DeepSeek Worker

Send a prompt to DeepSeek via browser and return the response.

Environment

• URL: https://chat.deepseek.com
• Browser: Chrome on localhost:9222 (managed by local-browser-tools)
• Login: Required — session persisted in ~/.cache/browser-tools profile
• Tools: browser-start.js, browser-nav.js, browser-eval.js, browser-screenshot.js

Input

prompt: string        # The text to send to DeepSeek
task_type: string     # qa | summary | translation | rewrite | extraction | comparison | brainstorming | analysis

Output

Always output this JSON block first:

{
  "site": "deepseek",
  "task_type": "<task_type>",
  "status": "success | partial | error",
  "answer": "<extracted response text>",
  "retry_count": 0,
  "elapsed_ms": 0,
  "error_reason": null
}

Then follow with a short human-readable summary (2–3 sentences max).

Workflow

Step 1 — Start browser

node ~/.pi/agent/skills/local-browser-tools/browser-start.js

Expected: ✓ Chrome already running on :9222 or ✓ Chrome started on :9222

If fails: return error status, stop.

Step 2 — Navigate to DeepSeek

node ~/.pi/agent/skills/local-browser-tools/browser-nav.js https://chat.deepseek.com

Take a screenshot and verify:

• Textarea input box is visible with placeholder "Message DeepSeek"
• Not showing a login form

If login page appears: return error_reason: "login_required", stop.

Step 3 — Locate input box

DeepSeek uses a <textarea> with placeholder="Message DeepSeek". Note: no aria-label.

Check:

!!document.querySelector('textarea[placeholder="Message DeepSeek"]')

Fallback selectors in order:

1. textarea[placeholder="Message DeepSeek"]
2. textarea

If no selector works after 3 attempts: trigger retry.

Step 4 — Insert prompt

DeepSeek uses React — setting textarea.value directly does NOT update React's internal state and will cause "Message is empty" on send. Must use nativeInputValueSetter:

​``javascript (function() { const input = document.querySelector('textarea[placeholder="Message DeepSeek"]') || document.querySelector('textarea'); if (!input) return "NOT_FOUND"; input.focus(); const nativeInputValueSetter = Object.getOwnPropertyDescriptor( window.HTMLTextAreaElement.prototype, 'value' ).set; nativeInputValueSetter.call(input, ""); nativeInputValueSetter.call(input, PROMPT_TEXT); input.dispatchEvent(new Event("input", { bubbles: true })); return input.value; })() ​``

Verify returned value matches the intended prompt. If mismatch: retry.

Take a screenshot to confirm text appears in the textarea.

Step 5 — Send

DeepSeek's send button is a div with role="button", NOT a native button element. Ctrl+Enter adds a newline — do NOT use it.

Click the send button: ​``javascript Array.from(document.querySelectorAll('[role="button"]')) .filter(b => { const cls = typeof b.className === 'string' ? b.className : ''; return cls.includes('ds-icon-button') && !cls.includes('ds-icon-button--disabled'); }) .pop() ?.click() ​``

After sending, take a screenshot to confirm the message bubble appears.

Step 6 — Wait for response

Poll every 3 seconds, maximum 120 seconds total. Do NOT use fixed sleep.

Spinner selectors are unreliable. Use response length stability as the primary completion signal:

1. After sending, start polling response text length
2. Take a screenshot on the first poll where length > 0 — save as "thinking" screenshot
3. Treat response as complete when length is non-zero and unchanged across 2 consecutive polls — save as "response complete" screenshot

Response extraction for polling:

(function() {
  const msgs = document.querySelectorAll('[class*="message"], [class*="ds-markdown"], [class*="chat"]');
  if (msgs.length > 0) return msgs[msgs.length - 1].innerText?.trim()?.length || 0;
  return 0;
})()

If 120 seconds pass with no stable response: trigger retry.

Step 7 — Extract response

​``javascript (function() { const direct = document.querySelector('div.ds-markdown.ds-assistant-message-main-content'); if (direct) return direct.innerText?.trim(); const para = document.querySelector('p.ds-markdown-paragraph'); if (para) return para.innerText?.trim(); return "EXTRACTION_FAILED"; })() ​``

Validate the result:

• Must contain text
• Must not equal the original prompt
• Must not be UI chrome text (e.g. "Message DeepSeek", "DeepThink", "Search")

If validation fails: trigger retry.

Retry Policy

• Maximum retries: 2
• On each retry: re-navigate to https://chat.deepseek.com before retrying
• After 2nd failure: return status: "error" with error_reason explaining which step failed

Selector Change Resilience

DeepSeek uses hashed class names (e.g. _27c9245, c3ecdb44) that change between deployments. Do NOT rely on these. If selectors stop working:

1. Use browser-eval.js to find all textarea, [role="button"], and elements with visible text
2. Identify by placeholder text, role, or visible label
3. Use the working selector for this session

Example Output

{
  "site": "deepseek",
  "task_type": "analysis",
  "status": "success",
  "answer": "Here is my analysis...",
  "retry_count": 0,
  "elapsed_ms": 35000,
  "error_reason": null
}