Writ Cloud
Read, crawl and act on websites, signed in as the user, and turn any site into an API.
Connect it
Settings → Connectors → Add custom connector
URL: https://api.usewrit.app/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://api.usewrit.app/mcp{
"mcpServers": {
"writ-cloud": {
"url": "https://api.usewrit.app/mcp"
}
}
}claude mcp add --transport http writ-cloud https://api.usewrit.app/mcp{
"servers": {
"writ-cloud": {
"type": "http",
"url": "https://api.usewrit.app/mcp"
}
}
}{
"mcpServers": {
"writ-cloud": {
"command": "npx",
"args": [
"-y",
"writ-mcp@1.2.0"
],
"env": {
"WRIT_API_KEY": "<value>"
}
}
}
}claude mcp add writ-cloud -- npx -y writ-mcp@1.2.041 tools, verified live
writ_browser_usecan modifyA REAL CLOUD BROWSER FOR A TASK ON A SITE: the user's signed-in account (a persona_id from writ_personas: the password stays sealed in Writ, and sessions never ask for a password), a click, form, submit or search inside an app, or a page a plain fetch cannot open (login wall, 403, CAPTCHA). Opens the browser and returns the first page; writ_browser_act drives it (Writ runs no model here). Recordin
writ_record_websitecan modifyRecords a repeatable task on a site as a workflow (goal + start url): the same session as writ_browser_use, labelled with its goal, driven with writ_browser_act and saved with writ_browser_save. A goal that asks for an API opens as a writ_website_to_api build instead: the same browser, bound to the build.
writ_website_to_apican modifyTURNS A WEBSITE INTO A CALLABLE API (named functions with inputs, returning JSON), built by the caller in a real browser. url = the page that already shows the rows (search results or a listing, not the home page); goal = the inputs and fields wanted. The call first proposes the user's matching saved workflows and marketplace APIs (skip_existing / skip_marketplace build fresh), then opens a cloud
writ_discovery_statusread-onlyStatus of a writ_website_to_api build. wait=true is one held call (up to 75 s) that follows the build to its newest rung and returns when it is done or parked. Answers: succeeded (workflow_id, functions, run_example), failed, cancelled, or needs_guidance (the build is the caller's to finish with writ_website_to_api mode=guided build_id=<id>; its map comes with it).
writ_browser_actcan modifyRuns one batch of actions on an open session and returns the fresh page. Each action is an object, e.g. {"action":"click","selector":"#go"}. DRIVE: navigate, click, fill, type_text, select, check, hover, submit, press_key, scroll, back, wait, wait_for. SEE: query_dom, find_text, read_text, count, get_attributes, inspect, list_candidates, get_dom, get_screenshot. NETWORK: capture_network, get_reque
writ_browser_contextread-onlyRe-reads an open session: section=page (url, fields, buttons, cleaned DOM), lists (the page's repeating rows with a live-tested define_function payload for writ_browser_compose), map (the evidence of the build the session is bound to).
writ_browser_networkread-onlySearches (operation=search, query, method) or reads in full (operation=detail, index) the backend requests the page made after capture_network: the site's real API. writ_browser_act api_call probes one with other values (a `flow`: several requests); an index feeds writ_browser_compose define_function from_index.
writ_browser_composecan modifyAuthors the workflow in an open session beyond a recording: named API functions (define_function with a `flow` (preferred in an API build), from a captured call's index, or a lists payload; live-tested as defined; compile_function for an authenticated request), set_inputs, add_steps, test_function, remove_function, remove_step, list. Payload shapes: writ_help('writ_browser_compose').
writ_browser_savecan modifySaves the open session as a replayable workflow and closes the browser, in the place its browser ran: the user's desktop library or Writ Cloud. Composed functions become callable API functions, declared inputs become its parameters. The answer carries the steps, the inputs and a run_example; the workflow runs at zero AI cost through writ_run_workflow. A save that references something no run could
writ_browser_ask_userHands an open session to the Writ user: kind='captcha' (they complete a security check in the live browser), 'twofa' (they supply the one-time code and Writ types it; the code never reaches this conversation), 'sign_in' (they sign in on the live page; no persona applies) or 'question' (their text answer). The call that opens the ask returns at once with user_link + tell_user to relay; later calls
writ_browser_cancelcan modifyCloses an open browser session (an open cloud browser bills until it is closed). Unsaved work that did more than visit pages is auto-saved first and the reply names it; discard=true keeps nothing.
writ_browser_sessionsread-onlyLists the account's open cloud browser sessions (each resumable by its session_id).
writ_personasThe user's own accounts on websites (personas): how Writ signs in as them. No password passes through this tool or the conversation, and its answers never ask for one: credentials are typed only into a Writ window. action='list' domain=<site> shows the personas usable there; with none it answers persona_needed: a tell_user for the user, a create_url (a small Writ window with only the sign-in form,
writ_paymentcan modifyPays on a site with one of the user's cards; card numbers never reach this conversation. request (site, max_amount, purpose) returns a tell_user and an open_url where the user approves; wait (grant_id or confirmation_id); checkout pauses at the order button for the user's confirmation, then Writ places the order; fill; list (card handles only). Details: writ_help('writ_payment').
writ_devicesThe user's linked Writ desktops: list, use (scope this connection to one: runs, browsers, personas and monitors then target it), clear, monitors, datasets.
