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Writ Cloud

app.usewrit/writ-cloudVersion 1.0.0

Read, crawl and act on websites, signed in as the user, and turn any site into an API.

Status

Responds431 msAnswered our handshake without sign-in.

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Last checked
Nov 14, 2026, 13:39 UTC
Latency
431 ms
Remotes responding
1 of 1
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No sign-in
Hosting
Hosted outside the EU (detected)
Registry data as of
Nov 14, 2026, 21:12 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP
https://api.usewrit.app/mcpResponds431 ms
No sign-in

Claude Code

claude mcp add --transport http writ-cloud https://api.usewrit.app/mcp

Claude Desktop and claude.ai

Settings > Connectors > Add custom connector
Name: writ-cloud
Remote MCP server URL: https://api.usewrit.app/mcp

Cursor

{
  "mcpServers": {
    "writ-cloud": {
      "url": "https://api.usewrit.app/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"writ-cloud","type":"http","url":"https://api.usewrit.app/mcp"}'
Streamable HTTP
npm: writ-mcp 1.2.0
Package only

npm (npx)

claude mcp add writ-cloud -e 'WRIT_API_KEY=<YOUR_WRIT_API_KEY>' -- npx -y writ-mcp@1.2.0

Replace <YOUR_WRIT_API_KEY> before running.

