Crawl4AI

Crawl4AI is an open-source, Apache-2.0 web crawler and scraper built to turn any URL into clean, LLM-ready data — Markdown, typed JSON, screenshots, PDFs, or a map of every URL on a domain. Operated by CONTEXT4AI PTE LTD of Singapore and created by Hossein Tohidi (@unclecode), the project pairs a 79,000-star Python library and self-hostable Docker API server with a hosted Cloud API at gate.crawl4ai.com that serves scrape, search, answer, extract and bulk-job endpoints from three regions, plus a live remote MCP server that exposes the same capabilities to agents as five native tools. Self-hosting is free and unmetered; the hosted tier is free at 5,000 searches and 1,000 scrapes a month.

Crawl4AI publishes 4 API contracts indexed on the APIs.io network, including Crawl API, and 3 more. Tagged areas include AI Automation, Web Crawling, Web Scraping, Data Extraction, and Search.

The Crawl4AI catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Crawl4AI’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, pricing, signup flow, and 35 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

70.3/100 exemplar ▬ flat Agent 39/100 agent ready Front door AI 6/6 dominant Heartbeat 50/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumFree trial⚡ Free to try

1 published contract 1 MCP Servers 2 Agent Skills

AI Automation Web Crawling Web Scraping Data Extraction Search LLM Tooling Agents MCP Open Source

What people ask Crawl4AI 1

The questions people put to an LLM, and the jobs they hand an agent, that Crawl4AI's APIs answer — each one linked to the operation that does it. Generated by API Evangelist

Crawl4AI Crawl API Start a crawl job for a list of URLs “How do I kick off a Crawl4AI job to scrape a batch of web pages?” Check a crawl job's status and results “Is my crawl job finished yet, and where do I get the scraped results?”

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 70.3/100 · exemplar

Contract Quality 8.9 / 19

Developer Ergonomics 12.9 / 15

Access Clarity 11.8 / 15

Operational Transparency 9.5 / 10

Contract Governance 2.9 / 9

Discoverability 5.6 / 8

Regulatory Posture 4.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 39/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

6 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 47.3 — up to +13.2 composite points
Contract Governance scores 31.8 — up to +8.2 composite points
Access Clarity scores 78.9 — up to +4.2 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/crawl4ai/apis.yml: open an issue on github.com/api-evangelist/crawl4ai to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 3

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

Agent Skills

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 4

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

Crawl4AI Cloud API

The hosted Crawl4AI API. One key, plain JSON, one fast endpoint per job: POST /scrape turns a URL into clean Markdown or HTML, GET /search runs a browser-free multi-engine web s...

Crawl4AI Cloud v1 API

The versioned Crawl4AI cloud surface the first-party Cloud SDKs and the Claude Code plugin call. Covers POST /v1/markdown, /v1/screenshot (screenshot and PDF capture), /v1/extra...

Crawl4AI Self-Hosted API

The Apache-2.0 API server that ships inside the crawl4ai project and the unclecode/crawl4ai Docker image, serving on port 11235 on infrastructure the operator runs. Exposes /cra...

Crawl4AI Crawl API

The Crawl API from Crawl4AI — 2 operation(s) for crawl.

MCP Servers 1

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

Crawl4AI Cloud MCP Server

Crawl4AI ships a hosted, streamable-HTTP MCP server at https://gate.crawl4ai.com/mcp that exposes the Cloud API as five native agent tools. tools/list answers ANONYMOUSLY — the ...

MCP SERVER

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

crawl4ai-bulk-crawl-job

AGENT SKILL

crawl4ai

AGENT SKILL

Crawl4AI API pricing

Prices published by Crawl4AI, read 2026-10-28 from gate.crawl4ai.com/#pricing.

Plan	Price
Free	$0 · no card Includes: 1,000 credits every month, 10 a minute, 2 at a time.
Starter	$8.33 a month Includes: 10,000 credits a month, 120 a minute, 10 at a time. billed $100 a year
Builder	$82.50 a month Includes: 125,000 credits a month, 600 a minute, 20 at a time. billed $990 a year
Scale	$415.83 a month Includes: 750,000 credits a month, 1,500 a minute, 50 at a time. billed $4,990 a year
Enterprise	Let's talk Includes: Volume, regions, SLA.

