Open-source harness
Free
Apache-2.0; provider/infrastructure fees separate
- Included scope
- CLI/MCP; contract; worktrees; verification evidence; dashboard/plugins
Coding-agent isolation and verification harness · Official-source review 2026-10-09
HAR coordinates coding workflows through a repository-owned harness contract, isolated worktrees and launch/verify/teardown stages. Its CLI and MCP expose project checks and evidence artifacts, while Mission Control tracks runs, validations and repositories.
Understand the total cost
Open-source harness
Free
Apache-2.0; provider/infrastructure fees separate
No retained pricing changes yet. A current price alone does not establish a historical trend.
Current official product source read individually; product artwork inspected visually.
Read original source ↗Official product page reviewed for disclosed costs; unverified prices and allowances are identified in the listing.
Read original source ↗Facts apply to the named version and check date. Send a sourced correction if something changed.
Yes. HAR has an ongoing free plan. Apache-2.0 software is free and open source; underlying agents, models and infrastructure retain their own costs.
HAR is listed as free. No paid plan with a published price was found.
API or developer access is mentioned. CLI and MCP support discovery, session control, verification and evidence; plugins add framework-specific verification stages.