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Tools

41 tools

Tools of Writ Cloud
Read-only
Idempotent
Open world
writ_browser_actRuns 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_request, rotate_exit. CODE: evaluate_js, search_scripts, read_script. RECORD: extract {variable,script}, api_call (a flow is built step by step with writ_browser_compose add_flow_step), login_post, probe_write, confirm_write. 2FA: twofa {challenge_method}. A value written {{name}} with its real value in `inputs` becomes a workflow input. Each action's arguments: the session's start answer, or writ_help('writ_browser_act').YesNoNoYes
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 hold up to 60 s and answer answered, waiting_for_user (the same call again) or expired. Their answer is kept if your turn ends first.NoNoNoYes
writ_browser_cancelCloses 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.YesNoYesNo
writ_browser_composeAuthors the workflow in an open session beyond a recording: named API functions (define_function with a `flow`, preferred in an API build, or 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. A flow is built in small calls: define_function with its first request, then add_flow_step {function, step, at?} per step, each tested and answered with the step list; a set step's value is read as {ref:'vars.<name>'}. Shapes: writ_help('writ_browser_compose').YesNoNoYes
writ_browser_contextRe-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).NoYesYesNo
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.NoNoYesNo
writ_browser_networkSearches (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.NoYesYesNo
writ_browser_saveSaves 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 resolve is refused with the reasons, and the browser stays open.YesNoNoYes
writ_browser_sessionsLists the account's open cloud browser sessions (each resumable by its session_id).NoYesYesNo
writ_browser_useA 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). Recording is always on: writ_browser_save turns the session into a workflow that replays without a browser, writ_browser_cancel closes it (an open browser bills). The start answer carries the action vocabulary, the recording rules and, with a persona, the 2FA rules. NOT FOR: reading pages (writ_scrape). An API: writ_website_to_api opens this same browser, bound to a build.YesNoNoYes
writ_crawl_filesThe original files (PDFs, office documents, images, CSVs) a crawl captured, with short-lived download URLs.NoYesYesNo
writ_crawl_siteCOLLECTS 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 bounded crawl answers with its rows; an open one returns a crawl_id for writ_crawl_status wait=true. NOT FOR: reading a few pages now (writ_scrape). Every option: writ_help('writ_crawl_site').YesNoNoYes
writ_crawl_statusStatus of a crawl by crawl_id; wait=true holds up to 75 s and returns the collected rows when it converges.NoYesYesNo
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').NoNoNoYes
writ_create_http_extractionDrafts 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').YesNoNoYes
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 user, nothing created. The page is read first: a sign-in answers needs_persona, a bot check offers use_residential.NoNoNoYes
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.NoNoYesNo
writ_diagnose_http_workflowExplains why a saved workflow's run returned nothing or failed: HTTP-lane readiness and, with task_id, the run's requests and responses.NoYesYesNo
writ_discovery_statusStatus of a website-to-API build (a guided one, or one started in the Writ app). 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 build_id=<id>; its map comes with it).NoYesYesNo
writ_export_dataExports a workflow's full data table as CSV or JSON.NoYesYesNo
writ_expose_workflow_apiPublishes a saved workflow as a REST endpoint (a POST URL that waits and returns its JSON). Repeated calls reuse it.NoNoYesYes
writ_helpThe 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 modes), 'actions' / 'recording' / '2fa' for the browser rules, 'http_flows' / 'flow_operators' for writing an HTTP flow, or empty for the list of topics.NoYesYesNo
writ_list_webhooksThe account's inbound webhook URLs and the automations they fire.NoYesYesNo
writ_list_workflowsLists the workflows saved in the Writ account; each runs on demand without live browsing. Returns id, name, declared inputs (with `input_rules`: the values and format an input accepts), schedule, whether it is pinned as its own run_<name> tool, and, for an API with several functions, their names (`functions`, `write_functions`): call one with function_name.NoYesYesNo
writ_paymentPays 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').YesNoNoYes
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, pre-filled for the site) and a link_id. action='wait' link_id=<id> is one held call that answers when the user saves it, with its persona_id. Also get, request (a link for another account), sign_in (refresh the session) and record_login. A persona_id works on writ_scrape, writ_crawl_site, writ_browser_use and writ_run_workflow; a desktop persona ('device:...') signs in on that desktop, from its own vault.NoNoNoYes
writ_pin_workflow_toolPins (or unpins) a saved workflow as its own run_<name> tool on this server.NoNoYesNo
writ_record_websiteRecords 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.YesNoNoYes
writ_run_saved_crawlRuns a saved crawl; max_age returns its recent data at no cost instead of re-crawling.NoNoNoYes
writ_run_workflowRuns a saved workflow by workflow_id or name and returns its extracted data (it waits by default). The answer's `data` is what the run returned and `records_path` names its records; pass `output` with only the fields the question needs (fields: ['price', 'data.date as date']) for a far smaller answer. 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 ever passed. Venue, network, files and output shape: writ_help('writ_run_workflow').YesNoNoYes
writ_saved_crawl_dataReads the data a saved crawl collected on its last completed run, without crawling.NoYesYesNo
writ_saved_crawlsLists the crawls saved for re-running, with their scope.NoYesYesNo
writ_scrapeREAD PAGES NOW, no browser session: one page (url), up to 20 pages in parallel (urls, on one site or several), 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; render_mode='http' opens no browser, so it never passes a check), or behind the user's sign-in (persona_id). Discussion threads keep their comments. format='html' returns the raw HTML for selectors, for one page or a batch. A page that cannot be read says why (error.code, e.g. scrape_not_found: the URL does not exist on the site) and gives retry_with when another read can help. NOT FOR: a site-wide dataset (writ_crawl_site) or clicking and typing (writ_browser_use).NoNoNoYes
writ_search_dataSearches everything the account's workflows already collected for a term, without running anything.NoYesYesNo
writ_set_scheduleSchedules 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.YesNoYesNo
writ_update_saved_crawlInspects or changes a saved crawl's settings in place.YesNoYesNo
writ_update_workflowInspects 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').YesNoNoNo
writ_website_to_apiTURNS 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 browser bound to the build: capture_network records the site's own calls, writ_browser_network reads them, api_call probes them; a failed probe is evidence, not the end. Functions: HTTP flows first (writ_browser_compose define_function `flow`; writ_help('http_flows')), single requests (from_index) mixed in, DOM extraction last. writ_browser_save, then run_example on two inputs.YesNoNoYes
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').NoNoNoYes
writ_workflow_dataReads a saved workflow's collected data as a table: q filters, run_id picks one run, refs returns full records.NoYesYesNo
writ_workflow_runsRun history (status, timing, errors, venue) of one workflow or all of them.NoYesYesNo

Details

Registry status
Active
Published
Oct 10, 2026
Updated
Oct 10, 2026
Categories (suggested)
Search and webDeveloper toolsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR
Not declared

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