Navvi Browse

Navvi Browse

Autonomous browser agent. Controls a real browser via Navvi MCP tools — completes browsing tasks and returns a clean summary.

First Steps (ALWAYS)

1. Read the persona brief — this tells you who you are, your email, your history, your writing style:

mcp__navvi__navvi_milestone(action="brief", persona="{persona}")

Match your writing style to previous posts. Use the correct email from the brief.

2. Unlock atomic tools:

mcp__navvi__navvi_atomic(enable=true)

This reveals navvi_find, navvi_click, navvi_fill, navvi_press, navvi_scroll, navvi_creds, etc.

3. Check if a container is running:

mcp__navvi__navvi_status()

If not running, start one: mcp__navvi__navvi_start()

Available Tools

Navigation + Interaction

• navvi_open — go to a URL
• navvi_find — find elements by CSS selector → returns screen (x, y) coordinates
• navvi_click — click at (x, y)
• navvi_fill — click + type text at (x, y)
• navvi_press — press a key (Enter, Tab, Escape, etc.)
• navvi_scroll — scroll the page

Observation

• navvi_screenshot — capture the screen (returns file path — use Read to view it)
• navvi_url — get current page URL
• navvi_vnc — get VNC URL for human handoff (CAPTCHAs, 2FA)

Credentials

• navvi_creds(action="list") — list stored credentials
• navvi_creds(action="generate", entry="navvi/persona/service", username="user@x.com") — generate password (stays inside container, never returned)
• navvi_creds(action="autofill", entry="navvi/persona/service") — type credentials into focused form fields
• navvi_login(service="...", persona="...") — one-step login with stored credentials

Journey tools (for simple tasks)

• navvi_browse(instruction="...", url="...") — autonomous browsing loop. Use for simple tasks. For complex multi-step flows, use atomic tools directly — you have better vision and reasoning.

Workflow

For every step:

1. Screenshot — take a screenshot and Read it to see the page
2. Analyze — identify what's on screen (login form? search box? results? CAPTCHA?)
3. Act — use navvi_find to get coordinates, then navvi_click/navvi_fill/navvi_press
4. Verify — screenshot again to confirm the action worked

Coordinate workflow (CRITICAL)

• ALWAYS use navvi_find(selector="...") to get (x, y) coordinates
• NEVER guess coordinates from screenshots — browser chrome offsets make pixel positions unreliable
• navvi_find returns screen-ready coordinates that work directly with navvi_click/navvi_fill

CAPTCHAs

• If you detect a CAPTCHA (Arkose Labs, FunCaptcha, hCaptcha), call navvi_vnc and tell the user to solve it manually
• For reCAPTCHA v2: try clicking the checkbox first — Camoufox often passes it

Login

• Use navvi_login(service="...") for sites with stored credentials
• If autofill fails, use navvi_find to locate fields manually
• NEVER type or display passwords — use navvi_creds(action="autofill")

Credentials

• Require NAVVI_GPG_PASSPHRASE in .mcp.json env
• If gopass is disabled, tell the user to add "NAVVI_GPG_PASSPHRASE": "any-random-string" to their MCP config

Related Skills

• navvi-login — dedicated login flow with 2FA handling
• navvi-signup — account creation with credential generation

Milestones

Record milestones for significant moments during browsing — not every click, but meaningful achievements:

• First visit to a new service: navvi_milestone(action="add", event="First visit to {domain}", screenshot=true, tags="first,{service}")
• Posted content (comment, reply, post): include the FULL text in detail:

  navvi_milestone(action="add", event="Posted on {service}", detail="Subreddit: r/selfhosted\n\nFull text:\n\"Had the same issue with SPF records...\"", url="https://...", tags="{service},comment", screenshot=true)
  

• Received interaction (like, reply, notification): navvi_milestone(action="add", event="First reply received on {service}", screenshot=true, tags="first,{service},interaction")
• Profile changes: bio updates, avatar, settings

Always include full content text — this maintains persona voice consistency across sessions.

Flow Recipes (auto-improving workflows)

After navvi_browse completes, check its response footer:

If footer says "No stored flow" — save it for next time:

1. Summarize the flow as a playbook — you have full context of what just happened, so describe the steps, selectors used, expected URLs at each stage, and any caveats you encountered
2. Call navvi_flow(action="save") with the verified recipe:

   navvi_flow(action="save", flow="domain.com/action-name",
              description="One-line description",
              steps='[{"action":"navigate","url":"https://...","expected_url":"domain.com"},
                      {"action":"click","selector":"a[text=Dashboard]","expected_url":"domain.com/dashboard"},
                      {"action":"fill","selector":"input#search","value":"query"}]',
              caveats='["Must be logged in first"]',
              refs='["domain.com/login"]')
   

3. The MCP runs a judge (Pass 2) to verify your playbook against the raw action log before storing

If footer shows a flow was used:

• The flow was loaded automatically. Confidence updates happen inside navvi_browse.
• No action needed from you.

Step format for recipes:

Each step should include:

• action: navigate, click, fill, press, scroll, autofill
• selector: CSS selector (for click/fill)
• expected_url: URL or domain expected after this step (for checkpoints)
• detail: brief note about what this step does
• value: text to type (fill only)
• key: key name (press only)
• url: target URL (navigate only)

Response Format

When done, return:

1. Brief summary of what you did
2. Key findings or extracted data
3. Path to final screenshot
4. Any issues encountered

Keep the summary concise — the user doesn't need to see every click.