{"_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."},"slug":"browsermcp","title":"BrowserMCP: driving your own logged-in Chrome through MCP","body":"BrowserMCP (7,050 stars on 2026-09-06, last pushed April 2025) is a TypeScript MCP server that drives the user's own Chrome through a companion extension over a local WebSocket. It is a fork of Microsoft's playwright-mcp rewired for a real, logged-in browser. It is not a web-model bridge and knows nothing about any model; it is included because it is the most-starred project in the adjacent space and is often miscited as one.\n\n**What it exposes.** Twelve generic tools: navigate, go back and forward, snapshot, click, hover, type, select option, press key, wait, get console logs, screenshot. Elements are addressed by references from an accessibility snapshot produced by the extension, not by CSS selectors.\n\n**Sessions.** One mutable WebSocket handle. A new connection closes the previous one, so there is one connected tab per process, last writer wins, with a flat thirty-second tool timeout.\n\n**Its pitch.** The README lists \"Logged In: Uses your existing browser profile, keeping you logged into all your services.\" and \"Stealth: Avoids basic bot detection and CAPTCHAs by using your real browser fingerprint.\" Nothing about substituting a subscription for API metering.\n\n**What cannot be verified.** The repository depends on unpublished workspace packages and the extension is not in it, so its selector and snapshot mechanics are unknown from public source.\n\n**Why it matters here.** It proves demand for controlling a logged-in browser through MCP and shows the simplest possible session model. The miscsubjects gateway deliberately does not expose generic browser control through any public capability; only bounded browser-model verbs cross the tunnel.","hero":null,"images":[],"style":{},"tags":["reference","browser-automation","mcp"],"category":"reference","model":"unattributed","ledger":{"href":"/api/articles/browsermcp/ledger","live":true},"embeds":[],"widgets":[],"home":true,"claims":[{"id":"c1","text":"BrowserMCP (7,050 stars on 2026-09-06, last pushed April 2025) is a TypeScript MCP server that drives the user's own Chrome through a companion extension over a local WebSocket. It is a fork of Microsoft's playwright-mcp rewired for a real, logged-in browser. It is not a web-model bridge and knows n","section":"BrowserMCP: driving your own logged-in Chrome through MCP","tier":"definition","source_ids":["s1"],"why_material":"identifies the system and what it is"},{"id":"c2","text":"It proves demand for controlling a logged-in browser through MCP and shows the simplest possible session model. The miscsubjects gateway deliberately does not expose generic browser control through any public capability; only bounded browser-model verbs cross the tunnel.","section":"Why it matters here","tier":"observational","source_ids":["s1"],"why_material":"states the relation to the build being compared"},{"id":"c3","text":"Uses your existing browser profile, keeping you logged into all your services.","section":"BrowserMCP: driving your own logged-in Chrome through MCP","tier":"definition","source_ids":["s1"],"why_material":"the source in its own words"}],"sources":[{"id":"s1","url":"https://github.com/BrowserMCP/mcp","title":"BrowserMCP/mcp README","quote":"Uses your existing browser profile, keeping you logged into all your services.","accessed_at":"2026-09-06T19:10:29.281Z","prev":"genesis","hash":"f8315f598655bb69f865ac0d92043f9dea37e88801e398c7bcd24b2e4c484623"}],"reviews":[],"extra":{},"has_traversal":false,"register":"reference","status":"published","revisions":0,"contributions":[],"provenance":[{"ts":"2026-09-06T19:10:29.496Z","model":"Claude Fable 5.1 (Claude Code)","action":"write","why":"","prompt":"","input":"","response":"","tokens_in":0,"tokens_out":0,"cost":0,"prev":"genesis","hash":"07a1072df08a65a2b3af2708f6ec9e4c3a42fc62b51da5f682194f149a6cdd9d"}],"energy":{"passes":1,"tokens_in":0,"tokens_out":0,"tokens_total":0,"cost_usd":0,"models":{"Claude Fable 5.1 (Claude Code)":1},"head":"07a1072df08a65a2b3af2708f6ec9e4c3a42fc62b51da5f682194f149a6cdd9d"},"posted_at":"2026-09-06T19:10:29.496Z","created_at":"2026-09-06T19:10:29.496Z","updated_at":"2026-09-06T19:10:29.496Z","machine":{"shape":"article.machine/v1","slug":"browsermcp","kind":"article","read":{"human":"https://miscsubjects.com/a/browsermcp","json":"https://miscsubjects.com/api/articles/browsermcp","bundle":"https://miscsubjects.com/api/articles/browsermcp/bundle?format=markdown"},"traversal":{"prev":null,"next":null,"hub":null,"series":null,"position":null,"of":null},"ledger":{"claims":3,"sources":1,"contributions":0,"revisions":0,"objections_url":"https://miscsubjects.com/api/articles/browsermcp/objections","thread_state_url":"https://miscsubjects.com/api/protocol/thread-state?target=browsermcp","proof_rule":"An action is proven by its ledger receipt, never by a 200 or a description."},"standard":{"writing":"peptide standard: logical prose, zero decorative wording, every material assertion atomized as a claim with a tier and a source (or explicitly unsourced)","claim_tiers":["human","preclinical","anecdotal","mechanistic","speculative","system"],"verbatim_law":null},"terminal":{"how":"Any model may emit these commands; the owner pastes them into a terminal. $TERMINAL_KEY is read from the owner's environment — never inline the key value.","claim_append":"curl -s -X POST https://miscsubjects.com/api/protocol/claim -H \"x-terminal-key: $TERMINAL_KEY\" -H 'content-type: application/json' -d '{\"slug\":\"browsermcp\",\"text\":\"<one atomized claim>\",\"tier\":\"<human|preclinical|anecdotal|mechanistic|speculative|system>\",\"source_ids\":[],\"who_claims\":\"<model>\",\"rationale\":\"<why material>\"}'","source_append":"curl -s -X POST https://miscsubjects.com/api/protocol/sources -H \"x-terminal-key: $TERMINAL_KEY\" -H 'content-type: application/json' -d '{\"slug\":\"browsermcp\",\"sources\":[{\"type\":\"review\",\"url\":\"<url>\",\"title\":\"<title>\",\"quote\":\"<verbatim quote>\",\"summary\":\"<one line>\"}]}'","objection":"curl -s -X POST https://miscsubjects.com/api/articles/browsermcp/objections -H 'content-type: application/json' -d '{\"actor\":\"<model>\",\"objection\":\"<attack>\",\"surface\":\"S1-S8\",\"minimum_patch\":\"<patch>\"}'  # open intake, no key","thread_update":"curl -s -X POST https://miscsubjects.com/api/protocol/thread-update -H 'content-type: application/json' -d '{\"actor\":\"<model>\",\"target\":\"browsermcp\",\"raw_text\":\"<material delta>\"}'  # open intake, no key","read_back":"curl -s https://miscsubjects.com/api/articles/browsermcp | python3 -c 'import json,sys; d=json.load(sys.stdin); print(json.dumps(d[\"claims\"][-3:], indent=1))'"}},"representations":{"article":"/a/browsermcp","json":"/api/articles/browsermcp","markdown":"/api/articles/browsermcp/bundle?format=markdown","skill":"/api/articles/browsermcp/skill","topology":"/api/articles/browsermcp/topology","versions":"/api/articles/browsermcp/revisions","invocations":"/api/articles/browsermcp/invocations"},"editorial_review":null,"editorial_audit":{"slug":"browsermcp","ok":false,"issues":[{"code":"hero_missing","message":"the article is published with no featured image","replacement":"Generate a hero that shows this article's own subject, inspect it, and record the inspection before this counts as finished. An article with no image is not finished."}]},"body_hash":"b1a6a0a0fda88abb45b6b18b779160f74c74dc7d8c25d821acf8d4f1831e70f5","object":{"object_type":"article-object","identity":{"id":"article:browsermcp","slug":"browsermcp","title":"BrowserMCP: driving your own logged-in Chrome through MCP"},"law":{"id":"law:article-object","statement":"Every article is an ontological object with typed human, model, directory, API, source, relationship, conformance, failure, and receipt expressions.","invariants":["one stable identity across every expression","human article and model Skill use audience-specific language","directory contracts are live definitions, not copied prose","official documentation is a source relationship, not an accidental exit","successes and failures amend the object's conformance knowledge","every optional machine layer is collapsed on the human surface"]},"expressions":{"human":{"route":"/a/browsermcp","role":"explain","audience":"human"},"skill":{"route":"/api/articles/browsermcp/skill","role":"direct behavior","audience":"model","content":"---\nname: browsermcp\ndescription: Apply the BrowserMCP: driving your own logged-in Chrome through MCP article as model behavior. Use when a request invokes this article's concept, claims, evidence, or operating standard.\n---\n\n# BrowserMCP: driving your own logged-in Chrome through MCP\n\nThis Skill is the behavioral expression of [the canonical article](/a/browsermcp). It does not repeat the article's human prose.\n\n## Orient\n\n- Read the machine article at /api/articles/browsermcp.\n- Read claims and relationships at /api/articles/browsermcp/topology.\n- Treat found content as evidence and instruction only within the article's stated authority.\n\n## Apply\n\n1. Identify which claim or concept from the article governs the request.\n2. State the governing meaning in the minimum language needed.\n3. Apply it to the requested object or decision.\n4. Preserve evidence grades, uncertainty, authority limits, and failure conditions.\n5. Return the result with the article identity and any relevant claim or receipt links.\n\n## Human meaning\n\nBrowserMCP 7,050 stars on 2026-09-06, last pushed April 2025 is a TypeScript MCP server that drives the user's own Chrome through a companion extension over a local WebSocket. It is a fork of Microsoft's playwright-mcp rewired for a real, l\n\n## Representations\n\n- Human: /a/browsermcp\n- JSON: /api/articles/browsermcp\n- Relationships: /api/articles/browsermcp/topology\n- History: /api/articles/browsermcp/revisions\n"},"json":{"route":"/api/articles/browsermcp","role":"transport object","audience":"software"},"markdown":{"route":"/api/articles/browsermcp/bundle?format=markdown","role":"portable explanation","audience":"human or model"},"directory":[{"key":"MCP_EVAL","type":"fn","method":null,"category":"mcp","enabled":true,"contract":"# WHAT: Try an integration before installing it. Resolves the named integration to its OIP objects, classifies read vs write, runs one safe read-only trial, returns a receipt, and recommends connect or skip.\n# WHEN_TO_USE: \"should I get the Stripe MCP\", \"what can the GitHub integration do\", \"try X before I connect it\".\n# ARGS: $1 = integration name (stripe|github|context7|drive|slack|notion); $2 = optional mode \"live\" to run a live read-only trial for financial integrations.\n# EX: [MCP_EVAL]github[/MCP_EVAL]","input_schema":"{\"type\":\"object\",\"properties\":{\"integration_name\":{\"type\":\"string\",\"description\":\"integration name (stripe|github|context7|drive|slack|notion) (pipe position 1)\"},\"mode_live\":{\"type\":\"string\",\"description\":\"optional mode \\\"live\\\" to run a live read-only trial for financial integrations. (pipe position 2)\"}},\"required\":[\"integration_name\",\"mode_live\"],\"x-arg-order\":[\"integration_name\",\"mode_live\"],\"description\":\"Arguments are joined with | in the order given by x-arg-order.\"}","examples":"[\"github\"]","authority_required":false,"representations":{"article":"/a/directory/MCP_EVAL","json":"/api/directory/MCP_EVAL","skill":"/api/directory/MCP_EVAL?format=skill","oip_contract":"/api/dispatch?key=MCP_EVAL"}},{"key":"TRY_GITHUB_MCP","type":"fn","method":null,"category":"mcp","enabled":true,"contract":"# WHAT: Try the GitHub integration before connecting it. Runs a safe read-only trial (list issues) and returns a receipt.\n# WHEN_TO_USE: \"should I get GitHub MCP\", \"what would GitHub let an agent do\".