SpyFu

SpyFu is a competitive SEO and PPC intelligence platform that gives marketers and agencies programmatic access to competitor keyword rankings, ad history, backlinks, and domain performance data. The REST API covers eight research domains — Domain Stats, Ad History, PPC Research, SEO Research, Competitors, Kombat, Keyword Research, and Ranking History — and is indexed against 1.6 trillion search results, 8 billion keywords, and 152 million domains.

SpyFu publishes 9 APIs on the APIs.io network, including Account API API, Ad History Research API API, Competitors API API, and 6 more. Tagged areas include SEO, PPC, Competitive Intelligence, Keyword Research, and Ad History.

The SpyFu catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

SpyFu’s developer surface includes authentication, documentation, engineering blog, pricing, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

50.4/100 developing ▬ flat Agent 37/100 agent ready Full breakdown ↓
scored 2026-08-10 · rubric v0.9.1

AccessPaidSelf serve

9 APIs

SEOPPCCompetitive IntelligenceKeyword ResearchAd HistoryBacklinksDomain AnalyticsSERP

Kin Score

Kin Score How this is scored →
scored 2026-08-10 · rubric v0.9.1

Composite quality — 50.4/100 · developing

Contract Quality 16.9 / 25

Developer Ergonomics 4.3 / 20

Commercial Clarity 10.0 / 20

Operational Transparency 4.8 / 13

Governance 7.0 / 12

Discoverability 7.4 / 10

Agent readiness — 37/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 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 0 / 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/spyfu: 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 9

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

Rate Limits 1

Documented rate limits and quota policies.

Spyfu Rate Limits

8 limits

RATE LIMITS

FinOps 1

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

JSON Schema 10

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

Scroll for all 10

Examples 9

Example request and response payloads for these APIs.

