GitLab AI Hackathon 2026 · Green Agent Category
⬡ CARBIDE
Carbon-Aware Intelligent Developer Environment
"Every developer merges code every day.
None of them know its carbon cost. CARBIDE changes that."
Powered by Anthropic Claude · GitLab Duo Agent Platform · A GrYEN Initiative
The Problem
0
tools measure
code carbon today
⚡ N+1 queries hit the DB 1,000x per request
♻️ Wasted CI/CD jobs run on every single commit
🤖 AI tool usage has zero carbon tracking
💰 No financial sustainability metrics for dev teams
The result: software teams unknowingly produce carbon waste with every sprint.
What is CARBIDE?
🌱
Green Code Review
Scans every MR for energy anti-patterns and posts Carbon Score
⚡
Pipeline Audit
Detects wasted CI/CD jobs and suggests efficiency fixes
📊
Green Finance Report
Weekly ESG score, cost-per-carbon-unit, trend analysis
💬
@carbide Advisor
On-demand sustainability advice via @mention
📦
Dependency Analyser
Flags energy-heavy packages and lighter alternatives
Zero setup · No backend · No server · Works on any GitLab project instantly
Carbon Score Algorithm
Score = (Code × 0.35) + (Pipeline × 0.35) + (AI Usage × 0.30)
Code Patterns · 35%
▸ N+1 database queries
▸ Polling loops without backoff
▸ Memory leaks
▸ Sync blocking calls
▸ Heavy dependencies
Pipeline Efficiency · 35%
▸ Wasted jobs every commit
▸ Duplicate stages
▸ Failed retries
▸ No artifact produced
▸ Sequential chains
AI Usage · 30%
▸ Long inefficient prompts
▸ Repeated questions
▸ Sessions → no commits
▸ Estimated energy cost
▸ Productivity ratio
80–100 🟢 Green
60–79 🟡 Improving
0–59 🔴 Action Required
How It Works
1
Developer merges MR
Trigger fires automatically
2
Read code diff
list_merge_request_diffs tool
3
Scan anti-patterns
grep + read_files tools
4
Calculate score
3-signal weighted formula
5
Post MR comment
create_merge_request_note
6
Pipeline audit
get_job_logs + pipeline_errors
16 GitLab Duo Agent tools · Custom Agent + Flow · Claude via GitLab built-in · No external dependencies
Real Results — Live on Our Repo
78.3
Average Score
across 3 MRs
85
Highest Score
MR #5 — excellent
6
Issues Found
and fixed by team
CARBIDE is live in the GitLab AI Catalog · Catalog ID: gid://gitlab/Ai::Catalog::Item/1006097
CARBIDE vs GitGreen
Feature | GitGreen | CARBIDE |
Pipeline emissions tracking | ✅ GCP only | ✅ Any runner |
Requires Google Cloud | ✅ Required | ❌ Not needed |
Code-level analysis | ❌ | ✅ |
AI usage carbon tracking | ❌ | ✅ |
Green Finance metrics | ❌ | ✅ |
Weekly ESG report | ❌ | ✅ |
Anthropic category eligible | ❌ | ✅ |
Product vision beyond hackathon | ❌ | ✅ GrYEN |
The Bigger Vision — GrYEN
CARBIDE is not a hackathon project. It is the first module of GrYEN — a full sustainability intelligence platform.
⬡ Carbon Score per project
→
Green Score™ per user/business
⬡ Sprint ESG Score
→
Business ESG Dashboard
⬡ Cost-per-carbon-unit
→
Green Financial Analysis
⬡ Weekly Green Finance Report
→
BRSR / GRI Compliance Reports
⬡ AI usage tracking
→
LLM Energy Consumption Module
⬡ Dependency Analyser
→
Lifetime Cost Analysis
⬡
CARBIDE
Carbon-Aware Intelligent Developer Environment
🏆 Green Agent Category
🔗 gitlab.com/gitlab-ai-hackathon/participants/35521271
🌍 A GrYEN Sustainability Initiative
👤 Anson Joseph · @Anson811
"Because every developer deserves to know the carbon cost of their code."