AI tool comparison
CrabTrap vs Pluck
Which one should you ship with? Here is the side-by-side panel verdict, pricing read, reviewer split, and community vote comparison.
Developer Tools
CrabTrap
Open-source HTTP proxy that enforces security policies on AI agent API calls
50%
Panel ship
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Community
Paid
Entry
CrabTrap is an open-source HTTP/HTTPS proxy built by Brex's engineering team that sits between AI agents and the external internet, evaluating every outbound request against configurable security policies before it reaches any third-party API. It uses a two-tier evaluation system: fast deterministic static rules handle the obvious cases (block this domain, require this header), while an LLM-as-a-judge handles ambiguous requests that need semantic understanding — like determining whether a request to send an email is within scope of the current task. Built in Go with a TypeScript frontend, CrabTrap ships with a PostgreSQL-backed audit log and a web UI for policy management. It supports MITM inspection of HTTPS traffic, request/response logging, and policy versioning — making it suitable for production agentic systems where compliance or security teams need a paper trail. Version 0.0.1 was released April 17, 2026 and is MIT licensed. The problem it solves is real: as AI agents gain more autonomy and access to external APIs, the attack surface grows. A compromised or misbehaving agent that can freely call any URL is a significant risk. CrabTrap gives engineering teams a single chokepoint to enforce least-privilege access — something that's been missing from most agentic frameworks that assume a trusted execution environment.
Developer Tools
Pluck
Click any website UI, get a clean AI coding prompt for it
75%
Panel ship
—
Community
Free
Entry
Pluck is a Chrome extension that solves one of the most common friction points in AI-assisted UI development: copying a design from an existing website. Instead of wrestling with raw HTML, you click any UI component — a nav bar, a card, a form, anything — and Pluck generates a clean, structured prompt optimized for Claude, Cursor, v0, or Bolt to recreate it. The extension strips noise from the DOM, restructures styling into clean CSS specifications, and can export directly to Figma. Crucially, it works on pages behind authentication — so you can capture your own app's components, competitor dashboards, or enterprise SaaS UIs without the usual copy-paste nightmare. Built by an indie developer using Plasmo and Next.js. Free tier covers 50 captures per month; unlimited use is $10/month. The "Pluck this" workflow — spot something, generate the prompt, build it — turns browsing into a design research tool. Surfaced on Hacker News Show HN today.
Reviewer scorecard
“This fills a gap that every production agentic system needs but almost no one has solved yet. The two-tier policy engine — static rules for speed, LLM for ambiguity — is the right architecture. The fact that Brex built and open-sourced this suggests they've already battle-tested it against real agent deployments.”
“I do this workflow manually constantly — inspect element, copy classes, paste into Claude, iterate. Pluck automates the messy part. The authenticated-page support is the killer feature; most competitors only work on public sites. $10/month is genuinely cheap for the time it saves.”
“v0.0.1 with 126 GitHub stars is a weekend project right now, not infrastructure you should bet your production agents on. The LLM-as-a-judge for policy evaluation is also expensive and introduces its own latency — you're adding an AI call to evaluate every AI agent call. The operational complexity of running MITM HTTPS inspection in production is non-trivial.”
“AI coding tools already have screenshot-to-code features, and Claude can analyze HTML you paste directly. There's a real question of whether the generated prompts are actually better than just feeding Claude the raw HTML. Also, copying UI from competitor or third-party sites without permission sits in legally murky territory.”
“Agent security tooling is where network security tooling was in the early 2000s — primitive, fragmented, and urgently needed. CrabTrap is an early bet on a category that will be worth billions once enterprises start mandating audit trails for agentic systems. Brex building this in-house and open-sourcing it is a strong signal of what production agent operators actually need.”
“Pluck represents an emerging category: tools that make the entire web a design asset library. As AI coding matures, the ability to rapidly prototype by remixing existing production UIs will become a standard developer skill. Early movers in this workflow will have a productivity edge.”
“This is deeply in the DevOps/infrastructure lane — not something a creator or designer would ever touch directly. But if the tools you use to generate content are backed by CrabTrap-style security, you'd want that. For now, it's a ship for the engineers who configure your AI stack, a skip for everyone else.”
“As someone who regularly finds UI patterns I want to adapt, this changes everything. Browsing becomes active design research. The Figma export is the icing — capture from live production, land in your design file, build from there. The workflow finally makes sense end-to-end.”
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