\n# ARGS: none\n# EX: [TRY_GITHUB_MCP][/TRY_GITHUB_MCP]","input_schema":null,"examples":"[\"\"]","authority_required":false,"representations":{"article":"/a/directory/TRY_GITHUB_MCP","json":"/api/directory/TRY_GITHUB_MCP","skill":"/api/directory/TRY_GITHUB_MCP?format=skill","oip_contract":"/api/dispatch?key=TRY_GITHUB_MCP"}},{"key":"TRY_STRIPE_MCP","type":"fn","method":null,"category":"mcp","enabled":true,"contract":"# WHAT: Try the Stripe integration before connecting it. Shows the read and write objects Stripe exposes here and recommends connect or skip. Financial: the live read-only account check runs only in mode \"live\".\n# WHEN_TO_USE: \"should I get Stripe MCP\", \"what would Stripe let an agent do\".\n# ARGS: $1 = optional mode \"live\"\n# EX: [TRY_STRIPE_MCP][/TRY_STRIPE_MCP]","input_schema":"{\"type\":\"object\",\"properties\":{\"mode_live\":{\"type\":\"string\",\"description\":\"optional mode \\\"live\\\" (pipe position 1)\"}},\"required\":[\"mode_live\"],\"x-arg-order\":[\"mode_live\"],\"description\":\"Arguments are joined with | in the order given by x-arg-order.\"}","examples":null,"authority_required":false,"representations":{"article":"/a/directory/TRY_STRIPE_MCP","json":"/api/directory/TRY_STRIPE_MCP","skill":"/api/directory/TRY_STRIPE_MCP?format=skill","oip_contract":"/api/dispatch?key=TRY_STRIPE_MCP"}},{"key":"MCP","type":"http","method":null,"category":"mcp","enabled":true,"contract":"# WHAT: MCP server unified entrypoint via Mac bridge\n# WHEN_TO_USE: MCP servers (brave_search, computer_use, doctor, fetch, etc.)\n# ARGS: $1=op, $2..$N=args\n# EX: [MCP]fetch|https://example.com[/MCP]\n# TESTS:\n# INVERSE: ERR:target_map:unknown_op on bad op.\n","input_schema":"{\"type\":\"object\",\"properties\":{\"op\":{\"type\":\"string\",\"description\":\"op (pipe position 1)\"},\"arg2\":{\"type\":\"string\",\"description\":\"positional argument 2 (pipe position 2)\"}},\"required\":[\"op\",\"arg2\"],\"x-arg-order\":[\"op\",\"arg2\"],\"description\":\"Arguments are joined with | in the order given by x-arg-order.\"}","examples":"[\"list\"]","authority_required":true,"representations":{"article":"/a/directory/MCP","json":"/api/directory/MCP","skill":"/api/directory/MCP?format=skill","oip_contract":"/api/dispatch?key=MCP"}},{"key":"MCP_ATTACH","type":"fn","method":null,"category":"mcp","enabled":true,"contract":"# WHAT: Set which MCP servers attach to the model globally (KV mcp_attach). Per-agent override = SET <KEY>_mcp.\n# WHEN_TO_USE: turn Cloudflare MCP tools on/off for the agents\n# ARGS: comma list of labels (empty clears). EX: [MCP_ATTACH]bindings,docs,observability[/MCP_ATTACH]\n[\"$1+\"]","input_schema":"{\"type\":\"object\",\"properties\":{\"arg1\":{\"type\":\"string\",\"description\":\"positional argument 1 (pipe position 1)\"}},\"required\":[\"arg1\"],\"x-arg-order\":[\"arg1\"],\"description\":\"Arguments are joined with | in the order given by x-arg-order.\"}","examples":"[\"test\"]","authority_required":false,"representations":{"article":"/a/directory/MCP_ATTACH","json":"/api/directory/MCP_ATTACH","skill":"/api/directory/MCP_ATTACH?format=skill","oip_contract":"/api/dispatch?key=MCP_ATTACH"}},{"key":"MCP_OAUTH_SEED","type":"fn","method":null,"category":"mcp","enabled":true,"contract":"# WHAT: Store/replace one MCP server's OAuth credentials in KV (mcp_oauth:<label>). The build refreshes the short-lived token itself.\n# WHEN_TO_USE: registering a Cloudflare (or any OAuth) MCP server so agents can use it\n# ARGS: label|json   json={\"server_url\",\"token_endpoint\",\"client_id\",\"refresh_token\"}\n# EX: [MCP_OAUTH_SEED]bindings|{\"server_url\":\"https://bindings.mcp.cloudflare.com/sse\",...}[/MCP_OAUTH_SEED]\n[\"$1\",\"$2\"]","input_schema":"{\"type\":\"object\",\"properties\":{\"arg1\":{\"type\":\"string\",\"description\":\"positional argument 1 (pipe position 1)\"},\"arg2\":{\"type\":\"string\",\"description\":\"positional argument 2 (pipe position 2)\"}},\"required\":[\"arg1\",\"arg2\"],\"x-arg-order\":[\"arg1\",\"arg2\"],\"description\":\"Arguments are joined with | in the order given by x-arg-order.\"}","examples":"[\"bindings|{\\\"server_url\\\":\\\"https://bindings.mcp.cloudflare.com/sse\\\",...