DuckDuckGo

DuckDuckGo is an independent online-privacy company best known for its tracker-free search engine and the DuckDuckGo Browser (iOS, Android, macOS, Windows). It operates the public Instant Answer API at api.duckduckgo.com (free, JSON/XML), the Duck.ai anonymous AI-chat proxy at duck.ai (routes to Anthropic Claude, OpenAI GPT, Meta Llama, Mistral models without storing or training on prompts), the Tracker Radar open dataset (CC BY-NC-SA), Email Protection (@duck.com forwarding addresses), and Privacy Pro (VPN + Personal Information Removal + Identity Theft Restoration).

DuckDuckGo publishes 2 APIs on the APIs.io network: Bangs API and Instant Answers API. Tagged areas include Search, Privacy, Browser, AI Chat, and Email Protection.

The DuckDuckGo catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

DuckDuckGo’s developer surface includes developer portal, engineering blog, and 19 more developer resources.

🌐 Visit website 📡 Source on GitHub

45.3/100 developing ▬ flat Agent 29/100 agent aware Full breakdown ↓
scored 2026-08-21 · rubric v0.12.0

AccessFreemium

5 APIs

Search Privacy Browser AI Chat Email Protection VPN Trackers Identity

Kin Score

Kin Score How this is scored →
scored 2026-08-21 · rubric v0.12.0

Composite quality — 45.3/100 · developing

Contract Quality 15.6 / 25

Developer Ergonomics 2.4 / 20

Access Clarity 10.0 / 20

Operational Transparency 6.5 / 13

Contract Governance 3.5 / 12

Discoverability 7.4 / 10

Agent readiness — 29/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/duckduckgo: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 5

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

Rate Limits 1

Documented rate limits and quota policies.

Duckduckgo Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

JSON Schema 2

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

Examples 4

Example request and response payloads for these APIs.

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LlmsText

LlmsText

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Vocabulary

Vocabulary

JSONLD

JSONLD

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

SourceCode

SourceCode

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

IssueTracker

IssueTracker

Releases

Releases

RateLimits

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

PrivacyPro

PrivacyPolicy

Plans

FinOps

Company 3

The organization behind the API

Website

Website

Blog

Blog

BlogRSS

BlogRSS

Other 3

Properties that don't map to a standard resource type

DuckDuckGo Browser

Browser

Duck.ai

AIChat

EmailProtection

EmailProtection

Source (apis.yml)

