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Exa

Exa is a web search API and AI research platform built specifically for LLMs and agents — semantic and keyword search across the open web with token-efficient highlights, structured outputs, sub-200ms latency tiers, and verticals for code, companies, news, people, research, and financials. The platform pairs the core Search, Contents, and Answer endpoints with Research (asynchronous deep research), Agent (managed multi-step agents at four effort modes), Monitors (scheduled searches with webhooks), and Websets (curated, enrichable result collections). Customers include Cognition (Devin), HubSpot, Monday, Databricks, AWS, and Cursor; Exa raised a $250M Series C to build the search engine for AIs. Open SDKs in Python and JavaScript, an MCP server, Google Sheets and n8n integrations, and a free tier of 1,000 requests/month round out the surface.

agent native

Reference-quality API operations across every facet — a rich contract, published governance, transparent operations, and machine-readable commercial terms.

Kin Score

API Evangelist profiles Exa the way a machine reads it — 76 machine-readable artifacts across 19 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Exa scores 74.9/100 (exemplar), with a separate agent-readiness read of 78/100 (agent native). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 74.9/100 · exemplar
Contract Quality 17.8 / 25
Developer Ergonomics 14.3 / 20
Commercial Clarity 15.8 / 20
Operational Transparency 8.9 / 13
Governance 8.8 / 12
Discoverability 9.3 / 10
Agent readiness — 78/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3

How we profile Exa

Each block below is one kind of artifact we hold for Exa. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 19

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

Individual APIs this provider publishes, each with its own machine-readable definition.

Exa Agent API

The Agent API from Exa — 4 operation(s) for agent.

Exa Answer API

The Answer API from Exa — 1 operation(s) for answer.

Exa Contents API

The Contents API from Exa — 1 operation(s) for contents.

Exa Enrichments API

The Enrichments API from Exa — 3 operation(s) for enrichments.

Exa Events API

The Events API from Exa — 2 operation(s) for events.

Exa Imports API

The Imports API from Exa — 2 operation(s) for imports.

Exa Items API

The Items API from Exa — 2 operation(s) for items.

Exa Monitors API

The Monitors API from Exa — 6 operation(s) for monitors.

Exa Monitors Runs API

The Monitors Runs API from Exa — 2 operation(s) for monitors runs.

Exa Research API

The Research API from Exa — 2 operation(s) for research.

Exa Runs API

The Runs API from Exa — 2 operation(s) for runs.

Exa Search API

The Search API from Exa — 1 operation(s) for search.

Exa Searches API

The Searches API from Exa — 3 operation(s) for searches.

Exa Team Management API

The Team Management API from Exa — 3 operation(s) for team management.

Exa Teams API

The Teams API from Exa — 1 operation(s) for teams.

Exa Webhooks API

The Webhooks API from Exa — 2 operation(s) for webhooks.

Exa Webhooks Attempts API

The Webhooks Attempts API from Exa — 1 operation(s) for webhooks attempts.

Exa Websets API

The Websets API from Exa — 3 operation(s) for websets.

Exa Websets Preview API

The Websets Preview API from Exa — 1 operation(s) for websets preview.

Scroll within the panel for all 19 ·

Postman Collections 7

A runnable collection turns the contract into something a developer can execute in seconds. We profile them because the fastest way to trust an API is to make a real call against it.

Ready-to-run Postman collections for exercising this provider's APIs.

Scroll within the panel for all 7 ·

Open Collections 7

Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Exa Agent API

OPEN COLLECTION

Exa Monitors API

OPEN COLLECTION

Exa Research API

OPEN COLLECTION

Exa Search API

OPEN COLLECTION

Exa Team API

OPEN COLLECTION

Team Management API

OPEN COLLECTION

Exa Websets API

OPEN COLLECTION

Scroll within the panel for all 7 ·

Arazzo Workflows 11

Real integrations are rarely a single call. Arazzo describes the multi-step sequences — auth, then create, then confirm — so both a human and an agent can follow the choreography, not just the endpoints.

Multi-step API workflows described with the Arazzo specification.

Exa Answer with Deep Sources

Get a cited answer to a question, then deep-fetch the top citation.

