agentcard

resume_card

Idempotent

Resume a paused multi-use card so it accepts charges again. The inverse of pause_card.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "card_id": "<card_id>"
    },
    "name": "resume_card"
  }
}

Input Schema

Name	Required	Description	Default
`card_id`	Yes	The paused card ID to resume.
`approval_id`	No	Approval id from a prior approval_required response, once the user has approved. Only for cards created through ANOTHER app: first call without it (the user is emailed an approve link), then retry with it.

Output Schema

Name	Required	Description
`cardId`	No	The card ID.
`status`	No	"active" on success; an error discriminator otherwise (e.g. "card_not_paused").
`message`	Yes	Human-readable result.

Schema Changelog

Changes observed during successful MCP inspections.

First observedJul 28, 2026

TDQS

A4/5.0

Behavior3/5

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

Annotations already indicate non-read-only, non-destructive, and idempotent behavior. The description adds that the card will 'accept charges again,' but does not cover the two-step approval flow hinted by the 'approval_id' parameter, leaving a behavioral gap.

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 extremely concise, with two sentences that front-load the main action and efficiently link to the sibling tool. Every sentence serves a purpose.

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

Completeness4/5

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

Given the tool's moderate complexity (2 parameters, one with conditional usage), the description plus schema covers the essential behavior. However, omitting a summary of the two-step approval pattern (for cards from another app) is a minor completeness gap.

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?

The schema covers both parameters with descriptive comments (100% coverage). The description adds no additional meaning beyond what the schema already provides, so it meets the baseline but does not exceed it.

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 ('Resume a paused multi-use card'), the resource ('paused multi-use card'), and distinguishes from the sibling 'pause_card' by calling itself the inverse.

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 clear context by referring to 'pause_card' as the inverse, implying it is used after pausing. However, it does not explicitly state when not to use it or mention alternatives like 'close_card'.

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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