Scroll for all 9

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: spyfu
name: SpyFu
description: SpyFu is a competitive SEO and PPC intelligence platform that gives marketers and agencies programmatic access
  to competitor keyword rankings, ad history, backlinks, and domain performance data. The REST API covers eight research domains
  — Domain Stats, Ad History, PPC Research, SEO Research, Competitors, Kombat, Keyword Research, and Ranking History — and
  is indexed against 1.6 trillion search results, 8 billion keywords, and 152 million domains.
type: Index
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/spyfu.png
url: https://raw.githubusercontent.com/api-evangelist/spyfu/refs/heads/main/apis.yml
created: 2026-06-13
modified: 2026-06-13
specificationVersion: '0.19'
tags:
- SEO
- PPC
- Competitive Intelligence
- Keyword Research
- Ad History
- Backlinks
- Domain Analytics
- SERP
apis:
- aid: spyfu:spyfu-account-api-api
  name: SpyFu Account API API
  description: The Account API API from SpyFu — 3 operation(s) for account api.
  humanURL: https://developer.spyfu.com/
  baseURL: https://api.spyfu.com
  tags:
  - Account API
  properties:
  - type: OpenAPI
    url: openapi/spyfu-account-api-api-openapi.yml
  - type: Documentation
    url: https://developer.spyfu.com/docs
- aid: spyfu:spyfu-ad-history-research-api-api
  name: SpyFu Ad History Research API API
  description: The Ad History Research API API from SpyFu — 3 operation(s) for ad history research api.
  humanURL: https://developer.spyfu.com/
  baseURL: https://api.spyfu.com
  tags:
  - Ad History Research API
  properties:
  - type: OpenAPI
    url: openapi/spyfu-ad-history-research-api-api-openapi.yml
  - type: Documentation
    url: https://developer.spyfu.com/docs
- aid: spyfu:spyfu-competitors-api-api
  name: SpyFu Competitors API API
  description: The Competitors API API from SpyFu — 3 operation(s) for competitors api.
  humanURL: https://developer.spyfu.com/
  baseURL: https://api.spyfu.com
  tags:
  - Competitors API
  properties:
  - type: OpenAPI
    url: openapi/spyfu-competitors-api-api-openapi.yml
  - type: Documentation
    url: https://developer.spyfu.com/docs
- aid: spyfu:spyfu-domain-stats-api-api
  name: SpyFu Domain Stats API API
  description: The Domain Stats API API from SpyFu — 6 operation(s) for domain stats api.
  humanURL: https://developer.spyfu.com/
  baseURL: https://api.spyfu.com
  tags:
  - Domain Stats API
  properties:
  - type: OpenAPI
    url: openapi/spyfu-domain-stats-api-api-openapi.yml
  - type: Documentation
    url: https://developer.spyfu.com/docs
- aid: spyfu:spyfu-keyword-research-api-api
  name: SpyFu Keyword Research API API
  description: The Keyword Research API API from SpyFu — 7 operation(s) for keyword research api.
  humanURL: https://developer.spyfu.com/
  baseURL: https://api.spyfu.com
  tags:
  - Keyword Research API
  properties:
  - type: OpenAPI
    url: openapi/spyfu-keyword-research-api-api-openapi.yml
  - type: Documentation
    url: https://developer.spyfu.com/docs
- aid: spyfu:spyfu-kombat-api-api
  name: SpyFu Kombat API API
  description: The Kombat API API from SpyFu — 2 operation(s) for kombat api.
  humanURL: https://developer.spyfu.com/
  baseURL: https://api.spyfu.com
  tags:
  - Kombat API
  properties:
  - type: OpenAPI
    url: openapi/spyfu-kombat-api-api-openapi.yml
  - type: Documentation
    url: https://developer.spyfu.com/docs
- aid: spyfu:spyfu-ppc-research-api-api
  name: SpyFu PPC Research API API
  description: The PPC Research API API from SpyFu — 3 operation(s) for ppc research api.
  humanURL: https://developer.spyfu.com/
  baseURL: https://api.spyfu.com
  tags:
  - PPC Research API
  properties:
  - type: OpenAPI
    url: openapi/spyfu-ppc-research-api-api-openapi.yml
  - type: Documentation
    url: https://developer.spyfu.com/docs
- aid: spyfu:spyfu-ranking-history-api-api
  name: SpyFu Ranking History API API
  description: The Ranking History API API from SpyFu — 3 operation(s) for ranking history api.
  humanURL: https://developer.spyfu.com/
  baseURL: https://api.spyfu.com
  tags:
  - Ranking History API
  properties:
  - type: OpenAPI
    url: openapi/spyfu-ranking-history-api-api-openapi.yml
  - type: Documentation
    url: https://developer.spyfu.com/docs
- aid: spyfu:spyfu-seo-research-api-api
  name: SpyFu SEO Research API API
  description: The SEO Research API API from SpyFu — 17 operation(s) for seo research api.
  humanURL: https://developer.spyfu.com/
  baseURL: https://api.spyfu.com
  tags:
  - SEO Research API
  properties:
  - type: OpenAPI
    url: openapi/spyfu-seo-research-api-api-openapi.yml
  - type: Documentation
    url: https://developer.spyfu.com/docs
common:
- type: AgenticAccess
  url: agentic-access/spyfu-agentic-access.yml
- type: DomainSecurity
  url: security/spyfu-domain-security.yml
- type: Authentication
  url: authentication/spyfu-authentication.yml
- type: Website
  url: https://www.spyfu.com/
- type: Documentation
  url: https://developer.spyfu.com/
- type: GitHubOrg
  url: https://github.com/spyfu
- type: LinkedIn
  url: https://www.linkedin.com/company/spyfu
- type: X
  url: https://x.com/spyfu
- type: Blog
  url: https://www.spyfu.com/blog/
- type: Pricing
  url: https://www.spyfu.com/pricing
- type: Plans
  url: plans/spyfu-plans-pricing.yml
- type: RateLimits
  url: rate-limits/spyfu-rate-limits.yml
- type: FinOps
  url: finops/spyfu-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com