zxfccmm4/obsidian-opencode-knowledge/opencli-browser

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Make websites accessible for AI agents. Navigate, click, type, extract, wait — using Chrome with existing login sessions. No LLM API key needed.

Install

npx vskill@latest install zxfccmm4/obsidian-opencode-knowledge/opencli-browser

SKILL.md

OpenCLI Browser — Browser Automation for AI Agents

Control Chrome step-by-step via CLI. Reuses existing login sessions — no passwords needed.

Prerequisites

bash
opencli doctor    # Verify extension + daemon connectivity

Requires: Chrome running + OpenCLI Browser Bridge extension installed.

Critical Rules

  1. ALWAYS use `state` to inspect the page, NEVER use `screenshot` — state returns structured DOM with [N] element indices, is instant and costs zero tokens.
  2. ALWAYS use `click`/`type`/`select` for interaction, NEVER use `eval` to click or type — eval "el.click()" bypasses scrollIntoView and CDP click pipeline.
  3. Verify inputs with `get value`, not screenshots — after type, run get value <index> to confirm.
  4. Run `state` after every page change — after open, click (on links), scroll, always run state.
  5. Chain commands aggressively with `&&` — combine commands to reduce overhead.
  6. `eval` is read-only — use eval ONLY for data extraction, never for clicking, typing, or navigating.
  7. Minimize total tool calls — plan your sequence before acting.
  8. Prefer `network` to discover APIs — most sites have JSON APIs. API-based adapters are more reliable than DOM scraping.

Core Workflow

  1. Navigate: opencli browser open <url>
  2. Inspect: opencli browser state → elements with [N] indices
  3. Interact: use indices — click, type, select, keys
  4. Wait (if needed): opencli browser wait selector ".loaded" or wait text "Success"
  5. Verify: opencli browser state or opencli browser get value <N>
  6. Repeat: browser stays open between commands
  7. Save: write a JS adapter to ~/.opencli/clis/<site>/<command>.js

Commands

Navigation
bash
opencli browser open <url>              # Open URL (page-changing)
opencli browser back                    # Go back (page-changing)
opencli browser scroll down             # Scroll (up/down, --amount N)
Inspect (free & instant)
bash
opencli browser state                   # Structured DOM with [N] indices — PRIMARY tool
opencli browser screenshot [path.png]   # Save visual to file — ONLY for user deliverables
Get (free & instant)
bash
opencli browser get title               # Page title
opencli browser get url                 # Current URL
opencli browser get text <index>        # Element text content
opencli browser get value <index>       # Input/textarea value (use to verify after type)
opencli browser get html                # Full page HTML
opencli browser get html --selector "h1" # Scoped HTML
opencli browser get attributes <index>  # Element attributes
Interact
bash
opencli browser click <index>           # Click element [N]
opencli browser type <index> "text"     # Type into element [N]
opencli browser select <index> "option" # Select dropdown
opencli browser keys "Enter"            # Press key (Enter, Escape, Tab, Control+a)
Wait
bash
opencli browser wait time 3                       # Wait N seconds
opencli browser wait selector ".loaded"            # Wait until element appears
opencli browser wait selector ".spinner" --timeout 5000  # With timeout
opencli browser wait text "Success"                # Wait until text appears
Extract (free & instant, read-only)
bash
opencli browser eval "document.title"
opencli browser eval "JSON.stringify([...document.querySelectorAll('h2')].map(e => e.textContent))"
Network (API Discovery)
bash
opencli browser network                  # Show captured API requests
opencli browser network --detail 3       # Show full response body of request #3
opencli browser network --all            # Include static resources
Session
bash
opencli browser close                   # Close automation window

Action Chaining

Always chain when possible — fewer tool calls = faster completion:

bash
# GOOD: open + inspect in one call
opencli browser open https://example.com && opencli browser state
 
# GOOD: fill form in one call
opencli browser type 3 "hello" && opencli browser type 4 "world" && opencli browser click 7
 
# GOOD: click + wait + state in one call
opencli browser click 12 && opencli browser wait time 1 && opencli browser state

Tips

  1. Always `state` first — never guess element indices
  2. Sessions persist — browser stays open between commands
  3. Use `eval` for data extraction — eval "JSON.stringify(...)" is faster than multiple get calls
  4. Use `network` to find APIs — JSON APIs are more reliable than DOM scraping
  5. Alias: opencli op is shorthand for opencli browser

Troubleshooting

ErrorFix
"Browser not connected"Run opencli doctor
"attach failed: chrome-extension://"Disable 1Password temporarily
Element not foundopencli browser scroll down && opencli browser state
Stale indices after page changeRun opencli browser state again

Security

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