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The Platform

One governance layer. Four capabilities the rest of your stack was never built to handle.

Copilot and Cursor write the code. Static analyzers grade the syntax. APMs watch what already broke. Tomosu sits above all of them. It’s the layer that decides what reaches production, scores the risk, finds the change that caused the page, and writes the audit trail.

This is AI agent governance in practice: purpose-built AI agents for policy, risk, context, and evidence work collaboratively in real time. No single model decides alone. Each agent owns a domain, challenges the others, and together they produce a governance verdict no monolithic tool can match.

faster review throughput once AI-generated PRs clear the governance lane vs human-only review queues
~40%
drop in repeat escalation clusters once incidents feed back as guardrails pilot target, day 90
90 days
to a board-ready Production Reliability Index trendline from read-only connection to first executive review
The Tomosu Indexes

One risk ledger every AI-generated change rolls up into.

Static analyzers give you pass/fail. APMs give you mean-time-to-detect. Tomosu gives you eight trendable, executive-readable signals, calibrated to your stack.

PRI

Production Reliability Index

A single trendable master score that rolls up the seven sub-indices, calibrated per organization to reflect your architecture, maturity, and risk tolerance. The one number the board tracks.

FI
Fragility Index

How likely this code is to break, based on structural signals and real production behavior.

DI
Drift Index

The gap between what dev expected and what production delivered. “Test like you fly.”

GC
Governance Compliance

Severity-weighted adherence to your organization’s coding, security, and observability standards.

RS
Runtime Signals

Live production health: error rate, latency, and resource anomalies aggregated per service.

CV
Code Volatility

Churn and hotspot density, mapped onto technical debt quadrants. Penalizes files that keep re-triggering the same issues.

DV
Deployment Velocity

Frequency and safety of releases. Rewards small, confident batches.

EEI
Escalation Index

The interrupt tax on engineering: repeat ticket rate, tier-level MTTR, senior on-call load.

Roll-up into PRI

One weighted score. One trendline. Calibrated to your org, not a generic template.

Want to see the indexes in motion? Walk the interactive PRI Impact Ledger to model how each index moves the roll-up score, or place your org on the governance maturity model to see what the next stage requires. Background reading: why a signal is not a gate and the two halves of a merge gate.

Where it shows up

Two surfaces: one for the people, one for the agents.

VisionBoard is where humans read the score. The Git Agent is where the score acts on your pipeline. Both are included from the free plan — what grows with your plan is scope, not access.

VisionBoard

The dashboard your CTO actually opens

Every index, every trendline, every repository in one place — readable without a translation layer between engineering and the board.

FreeOne repository, view-only
GovernWhole organization, with score history and audit log
EnterprisePlus team and business unit views, impact metrics, custom dashboards and audit export
Git Agent

Governance that acts, not just reports

It branches, commits and opens the pull request — and holds the merge behind a PRI gate, so a change that would move the score the wrong way never lands quietly.

FreePR risk scores, read-only
GovernAutomated branch, commit and PR with a PRI merge gate
EnterprisePlus CI/CD auto-merge, runtime-aware gates, custom policies and self-hosted runners

Full plan detail lives on the pricing page.