Blekko

Blekko was a web search engine founded in 2007 by Rich Skrenta, Tom Annau, and Mike Markson and launched publicly in 2010. It was best known for "slashtags" — user-applied /slashtag filters that curated and narrowed search results by category as a spam-resistant alternative to mainstream search engines — and it exposed a developer search API. Blekko was acquired by IBM in March 2015, where its technology and team were folded into the IBM Watson group and its consumer search engine was shut down. This API Evangelist profile is retained as a historical/defunct record; the company no longer operates a live website or public API (blekko.com resolves in DNS but no longer serves HTTPS).

Blekko is profiled on the APIs.io network. Tagged areas include Company, Search, Search Engine, Web Search, and Discovery.

🌐 Visit website 📡 Source on GitHub

6.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanySearchSearch EngineWeb SearchDiscoveryDefunctAcquired

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 6.8/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

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/blekko: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Source (apis.yml)

aid: blekko
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/blekko.png
name: Blekko
description: Blekko was a web search engine founded in 2007 by Rich Skrenta, Tom Annau, and Mike Markson and launched publicly
  in 2010. It was best known for "slashtags" — user-applied /slashtag filters that curated and narrowed search results by
  category as a spam-resistant alternative to mainstream search engines — and it exposed a developer search API. Blekko was
  acquired by IBM in March 2015, where its technology and team were folded into the IBM Watson group and its consumer search
  engine was shut down. This API Evangelist profile is retained as a historical/defunct record; the company no longer operates
  a live website or public API (blekko.com resolves in DNS but no longer serves HTTPS).
url: https://raw.githubusercontent.com/api-evangelist/blekko/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- uncork-capital
x-tier: stub
x-tier-reason: portfolio-lead
x-status: defunct
x-defunct-reason: acquired by IBM (March 2015); consumer search engine shut down and technology folded into IBM Watson
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Search
- Search Engine
- Web Search
- Discovery
- Defunct
- Acquired
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence