Contribo

Systems-level learning

PR-ready outputs

Build safe. Ship open.

Contribo turns modern learning into real open-source contributions—guided paths, repo matchmaking, and PR-ready checklists.

CLI-friendly

Mentor-supported

Safe-by-design

contribo — terminal

repo-match

$ contribo init

✓ Connected GitHub · Imported profile

$ contribo match --difficulty starter --domain systems --timebox 2h

Matched issues

shortlist (3)

PR readiness 78%

1) Improve error messages in CLI parser

Concepts: enum errors, thiserror, snapshot tests · Hint: start by adding a typed error variant.

$ contribo pr --checklist

✓ fmt

✓ tests

✓ docs

△ clippy

✓ Ready to open your first PR.

GitHub OAuth

No passwords—use the workflow you already trust.

Matchmaking

Issues picked for your exact level and domain.

PR-ready

Templates + checklists that align with maintainers.

How it works

A compiler pipeline for your open-source journey

Reduce guesswork. Increase shipping. Learn by contributing—safely.

Compile your fundamentals

Short, systems-first lessons that map directly to real PR skills—tests, tooling, docs, and safe patterns.

Match to a repo that fits you

We suggest issues that align with your level, interests, and timebox—with first-commit hints.

Ship with confidence

PR-ready checklists: formatting, tests, ownership pitfalls, reviewer expectations, and templates.

Paths

Pick a path. We’ll curate the climb.

Role-based tracks reduce decision fatigue—so you can focus on execution.

2–3 weeks

Ships a PR

Ownership + borrowing

Output: Docs + tests PR

3–4 weeks

Ships a PR

Error handling patterns

Output: Bugfix PR

2 weeks

Ships a PR

Tooling + formatting

Output: CI + lint PR

3–5 weeks

Ships a PR

Async + concurrency

Output: Performance PR

2–4 weeks

Ships a PR

Buffers + parsing

Output: Parser PR

2–3 weeks

Ships a PR

Tracing + observability

Output: Telemetry PR

3–4 weeks

Ships a PR

Indexing primitives

Output: Feature PR

2–3 weeks

Ships a PR

Latency + profiling

Output: Optimization PR

2–4 weeks

Ships a PR

Distributed basics

Output: Stability PR

2 weeks

Ships a PR

CLI UX + docs

Output: CLI PR

2–3 weeks

Ships a PR

Build systems

Output: Tooling PR

3–4 weeks

Ships a PR

Release automation

Output: Release PR

Projects

Build things worth reviewing

We bias for real systems patterns: parsing, correctness, performance, and maintainability.

Systems

Build a tiny Redis (Rust)

Protocol parsing, command routing, and safe state management.

Parsing

Write a safe parser

Turn byte streams into validated structures with great errors.

Concurrency

Lock-free queue (guided)

Learn invariants, atomics, and practical safety constraints.

Open source

Fix a real GitHub issue

Repo matchmaking + curated starter-to-PR-ready issues.

Mentorship

Get unstuck fast—without guesswork

Contribo brings social proof and safety rails: mentor feedback, “common pitfalls” per track, and PR checklists that match how maintainers review.

Mentor notes on your PR checklist

Reviewer hints + style guardrails

Community review rooms

Matchmaker

Issues picked for your exact level

Filters that feel like a compiler flag set: difficulty, domain, timebox—then we output a shortlist.

Narrow it down

Difficulty

Domain

Timebox

Output includes: why it matches you, concepts required, and a “first commit” hint.

Starter

Rust

Improve error messages in CLI parser

Why you: you’ve completed “Error handling patterns”. Concepts: enum errors, anyhow/thiserror, snapshot tests.

Starter

Rust

Improve error messages in CLI parser

Why you: you’ve completed “Error handling patterns”. Concepts: enum errors, anyhow/thiserror, snapshot tests.