aid: duckduckgo
url: https://raw.githubusercontent.com/api-evangelist/duckduckgo/refs/heads/main/apis.yml
name: DuckDuckGo
kind: company
description: DuckDuckGo is an independent online-privacy company best known for its tracker-free search engine and the DuckDuckGo
  Browser (iOS, Android, macOS, Windows). It operates the public Instant Answer API at api.duckduckgo.com (free, JSON/XML),
  the Duck.ai anonymous AI-chat proxy at duck.ai (routes to Anthropic Claude, OpenAI GPT, Meta Llama, Mistral models without
  storing or training on prompts), the Tracker Radar open dataset (CC BY-NC-SA), Email Protection (@duck.com forwarding addresses),
  and Privacy Pro (VPN + Personal Information Removal + Identity Theft Restoration).
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/duckduckgo.png
tags:
- Search
- Privacy
- Browser
- AI Chat
- Email Protection
- VPN
- Trackers
- Identity
created: '2026-05-23'
modified: '2026-05-23'
specificationVersion: '0.23'
apis:
- aid: duckduckgo:duck-ai
  name: Duck.ai Anonymous AI Chat
  humanURL: https://duck.ai/
  baseURL: https://duck.ai
  tags:
  - AI Chat
  - LLM Proxy
  - Privacy
  - Anonymous
  description: Duck.ai is DuckDuckGo's anonymizing proxy in front of third-party LLMs. Free tier currently includes Anthropic
    Claude 4.5 Haiku, Meta Llama 4 Scout, Mistral Small 3 24B, OpenAI GPT-4o mini / GPT-5 mini / gpt-oss-120b. Duck.ai Plus
    adds GPT-4o, GPT-5.2, Claude Sonnet 4.5, Llama 4 Maverick. Duck.ai Pro adds Claude Opus 4.6, higher reasoning effort and
    2x usage limits. DuckDuckGo strips IP / identifiers before forwarding to upstream model providers and does not retain
    prompts or train on them. There is no public REST API; access is via the web UI and the in-browser integration in DuckDuckGo
    Browser.
  properties:
  - type: Documentation
    url: https://duckduckgo.com/duckduckgo-help-pages/duckai/
  - type: Portal
    url: https://duck.ai/
  - type: Pricing
    url: plans/duckduckgo-plans-pricing.yml
- aid: duckduckgo:tracker-radar
  name: DuckDuckGo Tracker Radar Dataset
  humanURL: https://github.com/duckduckgo/tracker-radar
  baseURL: https://raw.githubusercontent.com/duckduckgo/tracker-radar/main/
  tags:
  - Trackers
  - Open Data
  - Privacy Dataset
  - JSON
  description: Tracker Radar is the open dataset that powers DuckDuckGo's tracker and fingerprinting protection. It is a JSON
    corpus of the most common third-party domains on the web, with metadata covering behavior, classification, ownership,
    prevalence, fingerprinting, cookies, privacy policies, and performance. Distributed under Creative Commons BY-NC-SA 4.0
    (commercial licensing available on request). Files are addressable as raw JSON under /domains in the GitHub repo, so it
    is consumable as a static read-only "data API" over HTTPS.
  properties:
  - type: SourceCode
    url: https://github.com/duckduckgo/tracker-radar
  - type: License
    url: https://creativecommons.org/licenses/by-nc-sa/4.0/
  - type: JSONSchema
    url: json-schema/tracker-radar-domain-schema.json
  - type: Examples
    url: examples/tracker-radar-domain-example.json
- aid: duckduckgo:bang-redirector
  name: DuckDuckGo !Bang Redirector
  humanURL: https://duckduckgo.com/bangs
  baseURL: https://duckduckgo.com/
  tags:
  - Search
  - Redirect
  - Bang
  description: The !bang system - in place since 2008 and now spanning thousands of destinations - lets a query like "!w filter
    bubble" 302-redirect to the destination site's own search (Wikipedia in that example). When called via the Instant Answer
    API, a bang query returns a Redirect field with the target URL rather than performing the redirect, so it can be used
    programmatically as a normalized "search-on-other-site" router.
  properties:
  - type: Documentation
    url: https://duckduckgo.com/bangs
  - type: Submission
    url: https://duckduckgo.com/newbang
- aid: duckduckgo:duckduckgo-bangs-api
  name: DuckDuckGo Bangs API
  description: Resolve !bang queries to redirect URLs.
  humanURL: https://duckduckgo.com/api
  baseURL: https://api.duckduckgo.com
  tags:
  - Bangs
  properties:
  - type: OpenAPI
    url: openapi/duckduckgo-bangs-api-openapi.yml
  - type: Documentation
    url: https://duckduckgo.com/api
  - type: Examples
    url: examples/
  - type: SpectralRules
    url: rules/instant-answer-rules.yml
  - type: JSONSchema
    url: json-schema/instant-answer-response-schema.json
  - type: JSONLD
    url: json-ld/duckduckgo-context.jsonld
  - type: Pricing
    url: https://duckduckgo.com/api
- aid: duckduckgo:duckduckgo-instant-answers-api
  name: DuckDuckGo Instant Answers API
  description: Zero-click answers, abstracts, definitions and disambiguations.
  humanURL: https://duckduckgo.com/api
  baseURL: https://api.duckduckgo.com
  tags:
  - Instant Answers
  properties:
  - type: OpenAPI
    url: openapi/duckduckgo-instant-answers-api-openapi.yml
  - type: Documentation
    url: https://duckduckgo.com/api
  - type: Examples
    url: examples/
  - type: SpectralRules
    url: rules/instant-answer-rules.yml
  - type: JSONSchema
    url: json-schema/instant-answer-response-schema.json
  - type: JSONLD
    url: json-ld/duckduckgo-context.jsonld
  - type: Pricing
    url: https://duckduckgo.com/api
common:
- type: IssueTracker
  url: https://github.com/duckduckgo/tracker-radar/issues
- type: Releases
  url: https://github.com/duckduckgo/tracker-radar/releases
- type: VulnerabilityDisclosure
  url: security/duckduckgo-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/duckduckgo-domain-security.yml
- type: Website
  url: https://duckduckgo.com/
- type: Portal
  url: https://duckduckgo.com/duckduckgo-help-pages/
- type: Blog
  url: https://spreadprivacy.com/
- type: BlogRSS
  url: https://spreadprivacy.com/rss/
- type: GitHubOrganization
  url: https://github.com/duckduckgo
- type: SourceCode
  url: https://github.com/duckduckgo
- type: Browser
  title: DuckDuckGo Browser
  url: https://duckduckgo.com/app
- type: AIChat
  title: Duck.ai
  url: https://duck.ai/
- type: EmailProtection
  url: https://duckduckgo.com/email/
- type: PrivacyPro
  url: https://duckduckgo.com/privacy-pro
- type: PrivacyPolicy
  url: https://duckduckgo.com/privacy
- type: Plans
  url: plans/duckduckgo-plans-pricing.yml
- type: RateLimits
  url: rate-limits/duckduckgo-rate-limits.yml
- type: FinOps
  url: finops/duckduckgo-finops.yml
- type: Vocabulary
  url: vocabulary/duckduckgo-vocabulary.yml
- type: JSONLD
  url: json-ld/duckduckgo-context.jsonld
- type: LlmsText
  url: https://duck.ai/llms.txt
integrations:
- name: Apple Safari Intelligent Tracking Prevention (uses tracker data feeds)
- name: Mozilla Firefox (DuckDuckGo as default search option)
- name: Brave Browser (DuckDuckGo selectable as default search)
- name: Tor Browser (DuckDuckGo as default search)
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/duckduckgo"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/duckduckgo/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/duckduckgo/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.