letta-ai/letta-code · src/skills/builtin/browser-use/SKILL.md

browser-use skillB

browser-use is agent-read markdown (skill) from letta-ai/letta-code: Control a real browser to navigate pages, click, type, fill forms, inspect rendered UI, take screenshots, or record video. Load only when the user asks to open or automate a browser, interact with or test rendered page UI, scrape a site that needs browser execution, or capture a browser screenshot or video. Do not load for backend logs, traces, API or stream events, source-code inspection, or plain HTTP or web research that does not require a browser..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add letta-ai/letta-code/browser-use@git:20260903.d9a1dc2
Exact content
mdr add letta-ai/letta-code/browser-use@sha256:3c98f7be0b956721

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_nyf33d5iztojxhqo.svg)](https://markdownregistry.com/a/art_nyf33d5iztojxhqo)

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Versions

versioncommittedcommitsizeaudit
git:20260903.d9a1dc2 latest2026-09-03 d9a1dc2 13,200 BB view · diff
git:20260831.c346e352026-08-31 c346e35 15,499 BB view

Audit of the latest version

B  16 of 17 checks passed. Deterministic, no model, same answer every run.
  • fail: No link to a raw IP address (matched: http://127.0.0.1)
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (13200 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No script tag

Source

GitHub

letta-ai/letta-code · 3,370 stars · license Apache-2.0 · pushed 2026-09-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_nyf33d5iztojxhqo
GET https://markdownregistry.com/api/v1/resolve?ref=letta-ai/letta-code/browser-use
GET https://markdownregistry.com/api/v1/blob/3c98f7be0b9567219e7d03d5fb03536171b239dd8b856a28ed546c4db7c1e6e6

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.