Plan details, limits and sources →

Rate limits

Free per-minute request rate: 10 requests per minute
Free daily crawl limit: 100 requests per day
Pro per-minute request rate: 100 requests per minute

All 8 limits →

Billed by: credits · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Crawl4Ai Plans Pricing

5 plans

PLANS

Crawl4Ai Price Estimates

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Crawl4Ai Rate Limits

8 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Crawl4AI

SLA

FinOps 1

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

Crawl4Ai Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Crawl4Ai Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Crawl4AI API Rules

35 rules · 33 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 2

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Crawl4Ai Crawl Api Phrasing Overlay

3 actions · phrasing · crawl4ai-crawl-api-openapi.yml

GENERATED

Crawl4Ai Platform Gateway Overlay

6 actions · update · crawl4ai-platform-gateway-openapi.json

GENERATED

Security Posture 3

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

Crawl4Ai Authentication

3 schemes

SECURITY

Crawl4Ai Domain Security

TLSv1.3 · DMARC

SECURITY

Crawl4Ai Vulnerability Disclosure

no policy recorded

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

SignUp

Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

OpenAPI

OpenAPI

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

AgentSkill

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conventions

Conformance

Lifecycle

Webhooks

DataModel

Build 6

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

SourceCode

ToolCrosswalk

Packages

SDKs

CLI

Access & Security 4

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 6

Status, limits, changes, and where to get help

Support

Roadmap

StatusPage

RateLimits

Deprecation

ChangeLog

Commercial 6

Pricing, plans, and the legal terms of use

License

Pricing

TermsOfService

PrivacyPolicy

Plans

FinOps

Company 3

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: crawl4ai
name: Crawl4AI
description: Crawl4AI is an open-source, Apache-2.0 web crawler and scraper built to turn any URL into clean, LLM-ready data
  — Markdown, typed JSON, screenshots, PDFs, or a map of every URL on a domain. Operated by CONTEXT4AI PTE LTD of Singapore
  and created by Hossein Tohidi (@unclecode), the project pairs a 79,000-star Python library and self-hostable Docker API
  server with a hosted Cloud API at gate.crawl4ai.com that serves scrape, search, answer, extract and bulk-job endpoints from
  three regions, plus a live remote MCP server that exposes the same capabilities to agents as five native tools. Self-hosting
  is free and unmetered; the hosted tier is free at 5,000 searches and 1,000 scrapes a month.
type: Index
deliveryModel:
  model: open-source-and-hosted
  open_source: true
  commercial: true
  callable_host: true
  label: Apache-2.0 open source, plus a hosted commercial API
  confidence: high
  source:
  - https://pypi.org/project/crawl4ai/
  - https://gate.crawl4ai.com/
  - https://gate.crawl4ai.com/legal/#terms
  generated: '2026-08-29'
  method: searched
accessModel:
  pricing: freemium
  onboarding: self-service
  trial: true
  try_now: true
  public: true
  label: Freemium — instant 24-hour key, no signup; $7/mo Supporter tier
  confidence: high
  source:
  - https://gate.crawl4ai.com/ (#pricing)
  - https://gate.crawl4ai.com/llms.txt
  generated: '2026-08-29'
  method: searched
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/crawl4ai.png
x-docs-platform: mkdocs
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-24
tags:
- AI Automation
- Web Crawling
- Web Scraping
- Data Extraction
- Search
- LLM Tooling
- Agents
- MCP
- Open Source
tags_raw:
- AI Automation
- Web Crawling
- Web Scraping
- Data Extraction
- Search
- LLM Tooling
- Agents
- MCP
- Open Source
- Open-Source
url: https://raw.githubusercontent.com/api-evangelist/crawl4ai/refs/heads/main/apis.yml
created: '2026-03-27'
modified: '2026-09-16'
specificationVersion: '0.23'
apis:
- aid: crawl4ai:crawl4ai
  name: Crawl4AI Cloud API
  description: 'The hosted Crawl4AI API. One key, plain JSON, one fast endpoint per job: POST /scrape turns a URL into clean
    Markdown or HTML, GET /search runs a browser-free multi-engine web search, GET /answer returns a direct answer with sources
    (experimental), POST /extract pulls typed JSON out of a page with an instruction and/or JSON Schema, POST /scrape/batch
    streams up to 50 URLs as NDJSON, and POST /scrape/jobs drains lists of up to 10,000 URLs in the background. Requests route
    to the nearest of three regions (EU, Singapore, US). No OpenAPI is published for this surface.'
  humanURL: https://gate.crawl4ai.com/docs
  baseURL: https://gate.crawl4ai.com
  tags:
  - AI Automation
  - Web Crawling
  - Search
  properties:
  - type: Documentation
    url: https://gate.crawl4ai.com/docs
  - type: APIReference
    url: https://gate.crawl4ai.com/docs
  - type: LLMsTxt
    url: llms/crawl4ai-llms.txt
  - type: MCPServer
    url: mcp/crawl4ai-mcp.yml
  - type: ToolCrosswalk
    url: mcp/crawl4ai-tool-crosswalk.yml
- aid: crawl4ai:crawl4ai-v1
  name: Crawl4AI Cloud v1 API
