# Blekko

**Canonical:** https://apis.io/providers/blekko/  
**APIs profiled:** 0

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).

## Kin Score — 5.0 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 5.0).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Tags

Company, Search, Search Engines, Web Search, Discovery, Defunct, Acquired

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/blekko/). Scores are computed from the provider's own public artifacts under a published rubric.