HarnessRouter
Not a desktop orchestrator but an infrastructure layer: one OpenAI Responses-compatible API in front of agent harnesses (Codex, Claude Code, Hermes, PI, DeepSeek Harness, custom), with sessions, streaming, file upload/download, cancellation and failure traces. It implements the open Unified Harness Protocol (UHP).
- Two editions (matches the “self-hosted and hosted version” blurb; C tier, community opinion): Community Edition, Apache-2.0, self-hosted via one Docker command (Console, Gateway, Runner; bring your own provider key, no account); and HarnessRouter Cloud, managed serverless execution in isolated sandboxes using the same API. Cloud billing (harnessrouter.ai/pricing, 2026-10-08): usage-based on agent work time and agent memory, plans named Free, Developer, Production, Scale and Enterprise, bring-your-own-keys or the vendor’s keys, model usage passed through at list price with no markup (vendor claim).
- Makers: the YC Launches pages name Kuanze Ma and Richard Song, co-founders, under Epsilla (YC Summer 2023 batch per the YC company profile; HarnessRouter itself has no YC company page, the site says “Backed by Y Combinator”). Timeline from YC Launches: Cloud launch post 2026-07-23; Community Edition and UHP open-sourcing post 2026-08-17. Repo: github.com/HarnessRouter/harnessrouter (created 2026-08-09, Apache-2.0, about 2.9k stars, 295 forks, release v0.32.3 on 2026-10-08; GitHub API). Several unrelated forks exist (codehornets, kuishou68, thigas88).
- Use: for embedding coding agents in your own product rather than supervising them yourself.
Open items
- Plan amounts not recorded here by design. Epsilla relationship beyond “under Epsilla” (ownership, whether HarnessRouter is a separate company): not stated. “C tier” is community opinion.
Sources
- https://github.com/HarnessRouter/harnessrouter (re-fetched 2026-10-07; licence Apache-2.0, two editions, UHP, 660 commits confirmed)
- https://harnessrouter.ai/ and /pricing , https://api.github.com/repos/HarnessRouter/harnessrouter (+ /releases) , https://www.ycombinator.com/launches/RpL-harnessrouter-bring-the-world-s-best-ai-agents-into-your-app-with-one-api , https://www.ycombinator.com/companies/epsilla (all fetched 2026-10-08)
- https://www.ycombinator.com/launches/Sv6-harnessrouter-open-sourcing-the-world-s-first-unified-interface-for-agent-harnesses-and-the-unified-harness-protocol (2026-10-07; founders Kuanze Ma and Richard Song, Epsilla, Apache-2.0 confirmed)