Catch drift and gaps that coding agents dangerously skip

Arcus enables engineering orgs to move at agent speed, catching gaps and drift across planning, coding, testing, and release.

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Agent-native. Works with the tools your team already uses.
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The verification harness for AI-native software teams

Arcus checks the code against what the ticket asked for while developers and agents are still coding, so drift gets fixed before you move on to the next ticket.

arcus · feat/login

Independent agents check every PR against the sprint — gaps flagged before they ship.

SP-44

Sprint 43 · Payments v2

148 Gaps IdentifiedIn Progress
75% Readiness68% Coverage29 Gaps

Correlates the diff against coverage, tickets, and history to show what a change could actually break — not just which tests ran.

By:
StoryModules impacted
Gap type: All 300 FiltersSimpleDetailedSearch tests
Account Summary Cards
73%4 open gaps|15 testsAccept all 4
Booking Management
0%15 open gaps|15 testsAccept all 15
Dashboard
50%1 open gap|2 testsAccept all 1
Dashboard Account Summary Cards
30%7 open gaps|11 testsAccept all 7

PR, ticket, design, and test history linked in one chain — so when something fails, you know exactly what it was supposed to do.

Jira
Test Management by Testsigma/SCRUM-7

Success Criteria

  • Complete family quote process in under 15 minutes
  • Quote completion rate > 65% for family plans
  • Clear family pricing differentiation displayed
  • Professional proposal with all family members listed
Linked Test CasesLink
JT-8Attempt to add family member with missing required fields66.67%Passed
JT-9Remove a family member from the list66.67%Passed
JT-12Quote completion rate above 65% - Multiple users0%Failed
JT-14Monitor Quote Completion Rate During Peak Hours66.67%Passed

Follow a task from ticket to release.

Plan

The ticket becomes the baseline intent everything is verified against.

Jira
Test Management by Testsigma/SCRUM-7

Success Criteria

  • Complete family quote process in under 15 minutes
  • Quote completion rate > 65% for family plans
  • Clear family pricing differentiation displayed
  • Professional proposal with all family members listed
Linked Test CasesLink
JT-8Attempt to add family member with missing required fields66.67%Passed
JT-9Remove a family member from the list66.67%Passed
JT-12Quote completion rate above 65% - Multiple users0%Failed
JT-14Monitor Quote Completion Rate During Peak Hours66.67%Passed

Arcus reads the ticket, its acceptance criteria and the designs, so every later check knows what the task was supposed to do.

How Arcus sits across the lifecycle

Plan sets the scope. Code, test and release are where the agents act. The knowledge graph runs underneath all of it, and feeds forward into the release gate.

Plan
PlanTickets, acceptance criteria, specs — set the baseline intent that everything coded and tested downstream is verified against.
Code
Code

Where the diff happens

  • Unit tests
  • Blast radius
  • Developer-authored functional tests
Agent-native
Claude CodeClaude CodeCodexCodexCursorCursor
Test
Test

Where coverage gets proven

  • Agentic test runs
  • Explorer agent
  • Coverage gap detection
  • Traceability
Release
Release

Where the call gets made

  • Release confidence
  • Release readiness
  • Release gate
Integrations: where Arcus reads context and shows what it finds
JiraLinearFigmaClaude CodeCodexGitHub CopilotCursorGitHubGitLabJenkinsCircleCIAzure DevOpsSlackMicrosoft TeamsAll integrations →
Compliance
SOC 2 Type IIHIPAAGDPRISO 27001ISO/IEC 42001
Knowledge graph0 nodes · 0 edges
built from every agent run across plan, code and test — connective tissue, not a fourth stage
Hover a hub
Feeds forward into release confidence — the gate verdict is only possible because of what the graph accumulated upstream.

Works with the agents you use

Arcus plugs natively into whichever agent wrote the code, reading exactly what it shipped, and checks it independently of the agent that wrote it.

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Works with your SDLC stack natively

No separate portal to check. Gaps, blast radius, and traceability show up in whichever tool the team already runs, via native 2-way sync, not a dashboard you have to remember to open.

GitHubPR checks
JiraTickets
LinearIssues
Claude CodeIn-session checks
JenkinsBuild gates
SlackAlerts and threads

Quality starts at the source.

The Arcus CLI is a true harness, sitting deeply embedded in the developer’s workflow — the same terminal, the same hooks, the same CI, not a dashboard bolted on after the fact.

See the CLI →

Building your own?

Plenty of teams start with Claude and Playwright, and it works. This is what you end up owning once it does.

In-house verification harness built using Claude
Arcus
Who checks the work
Built in-houseThe same agents that wrote the code
ArcusAn independent system, separate from the agents writing code
When behaviour gets checked
Built in-houseAfter the code is written, in CI or a review pass
ArcusWhile the coding session is still open, against expected user behaviour
Finding missing coverage
Built in-houseCoverage stops at the tests someone thought to write
ArcusAn exploratory agent crawls the live app, finds what’s missing and widens the regression suite
Test execution across apps
Built in-housePlaywright for web, Appium for mobile, a third-party vendor for Salesforce
ArcusWeb, mobile and Salesforce in one platform
Test execution infrastructure
Built in-houseYour CI runners and local browsers, plus a third-party browser lab, a third-party device lab, or an in-house device lab your engineers have to build and run
ArcusA real device and browser cloud lab, built in
Keeping tests stable
Built in-housePlaywright scripts your team updates every time the UI moves
ArcusDeterministic scripts in plain English steps, with self-healing
Test management
Built in-houseA sheet, or a paid third-party tool
ArcusAgent-native test management, built in
Fitting into how you work
Built in-houseCustom wiring for each coding agent, tracker and CI pipeline
ArcusNative integrations with coding agents, project tools and CI/CD, plus a CLI agents can call directly
Where issues show up
Built in-houseWherever your scripts post them
ArcusFiled in Jira and Linear, surfaced in the CLI, Slack and GitHub
Ready to ship?
Built in-houseA judgement call at the end
ArcusRelease confidence built from everything verified upstream
Deployment
Built in-houseSelf-hosted, and hard to scale across regions
ArcusPublic cloud, private cloud or self-hosted
Compliance
Built in-houseYours to document and audit
ArcusSOC 2 Type II, ISO 27001, HIPAA, GDPR, ISO/IEC 42001
Upkeep
Built in-houseEngineers pulled off product to maintain it
ArcusMaintained by us

Keep your agents writing code. Let Arcus check it.

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