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Ask User a Question

ask_user
Destructive

Ask the user a question as a push notification on their phone and block until they answer. Reach for this whenever you need the user's decision and they may be away from the current client: approving a risky or irreversible step (deleting files, force pushing, spending money, sending external messages), picking between implementation options, or supplying missing input. The user answers from the lock screen or a decision page; you do not need a separate wait_for_answer call because this tool waits by default. Three question types: "confirm" (yes/no), "select" (2 to 6 fixed choices), "input" (free text). A single call blocks for at most 55 seconds. If a live question times out, nextAction is "wait_for_answer": poll once with timeoutMs 55000. If that poll is also unanswered, cancel the phone question before asking in the current chat or client. If cancellation returns handoffAction "stop", stop. Otherwise, if cancellation returns false, poll once for 1 second and honor the answer that won the race. Cancelled, expired, and missing questions are reported as terminal states rather than as timeouts. Every response carries answerUrl, the signed-in dashboard page where this question is waiting. When you report that you are waiting, print that URL to the user so they can answer from a browser instead of hunting for it. Works from Claude Code, Codex, Cursor, Hermes, or any MCP client; no Claude subscription is required. SIDE EFFECT: sends a real push notification.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
tagsNoDeliver only to subscribers that have any of these tags.
typeNoQuestion type: confirm renders yes/no buttons, select renders the options list, input renders a free-text field.confirm
waitNotrue (default) blocks until the user answers or the timeout fires. Set false to return immediately with a pending correlationId and poll it yourself via wait_for_answer.
actionNoThe concrete operation about to happen, one line. Shown as the Action line.
intentNoThe user's stated task (from their last prompt), one line. Shown as the Intent line so the user can see why the agent stopped.
blockerNoThe single gating reason the agent stopped, one line. Shown as the Blocker line.
contextNoOne or two sentences about what the agent is working on, shown above the question so the user can decide without opening the terminal.
optionsNoThe 2 to 6 choices for a select question. Required when type is "select", ignored otherwise. The answered value is the chosen option string.
repoKeyNoStable repository identity for the working directory, e.g. "github.com/acme/api". Lets an approval routing rule scoped to one repository avoid governing another. Optional; omit it and only workspace-wide routing rules apply.
questionYesThe question shown on the user's lock screen (max 500 chars). Phrase it so it is answerable at a glance; put background in context instead.
toolNameNoThe tool this approval is for (e.g. "Bash"), so the user can choose to always-allow it.
agentNameNoName of the agent asking, format "{Agent} - {project}" (e.g. "Claude Code - myproject"). Shown in the notification title so the user knows which session needs them. Falls back to the MCP client name if omitted.
machineIdNoStable machine id of the asking agent, so two machines never collapse into one session.
questionsNoONE question, in the richer Claude-compatible shape: a header, per-option descriptions, multiSelect, and an optional write-in. Exactly one keeps already-installed clients answerable; asking several means several calls. Runtime-populated; ordinary callers should omit it and use question/type/options.
requestIdNoMACHINE-POPULATED. The CALLER's own identifier for one logical invocation, used only when the runtime supplies no toolUseId. Mint it once, outside your retry loop, and send the same value on every attempt, so three retries of one ask become one decision. Do NOT derive it from the question text or reuse it across two deliberate asks: both collapse a real second question into the first one's answer. If you are a model deciding to call this tool, omit this field.
scopePathNoSet ONLY when this approval exists because the path falls outside the scope the user ratified via propose_scope. Approving then widens the run scope to include this exact path, so the user is not asked again for the same area.
sessionIdNoOpaque per-session id of the asking agent, so parallel sessions are attributed separately.
timeoutMsNoHow long this call blocks, in milliseconds (max 55000). Defaults to the site policy timeout. The question stays open for 10 minutes regardless, so a timeout here is not a refusal; follow up with wait_for_answer.
toolUseIdNoMACHINE-POPULATED. The agent RUNTIME's own identifier for the tool call this approval gates, forwarded verbatim by a hook that received it. Do NOT invent, guess, derive, or reuse a value: two different questions sent under the same id collapse into one, and the second one never reaches a human. If you are a model deciding to call this tool, omit this field.
actionBodyNoThe diff (Edit/Write) or full command (Bash/apply_patch), secret-redacted and size-capped. Rendered as a collapsible detail block; never used as the push body.
toolTargetNoCompact target of the tool call (e.g. the command head "git push" for Bash, or a file extension like ".ts" for Edit/Write). Used to mine policy suggestions.
waitEndsAtNoMACHINE-POPULATED. When the agent hook stops waiting live and hands control back to the terminal. The question may remain answerable after this time. Ordinary callers should omit it.
callbackUrlNoWebhook URL that receives a POST with the answer when the user responds, signed with the X-Pushary-Signature header. Useful when the agent process may exit before the answer arrives.
externalIdsNoDeliver only to subscribers matching these external IDs.
placeholderNoHint text shown inside the free-text field for input questions
subscriberIdsNoDeliver only to these subscriber IDs. Omit all targeting fields to reach every connected device.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
hintNoWhat to do next, when there is a next step.
modeNoThe site delivery mode that stopped this call from waiting.
noteNoFree text the user added alongside their answer.
typeYesThe question type that was rendered.
valueNoThe user's answer: "yes" or "no" for confirm, the chosen option for select, the typed text for input.
statusNoThe question state. Only pending is a live unanswered wait; cancelled, expired, missing, and unavailable must not be described as timeouts.
warningNoPresent only when no channel is connected, naming what the user has to connect.
answeredNoTrue once the user responded. Absent on the wait:false path, where nothing was awaited.
deliveryNoPer-channel reach for the push carrying this question.
questionYesThe question exactly as the user saw it.
timedOutNoTrue when the initial wait ended while the question was still live. Poll once with wait_for_answer, then follow handoffAction when present, otherwise nextAction.
answerUrlNoThe signed-in dashboard page where this question is waiting. Print it when you tell the user you are waiting, so they can answer from a browser.
noDevicesNoTrue when no phone, browser, or Slack channel could receive the question. Do not wait; follow handoffAction immediately.
nextActionNoBackward-compatible next step: poll once or ask in the current client. Follow handoffAction first when present.
suppressedNoTrue when the PHONE push was deliberately held because a terminal on this machine is active. It says nothing about the notch, the dashboard or Slack, which are unaffected and may still be showing this question. A caller with no screen of its own should treat it as the terminal's to answer; a caller that can render the question itself should keep waiting.
waitEndsAtNoWhen the agent hook stops waiting live. On an idempotent replay this is the original question's deadline, which the hook must reuse.
correlationIdYesId of the question that was created. Pass it to wait_for_answer to keep waiting, or to cancel_question to retract it.
handoffActionNoRace-safe directive for updated clients. Takes precedence over nextAction: cancel before asking in the current client, or stop the handoff.
expiresInSecondsNoHow long the question stays answerable.

