Co-founder Dan Belcher is extending mabl's testing pitch to software written by coding agents, with guardrails, change-impact analysis and terminal-based checks.
By [RuntimeWire Staff](https://runtimewire.com/author/runtimewire-staff)
· Published
Primary source: [PR Newswire](https://www.prnewswire.com/news-releases/mabl-introduces-agentic-testing-harness-to-clear-the-verification-bottleneck-created-by-coding-agents-302914831.html)
Why it matters #
As coding agents increase software output, mabl is betting that teams will need testing controls outside the agents that write the code. Its reported activity shows adoption inside customer workflows; independent accuracy and outcome data would show whether those checks earn trust.
On October 21st, 2026, mabl introduced tools to check code written by coding agents before developers open a pull request, extending co-founder Dan Belcher's long-running bet that faster software development needs a stronger testing layer. mabl says its new capabilities let teams set rules for agents, identify relevant tests and inspect a change's impact from the terminal.…
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