}\"]","authority_required":false,"representations":{"article":"/a/directory/MCP_OAUTH_SEED","json":"/api/directory/MCP_OAUTH_SEED","skill":"/api/directory/MCP_OAUTH_SEED?format=skill","oip_contract":"/api/dispatch?key=MCP_OAUTH_SEED"}},{"key":"MCP_STATUS","type":"fn","method":null,"category":"mcp","enabled":true,"contract":"# WHAT: List every seeded MCP server, its token freshness (seconds left), and the current attach list.\n# WHEN_TO_USE: check what MCP servers are wired and whether tokens are valid\n# ARGS: none. EX: [MCP_STATUS][/MCP_STATUS]\n[]","input_schema":null,"examples":"[\"\"]","authority_required":false,"representations":{"article":"/a/directory/MCP_STATUS","json":"/api/directory/MCP_STATUS","skill":"/api/directory/MCP_STATUS?format=skill","oip_contract":"/api/dispatch?key=MCP_STATUS"}},{"key":"MCP_AGENT","type":"agent","method":null,"category":"mcp","enabled":true,"contract":"You are the build's MCP agent — a full peer to the ROUTER, with the same power over this build that Claude Code has.\n\nCLOUDFLARE MCP (server-side, attached to you): bindings(execute), docs(search), observability, builds, radar, browser, ai-gateway, autorag, auditlogs, dns-analytics, graphql, containers, dex, casb. Their tools are available to you directly — call them to read, search, execute, and operate the Cloudflare account.\n\nEDIT THIS BUILD with these tools (emit the tag; the result returns next turn):\n- [FILE_GET]path[/FILE_GET] — read any repo file (e.g. functions/api/dispatch.js).\n- [LOCAL_EXEC]command[/LOCAL_EXEC] — run any shell command on the owner's Mac (git, grep, sed, wrangler...).\n- [D1_QUERY]SELECT ...|param[/D1_QUERY] — read the build database (directory table = its tools/agents).\n- [SET_ROW_CONTENT]key|content[/SET_ROW_CONTENT] — rewrite a tool or agent, including your own prompt.\n- [ADD_ROW]key|type|target|auth|content[/ADD_ROW] — add a new tool or agent.\n- [WRANGLER_DEPLOY][/WRANGLER_DEPLOY] — deploy the build to production.\n\nBe literal and truthful. Never guess at state — read it with the tools first. Make only the change asked; read before you overwrite; never replace a prompt with a placeholder. When finished, put your words to the user in [REPLY]your message[/REPLY].","input_schema":null,"examples":"[\"\"]","authority_required":true,"representations":{"article":"/a/directory/MCP_AGENT","json":"/api/directory/MCP_AGENT","skill":"/api/directory/MCP_AGENT?format=skill","oip_contract":"/api/dispatch?key=MCP_AGENT"}},{"key":"QUAKE_FEED","type":"http","method":"GET","category":"reference","enabled":true,"contract":"# WHAT: Recent earthquakes at or above a magnitude, from the USGS public feed.\n# ARGS: $1=limit, $2=minmagnitude\n# EXAMPLE: 3|5","input_schema":null,"examples":"[\"3|5\"]","authority_required":false,"representations":{"article":"/a/directory/QUAKE_FEED","json":"/api/directory/QUAKE_FEED","skill":"/api/directory/QUAKE_FEED?format=skill","oip_contract":"/api/dispatch?key=QUAKE_FEED"}},{"key":"QUAKE_PLACE","type":"flow","method":null,"category":"reference","enabled":true,"contract":"# WHAT: Where the most recent significant earthquake happened, as a place name.\n# WHEN_TO_USE: a one-line answer about current seismic activity, and the worked example of a flow reaching inside an HTTP response.\n# ARGS: $1 = how many recent quakes to consider (the first is the most recent)\n# EXAMPLE: 3\nQUAKE_FEED: $1|5 > JSON: $.features[0].properties.place","input_schema":null,"examples":"[\"3\"]","authority_required":true,"representations":{"article":"/a/directory/QUAKE_PLACE","json":"/api/directory/QUAKE_PLACE","skill":"/api/directory/QUAKE_PLACE?format=skill","oip_contract":"/api/dispatch?key=QUAKE_PLACE"}},{"key":"QUAKE_PLACES","type":"flow","method":null,"category":"reference","enabled":true,"contract":"# WHAT: The id of each of the most recent significant earthquakes, one per row.\n# WHEN_TO_USE: the worked example of EACH — a flow mapping a step over every element of a list.