Gauntlet
Agent testing infrastructure

Catch your agent's failures in a sandbox, not in production.

Gauntlet clones the tools your agent touches (Slack, Jira, Gmail, your own APIs), runs it through real workflows, and shows you exactly what broke, with a fix ready to review.

Environments live, awaiting your first run
BEGIN
EARLY DESIGN PARTNERS
SteelAGENT BROWSER INFRA · infrastructure
StableBrowseRELIABLE BROWSING FOR AGENTS · agents
Agent teams

Building
an AI agent?

Run it against cloned Slack, Jira, Gmail, and internal tools instead of the real ones. When a workflow breaks, Gauntlet writes the fix. You just approve it.

Infrastructure teams

Building
AI infrastructure?

Point synthetic agents (impatient, confused, hostile) at your platform in a sandbox. Every failure shows up with a full trace before a real client agent finds it in production.

For agent builders
01

Cloned environments

Run agents against disposable copies of email, Jira, Confluence, Slack, and internal tools without touching production.

02

Self-healing loop

When a run fails, Gauntlet diagnoses the break, proposes a repair, and re-runs the workflow so your team can review the path to passing.

03

Approve before deploy

Every repair lands as a reviewable diff. Inspect the trace, see exactly what changed, and ship only after sign-off.

For infrastructure builders
01

Synthetic adversarial personas

Generate impatient, confused, long-running, recovery-oriented, and hostile agent behaviors to pressure-test your platform.

02

Automated workflow generation

Gauntlet writes and runs controlled workflows that exercise your surface the way real agents will.

03

Surface failures first

Catch breakages in a sandbox with full traces and reproductions before a client agent touches production.

Cloned tool surfaces

One loop, two reasons to run it.

STEP 01CloneStand up the real tools your agent talks to
STEP 02RunDrive workflows through the environment
STEP 03Stress testPush edge cases & adversarial personas
STEP 04Heal / SurfacePropose a repair · or report the failure
STEP 05ApproveReview the diff & ship with confidence
The bottom line

Run the failure in a sandbox, not in front of your customers.