Open-agent-SDK
Claude Code's internals, extracted and open-sourced
Details
- External ID
- 47609881
- Source
- HN
- Company
- —
- Product
- Open-agent-SDK
- Website domain
- github.com
- Launched
- April 2, 2026
- Cohort
- —
- Upvotes
- 7
- Upvotes percentile
- 0.38817480719794345
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:26 p.m.
- Updated at
- Sept. 7, 2026, 9:26 p.m.
Description
Claude Code's source map leaked last month. Instead of just reading it, I fed the entire source into Claude Code itself and asked it to extract the core agent loop logic.The result: open-agent-sdk — a drop-in replacement for claude-agent-sdk that's fully open source and doesn't spawn a CLI subprocess.Why this matters if you've built with claude-agent-sdk:claude-agent-sdk is just a thin wrapper around the Claude Code binary. It works, but it's a black box — when something breaks, you're stuck.Every query creates a new Claude Code process. That's fine on a laptop, not fine when you're running thousands of concurrent agents in the cloud.What open-agent-sdk does differently:Pure function calls, no CLI process spawning — cloud-native from day one Fully compatible interface with claude-agent-sdk — swap the package name, doneMIT licensed — fork it, patch it, make it yours→ https://github.com/codeany-ai/open-agent-sdk-typescript
Enrichment
- Theme
- Claude integrations and coding agents
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- AI-native
- Project type
- Hobby / open-source project
- Normalized one-liner
- sdk for building ai agents like claude code
- Manually corrected
- False
Could you build this?
Yes The author explicitly created this by prompting Claude with leaked source maps to generate an agent execution loop in TypeScript without subprocess overhead.
Discussion
1 comment analyzed.
Competitors
Other products that read as similar to this one — 635 launches clear the similarity bar, closest 8 shown.
Attention rank: #392 of 636 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 147 days after the earliest competitor.
- AgentBox · hn · 2026-04-23 · 8 upvotes · similarity 0.65
- Agenttik · ph · 2026-09-19 · 2 upvotes · similarity 0.55
- OpenClawdex · hn · 2026-04-19 · 7 upvotes · similarity 0.55
- Mission Control · hn · 2026-02-26 · 45 upvotes · similarity 0.55
- Replicas · ph · 2026-06-03 · 241 upvotes · similarity 0.54
- bettercode · github · 2026-09-20 · 79 upvotes · similarity 0.54
- Claudescope · ph · 2026-09-17 · 1 upvotes · similarity 0.54
- We instrumented Claude Agent SDK using a tiny Rust proxy · hn · 2025-12-04 · 6 upvotes · similarity 0.54
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a dev tools tool for Sales yet.