  description: The versioned Crawl4AI cloud surface the first-party Cloud SDKs and the Claude Code plugin call. Covers POST
    /v1/markdown, /v1/screenshot (screenshot and PDF capture), /v1/extract (auto, LLM or reusable CSS schema), /v1/map (domain
    URL discovery with BM25 relevance scoring), /v1/crawl/site (whole-site crawl up to 1,000 pages) and /v1/crawl (the full
    40-field CrawlerRunConfig), each with an async variant, a job API and webhook callbacks. Authenticated with X-API-Key.
    No OpenAPI is published; the reference lives in the provider's own agent skill.
  humanURL: https://github.com/unclecode/crawl4ai-cloud-sdk/blob/main/python/claude-plugin/skills/crawl4ai/reference/endpoints.md
  baseURL: https://api.crawl4ai.com
  tags:
  - AI Automation
  - Web Crawling
  - Data Extraction
  properties:
  - type: APIReference
    url: skills/reference/crawl4ai-endpoints.md
  - type: ErrorCatalog
    url: skills/reference/crawl4ai-errors.md
  - type: SourceCode
    url: https://github.com/unclecode/crawl4ai-cloud-sdk
- aid: crawl4ai:crawl4ai-docker
  name: Crawl4AI Self-Hosted API
  description: 'The Apache-2.0 API server that ships inside the crawl4ai project and the unclecode/crawl4ai Docker image,
    serving on port 11235 on infrastructure the operator runs. Exposes /crawl, /crawl/stream, /crawl/job, /md, /llm, /screenshot,
    /pdf, /html, /token, /health, /artifacts/{id}, /hooks/info, a monitoring API and an MCP bridge at /mcp/sse, /mcp/ws and
    /mcp/schema. Since 0.9.0 it is secure-by-default: authentication on, loopback bind without a token, and a strict request
    trust boundary.'
  humanURL: https://docs.crawl4ai.com/core/self-hosting/
  baseURL: http://{host}:11235
  baseURLNote: Templated on purpose — this server runs on the customer's own host. Crawl4AI operates no instance of it.
  tags:
  - AI Automation
  - Web Crawling
  - Open Source
  tags_raw:
  - AI Automation
  - Web Crawling
  - Open Source
  - Open-Source
  properties:
  - type: Documentation
    url: https://docs.crawl4ai.com/core/self-hosting/
  - type: SourceCode
    url: https://github.com/unclecode/crawl4ai/tree/main/deploy/docker
  - type: ContainerImage
    url: https://hub.docker.com/r/unclecode/crawl4ai
- aid: crawl4ai:crawl4ai-crawl-api
  name: Crawl4AI Crawl API
  description: The Crawl API from Crawl4AI — 2 operation(s) for crawl.
  humanURL: https://gate.crawl4ai.com/docs
  baseURL: https://gate.crawl4ai.com
  tags:
  - Crawl
  properties:
  - type: OpenAPI
    url: openapi/crawl4ai-crawl-api-openapi.yml
common:
- type: License
  name: Apache-2.0
  url: https://github.com/unclecode/crawl4ai-cloud-sdk/blob/main/LICENSE
- type: Website
  url: https://crawl4ai.com
- type: DeveloperPortal
  url: https://gate.crawl4ai.com/
- type: Documentation
  url: https://docs.crawl4ai.com
- type: APIReference
  url: https://gate.crawl4ai.com/docs
- type: GettingStarted
  url: https://docs.crawl4ai.com/core/quickstart/
- type: Blog
  url: https://docs.crawl4ai.com/blog/
- type: Support
  url: https://discord.gg/jP8KfhDhyN
- type: GitHubOrganization
  url: https://github.com/unclecode
- type: SourceCode
  url: https://github.com/unclecode/crawl4ai
- type: Roadmap
  url: https://github.com/unclecode/crawl4ai/blob/main/ROADMAP.md
- type: LinkedIn
  url: https://www.linkedin.com/company/crawl4ai
- type: Integrations
  url: https://docs.crawl4ai.com/marketplace/
- type: Pricing
  url: https://gate.crawl4ai.com/#pricing
- type: SignUp
  url: https://gate.crawl4ai.com/dashboard/
- type: TermsOfService
  url: https://gate.crawl4ai.com/legal/#terms
- type: PrivacyPolicy
  url: https://gate.crawl4ai.com/legal/#privacy
- type: StatusPage
  url: https://unclecode.github.io/crawl4ai-status/
- type: Plans
  url: plans/crawl4ai-plans-pricing.yml
- type: RateLimits
  url: rate-limits/crawl4ai-rate-limits.yml
- type: FinOps
  url: finops/crawl4ai-finops.yml
- type: OpenAPI
  url: openapi/_original/crawl4ai-platform-gateway-openapi.json
- type: Overlay
  url: overlays/crawl4ai-platform-gateway-overlay.yaml
- type: LLMsTxt
  url: llms/crawl4ai-llms.txt
- type: MCPServer
  url: mcp/crawl4ai-mcp.yml
- type: ToolCrosswalk
  url: mcp/crawl4ai-tool-crosswalk.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Packages
  url: packages/crawl4ai-packages.yml
- type: SDKs
  url: packages/crawl4ai-packages.yml
- type: CLI
  url: cli/crawl4ai-cli.yml
- type: Authentication
  url: authentication/crawl4ai-authentication.yml
- type: ErrorCatalog
  url: errors/crawl4ai-problem-types.yml
- type: Conventions
  url: conventions/crawl4ai-conventions.yml
- type: Conformance
  url: conformance/crawl4ai-conformance.yml
- type: Lifecycle
  url: lifecycle/crawl4ai-lifecycle.yml
- type: Deprecation
  url: lifecycle/crawl4ai-lifecycle.yml
- type: ChangeLog
  url: changelog/crawl4ai-changelog.yml
- type: Webhooks
  url: asyncapi/crawl4ai-webhooks.yml
- type: Sandbox
  url: sandbox/crawl4ai-sandbox.yml
- type: DataModel
  url: data-model/crawl4ai-data-model.yml
- type: DomainSecurity
  url: security/crawl4ai-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/crawl4ai-vulnerability-disclosure.yml
- type: Security
  url: security/crawl4ai-vulnerability-disclosure.yml
integrations:
- name: Crawl4AI
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-29'
  status: enriched
  artifacts_added: 27
  pass: local-v1