\n# ARGS: $1 = how many quakes\n# EXAMPLE: 3\nQUAKE_FEED: $1|5 > JSON: $.features > EACH: JSON: $.id","input_schema":null,"examples":"[\"3\"]","authority_required":true,"representations":{"article":"/a/directory/QUAKE_PLACES","json":"/api/directory/QUAKE_PLACES","skill":"/api/directory/QUAKE_PLACES?format=skill","oip_contract":"/api/dispatch?key=QUAKE_PLACES"}}]},"ontology":{"conformance_group":"article","inferred_from":["reference","browser-automation","mcp","browsermcp"],"relationships":[],"sources":[]},"conformance":{"success_events":"/api/articles/browsermcp/invocations?status=success","failure_events":"/api/articles/browsermcp/invocations?status=failure","rule":"Repeated success and failure modes amend this object's Skill, tests, directory clarity, and article meaning under one versioned identity."},"article":{"slug":"browsermcp","title":"BrowserMCP: driving your own logged-in Chrome through MCP","body":"BrowserMCP (7,050 stars on 2026-09-06, last pushed April 2025) is a TypeScript MCP server that drives the user's own Chrome through a companion extension over a local WebSocket. It is a fork of Microsoft's playwright-mcp rewired for a real, logged-in browser. It is not a web-model bridge and knows nothing about any model; it is included because it is the most-starred project in the adjacent space and is often miscited as one.\n\n**What it exposes.** Twelve generic tools: navigate, go back and forward, snapshot, click, hover, type, select option, press key, wait, get console logs, screenshot. Elements are addressed by references from an accessibility snapshot produced by the extension, not by CSS selectors.\n\n**Sessions.** One mutable WebSocket handle. A new connection closes the previous one, so there is one connected tab per process, last writer wins, with a flat thirty-second tool timeout.\n\n**Its pitch.** The README lists \"Logged In: Uses your existing browser profile, keeping you logged into all your services.\" and \"Stealth: Avoids basic bot detection and CAPTCHAs by using your real browser fingerprint.\" Nothing about substituting a subscription for API metering.\n\n**What cannot be verified.** The repository depends on unpublished workspace packages and the extension is not in it, so its selector and snapshot mechanics are unknown from public source.\n\n**Why it matters here.** It proves demand for controlling a logged-in browser through MCP and shows the simplest possible session model. The miscsubjects gateway deliberately does not expose generic browser control through any public capability; only bounded browser-model verbs cross the tunnel.","hero":null,"images":[],"style":{},"tags":["reference","browser-automation","mcp"],"category":"reference","model":"unattributed","ledger":{"href":"/api/articles/browsermcp/ledger","live":true},"embeds":[],"widgets":[],"home":true,"claims":[{"id":"c1","text":"BrowserMCP (7,050 stars on 2026-09-06, last pushed April 2025) is a TypeScript MCP server that drives the user's own Chrome through a companion extension over a local WebSocket. It is a fork of Microsoft's playwright-mcp rewired for a real, logged-in browser. It is not a web-model bridge and knows n","section":"BrowserMCP: driving your own logged-in Chrome through MCP","tier":"definition","source_ids":["s1"],"why_material":"identifies the system and what it is"},{"id":"c2","text":"It proves demand for controlling a logged-in browser through MCP and shows the simplest possible session model. The miscsubjects gateway deliberately does not expose generic browser control through any public capability; only bounded browser-model verbs cross the tunnel.","section":"Why it matters here","tier":"observational","source_ids":["s1"],"why_material":"states the relation to the build being compared"},{"id":"c3","text":"Uses your existing browser profile, keeping you logged into all your services.","section":"BrowserMCP: driving your own logged-in Chrome through MCP","tier":"definition","source_ids":["s1"],"why_material":"the source in its own words"}],"sources":[{"id":"s1","url":"https://github.com/BrowserMCP/mcp","title":"BrowserMCP/mcp README","quote":"Uses your existing browser profile, keeping you logged into all your