ARAZZO

Exa Create and Poll Research

Kick off an Exa research task and poll until it completes, then read output.

ARAZZO

Exa Create Webset and List Items

Create a Webset from a search, poll until it settles, then list its items.

ARAZZO

Exa Enrich Webset and Poll

Build a Webset, then add an enrichment column and poll until it completes.

ARAZZO

Exa Expand Webset Search

Build a Webset, add a follow-up search, and poll it to completion.

ARAZZO

Exa Find Similar and Fetch Contents

Find pages similar to a seed result, then fetch their full contents.

ARAZZO

Exa Preview then Create Webset

Preview how a query decomposes, then commit it to a real Webset.

ARAZZO

Exa Resume Latest Research

Find the most recent research task and poll it until it completes.

ARAZZO

Exa Scout then Research

Scout sources with a quick search, then launch and poll a deep research task.

ARAZZO

Exa Search and Fetch Contents

Run an Exa neural search and pull full page contents for the top result.

ARAZZO

Exa Webset Item Deep Contents

Build a Webset, list its items, and deep-fetch the top item's contents.

ARAZZO

Scroll within the panel for all 11 ·

MCP Servers 1

Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.

Model Context Protocol servers that expose these APIs to AI agents.

exa-ai-mcp.yml

MCP SERVER

Pricing Plans 1

Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.

Published pricing tiers and plan structures.

Exa Ai Plans Pricing

8 plans

PLANS

Rate Limits 1

Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.

Documented rate limits and quota policies.

Exa Ai Rate Limits

6 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.

Cost, billing, and metering signals for API financial operations.

Features 19

The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.

Notable capabilities this provider offers.

Neural and keyword web search built specifically for LLMs and agents
Token-efficient highlights — claimed ~90% reduction in LLM context cost vs full page text
Latency tiers — fast (~180ms), auto (~1s), deep (~10s)
Verticals — Code, Companies, News, People, Research, Financials
Structured outputs with web-grounded citations
Contents API for full-page text, summaries, highlights, and subpages
Answer endpoint — LLM-grounded answers with sources, streaming optional
Research API — asynchronous deep-research tasks
Agent API — managed research agents with low/medium/high/x-high effort modes
Monitors API — scheduled searches with webhook notifications
Websets — curated, enrichable result collections with imports and webhooks
Webhooks for Webset events, enrichments, monitor runs, and agent runs
Team Management API with per-key rate limits, budgets, and usage reporting
Official SDKs in Python (exa-py) and JavaScript / TypeScript (exa-js)
Exa MCP server and Websets MCP server for agent tool integration
n8n node, Google Sheets extension, Zed editor extension
Free tier — 1,000 requests/month
Pay-as-you-go from $7 per 1,000 search requests; $1 per 1,000 content pages
$1,000 startup/education grant program

Scroll within the panel for all 19 ·

Semantic Vocabularies 1

JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.

JSON-LD contexts and semantic vocabularies used across these APIs.

Exa Ai Context

0 classes · 12 properties

JSON-LD

Spectral Rules 1

Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.

Exa API Rules

5 rules · 3 warnings

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.

Standalone JSON Schema definitions for this provider's data models.

Exa Search Result

13 properties

JSON SCHEMA

Exa Webset Item

9 properties

JSON SCHEMA

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Exa Ai Authentication

apiKey/http · 2 schemes

SECURITY

Exa Ai Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Exa Ai Vulnerability Disclosure

disclosure policy published

SECURITY

Exa Ai Trust Center

SOC 2 Type II, HIPAA, GDPR

SECURITY

Agentic Access 1

An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.

Recommended x-agentic-access execution contracts for AI agents.

Exa Ai Agentic Access

66 operations · 36 acting · 1 human-in-the-loop

66 operations · 36 acting

AGENTIC

Resources

Every other property we hold for Exa — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Get Started 4

Portal, sign-up, and the first successful call

Documentation 4

Reference material describing how the API behaves

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

Company 2

The organization behind the API

Other 7

Properties that don't map to a standard resource type

Scroll within the panel for all 7 ·

← All providers · Data indexed from github.com/api-evangelist/exa-ai · machine-readable index on apis.io