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Call a tool

call_tool
Destructive

Run any AskEditor tool by name, including the many that are not in your tool list: the captions, motion graphics, animations, keyframes, transitions, audio, tracking, brand and board tools. Load the tools/ guide that owns it first (load_skill), then pass its arguments in args. Guards, approvals and results are exactly those of calling the tool directly.

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": {
      "name": "<name>",
      "project_id": "<project_id>"
    },
    "name": "call_tool"
  }
}

Input Schema

NameRequiredDescriptionDefault
argsNoThe tool's own arguments (its input schema), without project_id. Add approval_id here when a previous call answered needs_approval.
nameYesThe tool, e.g. set_clip_animation.
project_idYesThe AskEditor project (from list_projects).

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A3.9/5.0
Behavior4/5

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

Adds genuine context beyond annotations: it discloses that the wrapper inherits the target tool's guards and approval flow (including the needs_approval/approval_id round-trip referenced in the schema), so destructiveHint=true is explained rather than merely asserted. It does not describe failure behavior for unknown tool names or how errors surface, which would complete the picture for a fully open-ended dispatcher.

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?

Three sentences, front-loaded with the capability and its scope before the prerequisite. The enumeration of tool categories is long but earns its place by conveying breadth; slightly tighter phrasing would improve it.

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?

For a generic dispatcher with three parameters, no output schema, and openWorldHint=true, the description covers scope, prerequisite, argument passing, and safety/approval parity. What remains unstated is error handling for a wrong or missing tool name and whether results are returned verbatim, but the essentials are present.

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%: name, project_id and the nested args object (including the approval_id hint) are all documented in the schema itself. The description's "pass its arguments in args" restates the schema rather than adding format or validation guidance, so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a concrete verb+resource ("Run any AskEditor tool by name") and clarifies the key scope: tools not present in the agent's own tool list, with a representative enumeration (captions, keyframes, transitions, audio, tracking, brand/board). It is not differentiated from the sibling run_tools, which appears to serve a similar meta-invocation role, so an agent still has an ambiguity to resolve.

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?

Gives an explicit prerequisite sequence: load the tools/ guide that owns the target tool via load_skill, then pass arguments in args. It also reassures that guards, approvals and results match a direct call. It does not state when to prefer this over run_tools or over native sibling tools, which is the one real usage gap.

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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