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Cancel a schedule

well_cancel_schedule
Destructive

Cancel one workspace schedule for good, except the morning brief, which this turns off: a one-off that has not run yet ("cancel my 1:45am poem"), a recurring job or an event job. A cancelled schedule runs nothing again and cannot be resumed; to run the job again, create a new schedule. A run already in progress is not stopped. When the person asks to turn off the morning brief, this disables it and preserves its time. It can be turned back on with well_update_schedule and status "active".

REQUIRED: schedule_id (from well_list_schedules or the result of well_create_schedule).

Cancelling draws no confirmation card. Confirm the schedule's name with the user in your own words before you call it, and quote the status the result returns.

Use it when the person asks to disable, stop or turn off a routine, such as "turn off my brief" or "disable my morning brief". Disabling the morning brief keeps its current status and time; the run sends no brief until the person turns it back on.

Do NOT use this to skip a few days of a routine (use well_snooze_schedule), to pause a schedule you may want back (use well_update_schedule with status "paused"), or to change one (use well_update_schedule).

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
schedule_idYesThe schedule to cancel.
workspace_idNoTarget workspace. Omit when the token authorizes one workspace. Required when it authorizes several — a write lands in exactly one workspace and this call would not say 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.
idempotency_keyNoOptional client-supplied key. A retried write with the same key returns the original result instead of re-applying the operation.
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
errorNo
statusNo
messageNo
successYes
scheduleNo
next_run_atNo
approved_toolsNo
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. Changed4 schema fields changed
    • removedOutput schema / properties / next_run_at / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / next_run_at / type
      Added value: +[
      +  "string",
      +  "null"
      +]
    • removedOutput schema / properties / resolved_workspace / properties / name / anyOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]
    • addedOutput schema / properties / resolved_workspace / properties / name / type
      Added value: +[
      +  "string",
      +  "null"
      +]
  2. Changed1 schema field changed
    • changedOutput schema / properties / newly_connected / description
      Previous value: -"Tools 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. Start the reply with 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."New value: +"Tools 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."
  3. Added

TDQS

A4.8/5.0
Behavior5/5

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

Goes well beyond the destructiveHint/idempotentHint annotations: cancellation is permanent and non-resumable, an in-progress run is not stopped, the morning brief is disabled-but-preserved and re-enableable, and no confirmation card is drawn so the agent must confirm verbally. That is precisely the destructive-behaviour context an agent needs.

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?

Front-loads the irreversible nature and the morning-brief exception, which is the right ordering. However, the brief-disabling behaviour is stated twice (once early, once in the usage-guidelines paragraph), and the multi-workspace guidance is padded with a wordy 'this read will not guess' sentence, so a trim would help.

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?

With an output schema present, the description needn't explain return values, and it still tells the agent to quote the returned status. For a destructive single-target write with five params, every decision the agent must make is covered: which tool, how to confirm, and which workspace to target.

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 the baseline is 3; the description adds real value by giving schedule_id provenance (well_list_schedules or the create result) and by telling the agent to pass workspace_id only when the token authorizes several workspaces. It does not explain idempotency_key behaviour beyond what the schema already says.

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 ('Cancel one workspace schedule for good') and immediately scopes the special case (morning brief). It distinguishes itself from siblings like well_snooze_schedule and well_update_schedule by name, so an agent can select it without opening any schema.

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?

Gives explicit when-to-use examples ('turn off my brief', 'disable my morning brief') and explicit when-not-to-use with the exact alternative for each case (snooze for a few days, update_schedule with status 'paused' for a reversible pause, update_schedule to change). Nothing 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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