Open-agent-SDK
Claude Code's internals, extracted and open-sourced
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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
HN · launched Apr 2, 2026 · 7 upvotes (top 61%) · 0 views
Niche: ai agent development platforms · 598 launches, 22 in the last 7 days ▼ -29% · Explore this niche →
Category and tags
- Horizontal
- Dev tools
- Developer
- AI-native
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 598 launches in ai agent development platforms →
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 : 1426 launches clear the similarity bar, closest 8 shown.
Attention rank: #857 of 1427 (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 0.66
- Mission Control · hn · 2026-02-26 · 45 upvotes · similarity 0.56
- Agenttik · ph · 2026-09-19 · 2 upvotes · similarity 0.56
- OpenClawdex · hn · 2026-04-19 · 7 upvotes · similarity 0.56
- We instrumented Claude Agent SDK using a tiny Rust proxy · hn · 2025-12-04 · 6 upvotes · similarity 0.56
- Replicas · ph · 2026-06-03 · 241 upvotes · similarity 0.56
- bettercode · github · 2026-09-20 · 79 upvotes · similarity 0.55
- Claudescope · ph · 2026-09-17 · 1 upvotes · similarity 0.55
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