TDQS

A4.9/5.0
Behavior5/5

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

Annotations only declare readOnly=false and destructive=true, which is a thin safety profile. The description carries the burden and does so thoroughly: it discloses that it sends real push notifications, blocks at most 55 seconds, may time out into wait_for_answer/cancel_question, and reports terminal states for cancelled/expired/missing questions. No contradiction with annotations exists.

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?

The description is dense with operational guidance and delivers the core behavior in the first sentence. Some repeated instructions about polling and cancellation could be tightened, but each sentence adds actionable value for a complex approval tool.

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?

For a complex, blocking, destructive tool with 26 parameters and 4 siblings, the description covers invocation, timeout recovery, cancellation, response shape (answerUrl, nextAction), targeting, and client compatibility. Output schema exists so return values don't need to be repeated. The description is complete enough to use safely.

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

Parameters5/5

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

Schema coverage is 100% so the baseline is 3, but the description adds significant context: it explicitly says avoid requestId/toolUseId for ordinary callers, explains the wait_for_answer conversation flow, shows example values for repoKey and agentName, and clarifies the questions field is runtime-populated. This goes well beyond the schema alone.

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?

The description clearly states the tool blocks on a phone push question until answered, explains three question types, and includes a side-effect warning. It distinguishes itself from wait_for_answer, cancel_question, and send_notification by explicitly explaining when to use it and the wait/poll/cancel flow.

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

Usage Guidelines5/5

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

The description is explicit about when to use the tool (risky/irreversible steps, picking options, supplying missing input), when not to (polling separately), and how to handle timeouts (wait_for_answer then cancel_question then re-ask). It also states that no Claude subscription is required and that it works from various MCP clients, which gives clear usage context.

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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TDQS

A4.7/5.0
Disambiguation5/5

Each tool has a clearly distinct role: ask_user blocks for a decision, send_notification is one-way, wait_for_answer polls an existing question, cancel_question retracts a pending one, and propose_scope is a specialized ratification flow. The only potential overlap is ask_user versus propose_scope, but the scope-specific contract and 'call ONCE at the start' guidance make the boundary clear.

Naming Consistency5/5

All five tools follow the same imperative verb_noun snake_case pattern: ask_user, cancel_question, propose_scope, send_notification, wait_for_answer. Even though the verbs differ, the structure is uniform and predictable.

Tool Count5/5

Five tools is well-scoped for a push-notification and human-in-the-loop interaction server. There is no redundancy or padding; every tool maps to a distinct stage in the question/notification lifecycle.

Completeness5/5

The server covers the full interaction lifecycle: create a question (ask_user), wait for its answer (wait_for_answer), cancel it if obsolete (cancel_question), send one-way alerts (send_notification), and ratify scope before multi-step work (propose_scope). No obvious dead ends or missing critical operations exist for the stated purpose.

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