Crawl4AI API — frequently asked questions

Does Crawl4AI have an API?

Yes. APIs.io lists 4 APIs from Crawl4AI, including Crawl4AI Cloud API, Crawl4AI Cloud v1 API and Crawl4AI Self-Hosted API, and 1 more.

Is there an OpenAPI specification for the Crawl4AI API?

Yes. APIs.io indexes 1 OpenAPI specification for Crawl4AI, each linked for download from this page.

How do I authenticate with the Crawl4AI API?

Crawl4AI uses bearer-token authentication (3 schemes). The details are profiled on APIs.io as Crawl4Ai Authentication.

How much does the Crawl4AI API cost?

Crawl4AI publishes its prices; its Free plan is $0 · no card as of 2026-10-28. APIs.io lists 5 pricing plans for Crawl4AI, with each plan's price, limits and inclusions under Pricing on this page.

Does Crawl4AI have an MCP server?

Yes. APIs.io lists 1 MCP server for Crawl4AI: Crawl4AI ships a hosted, streamable-HTTP MCP server at https://gate.crawl4ai.com/mcp that exposes the Cloud API as five native agent tools. tools/list answers ANONYMOUSLY — the full tool set with comp

Is the Crawl4AI API ready for AI agents?

Crawl4AI has a Kin Score of 70.3 out of 100 (exemplar) and an Agent Readiness score of 38.7 (agent-ready), scored by API Evangelist on 2026-11-06.

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