Crawler operator
Anchor Browser
In short
Anchor Browser leases managed Chromium sessions to computer-use agents, from USD 50 a month for the Starter tier that adds CAPTCHA bypass. A session carries a Web Bot Auth signature only if the customer switches it on and holds the USD 2,000 Growth plan or Enterprise. Anchor was among the launch partners of Cloudflare's signed-agent programme in August 2025.
- Type
- Crawler operator
- Operator
- Anchor
- Homepage
- anchorbrowser.io
- In one line
- Cloud browser infrastructure for computer-use agents that can sign sessions with Cloudflare Web Bot Auth on its upper plans, and also sells stealth fingerprinting, proxies, CAPTCHA bypass and a pay-on-success web unlocker.
- Last read
- 2026-11-05
What Anchor Browser does for this layer
From the vendor's own pages
Anchor Browser signs all HTTP requests in a session as Anchor Browser when the session setting web_bot_auth.active is true; the setting defaults to false. (docs.anchorbrowser.io) Anchor's pricing table lists "Cloudflare verified browser agents" only on the Growth plan at USD 2,000 a month and on Enterprise, not on Free or Starter (USD 50 a month). (docs.anchorbrowser.io) Anchor's Free plan gives USD 5 in credits a month with up to 5 concurrent browsers; automated captcha bypass and geolocation proxies start on Starter. (docs.anchorbrowser.io) Anchor's docs index lists Extra Stealth Mode for anti-detection and fingerprint protection, bring-your-own proxy, dedicated sticky IPs, Anchor VPN and a Web Unlocker for CAPTCHA- and bot-protected pages that is "billed only on success". (docs.anchorbrowser.io)
Anchor's homepage cost calculator prices browser time at USD 0.09 an hour, proxy traffic at USD 8.00 per GB and AI steps at USD 0.01 each. (anchorbrowser.io)
Claims the vendor makes about itself
Anchor describes its product as "fully managed, humanized chromium instances that can assume any identity and access any website". (anchorbrowser.io)
Reported by a third party
Cloudflare named Anchor Browser in its first signed-agent cohort on 2025-08-28, quoting Anchor's CEO that the partnership lets developers "ship verified browser agents". (blog.cloudflare.com, dated 2025-08-28)
What our crawl saw
A GET for anchorbrowser.io/.well-known/http-message-signatures-directory returned HTTP 404 on 2026-11-05, and the Web Bot Auth doc names no Signature-Agent host. (anchorbrowser.io)
Products and plans
| Product | What it does | Price model | From | As of |
|---|---|---|---|---|
| Anchor cloud browsers | Managed Chromium sessions for agents with stealth, proxies, identities with MFA and optional Web Bot Auth. | subscription plus credits | USD 50 | 2026-11-05 |
| Web Unlocker | Sessionless fetch of rendered HTML from CAPTCHA- and bot-protected pages, billed on success. | |||
| OmniConnect | Authentication for computer-use agents, announced on the homepage. | |||
Standards
| Standard | Status | Evidence |
|---|---|---|
| RFC 9309 (robots.txt) | No statement | No robots.txt page in the docs index (2026-11-05). |
| Web Bot Auth | Supports | Opt-in web_bot_auth.active session flag, default false. (docs.anchorbrowser.io) |
| Cloudflare verified bots | Supports | Pricing lists Cloudflare verified browser agents on Growth and Enterprise. (docs.anchorbrowser.io) |
Our checks
| Check | Result | Method | Date |
|---|---|---|---|
| Homepage fetch | HTTP 200 | GET with the crawl user agent after a robots.txt check | 2026-11-05 |
| Web Bot Auth key directory | HTTP 404, text/html | GET https://anchorbrowser.io/.well-known/http-message-signatures-directory with the crawl user agent after a robots.txt check | 2026-11-05 |
What Anchor Browser does not do
- Anchor does not sign sessions unless the customer turns web_bot_auth on, and signing is limited to the Growth and Enterprise plans.
- Anchor publishes no robots.txt policy or token for its sessions (docs index checked 2026-11-05).
Related pages on this site
Sources
- anchorbrowser.io
- Anchor - Secure Infrastructure for Computer Use Agents
- Cloudflare Web Bot Auth | Anchor Browser docs
- Pricing | Anchor Browser docs
- Anchor Browser documentation index (llms.txt)
- The age of agents: cryptographically recognizing agent traffic | Cloudflare Blog
- Anchor key directory probe
Last reviewed 2026-11-05