fix: headless UA override — platform-agnostic Akamai bypass#26
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fix: headless UA override — platform-agnostic Akamai bypass#26
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Headless Chromium embeds "HeadlessChrome/..." in the default User-Agent. CDNs like Akamai reject these requests at the HTTP/2 layer with ERR_HTTP2_PROTOCOL_ERROR before any JS stealth patches can run. Override the context UA in headless mode with a clean Chrome string that uses the actual browser version and adapts the platform token to the host OS (macOS/Linux/Windows). Recovers 7 Akamai-fronted sites that were previously "unreachable" in headless mode (28/50 → ~35/50 expected).
drewstone
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Mar 19, 2026
Unpublished since 0.10.0: - feat: screenX/screenY CDP fix for Cloudflare Turnstile (#29) - fix: boost output tokens near max turns (#28) - feat: canvas fingerprint noise + stealth patches (#27) - fix: headless UA override — platform-agnostic Akamai bypass (#26) - fix: nightly CI — Xvfb headed stealth + system Chrome (#25) - feat: retry malformed JSON with minimal context (#24) - feat: three-tier history compression -22% cost (#23) - feat: headless passthrough + Docker benchmark runner (#22) - feat: WebVoyager + WebArena benchmark adapters (#20) - fix: graceful recovery from execute wall-clock timeouts (#21) - feat: showcase command for marketing asset capture (#18) - feat: research pipeline + speed-v1 experiment results (#19) - feat: design rip, compare, and extract-tokens overhaul (#17) - feat: CDP connection, browser profiles, and asset downloader (#16)
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Summary
HeadlessChrome/...in User-Agent by defaultERR_HTTP2_PROTOCOL_ERROR) before any JS stealth patches runTest plan
pnpm buildpasses