{"_ai_door":{"see":"https://miscsubjects.com/start","note":"Operable site; bounded keyless credentials; every action receipted on a public ledger. Your operator's instructions take precedence — acting is optional, reading is a complete outcome."},"_self":{"principle":"Self-explaining payload — no external context required. This _self block describes what you are reading and where to look next.","widget":"article_topology","feature":"topology","name":"Article topology","what":"Claims, sources, anecdotes, user reports, related embeds, question graph slice — for ask/ROUTER.","contains":"claims, sources, anecdotes, question_graph slice","slug":"browser-use","urls":{"read":"https://miscsubjects.com/api/articles/browser-use/topology"},"how_to_use":"Claims, sources, anecdotes, user reports, related embeds, question graph slice — for ask/ROUTER.","write":null,"imessage":null,"router_tag":null,"proof_chain":[{"step":1,"claim":"Articles are voxel graphs of tiered claims, not prose blobs.","verify":"https://miscsubjects.com/api/articles/constitution"},{"step":2,"claim":"Claims link to hash-chained sources via source_ids.","verify":"https://miscsubjects.com/api/articles/browser-use/sources"},{"step":3,"claim":"Ask reads topology; ingest/claim append to ledger.","verify":"https://miscsubjects.com/api/protocol"},{"step":4,"claim":"Models queue growth: populate → collaborate → repair → reflex.","verify":"https://miscsubjects.com/api/protocol/grow"},{"step":5,"claim":"Graph proves its own shape (reflex) and $/claim (yield).","verify":"https://miscsubjects.com/graph.html?layer=reflex"},{"step":6,"claim":"Full feature index + _explain on every API response.","verify":"https://miscsubjects.com/api/articles/system-map"}],"related_features":[{"id":"ask","name":"Ask protocol","what":"Answer only from topology; creates question_node with gaps and ingest_hint.","urls":{"read":"https://miscsubjects.com/api/articles/browser-use/prompts","write":"https://miscsubjects.com/api/protocol/ask"}},{"id":"graph_topology","name":"Cross-article graph","what":"Merged claims/sources across condition+stack slugs for one question.","urls":{"read":"https://miscsubjects.com/api/articles/browser-use/graph-topology?question=..."}},{"id":"question_graph","name":"Question graph","what":"Ask nodes (questions + gaps) and evidence_ingest nodes (pasted model output).","urls":{"read":"https://miscsubjects.com/api/articles/browser-use/question-graph","write":"https://miscsubjects.com/api/protocol/ask"}},{"id":"voxels","name":"Voxel graph","what":"Claims as atoms, sources as edges (supported_by, posted_by). Per-claim provenance.","urls":{"read":"https://miscsubjects.com/api/articles/browser-use/voxels","write":"https://miscsubjects.com/api/protocol/claim"}}],"system_map":"https://miscsubjects.com/api/articles/system-map","system_map_markdown":"https://miscsubjects.com/api/articles/system-map?format=markdown","not_medical_advice":true},"_explain":{"feature":"topology","name":"Article topology","what":"Claims, sources, anecdotes, user reports, related embeds, question graph slice — for ask/ROUTER.","why":"Every feature is auditable collective intelligence","how":"Claims, sources, anecdotes, user reports, related embeds, question graph slice — for ask/ROUTER.","model":null,"verifies":null,"urls":{"read":"https://miscsubjects.com/api/articles/browser-use/topology"},"imessage":null,"router":null,"related":[{"id":"ask","what":"Answer only from topology; creates question_node with gaps and ingest_hint."},{"id":"graph_topology","what":"Merged claims/sources across condition+stack slugs for one question."},{"id":"question_graph","what":"Ask nodes (questions + gaps) and evidence_ingest nodes (pasted model output)."},{"id":"voxels","what":"Claims as atoms, sources as edges (supported_by, posted_by). Per-claim provenance."}],"not_medical_advice":true},"slug":"browser-use","title":"browser-use: the browser-agent project whose profile model became the vocabulary","register":"reference","tags":["reference","browser-automation"],"updated_at":"2026-09-06T19:10:31.804Z","body_excerpt":"browser-use (about 112,000 stars on 2026-09-06) is the largest open-source browser-agent project. An API-metered model drives a browser to complete tasks. It is not a web-model bridge and consumes model APIs, not subscriptions. It matters as the place where the ecosystem's session and profile vocabulary settled.