writ_list_workflowsread-onlyLists the workflows saved in the Writ account; each runs on demand without live browsing. Returns id, name, declared inputs, schedule, and whether it is pinned as its own run_<name> tool.
writ_run_workflowcan modifyRuns a saved workflow by workflow_id or name and returns its extracted data (it waits by default). Inputs go as top-level fields or under `inputs`; function_name runs one function of a multi-function API (with the sign-in it needs). max_age reuses a recent result at no cost. A write function previews with mutation_mode='dry_run'. Runs sign in as the workflow's persona or persona_id; no password is
writ_update_workflowcan modifyInspects or edits a saved workflow: an outline, one function's source, targeted function or step edits, a settings patch. copy_to keeps a linked copy on Writ Cloud or the user's desktop. Every option: writ_help('writ_update_workflow').
writ_create_http_extractioncan modifyDrafts or revises a multi-request browserless HTTP extraction (loops, GraphQL, cursor pagination) from captured requests and a plain-language goal. Every option: writ_help('writ_create_http_extraction').
writ_diagnose_http_workflowread-onlyExplains why a saved workflow's run returned nothing or failed: HTTP-lane readiness and, with task_id, the run's requests and responses.
writ_pin_workflow_toolPins (or unpins) a saved workflow as its own run_<name> tool on this server.
writ_workflow_dataread-onlyReads a saved workflow's collected data as a table: q filters, run_id picks one run, refs returns full records.
writ_search_dataread-onlySearches everything the account's workflows already collected for a term, without running anything.
writ_export_dataread-onlyExports a workflow's full data table as CSV or JSON.
writ_workflow_runsread-onlyRun history (status, timing, errors, venue) of one workflow or all of them.
writ_set_schedulecan modifySchedules a saved workflow: every_minutes, or kind='daily'/'weekly' with time (HH:MM) and days. functions + inputs schedule chosen functions of a multi-function API.
writ_expose_workflow_apiPublishes a saved workflow as a REST endpoint (a POST URL that waits and returns its JSON). Repeated calls reuse it.
writ_crawl_sitecan modifyCOLLECTS a site or a section into a queryable, change-tracked dataset (one row per page). Scope: intent (a section, in plain words), rank_cap=N (the top N items of a listing), seed_urls (known pages), or the whole site capped by page_budget. Modes: markdown (default, no AI), extract_mode='schema' (uniform records), executor='ai' + extract_prompt (per-page understanding, 5x the page rate). A bounde
writ_saved_crawlsread-onlyLists the crawls saved for re-running, with their scope.
writ_update_saved_crawlcan modifyInspects or changes a saved crawl's settings in place.
writ_run_saved_crawlRuns a saved crawl; max_age returns its recent data at no cost instead of re-crawling.
writ_saved_crawl_dataread-onlyReads the data a saved crawl collected on its last completed run, without crawling.
writ_scrapeREAD PAGES NOW, no browser session: one page (url), up to 20 pages in parallel (urls), or a listing plus its top N item pages (url + top_n). Returns clean markdown in 2-10 s, including pages a plain fetch cannot read: rendered by JavaScript (render_mode='browser'; a read that only got the page's shell says so and gives the retry), behind a bot wall or 403 (an automatic residential retry), or behin
writ_crawl_statusread-onlyStatus of a crawl by crawl_id; wait=true holds up to 75 s and returns the collected rows when it converges.
writ_crawl_filesread-onlyThe original files (PDFs, office documents, images, CSVs) a crawl captured, with short-lived download URLs.
writ_create_automationCreates an automation: on an event (a workflow or crawl completed, a monitor change, a webhook, a schedule) it runs a workflow, sends a notification templated over the event's data, and/or wakes an AI agent. Event, template and webhook options: writ_help('writ_create_automation').
writ_list_webhooksread-onlyThe account's inbound webhook URLs and the automations they fire.
writ_create_monitorWATCHES a page for changes: Writ checks it on a schedule and fires change_detected when the page, a CSS selector's text, a value read by `extract`, or a visual zone changes. Returns the monitor_id that writ_wire_monitor connects to an alert, a workflow or an AI task (a price watch takes a threshold there). Without `interval` the answer is needs_input: this plan's options and a tell_user for the us
writ_wire_monitorConnects a monitor's change_detected event to an action: action='notify' (channels and recipients the account has configured), 'workflow' (runs a saved workflow), or 'ai_task' (an AI agent opens the page and works `prompt`). A price watch takes `threshold` (+ threshold_op): the action then runs once, when a check reads a price at or below it. Buying at a price (`buy`): writ_help('writ_wire_monitor
writ_helpread-onlyThe full reference of any Writ tool (every parameter and its rules) and the complete guide. topic = a tool name (e.g. 'writ_browser_compose', a 'run_<workflow>' tool), 'guide' for the manual (recurring digests, HTTP flow building, buying on a price, crawl and build modes), 'actions' / 'recording' / '2fa' for the browser rules, 'http_flows' / 'flow_operators' for writing an HTTP flow, or empty for
writ_browser_live_viewThe live browser card's own access: the card ChatGPT and Claude show under writ_browser_use and writ_record_website calls it to read the session's state and get one-time passes for the session's screencast and its take-over channel. The user watches the page in the card and can take it over there. It is not part of a conversation's work.
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