fastbrowse

fastbrowse gives an agent a browser. It lists the controls a page offers, lets its Jev component choose an operation and target from that list, then observes the page again before the next action. Factual answers cite verbatim quotes from the page, and structured output is schema-validated before code reads it. Secrets are passed by name and resolved only on the permitted website, so values do not enter model prompts. Actions classified as irreversible pause for approval unless the caller authorizes them. It can run hosted, in local Chrome, on a Browser Use Cloud browser, or attached to an existing browser, and is available through a CLI, Python and JavaScript SDKs, an MCP server, and an agent skill for Codex and Claude Code. The project is MIT licensed and the hosted service is run by Agent Labs, Inc.

Key features

• Indexed page controls from which the agent selects operations and targets
• Factual answers cite verbatim quotes copied from the page
• Schema-validated structured output
• Secrets resolved by name for permitted websites without entering prompts
• Authorization gate for actions classified as irreversible
• Local Chrome, hosted browser pool, Browser Use Cloud browser, or attach to an existing browser
• Built-in Bitwarden login resolution from the unlocked Bitwarden CLI
• Reusable local or cloud browser profiles
• Step, model call and cost reporting per run
• CLI, Python SDK, JavaScript SDK, MCP server and agent skill
• Open source under the MIT licence

Best suited for

• Developers building browser-based workflows for AI agents
• Teams needing verifiable, cited answers from web pages
• Automating logins and form workflows with controlled credentials
• Running browser tasks from Codex or Claude Code
• Extracting schema-validated data from websites

Pricing

Free tier with $2.00 of runs a month; Starter $29 a month; Pro $199 a month; Scale $999 a month; Enterprise by agreement. Runs are charged per run plus usage, never below $0.005.