Meet Matt,
the supervisor agent for AI coding workflows.
Matt installs into the engineering workflow after a team registers MatterSec. It records every session a coding agent runs, catches the moment one drifts from spec. Deleted tests, faked builds, reintroduced CVEs. And replays the moment it happened, all before unsafe code ships.
Observe. Attribute. Catch. Replay.
Matt is a closed loop, not a dashboard. Every step is automated, evidenced, and policy-bound.
Every agent-authored change
Matt captures prompts, tool calls, file edits, tests, commits, PRs, and MCP activity across supported coding agents.
Every commit traceable to its prompt
Click any commit, see the exact prompts that produced it. Session, model, tool, and machine attached.
Deterministic SpecViolations in flight
Test tampering, CI bypasses, assertion neutering, faked builds, vulnerability reintroduction, secret leaks. Named, scored, killed.
Jump to the moment
Every finding links to the exact prompt, command, file edit, and timeline moment where the agent crossed the line.
Built for autonomous enforcement, not passive dashboards.
MatterSec can fail a PR check, post to Slack, open a repair PR, preserve replay evidence, or route sensitive actions to a human. The autonomy level is policy-bound from day one.
When Matt sees an auth regression
The PR check fails when a high-confidence vulnerability regression appears in the diff.
Matt runs alongside the coding agents your team already uses.
Start with the agents active in engineering today. Expand to new background workers and internal agents as your adoption grows.