navvi-signup

navvi-signup is a skill for Claude Code, Codex from fellowship-dev/navvi. It costs 55 tokens per session (1,321 once invoked), scanned A, original, MIT.

A browser-signup guide that creates protected login details, fills out registration forms through Navvi, and handles CAPTCHA steps.

In plain words
What is it for?
Registering new accounts on web services and storing their credentials securely.
Why use it?
It automates account creation while keeping generated passwords out of the agent’s working context and checking for an existing account first.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Registering new accounts on web services and storing their credentials securely.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fellowship-dev/navvi/navvi-signup
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add fellowship-dev/navvi --skill navvi-signup
Clone the repo
git clone --depth 1 https://github.com/fellowship-dev/navvi

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for navvi-signup

README.md
[![agentmods](https://agentmods.dev/badge/skills/fellowship-dev/navvi/navvi-signup/github.svg)](https://agentmods.dev/skills/fellowship-dev/navvi/navvi-signup)
Your own site
<a href="https://agentmods.dev/skills/fellowship-dev/navvi/navvi-signup"><img src="https://agentmods.dev/badge/skills/fellowship-dev/navvi/navvi-signup/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for navvi-signup

Your own site · 80×15
<a href="https://agentmods.dev/skills/fellowship-dev/navvi/navvi-signup"><img src="https://agentmods.dev/badge/skills/fellowship-dev/navvi/navvi-signup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,321 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00055 $0.01321
Opus 5 $0.00028 $0.00660
Sonnet 5 $0.00011 $0.00264
Haiku 4.5 $0.00006 $0.00132

Measured 12d ago against content hash 4f0a18529685, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

navvi-signup scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/navvi-signup/SKILL.md · 130 lines

How it starts

The opening of the file, as written. The whole thing — 130 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Account creation skill. Creates a new account on a service using Navvi MCP tools and gopass credentials.

First Steps (ALWAYS)

  1. Read the persona brief — this tells you who you are, your email, your accounts, your history:
mcp__navvi__navvi_milestone(action="brief", persona="{persona}")

Use the primary email from the brief when signing up. Never guess from the persona name.

  1. Unlock atomic tools — you'll need them for form filling:
mcp__navvi__navvi_atomic(enable=true)

Prerequisites

  • Navvi container must be running (mcp__navvi__navvi_start)
  • GPG/gopass must be initialized (needs NAVVI_GPG_PASSPHRASE in MCP config)

Workflow

Step 1: Check for existing account

Read persona://{persona}/state

If an account already exists for this service, report it and stop.

Step 2: Generate credentials

mcp__navvi__navvi_creds(action="generate", entry="navvi/{persona}/{service}", username="{chosen_username}")

Password is created inside the container and NEVER appears in your context.

Step 3: Navigate to signup page

mcp__navvi__navvi_open(url="https://{service}/signup")

Take a screenshot to see the page. If no obvious signup URL, try the homepage and look for a "Sign Up" or "Create Account" link.

Step 4: Fill the signup form

mcp__navvi__navvi_creds(action="autofill", entry="navvi/{persona}/{service}")

If autofill fails (non-standard form, multiple forms with same field names):

  1. Use navvi_find to locate the correct form fields
  2. Use navvi_fill for username/email only
  3. For password: use navvi_creds(action="autofill") with explicit selectors, or tab to the password field and use autofill
  4. NEVER type passwords manually

Custom Dropdowns (Fluent UI, React Select, etc.)

Do NOT use navvi_browse for custom dropdowns — it gets stuck in scroll loops. Use atomic tools directly:

  1. Find the dropdown trigger: navvi_find("[role=combobox]") or navvi_find("select")
  2. Click to open it: navvi_click(x, y)
  3. Find all options: navvi_find("[role=option]", all=true)
  4. Find and click the desired option by text match
  5. If the option list is long, use navvi_find("[role=option]:text('Chile')") or scroll within the dropdown

Read the full file on GitHub · 130 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 130 lines · 55 tokens per session scan A 4f0a18529685

Subscribe to this mod's changes

navvi-signup is a skill published in the GitHub repository fellowship-dev/navvi (9 stars, last pushed 1mo ago), licensed MIT. It adds 55 tokens to every session and 1,321 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other skills, from other repositories

skill

Anti-detection browser automation MCP skill for OpenClaw agents with 47 tools for navigation, interaction, observation, extraction, downloads, profiles, sessions, and stealth web search.

redf0x1/camofox-mcp · 0 tokens

skills

Anti-detection browser CLI powered by Camoufox. Browse the web, search, extract data, take screenshots, and crawl pages — all with C++ level fingerprint spoofing that bypasses Cloudflare, Google, and most bot detection systems.

Youhai020616/stealth-cli · 0 tokens

camofox-browser

Anti-detection browser automation for AI agents. Use when the user needs stealth web browsing, undetectable scraping, fingerprint spoofing, proxy rotation, or privacy-focused browser automation. Triggers include "stealth scrape", "anti-detection", "bypass fingerprinting", "camofox", "camoufox", "undetectable browser"…

redf0x1/camofox-browser · 93 tokens

camofox-cli

CamoFox CLI — 50 commands for anti-detection browser automation from the terminal. Use when the user needs CLI reference for camofox commands, terminal-based browser control, or a quick lookup of command syntax. Triggers include "camofox command", "CLI reference", "terminal browser", or any request for camofox…

redf0x1/camofox-browser · 77 tokens

reddit

Reddit automation with CamoFox CLI — login, browse, post, comment, reply with anti-detection. Use when the user needs to automate Reddit interactions, post to subreddits, comment on threads, or browse Reddit programmatically. Triggers include "reddit", "post to reddit", "reddit comment", "reddit automation", or any…

redf0x1/camofox-browser · 81 tokens

web-crawl

Get data from websites with the least necessary complexity. Use for quick lookups, visible-page extraction, search results, tables, pagination, detail-page traversal, downloadable files (Excel/CSV/PDF/ZIP), embedded page state, internal JSON/XHR APIs, bulk collection, reusable crawler generation, and delivery in any…

KuiChi-x/reverseloom · 108 tokens