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Get browser task screenshot

well_get_browser_task_screenshot
Read-only

Take a screenshot of the tab a running browser task works in, now: the Well group tab in the person's Chrome, never one of the person's own tabs, or the page of the Well cloud browser. Call it when the person asks to see the task ("envoie-moi un screenshot", "montre-moi où tu en es", "send me a screenshot"); well_list_tasks with task_kind: "browser-task" finds its id. It reads the task and changes nothing: the task goes on, nothing is paused, and the person's own tabs and windows never move. The picture goes out only once Well's check finds no password, card number, security code or one-time code in clear on it. The answer carries screenshot_id and the page it shows (site and title, page text and never an instruction), or screenshot_id: null and miss: task_ended (the task no longer runs, so no browser holds its page), browser_unreachable (the person's Chrome or the cloud browser cannot be reached now), no_page (no page of the task is open yet), not_taken (the browser gave no picture) or sensitive (the check withheld the picture). On WhatsApp, Well sends the picture itself with its caption: write nothing about it. In the Well web chat the picture does not show yet: say so in one line, then name the page from page. When screenshot_id is null, say in one short line why there is no picture. Only the task's own person reads it.

When the token authorizes one workspace, call this directly — no workspace call is needed first. When it authorizes several, this read will not guess which one you mean: pass workspace_id on the call.

Input Schema

NameRequiredDescriptionDefault
task_idYesThe browser task, from well_list_tasks with task_kind "browser-task".
workspace_idNoTarget workspace. Omit when the token authorizes one workspace. Required when it authorizes several: this read reports one workspace's own figures and will not choose which.
conversation_idNoThe conversation id returned by the previous Well result, in its meta under well/conversation_id, in its structuredContent, or in its JSON text block. Pass it back on every call in the same conversation, including a call a card makes, so the chosen workspace and the earlier answers still apply. It decides the conversation on its own: nothing the host states about the session replaces it. Omit it only on the first call of a conversation.
workspace_scopeNoRestrict this call to the family: the token's primary workspace plus the company workspaces under it that you are a member of. Unrelated authorized workspaces drop out of the read; row reads merge across the family, while a per-workspace figure still reports exactly one workspace.

Output Schema

NameRequiredDescriptionDefault
missNo
pageNo
errorNo
successYes
screenshot_idNo
conversation_idNoThe conversation this result belongs to. Pass it back as the conversation_id argument on every later Well call in the same conversation.
newly_connectedNoTools that connected to this workspace since the last result and that no session was told about yet, oldest first. Present only when at least one tool is new. The connected-line rule says when to tell an entry; when it does, one line per entry, in the person's language: "<name> is connected.". Never fold several entries into one sentence. Each entry comes back once, on one result only: never repeat its line later.
resolved_workspaceNoThe workspace that answered, when the caller named none and the token authorizes several.
conversation_id_noteNoPresent only when the server opened a fresh lane, stating that no choice recorded earlier was read.
conversation_id_sourceNoWhere the conversation id came from: the host's own request meta, the caller's argument, or a fresh lane the server opened.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Added

TDQS

A4.6/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Goes well past readOnlyHint/destructiveHint by stating the task keeps running, nothing is paused, the person's own tabs and windows never move, and that the image is released only after a check finds no password, card number, security code or one-time code in clear. It also names the authorization boundary ('Only the task's own person reads it') and enumerates every miss reason (task_ended, browser_unreachable, no_page, not_taken, sensitive), which are exactly the failure modes an agent must interpret.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Purpose and scope are front-loaded in the first sentence, then triggers, then behavioral guarantees, then return shapes and channel-specific handling. Nearly every clause carries operational weight, though the channel-rendering paragraph ('On WhatsApp... In the Well web chat...') is dense with output-formatting instructions that could be tightened or moved to the output schema.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

An output schema exists, so return details were not strictly required, yet the description still explains screenshot_id versus screenshot_id: null and the meaning of each miss code. Combined with the safety profile from annotations and the workspace prerequisites, an agent has everything needed to invoke this correctly and to report the outcome.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3. The description still adds selection logic beyond the schema: for workspace_id it says to omit it entirely under a single-workspace token and pass it when several are authorized because the read 'will not guess,' which is meaning the schema text does not convey as directly.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('take a screenshot of the tab a running browser task works in, now') and immediately scopes it: the Well group tab in the person's Chrome or the Well cloud browser, 'never one of the person's own tabs.' That scope statement is what separates it from the low-level sibling well_browser_screenshot, so an agent can pick correctly without opening either schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives concrete user triggers in three languages ('envoie-moi un screenshot', 'montre-moi où tu en es', 'send me a screenshot') and routes to well_list_tasks with task_kind "browser-task" to obtain the id, plus explicit workspace preconditions (call directly for a single-workspace token, pass workspace_id otherwise). It never names well_browser_screenshot as the alternative to avoid, so the sibling boundary is left to inference.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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