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Valuein — SEC EDGAR Fundamentals & Smart-Money Data

Cancel Scheduled Task

cancel_scheduled_task
DestructiveIdempotent

Cancel a pending scheduled task by id (from schedule_task or list_scheduled_tasks). Only a pending task can be cancelled — one that already woke (completed) cannot be un-woken. Idempotent: cancelling an already-cancelled task is a no-op. Tier: sp500+ (sample rejected).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
task_idYesIdentifier of the scheduled task to cancel.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
_metaYesProvenance envelope — data lineage for every MCP response
task_idYes
cancelledYesTrue if THIS call moved the task to cancelled; false if it was already completed/cancelled or not found.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedOutput schema / properties / _meta / properties / fundamentals_as_of / description
      Previous value: -"ISO timestamp when the FINANCIAL STATEMENTS were last rebuilt. Use THIS — not `last_updated` — when telling a user how current the fundamentals are. The snapshot is republished on every weekday price refresh while the statements are carried forward unchanged, so `last_updated` can be far more recent than the numbers it sits next to."New value: +"ISO timestamp when the FINANCIAL STATEMENTS were last rebuilt in bulk. Use THIS — not `last_updated` — when telling a user how current the cross-sectional fundamentals are. The snapshot is republished on every weekday price refresh while the statements are carried forward unchanged, so `last_updated` can be far more recent than the numbers it sits next to. It is a floor for a single filer, not a ceiling: a filer with a live partition receives its filing, facts and ratios intraday (minutes after EDGAR dissemination), so an entity-scoped read may carry a filing newer than this; cross-sectional ranks (factor scores, earnings signals) refresh with the weekly bulk export."
  2. Changed2 schema fields changed
    • addedOutput schema / properties / _meta / properties / fundamentals_as_of
      Added value: +{
      +  "description": "ISO timestamp when the FINANCIAL STATEMENTS were last rebuilt. Use THIS — not `last_updated` — when telling a user how current the fundamentals are. The snapshot is republished on every weekday price refresh while the statements are carried forward unchanged, so `last_updated` can be far more recent than the numbers it sits next to.",
      +  "type": "string"
      +}
    • addedOutput schema / properties / _meta / properties / price_as_of
      Added value: +{
      +  "description": "ISO timestamp when the price surfaces were last refreshed.",
      +  "type": "string"
      +}
  3. Changed2 schema fields changed
    • addedOutput schema / properties / _meta / properties / cost_usd
      Added value: +{
      +  "additionalProperties": false,
      +  "description": "Per-call cost transparency. Omitted for subscription-only tools that have no PAYG-equivalent price.",
      +  "properties": {
      +    "amount_usd": {
      +      "minimum": 0,
      +      "type": "number"
      +    },
      +    "basis": {
      +      "description": "payg_charge = real agent-pay charge. payg_rate_card = indicative price, not billed.",
      +      "enum": [
      +        "payg_charge",
      +        "payg_rate_card"
      +      ],
      +      "type": "string"
      +    },
      +    "billed": {
      +      "description": "true = this amount was actually charged via PAYG for this call. false = indicative PAYG-equivalent value; your plan already covers this call for free.",
      +      "type": "boolean"
      +    }
      +  },
      +  "required": [
      +    "amount_usd",
      +    "billed",
      +    "basis"
      +  ],
      +  "type": "object"
      +}
    • addedOutput schema / properties / _meta / properties / latency_ms
      Added value: +{
      +  "description": "Wall-clock milliseconds this tool call took, measured server-side around the handler.",
      +  "minimum": 0,
      +  "type": "integer"
      +}
  4. Added

TDQS

A4.7/5.0
Behavior5/5

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

Annotations already mark destructiveHint and idempotentHint, but the description adds specific behavioral detail: only pending tasks are affected, completed tasks are irreversible, and already-cancelled tasks are no-ops. It also discloses the access tier restriction. This meaningfully supplements the structured annotations without contradiction.

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

Conciseness5/5

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

The description is compact and front-loaded, with the core action first. Every sentence earns its place: source of the id, state constraint, idempotence, and tier restriction. No redundant or vague filler.

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 single-parameter tool with an output schema and annotations covering destructiveness/idempotence, the description covers all essential operational context: what it cancels, when it applies, how it behaves on already-cancelled/completed tasks, and access limits. No critical information for correct invocation is missing.

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?

The input schema already covers task_id at 100%, so the baseline is 3. The description adds value by specifying where the id comes from ('from schedule_task or list_scheduled_tasks') and that the task must be pending, giving the parameter practical context beyond the schema's generic 'Identifier' description.

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 action: 'Cancel a pending scheduled task by id', naming the specific resource and the distinguishing constraint (pending). It also references sibling tools schedule_task and list_scheduled_tasks for id provenance, which differentiates it from related scheduling tools.

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?

The description provides explicit when-to-use guidance: only pending tasks can be cancelled, and completed tasks cannot be un-woken. It also notes that cancelling an already-cancelled task is a no-op, so the agent knows when the call is unnecessary. It does not name alternative tools for other scenarios, but the conditions are clear enough.

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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