Browser Login

Drive an authentication flow once, sanitize cookies through AIDefence, and vault a reusable cookie handle in browser-cookies for future…

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Install this skill Read the source first Free Written by ruvnet · unverified publisher
Context cost
800 tokensestimated from the bundle, loaded when it triggers
Bundle
1 file · 3.2 kBtext throughout, nothing executable
Licence
MITfree to use
Last change
no release on file
Servers it uses
Noneruns standalone

What it does

Drive an authentication flow once, sanitize cookies through AIDefence, and vault a reusable cookie handle in browser-cookies for future sessions

Installed, it changes the agent in these ways.

What this skill changes about the agent is not written down here yet. The listing was collected from its source, and the description is in its own SKILL.md.

Workflow

Runs a procedure end to end.

browserautomation

The skill itself

This is the whole product. A skill is instructions the model reads, so there is nothing behind the listing you cannot see first — the front matter loads with every session, and the body below it loads when the skill triggers.

SKILL.md3.2 kB · 47 lines
--- name: browser-login description: Drive an authentication flow once, sanitize cookies through AIDefence, and vault a reusable cookie handle in browser-cookies for future sessions argument-hint: "<login-url> [--vault-name <handle>] [--mfa]" allowed-tools: mcp__plugin_ruflo-core_ruflo__browser_open mcp__plugin_ruflo-core_ruflo__browser_close mcp__plugin_ruflo-core_ruflo__browser_fill mcp__plugin_ruflo-core_ruflo__browser_type mcp__plugin_ruflo-core_ruflo__browser_click mcp__plugin_ruflo-core_ruflo__browser_wait mcp__plugin_ruflo-core_ruflo__browser_eval mcp__plugin_ruflo-core_ruflo__browser_snapshot mcp__plugin_ruflo-core_ruflo__aidefence_scan mcp__plugin_ruflo-core_ruflo__aidefence_has_pii Bash Read Write ---
8# Browser Login
9
10Authenticate against a target site once, then vault the resulting session credentials so subsequent skills (browser-extract, browser-form-fill, browser-test) can reuse them without re-driving the auth flow. Borrows the pattern from Browserbase's cookie-sync/SKILL.md but stores the resulting context in AgentDB rather than on a hosted backend.
11
12## When to use
13
14- Establishing reusable auth for a host the agent will visit repeatedly.
15- Refreshing a vaulted cookie set whose expiry has passed.
16- Capturing an MFA-protected session that requires interactive completion.
17
18## Steps
19
201. **Open a recorded session** via browser-record.
212. **Drive the auth flow** — fill credentials with browser_fill / browser_type. Credentials come from the user or environment; do **not** read them from .env or paste them into the trajectory args.
223. **Handle MFA** (when --mfa): pause for user input or invoke the user's TOTP helper; capture only the resulting redirect, not the code itself.
234. **Capture cookies** via browser_eval:
24 ```javascript
25 document.cookie // returns the cookie string for the active document
26 ```
27 Or use the Playwright context API where exposed.
285. **AIDefence sanitize**:
29 ```bash
30 # Each cookie value passes aidefence_scan to flag raw secrets / high-entropy tokens.
31 ```
32 Tokens that look raw get vault-wrapped (an opaque handle) before AgentDB store; raw values never enter the namespace.
336. **Store in browser-cookies**:
34 ```bash
35 npx -y @claude-flow/cli@latest memory store --namespace browser-cookies \
36 --key "<host>" \
37 --value "{vault_handle:<opaque>, expiry:<iso>, aidefence_verdict:safe}"
38 ```
397. **Return the vault handle** so downstream skills can mount it via the planned browser_cookie_use MCP tool.
40
41## Caveats
42
43- Never log raw cookie values, tokens, or passwords. The trajectory step for the auth POST records only the form field names and a <redacted> placeholder for values.
44- The browser_cookie_use MCP tool is reserved (ADR-0001 §7) but not yet implemented. Until then, downstream skills mount the vaulted cookies via a helper bash function in scripts/ (TBD).
45- Some sites bind cookies to a UA fingerprint; if a vaulted cookie fails on reuse, re-run browser-login. Do not attempt to fingerprint-match yourself.
46- This skill is **not** a credential storage solution. The vault-handle pattern protects against AgentDB leaks, not against compromise of the agent's environment.
47
In the file
SKILL.md397 words
Files1
LicenceMIT
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈180
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
620
on trigger
The instruction body, read only when the skill fires.
0.40%
of a 200k window
Ten skills this size would take about 4% of the window before you open a file.
050k100k150k200k context window

800 tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Small enough to keep loaded permanently without thinking about it.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

Adoption
Installsnone yet
Ratingno reviews yet

The procedure it runs

The procedure has not been published here. It is in the skill’s own SKILL.md, which its author has not sent to the marketplace yet.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

It asks the agent to write files, using whatever file access your client already has. It never touches the network.

What it asks for
Writes filesyes
Network accessno

Read from the allowed-tools line of this skill’s own SKILL.md. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

1 file, 3.2 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in.

  • SKILL.md3.2 kB
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the bundle is 1 file you can review in full before installing. The MIT licence covers the templates and examples as well as the instructions.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Browser Login · 800 tokens when loaded npx mcprush@latest skill add ruvnet/browser-login

Writes to .claude/skills/browser-login/ in the current project. Add --global to put it in your home directory instead, for every project.

Which clients pick it up on their own

A skill is a folder of text. A client with a skills folder reads it without being told; everywhere else the same text works, it is just handed to the model rather than found.

Claude Code.claude/skills/
Claude Desktop
ChatGPT
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok.grok/skills/
Zed.agents/skills/
Windsurf.windsurf/skills/
Agent SDK.claude/skills/
HTTP / API
This release
Versionnot versioned
Publishedno release date on file
PriceFree
Referenceruvnet/browser-login

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

v
  • No earlier releases have been published to the marketplace.
Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

Reviews

no reviews yet · no installs yet

Nobody has reviewed this skill yet. The rating is the mean of the reviews written here, so there is none until somebody writes the first.

Who can post

Only accounts that have had the skill installed for fourteen days, so a review is written after living with it rather than after reading it. Publishers may reply once.

Publisher
Servers0