Build assistants that reason, write code, and use tools with the Claude API.
AI modelsLanguage modelsTool use
Documentation Source reviewed
Build an AI agent
An AI agent stack combines a model that can use tools, sources of context, and APIs that perform actions. Start with a model provider, add retrieval or web search when your task needs fresh information, and connect only the business tools your agent needs.
Editorial selection · Summaries reviewed · Our methodologyChoose your building blocks
Connect accounting and ERP software through unified APIs and give agents access through MCP.
Business APIsUnified APIsAccountingMCP
Documentation Source reviewed
Turn websites into structured data and readable content for AI applications.
Search & dataWeb scrapingExtraction
Documentation Source reviewed
Search the web and retrieve page content for AI research and agent workflows.
Search & dataWeb searchResearch
Documentation Source reviewed
Connect AI tools to your Supabase projects to query data and manage development workflows.
Developer toolsDatabaseMCP
Documentation Source reviewed
Give AI assistants access to Stripe tools for payments and business operations through MCP.
Business APIsPaymentsMCP
Documentation Source reviewed
Ask Claude or ChatGPT about company spend, subscriptions, invoices and runway through Husk’s MCP server.
Business APIsSpend managementMCP
Documentation Source reviewed
Send transactional emails from your application with an API built for developers.
Business APIsEmailNotifications
Documentation Source reviewed
Build enterprise AI with language models, embeddings, and reranking for retrieval workflows.
AI modelsEmbeddingsReranking
Documentation Source reviewed
Store and search vector data to retrieve relevant context for AI applications.
Search & dataVector databaseRetrieval
Documentation Source reviewed
Search the web and extract content for research agents and AI applications.
Search & dataWeb searchResearch
Documentation Source reviewed
Run supported language and audio models through Groq’s inference API.
AI modelsInferenceAudio
Documentation Source reviewed
Connect AI assistants to workspace content using Notion’s hosted MCP server.
Developer toolsKnowledgeMCP
Documentation Source reviewed
Build applications with language, image and audio models through the OpenAI API.
AI modelsLanguage modelsMultimodal
Documentation Source reviewed
Generate content and analyze multimodal inputs with the Gemini API.
AI modelsLanguage modelsMultimodal
Documentation Source reviewed
Access Mistral models through an API for text generation and AI application development.
AI modelsLanguage modelsInference
Documentation Source reviewed
Integrate DeepSeek models through its chat completion API.
AI modelsLanguage modelsChat completions
Documentation Source reviewed
Build applications with Grok models through the xAI API.
AI modelsLanguage modelsInference
Documentation Source reviewed
Run supported open models through hosted inference APIs and dedicated endpoints.
AI modelsOpen modelsInference
Documentation Source reviewed
Serve supported open models using hosted inference and deployment APIs.
AI modelsOpen modelsInference
Documentation Source reviewed
Access supported language models through the Cerebras inference API.
AI modelsLanguage modelsInference
Documentation Source reviewed
Run machine-learning models through an API, including models for images, video and language.
AI modelsMultimodalInference
Documentation Source reviewed
Build application backends with databases, user accounts, functions and file storage.
Data & databasesBackendDatabases
Documentation Source reviewed
Manage repositories, work items, pipelines and project collaboration through Azure DevOps Services.
Developer toolsRepositoriesCI/CD
Documentation Source reviewed
Automate browsers, scrape websites and run browser-based audits through Browserless APIs.
Search & dataBrowser automationWeb scraping
Documentation Source reviewed
Generate speech, transcribe audio and manage voices through Cartesia APIs.
Voice & audioSpeech synthesisTranscription
Documentation Source reviewed
Retrieve current library documentation and code examples for coding agents.
Developer toolsDocumentationCoding agents
Documentation Source reviewed
Inspect CI test runs, failures and flaky tests using Currents execution data.
Developer toolsTestingCI/CD
Documentation Source reviewed
Access search-engine results, keyword research and marketing data through DataForSEO APIs.
Search & dataSearch dataSEO
Documentation Source reviewed
Investigate application traces, logs and performance using Logfire telemetry.
Developer toolsObservabilityTracing
Documentation Source reviewed
Retrieve website behavior analytics through the Microsoft Clarity data export API.
Developer toolsAnalyticsWebsite behavior
Documentation Source reviewed
Query cloud analytics data with MotherDuck and DuckDB clients.
Data & databasesSQLAnalytics
Documentation Source reviewed
Search indexed data, inspect mappings and manage OpenSearch clusters through their APIs.
Data & databasesSearchData indexing
Documentation Source reviewed
Evaluate LLM applications and inspect traces, feedback scores and prompts with Opik.
Developer toolsLLM evaluationObservability
Documentation Source reviewed
Collect structured web data with Oxylabs Web Scraper API and AI Studio tools.
