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Idler

Builds RL environments from real production work

App replicasDomain expertsCoding and SWETool use

Idler builds RL environments from real production work. ShelfLife is a digital twin of a live e-commerce company with about 200 environments and a public leaderboard, and CorpLaw is built from a law firm’s anonymized data. Private collections cover long-horizon SWE, cybersecurity and terminal agents on request.

Best for: Environments derived from real business operations rather than synthetic tasks

$9M seed reported (Aug 2026), unconfirmed

  • ✓ Bespoke builds
  • – Platform or hub
  • – Open source
  • – Publishes prices
Visit Idler

Facts checked November 9, 2026 against the sources listed below. Idler does not pay to appear here.

1 Legal nameIdler
2 HeadquartersSan Francisco, CA
3 Founded2025
4 Team12 (YC profile)
5 DeliveryBespoke builds, Catalog licensing
6 ExclusivityNot disclosed
7 Customers and partnersNot disclosed
8 Published pricesNot disclosed

Worth knowing before you sign

  • Seed round not confirmed by the company or by Paradigm
  • No named customers
  • Empty blog, no papers or repos, no SOC 2 or security page

Go to Idler's site

Sources

  1. Idler homepage
  2. Y Combinator profile
  3. Idler collections
  4. Runtime Wire: seed report
  5. The SaaS News: seed report
  6. Paradigm portfolio
  7. rl-list profile

Work at Idler? Send corrections with a source to editors@toprlenvironments.com. We fix verified errors within five business days.

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