He's a TypeScript expert
Charlie maintains his own TypeScript dev environment, and knows the language deeply.
Charlie wrote this homepage*
*With a little help from us, using Slack, Linear, and GitHub. We wrote this part though. We think it came out pretty great.
In the cloud,
not on your laptop
not on your laptop
Autonomous multi-tasking,
no babysitting your IDE
no babysitting your IDE
Your teammate,
not a tool
not a tool
Works around the clock,
not just when you're in the zone
not just when you're in the zone
Built for TypeScript,
but speaks great English too
but speaks great English too
Full features,
not simple fixes
not simple fixes
Like any software engineer
Ask him in Slack
Ping @charlie whenever you need a hand
Assign him issues
Hand off tasks in Linear and watch them move
Review his PRs
After he addresses your comments
Charlie grinds so you can work.
Charlie lives in the Cloud, not on your laptop
Ping @Charlie in Slack from anywhere and come back to professional quality mergeable code.
Stop babysitting
your IDE
Charlie requires less human monitoring than even the most complex code agents, and less back-and-forth to deliver more.
Multi-player, multi-threaded, magic
Unlike single-player local tools, Charlie can work on any number of features, issues, tasks or ideas, all at once.
Charlie works where your team works
@Charlie and Chill
Ship Features Debug & Fix Code Quality Maintain Integrations
Turn vague requests into a clear scope + plan + implementation PR
Debug a production error from Sentry → root cause → safe fix PR
High-signal code review: find bugs, propose patches, unblock merges
Do dependency upgrades with targeted fixes and full verification
Harden integrations (Slack/GitHub/Linear) against edge cases + retries
Turn vague requests into a clear scope + plan + implementation PR
Debug a production error from Sentry → root cause → safe fix PR
High-signal code review: find bugs, propose patches, unblock merges
Do dependency upgrades with targeted fixes and full verification
Harden integrations (Slack/GitHub/Linear) against edge cases + retries
Implement a feature end-to-end (types, tests, wiring, docs, verification)
Investigate a flaky CI/test suite and ship a stabilization fix
Refactor a risky/entangled area while preserving behavior and APIs
Add observability: structured logs, tracing, metrics, error context
Build internal developer tooling/CLIs that wrap complex workflows
Implement a feature end-to-end (types, tests, wiring, docs, verification)
Investigate a flaky CI/test suite and ship a stabilization fix
Refactor a risky/entangled area while preserving behavior and APIs
Add observability: structured logs, tracing, metrics, error context
Build internal developer tooling/CLIs that wrap complex workflows
Create crisp technical specs from scattered context
Incident follow-up: summarize failure mode, open targeted work, ship fixes
Migrate code to a new SDK/framework version with minimal regressions
Improve reliability of async pipelines (idempotency, retries, timeouts)
Reduce performance bottlenecks (profiling, caching, query fixes)
Keep PRs healthy: ownership, reviewer routing, stale PR nudges
Create crisp technical specs from scattered context
Incident follow-up: summarize failure mode, open targeted work, ship fixes
Migrate code to a new SDK/framework version with minimal regressions
Improve reliability of async pipelines (idempotency, retries, timeouts)
Reduce performance bottlenecks (profiling, caching, query fixes)
Keep PRs healthy: ownership, reviewer routing, stale PR nudges
Some snippets from Charlie's resume
Communicates like a pro
Charlie asks clarifying questions early, proposes approaches, and keeps you updated along the way.
Makes everyone better
Charlie's code is always to spec, always in your conventions, and is ready to ship.
Try Charlie today
Onboard Charlie and never look back
Create your first PR in minutes. No credit card required.
We compared PRs from GPT-5 and Claude—we merged Charlie's. As a Typescript agent, Charlie is opinionated and production-minded.
Anand Narayan ChatSiva
We've tried every tool and agent we can get our hands on. None is as versatile and consistent as Charlie, and the rate of improvement is incredibly impressive.
Charlton Roberts Third Person
Charlie has been incredible for shipping PR's on the go. I can use my phone and Slack to queue up Charlie to solve PR's. I easily knock out 2-3 PR's on a commute.
Satya Patel Cadra
Each engineer can already manage about 5 PRs simultaneously and even submit PRs while attending meetings! Charlie has been a huge addition to our team.
AJ Jarosinski Statusphere