Your AI build engineer.

Hermetiq's agents run and optimize your Bazel builds with AI.

An abridged screen recording of real Barn Owl usage in Hermetiq's demo project: typing, live response streaming, opening evidence, a follow-up, and keyboard scrolling are captured continuously at their original pace. Idle waiting and unrelated response detail are omitted between segments. The window stays stationary, with no camera zooms or pans. An engineer asks: What should we change first to make our builds faster? Barn Owl checks project, profile, cache, remote-action, and comparable-build trends. C++ compile actions average 6.4 seconds queued versus 6.3 seconds executing. The engineer asks for one controlled worker-capacity experiment and a short validation checklist. Barn Owl recommends a pool-size comparison using the same Envoy workload, changing one capacity variable at a time while keeping --jobs and other workload settings unchanged. Validation compares queue time, execution time, build duration, cache reuse, and cost. The cause of the queue is not yet isolated, and the experiment is a recommendation, not a measured speedup. These are demo project findings.

A frontier AI lab uses Hermetiq to analyze 2M+ builds and 4B+ build events every day.

Read the customer story →

A failed build. A one-line fix.

Follow a real run: Hermetiq surfaces the failed action, Codex fixes its inputs, and Bazel verifies the result.

Step 1 of 4

A file exists locally. The remote action cannot see it.

The release-manifest action exits 1 on Buildbarn. Hermetiq records the failed invocation and action.

Read the build log

failure.log (excerpt)text

Executing genrule //:release_manifest failed: (Exit 1)
cat: build-mode.txt: No such file or directory
ERROR: Build did NOT complete successfully

Read the complete walkthrough

Inspect the run and reproduce it

An intentionally introduced missing input in a small public sample. Hermetiq supplied the failed-action evidence; Codex applied the patch and reran Bazel. This is a recorded client-assisted workflow, not a customer benchmark.

See the whole build system.

Connect each slow build to the actions, cache misses, queues, and workers behind it. Give your engineers and AI agents the evidence to act.

Bazel profiles, Buildbarn telemetry, and infrastructure costs in one place.

Explore the data behind your analytics See a measured Buildbarn optimization

See where build time goes.

Separate analysis, queueing, cache checks and execution time.

Explore the product →

Hermetiq · Profile & critical path

Explore Bazel and Buildbarn guides

An AI build engineer. Part of Hermetiq.

Meet Barn Owl.

It watches your builds, catches the regressions, and earns the trust to fix them. You get your product engineers back.

You can use Barn Owl directly in Hermetiq, or give your own AI agent access to Barn Owl via MCP.

Wide awake.

Barn Owl watches build health, performance, and infrastructure usage around the clock—so a slow regression doesn’t become your next surprise.

Knows your build.

It connects a failed build or slowdown to the work and infrastructure behind it. Answers from your actual build history, not generic advice.

Earns your trust.

Explanations first. Recommendations next. Then fixes as PRs you review and merge. More autonomy only where you grant it—never the keys to prod by default.

Gets wiser.

Every build outcome is another lesson in your stack’s failure modes. The owl learns what actually worked, not just what sounded plausible.

Understand and improve your builds.

Analyze your Bazel build data and investigate failures, cache misses, performance, and costs with Barn Owl, your AI build engineer. Keep your existing infrastructure.

Build Analytics & AI

Let Hermetiq run your infrastructure.

Hand off remote cache and execution to Hermetiq, with Build Analytics & AI included. Agree the workload, deployment, and operating responsibilities with us.

Managed Cache & Execution

Built for production.

Enterprise ready

SOC 2 Type I Cloud or self-hosted

Bazel ecosystem

BazelCon 2026 sponsor Official Product Partner Listed Remote Execution Service

Investors

LAUNCH Venture Fund Jason Calacanis Gokul Rajaram Niranjan Tulpule · VP of Developer AI at Google

Built for teams building products

Give your engineers more time to ship.

More services, more dependencies, more code from your agents. Hand off build operations so your engineers can focus on moving your product forward.

Explore managed builds

Do we need to use Bazel already?

No. We assess your codebase, dependencies, toolchains, and migration effort before onboarding. The agreed workload needs a supported Bazel build before Hermetiq can operate it. We agree the setup and operating scope with you first.

Why not just CI and a coding agent?

Those are tools your team operates. Hermetiq takes responsibility for establishing, operating, and optimizing the supported build system underneath them. Your engineers keep ownership of product code, tests, and change approvals.

What about infrastructure costs?

Connect build activity to infrastructure usage so you can see where resources go. Barn Owl watches for wasted work and over-provisioned capacity, helping you plan instead of guessing at the next bill.

Build your product. We’ll watch the builds.

Discuss your Bazel migration or build bottlenecks. Already using Bazel? Try Hermetiq Cloud.

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