Beta — 14-day free trial / 30,000 credits / no card required

Detect the error,
AI fixes it, 3-Retry guarantees it.

Receive errors from Sentry or your CI via webhook. Claude API analyzes the root cause and opens a fix PR automatically. The fix is iteratively improved up to 3 times until tests pass — all you have to do is review.

Get Started Free See How It Works
3-Retry
Auto-improvement loop on test failure
100 Files
Auto-collected from the dependency graph
24/7
Repair workers that never sleep

How It Works

From error detection to fix PR creation — the worker runs the whole flow end to end

1

Receive Errors via Webhook

Receive errors via webhook from any source — Sentry, GitHub Actions, CI, or your in-house monitoring tool. Stack traces and environment data are ingested as-is.

2

AI Root-Cause Analysis

Claude API (Sonnet) parses the stack trace using a systematic 6-step debugging methodology. Related files are auto-collected from the dependency graph, providing context across up to 100 files.

3

Generate Fix Code

Generate the smallest possible diff. The model understands your repository structure and architecture patterns, and follows the conventions of your existing codebase.

4

Run Tests & 3-Retry Improvement

Run tests; on failure, the test output is passed back as feedback to regenerate the fix. The AI auto-improves up to 3 times — only fixes that pass tests proceed to the PR step.

5

Auto-Create GitHub PR

The error summary, analysis results, and fix rationale are formatted into the PR body, then pushed to GitHub and a PR is opened. Reviewers just check the diff and merge.

Slack Notification

Notify Slack with the PR URL, analysis summary, test results, and confidence score. If you want to dig deeper, chat with the AI for follow-up questions.

The 3-Retry improvement loop that doesn't give up until tests pass

The first AI fix isn't always perfect.
Red Codens reads the test output, analyzes the failure systematically in 4 steps,
dynamically pulls in additional files as needed, and regenerates the fix.
Engineers no longer need to spend their valuable time on trial and error.

How the 3-Retry loop works
① Generate fix → Run tests
└ On failure: feed test output back, regenerate
② Pull in missing files dynamically → Re-test
└ Still failing → expand context for attempt 3
③ Up to 3 automated improvements
Only test-passing fixes become PRs

Key Features

Everything you need for auto-repair, from error detection to fix PR

Automatic Error Detection

Receive errors via webhook from any source — Sentry, GitHub Actions, CI, or your in-house monitoring tool. Detection-to-repair workflow runs automatically.

AI Root-Cause Analysis

Claude API (Sonnet) drills into stack traces with a systematic 6-step debugging methodology (analyze → hypothesize → trace → verify) to identify the true cause.

Dependency Graph Analysis

Build a dependency graph from import relationships and auto-collect related code across up to 100 files. Fixes account for repository structure and architecture patterns.

3-Retry Improvement Loop

On test failure, test output is passed back as feedback and the fix is auto-improved up to 3 times. On retry, missing files are dynamically added to context.

Automated Test Execution

Validate the fix with your project's test command before opening a PR. Only passing fixes reach review, dramatically reducing noise.

Automated GitHub PR Creation

The error summary, analysis, and fix approach are formatted into the PR body. The GitHub App pushes safely and opens the PR — reviewers just merge.

Bug Report Chat

Chat with the AI to dig deeper into analysis results. Ask "why was this fixed?" or "are there other affected areas?" and get answers grounded in full context.

External Report Portal

Route bug reports from external users or support teams through the same repair pipeline via the public bug report portal.

Codens Family Integrations

Pipe bugs found by Blue Codens (QA) into Red, then run auto-repair and re-test verification end to end.

Simple 4-Step Setup

Integrates with your existing Sentry, GitHub, and Slack right away

1

Create Account

Sign up at auth.codens.ai. Create an organization and invite teammates.

2

Configure Repos & Test Commands

Install the GitHub App and register target repositories along with a test command (e.g. `pytest`).

3

Distribute the Webhook URL

Configure the Red Codens webhook URL in Sentry, your CI, or monitoring tools. Slack integration can be enabled at this stage as well.

✓

Review the Fix PRs

When errors occur, just review and merge the auto-generated PRs. Recurring errors are tracked in the history.

Repair Run Example

Worker Progress

receive_error_webhook Done (0.4s)
analyze_root_cause Done (12.3s)
generate_fix (attempt 1) Done (8.1s)
run_tests Running…
open_pr Pending

AI Analysis Live Output

▸ Received Sentry webhook · KeyError: 'user_id'
▸ Building dependency graph (87 files)
▸ Loading repo structure (Clean Architecture / FastAPI)
› Hypothesis 1: auth middleware accessed before user resolution
› Tracing flow: routes/auth.py → middleware/auth.py
✓ Root cause: missing None guard in get_current_user
▸ Generating minimal fix…
▸ Running pytest tests/unit/test_auth.py
3-Retry auto-improvement PR only after tests pass Full audit log

UI Preview

See errors, fix proposals, and PR status in a single view

app.red.codens.ai/projects/example/proposals

Fix Proposals

Pending 3 Applied 12
FP-128 · Sentry · 2 min ago
fix: KeyError 'user_id' in auth middleware
3-Retry: 1/3 success · pytest 23 passed · confidence 92%
Awaiting Review
FP-127 · CI Failure · 18 min ago
fix: TypeError on /api/v1/orders date parsing
3-Retry: 2/3 success · pytest 87 passed · PR #421
PR Created
FP-126 · Sentry · 1 hour ago
fix: race condition in webhook deduplication
Analyzing: building dependency graph (87 files)
Analyzing
FP-125 · Report Portal · Yesterday
fix: locale fallback for invoice export
Merged · PR #418
Merged

Subscription Pricing

Start with a 14-day free trial, then choose from four plans with monthly credit allowances.

Credits are shared across the entire Codens family.

What are credits?

Red Codens consumes credits for AI error analysis, fix code generation, and test feedback improvement.
A monthly subscription gives you predictable operations, with flexible top-up packs available whenever you need extra credits.

Per-incident consumption depends on error complexity, repository size, and how many 3-Retry attempts are needed.

14-day free trial · 30,000 credits · no card required

Free Trial

For trying it out

¥0
30,000
credits (14 days)
No card required
Start free

Hobby

For solo developers

¥3,000 /mo
300,000
credits / month
5 seats
Get started
Popular

Pro

For teams

¥10,000 /mo
1,000,000
credits / month
10 seats
Get started

Business

For production workloads

¥50,000 /mo
5,000,000
credits / month
25 seats
Get started

Included in all plans

3-Retry improvement loop Dependency graph analysis Automated GitHub PRs Shared Codens family credits Audit log

For Enterprise (unlimited credits, custom contracts, SLA), reach out to support@corevice.com.

Free your engineers from late-night error response

Hand off everything from error detection to fix PRs to Red Codens. Your team can focus on review and design.

Get Started Free Contact Us

14-day free trial • 30,000 credits • no card required

Contact

Questions, enterprise plan inquiries, onboarding help — feel free to reach out

Email

We typically respond within 2–3 business days.

support@corevice.com

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