Search & dataWeb scrapingExtraction
Documentation Source reviewed
Investigate security alerts, query logs and manage detections in Panther security.
Developer toolsSecurityDetection engineering
Documentation Source reviewed
Search the web, fetch pages and run research or enrichment tasks through Parallel APIs.
Search & dataWeb researchEnrichment
Documentation Source reviewed
Extract structured information from websites with ScrapeGraphAI APIs.
Search & dataWeb scrapingExtraction
Documentation Source reviewed
Retrieve structured search results and other real-time search data through SearchAPI.
Search & dataSearch dataWeb search
Documentation Source reviewed
Connect eligible Grasshopper business banking accounts to a read-only MCP integration for financial analysis.
Business APIsBanking dataRead-only analysis
Documentation Source reviewed
Access business accounts, balances, transactions and cards, and draft payments through Meow integrations.
Business APIsBusiness bankingPayments
Documentation Source reviewed
Manage business accounts, cards, transactions and payments through the Slash API.
Business APIsCardsPayments
Documentation Source reviewed
What to evaluate
- Evaluate model quality on tasks from your own application.
- Check tool permissions, authentication, and approval requirements before enabling writes.
- Measure the total cost and latency of a complete task, including tool calls.
Provider documentation
Read the original sources for current capabilities, setup requirements, and usage terms. These selections are starting points, not a performance ranking.
| Provider | Use case | Primary source |
|---|---|---|
| Anthropic | Language models, Tool use | Anthropic documentation ↗ |
| Apideck | Unified APIs, Accounting, MCP | Apideck documentation ↗ |
| Firecrawl | Web scraping, Extraction | Firecrawl documentation ↗ |
| Exa | Web search, Research | Exa documentation ↗ |
| Supabase | Database, MCP | Supabase documentation ↗ |
| Stripe | Payments, MCP | Stripe documentation ↗ |
| Husk | Spend management, MCP | Husk documentation ↗ |
| Resend | Email, Notifications | Resend documentation ↗ |
| Cohere | Embeddings, Reranking | Cohere documentation ↗ |
| Pinecone | Vector database, Retrieval | Pinecone documentation ↗ |
| Tavily | Web search, Research | Tavily documentation ↗ |
| Groq | Inference, Audio | Groq documentation ↗ |
| Notion | Knowledge, MCP | Notion documentation ↗ |
| OpenAI | Language models, Multimodal | OpenAI documentation ↗ |
| Google Gemini | Language models, Multimodal | Google Gemini documentation ↗ |
| Mistral AI | Language models, Inference | Mistral AI documentation ↗ |
| DeepSeek | Language models, Chat completions | DeepSeek documentation ↗ |
| Grok API (xAI) | Language models, Inference | Grok API (xAI) documentation ↗ |
| Together AI | Open models, Inference | Together AI documentation ↗ |
| Fireworks AI | Open models, Inference | Fireworks AI documentation ↗ |
| Cerebras | Language models, Inference | Cerebras documentation ↗ |
| Replicate | Multimodal, Inference | Replicate documentation ↗ |
| Appwrite | Backend, Databases | Appwrite documentation ↗ |
| Azure DevOps | Repositories, CI/CD | Azure DevOps documentation ↗ |
| Browserless | Browser automation, Web scraping | Browserless documentation ↗ |
| Cartesia | Speech synthesis, Transcription | Cartesia documentation ↗ |
| Context7 | Documentation, Coding agents | Context7 documentation ↗ |
| Currents | Testing, CI/CD | Currents documentation ↗ |
| DataForSEO | Search data, SEO | DataForSEO documentation ↗ |
| Pydantic Logfire | Observability, Tracing | Pydantic Logfire documentation ↗ |
| Microsoft Clarity | Analytics, Website behavior | Microsoft Clarity documentation ↗ |
| MotherDuck | SQL, Analytics | MotherDuck documentation ↗ |
| OpenSearch | Search, Data indexing | OpenSearch documentation ↗ |
| Opik | LLM evaluation, Observability | Opik documentation ↗ |
| Oxylabs | Web scraping, Extraction | Oxylabs documentation ↗ |
| Panther | Security, Detection engineering | Panther documentation ↗ |
| Parallel | Web research, Enrichment | Parallel documentation ↗ |
| ScrapeGraphAI | Web scraping, Extraction | ScrapeGraphAI documentation ↗ |
| SearchAPI | Search data, Web search | SearchAPI documentation ↗ |
| Grasshopper Bank | Banking data, Read-only analysis | Grasshopper Bank documentation ↗ |
| Meow | Business banking, Payments | Meow documentation ↗ |
| Slash | Cards, Payments | Slash documentation ↗ |