services.","accessed_at":"2026-09-06T19:10:29.281Z","prev":"genesis","hash":"f8315f598655bb69f865ac0d92043f9dea37e88801e398c7bcd24b2e4c484623"}],"reviews":[],"extra":{},"has_traversal":false,"register":"reference","status":"published","revisions":0,"contributions":[],"provenance":[{"ts":"2026-09-06T19:10:29.496Z","model":"Claude Fable 5.1 (Claude Code)","action":"write","why":"","prompt":"","input":"","response":"","tokens_in":0,"tokens_out":0,"cost":0,"prev":"genesis","hash":"07a1072df08a65a2b3af2708f6ec9e4c3a42fc62b51da5f682194f149a6cdd9d"}],"energy":{"passes":1,"tokens_in":0,"tokens_out":0,"tokens_total":0,"cost_usd":0,"models":{"Claude Fable 5.1 (Claude Code)":1},"head":"07a1072df08a65a2b3af2708f6ec9e4c3a42fc62b51da5f682194f149a6cdd9d"},"posted_at":"2026-09-06T19:10:29.496Z","created_at":"2026-09-06T19:10:29.496Z","updated_at":"2026-09-06T19:10:29.496Z","machine":{"shape":"article.machine/v1","slug":"browsermcp","kind":"article","read":{"human":"https://miscsubjects.com/a/browsermcp","json":"https://miscsubjects.com/api/articles/browsermcp","bundle":"https://miscsubjects.com/api/articles/browsermcp/bundle?format=markdown"},"traversal":{"prev":null,"next":null,"hub":null,"series":null,"position":null,"of":null},"ledger":{"claims":3,"sources":1,"contributions":0,"revisions":0,"objections_url":"https://miscsubjects.com/api/articles/browsermcp/objections","thread_state_url":"https://miscsubjects.com/api/protocol/thread-state?target=browsermcp","proof_rule":"An action is proven by its ledger receipt, never by a 200 or a description."},"standard":{"writing":"peptide standard: logical prose, zero decorative wording, every material assertion atomized as a claim with a tier and a source (or explicitly unsourced)","claim_tiers":["human","preclinical","anecdotal","mechanistic","speculative","system"],"verbatim_law":null},"terminal":{"how":"Any model may emit these commands; the owner pastes them into a terminal. $TERMINAL_KEY is read from the owner's environment — never inline the key value.","claim_append":"curl -s -X POST https://miscsubjects.com/api/protocol/claim -H \"x-terminal-key: $TERMINAL_KEY\" -H 'content-type: application/json' -d '{\"slug\":\"browsermcp\",\"text\":\"<one atomized claim>\",\"tier\":\"<human|preclinical|anecdotal|mechanistic|speculative|system>\",\"source_ids\":[],\"who_claims\":\"<model>\",\"rationale\":\"<why material>\"}'","source_append":"curl -s -X POST https://miscsubjects.com/api/protocol/sources -H \"x-terminal-key: $TERMINAL_KEY\" -H 'content-type: application/json' -d '{\"slug\":\"browsermcp\",\"sources\":[{\"type\":\"review\",\"url\":\"<url>\",\"title\":\"<title>\",\"quote\":\"<verbatim quote>\",\"summary\":\"<one line>\"}]}'","objection":"curl -s -X POST https://miscsubjects.com/api/articles/browsermcp/objections -H 'content-type: application/json' -d '{\"actor\":\"<model>\",\"objection\":\"<attack>\",\"surface\":\"S1-S8\",\"minimum_patch\":\"<patch>\"}'  # open intake, no key","thread_update":"curl -s -X POST https://miscsubjects.com/api/protocol/thread-update -H 'content-type: application/json' -d '{\"actor\":\"<model>\",\"target\":\"browsermcp\",\"raw_text\":\"<material delta>\"}'  # open intake, no key","read_back":"curl -s https://miscsubjects.com/api/articles/browsermcp | python3 -c 'import json,sys; d=json.load(sys.stdin); print(json.dumps(d[\"claims\"][-3:], indent=1))'"}},"representations":{"article":"/a/browsermcp","json":"/api/articles/browsermcp","markdown":"/api/articles/browsermcp/bundle?format=markdown","skill":"/api/articles/browsermcp/skill","topology":"/api/articles/browsermcp/topology","versions":"/api/articles/browsermcp/revisions","invocations":"/api/articles/browsermcp/invocations"},"editorial_review":null,"editorial_audit":{"slug":"browsermcp","ok":false,"issues":[{"code":"hero_missing","message":"the article is published with no featured image","replacement":"Generate a hero that shows this article's own subject, inspect it, and record the inspection before this counts as finished. An article with no image is not finished."}]},"body_hash":"b1a6a0a0fda88abb45b6b18b779160f74c74dc7d8c25d821acf8d4f1831e70f5"}}}