OpenHarness
PulseGate's liveness check found it on 3 Oct 2026; it is registered on GitHub and has been in the index since 16 Jun 2026. How this is checked
OpenHarness is an open-source toolkit designed for building AI agents in code, offering developers composable and stateless primitives to create agent harnesses similar to Claude Code-like products. It provides a TypeScript SDK that enables full control over agent behavior, message history, and state management, allowing users to inspect, modify, or share state between agents as plain arrays. The platform is built on top of the Vercel AI SDK, supporting integration with…
Inferred · not functionally tested
Overview
5 featuresPurpose: Providing developers with tools to build, compose, and manage AI agents programmatically.
Inferred · not functionally tested
Audience: Developers building AI agents and automation tools
Inferred · not functionally tested
Functions: agents, workflow_automation, code_generation
Inferred · not functionally tested
Interfaces: API: unknown · MCP: indicated (inferred, not tested) · CLI: indicated (inferred, not tested) · Self-hosting: indicated (inferred, not tested)
Recorded constraints: pricing: open_source · license: MIT · platforms: CLI · deployment: cli, self_hosted
Constraint provenance is unknown; confirm requirements with the publisher.
Record sources: open-harness.dev · github.com. These links do not verify the individual claims.
In the Frameworks & runtimes space, OpenHarness takes a focused approach. Inferred · not functionally tested: Providing developers with tools to build, compose, and manage AI agents programmatically. Inferred · not functionally tested: It is built as an open-source project for developers building AI agents and automation tools. Basis unknown · not verified: The project is open source (MIT). Basis unknown · not verified: OpenHarness is available on the command line, and it can be self-hosted.
OpenHarness first shipped in 2026. The project is developed in the open on GitHub with 569 stars and 92 commits in the last 90 days. Inferred · not functionally tested: Among its 5 catalogued features are composable primitives, subagent hierarchies, and middleware support. Basis unknown · not verified: Catalogued interfaces include an MCP server.
Summary written by a language model from the project’s public pages.
Tasks: Inferred · not functionally tested
- Composable primitives
- Subagent hierarchies
- Middleware support
- Context compaction
- Open source
Topics: Inferred · not functionally tested
Built with & integrations
- Nuxt
- window in the HTML · /_nuxt/ in the HTML · __nuxt in the HTML
- openai
- bgpt- in the HTML
- multiple
- bvercel/ai in the HTML
- Cloudflare
- cf-ray header · cf-cache-status header
Trust & compliance
Indexing history
What PulseGate has recorded for this listing
Frequently asked questions about OpenHarness
- What does OpenHarness do?
- Inferred · not functionally tested: Providing developers with tools to build, compose, and manage AI agents programmatically. It is catalogued under Frameworks & runtimes on PulseGate.
- Who is OpenHarness for?
- Inferred · not functionally tested: OpenHarness is an open-source project built for developers building AI agents and automation tools.
- Is OpenHarness free?
- Basis unknown · not verified: Yes — OpenHarness is open source under the MIT license and free to use.
- What platforms does OpenHarness run on?
- Basis unknown · not verified: OpenHarness runs on the command line. It can also be self-hosted.
- Is OpenHarness still maintained?
- PulseGate's liveness check found it on 3 Oct 2026. Its GitHub repository shows 92 commits in the last 90 days.
- What are alternatives to OpenHarness?
- Similar projects tracked by PulseGate include Harness CLI, HarnessRouter, and Armature Harness.Harness CLIHarnessRouterArmature Harness
- When did OpenHarness launch?
- OpenHarness first shipped in 2026.
- Is OpenHarness open source?
- Basis unknown · not verified: Yes — OpenHarness is open source under the MIT license, developed on GitHub.
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