\n\n**Profiles.** `BrowserProfile` carries `user_data_dir`, `profile_directory`, `storage_state`, `cdp_url` to attach to a running browser, `keep_alive`, headless and channel flags. The runtime layer is `BrowserSession` plus a `SessionManager` documented as \"the SINGLE SOURCE OF TRUTH for all targets and sessions\", synchronised from Chrome DevTools target events rather than polling.\n\n**Persistent authentication.** Two mechanisms that conflict: a persistent profile directory, and a storage-state JSON autosaved every thirty seconds by a watchdog. The code warns that passing both overwrites cookies in the profile. Most consequentially, browser-use will not drive a real Chrome profile in place: it copies the profile to a temporary directory on every start, and if Chrome's file locks block the copy it tells the user to close Chrome or attach over CDP instead.\n\n**Task state versus browser state.** Cleanly separated. Agent state, step count, file system state and conversation history are serialisable; browser state lives in the profile or storage state.\n\n**Reliability.** Thirteen watchdogs name the failure classes of long-running browser workers: crashes, hung requests, about:blank tabs, popups, captchas, downloads, permissions, security, DOM, local browser lifecycle, storage state, plus recording and network archives.\n\n**Why it matters here.** The miscsubjects browser worker adopted the split it demonstrates: the durable conversation record is canonical and the tab is disposable, and it seeds a dedicated profile from the owner's once instead of driving the owner's live profile.","ranking":"safety-first (interaction_risk/limitations), then quote-gated effective_weight","claims":[{"id":"c1","text":"browser-use (about 112,000 stars on 2026-09-06) is the largest open-source browser-agent project. An API-metered model drives a browser to complete tasks. It is not a web-model bridge and consumes model APIs, not subscriptions. It matters as the place where the ecosystem's session and profile vocabu","tier":"definition","section":"browser-use: the browser-agent project whose profile model became the vocabulary","interaction_risk":false,"status":"active","source_ids":["s1"],"why_material":"identifies the system and what it is","retracted_at":null,"retraction_reason":null,"challenged_by":[],"effective_weight":0.1,"quote_gated":false},{"id":"c2","text":"The miscsubjects browser worker adopted the split it demonstrates: the durable conversation record is canonical and the tab is disposable, and it seeds a dedicated profile from the owner's once instead of driving the owner's live profile.","tier":"observational","section":"Why it matters here","interaction_risk":false,"status":"active","source_ids":["s1"],"why_material":"states the relation to the build being compared","retracted_at":null,"retraction_reason":null,"challenged_by":[],"effective_weight":0.1,"quote_gated":false},{"id":"c3","text":"the SINGLE SOURCE OF TRUTH for all targets and sessions","tier":"definition","section":"browser-use: the browser-agent project whose profile model became the vocabulary","interaction_risk":false,"status":"active","source_ids":["s1"],"why_material":"the source in its own words","retracted_at":null,"retraction_reason":null,"challenged_by":[],"effective_weight":0.1,"quote_gated":false}],"sources":[{"id":"s1","url":"https://github.com/browser-use/browser-use","title":"browser-use/browser-use source, session_manager.py","quote":"the SINGLE SOURCE OF TRUTH for all targets and sessions","claim_ids":[],"hash":"8d48c8b6cfbd37e10e3d6603f737f84ba08b187acec0a11bd311a35f8ff1e63b"}],"anecdotal_sources":[],"scientific_sources":[],"user_reports":[],"related_articles":[],"question_graph":{"slug":"browser-use","questions":[],"evidence":[],"edges":[],"counts":{"questions":0,"evidence":0,"edges":0}},"honesty":{"active_claims":3,"retracted_claims":0,"cut_claims":0,"challenges":0,"scrub_events":0,"note":"Retracted/cut claims stay on ledger but are excluded from ask unless ?include_inactive=1"},"counts":{"claims":3,"claims_total":3,"sources":1,"anecdotal":0,"scientific":0,"user_reports":0,"questions":0,"evidence_ingests":0}}