Scalebrowser Blog
Challenges · Oct 17, 2026 · 5 min readSlider captcha: measure the gap instead of guessing
How an AI agent solves a slider captcha by measuring the gap first: GeeTest v3 at 112 pixels in one drag, GeeTest v4 in 2 of 2 runs, the rotation variant not at all.
Sign in · Oct 16, 2026 · 6 min readPlaywright storage state: what a persistent profile keeps
What Playwright's storage state saves in 2026, the 4 things a restored state still lacks next to a persistent profile, and how a session moves between machines.
Sign in · Oct 15, 2026 · 5 min readPermission prompts in automation: 14 kinds a browser draws
Why automation cannot see Chrome's permission prompts, which 14 kinds a browser draws beside the page, and which 3 an AI agent should never answer.
Detection · Oct 14, 2026 · 6 min readFont fingerprinting: 130 of 187 fonts drawn but not listed
Font fingerprinting compares the fonts a browser lists with the fonts it draws. Our persona list left 130 of 187 families unlisted; voices follow the same rule.
Use cases · Oct 13, 2026 · 7 min readAI job applications: Workday wants an account by step 3
What an AI agent meets when it applies to jobs: we opened real postings on Greenhouse, Lever, Workday, LinkedIn, Indeed and Upwork and counted every step.
Use cases · Oct 13, 2026 · 7 min readDirectory submission: 100 sent, 32 live, 9 followed links
We collected 1,166 directories and lists, dropped 597, and let an AI agent submit 100. Which entries went live, which links count and what it cost.
Sign in · Oct 13, 2026 · 5 min readTemporary email for verification: 1 address per profile
Why temporary email fails for agent sign-ups, and how a catch-all domain gives every profile 1 address of its own, read outside the browser within 60 seconds.
Use cases · Oct 13, 2026 · 6 min readFacebook Marketplace API doesn't exist: find deals anyway
Facebook Marketplace has no public API for buyers or sellers. What an AI agent does instead: search, watch for deals, list items, and what a visitor sees signed out.
Use cases · Oct 13, 2026 · 6 min readInstagram MCP: post and reply with an AI agent, no API
What an Instagram MCP server can do: the official API covers professional accounts only, 100 posts in 24 hours, and a signed-in browser covers any account.
Use cases · Oct 13, 2026 · 9 min readLinkedIn MCP: let an AI agent work LinkedIn without the API
How an AI agent works LinkedIn through an MCP server: what the official API allows, what a browser signed in as you reaches, and what we measured.
Use cases · Oct 13, 2026 · 7 min readMarket research AI misses Reddit and X: 0 of 7 links read
Why AI deep research misses Reddit, X and LinkedIn, and what an agent in a browser signed in as you reads instead: 4 of 4 Reddit threads in our test.
Use cases · Oct 13, 2026 · 6 min readMidjourney API: why every one you find is unofficial
Midjourney grants an API only in rare cases. What the unofficial APIs are, how an AI agent works the Midjourney website, and what we measured on 11 October 2026.