The Membrane
Fail-closed authorization for AI agents in production
Get picks like this daily. Today's launch numbers, the top launches, AI and tech news, and a daily opportunity pick, straight to your inbox.
Want to reach these readers? Sponsor an issue.
The Membrane is a self-hosted, fail-closed authorization gateway for AI agents with production write access. Every model and tool call needs a live, signed, time-bounded scope. Each allowed action writes a tamper-evident, hash-linked receipt. A replayed proof, a swapped model or an expired scope is refused; a broken chain severs the agent. Your keys, your models, your policy. Open source (Rust). Clone to a refused call in about five minutes, or watch a recorded replay in the browser demo.
PH · launched Nov 11, 2026 · 3 upvotes (top 7%) · 0 views
Niche: ai agent security and monitoring tools · 297 launches, 14 in the last 7 days ▼ -44% · Explore this niche →
Category and tags
- Horizontal
- Compliance & governance
- Developer
- AI-native
- Commercial product
- Open Source
- Developer Tools
- Artificial Intelligence
- GitHub
Visit website ↗ Source listing ↗
More like this: all 297 launches in ai agent security and monitoring tools →
Could you build this?
Partial A proxy that checks scopes and writes hash-linked logs is buildable. However, the security guarantees depend on correct cryptographic signing, fail-closed design, and threat modeling that need real security expertise.
What it would actually take: The stack would be a self-hosted proxy in front of model and tool calls, with signed, time-bounded capability tokens and an append-only hash-chained log. The hard part is getting the cryptography and fail-closed semantics right, which needs an experienced security engineer to review and test. Adoption would also depend on integrations with agent frameworks.
Competitors
Other products that read as similar to this one : 396 launches clear the similarity bar, closest 8 shown.
Attention rank: #48 of 397 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 369 days after the earliest competitor.
- Custodia Labs · ph · 2026-11-03 · 1 upvotes · similarity 0.51
- Agent Vault · hn · 2026-04-22 · 156 upvotes · similarity 0.49
- OneCLI · hn · 2026-03-12 · 161 upvotes · similarity 0.47
- Latch · hn · 2026-02-06 · 5 upvotes · similarity 0.46
- AgentGate Labs · ph · 2026-10-13 · 1 upvotes · similarity 0.46
- AI Guard · ph · 2026-09-24 · 1 upvotes · similarity 0.46
- AgentKeyGate · ph · 2026-11-12 · 1 upvotes · similarity 0.45
- I built a firewall for agents because prompt engineering isn't security · hn · 2026-01-19 · 7 upvotes · similarity 0.45
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.