- [Supermemory](https://4agent.dev/tools/supermemory): Context and persistent memory infrastructure for AI agents
- [Svix](https://4agent.dev/tools/svix): Managed and open-source webhooks for agent event delivery
- [Tavily](https://4agent.dev/tools/tavily-search): Search API optimized for AI agents and RAG pipelines
- [Temporal Cloud](https://4agent.dev/tools/temporal-cloud): Managed durable execution for reliable agent workflows
- [TensorZero](https://4agent.dev/tools/tensorzero): Open-source gateway, observability, and optimization stack for LLM applications
- [The Hog](https://4agent.dev/tools/the-hog): Unified web intelligence API for search, enrichment, and monitoring
- [Tigris](https://4agent.dev/tools/tigris): Globally distributed S3-compatible object storage built for AI
- [Tinybird](https://4agent.dev/tools/tinybird): Managed ClickHouse for real-time analytics APIs — every endpoint becomes an MCP tool
- [Toolhouse](https://4agent.dev/tools/toolhouse): Cloud platform for building, deploying, and connecting AI agent tools at scale
- [Traceloop](https://4agent.dev/tools/traceloop): OpenTelemetry observability for LLM and agent applications
- [Trigger.dev](https://4agent.dev/tools/trigger-dev): Durable background jobs and workflows for production AI agents
- [Truffle AI](https://4agent.dev/tools/truffle-ai): Managed cloud infrastructure for deploying AI agents
- [Turso](https://4agent.dev/tools/turso): Edge SQLite database that scales to millions of agents
- [Unstructured](https://4agent.dev/tools/unstructured): Document ingestion and transformation APIs for enterprise RAG
- [Upstash Redis](https://4agent.dev/tools/upstash-redis): Serverless Redis with REST API and global low-latency replication
- [Val Town](https://4agent.dev/tools/val-town): Collaborative serverless JavaScript runtime for APIs, crons, and data
- [Vapi](https://4agent.dev/tools/vapi): Voice AI platform for building production phone agents
- [Velt](https://4agent.dev/tools/velt): Embeddable review and approval infrastructure for agent-generated work
- [Vercel](https://4agent.dev/tools/vercel-deploy): Frontend cloud: deploy, preview, and scale web apps and APIs
- [Weaviate Cloud](https://4agent.dev/tools/weaviate-cloud): Managed vector database with hybrid search and native MCP
- [WorkOS](https://4agent.dev/tools/workos): Authentication, enterprise identity, and OAuth connections for agents
- [Zeabur](https://4agent.dev/tools/zeabur): Infrastructure layer for coding agents — deploy, provision, and manage services
- [Zep](https://4agent.dev/tools/zep): Context engineering platform with temporal knowledge graphs for agent memory
- [ZeroEntropy](https://4agent.dev/tools/zeroentropy): High-accuracy retrieval, reranking, and search APIs for agents
- [Zilliz Cloud](https://4agent.dev/tools/zilliz-cloud): Managed Milvus vector database for scalable agent retrieval

## Programmatic access

- JSON catalog: https://4agent.dev/api/tools
- XML sitemap: https://4agent.dev/sitemap.xml