# LeanMarket

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

LeanMarket was a mobile advertising technology company headquartered in Mountain View, California, that brought real-time bidding (RTB) display advertising to small and mid-sized advertisers through a self-serve platform. Its pitch was transparency and operator control: advertisers could pull reports showing in-depth data on every mobile app and mobile website their ads appeared in — in contrast to blind ad networks — and could tweak, optimize and scale campaigns themselves through a self-serve interface with up-to-the-second reporting, rather than waiting on an account manager to make changes. The company went through the Y Combinator Summer 2012 (S12) batch and appears on the Andreessen Horowitz investment list, with seed participation also reported from Initialized Capital. LeanMarket is defunct and operates no live product, developer portal or API today; this profile is retained for historical and network completeness.

## Kin Score — 5.0 / 100 (minimal)

Scored 2026-08-21 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, Advertising, Mobile Advertising, AdTech, Real-Time Bidding, Programmatic Advertising, Display Advertising, Marketing, Y Combinator, Defunct

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