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meta_ads_campaigns_pause

Pause a Meta Ads campaign to immediately stop ad spend. Setting status to PAUSED cascades to active ad sets and ads, halting delivery while remaining reversible.

Instructions

Pauses a single campaign by setting its status to PAUSED. Cascades to active ad sets and ads — nothing underneath the campaign will serve while it is PAUSED. Lightweight and reversible via rollback_apply or meta_ads_campaigns_enable. Returns the campaign id and new status. Use for immediate stop-spend situations; use meta_ads_campaigns_update with status='DELETED' to soft-delete instead.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
reasonNoWhy this change is being made: one or two sentences naming the evidence and the expected effect. Stored in the journal and on the action_log entry this call produces, for the operator and the next session.
account_idNoMeta Ads account ID in the format 'act_XXXXXXXXXX' (e.g. 'act_1234567890'). Optional — falls back to META_ADS_ACCOUNT_ID from the configured credentials. The leading 'act_' prefix is required.
campaign_idYesCampaign ID to pause.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv0.20.0
    • addedInput schema / properties / reason
      Added value: +{
      +  "description": "Why this change is being made: one or two sentences naming the evidence and the expected effect. Stored in the journal and on the action_log entry this call produces, for the operator and the next session.",
      +  "maxLength": 500,
      +  "type": "string"
      +}
  2. Changed1 schema field changedv0.10.37
    • addedInput schema / additionalProperties
      Added value: +false
  3. Addedv0.9.12
  4. Removedv0.9.6
  5. Addedv0.9.2
  6. Removedv0.9.1
  7. Addedv1.0.5

TDQS

A4.7/5.0
Behavior5/5

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

With no annotations, the description carries the full burden and does so well: it discloses the status change, cascading effect on ad sets and ads, the fact that nothing underneath will serve, reversibility, and the returned values. This gives an agent a solid mental model of the operation's side effects.

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, then adds cascade behavior, reversal, return values, and usage guidance. Every sentence earns its place, and there is no redundant or filler content.

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 mutating tool with no annotations and no output schema, the description is remarkably complete: it explains side effects, reversal, return shape, and when to choose an alternative. An agent has enough context to select and invoke it correctly.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already documents all three parameters. The description adds no further parameter-level meaning beyond clarifying the single-campaign scope, which aligns with campaign_id. This matches the baseline for high schema coverage.

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 states a specific action ('Pauses a single campaign'), the mechanism ('setting its status to PAUSED'), and the resource affected. It also distinguishes itself from related sibling tools by noting the cascade behavior and contrasting with the DELETED soft-delete path.

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 explicitly says when to use the tool ('immediate stop-spend situations'), names the soft-delete alternative (meta_ads_campaigns_update with status='DELETED'), and identifies reversal options (rollback_apply, meta_ads_campaigns_enable). This is clear routing guidance that leaves little 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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