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List a page of accessible Brand or Genfluencer sources

native.genads_identity_choices
DestructiveIdempotent

List a page of accessible Brand or Genfluencer sources. Follow nextCursor to find more, then save the chosen source in the brief.

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": {
      "work_id": "<work_id>",
      "arguments": "<arguments>",
      "expected_catalog_version": "<expected_catalog_version>",
      "read_skills": "<read_skills>",
      "request_key": "<request_key>"
    },
    "name": "native.genads_identity_choices"
  }
}

Input Schema

NameRequiredDescriptionDefault
work_idYes
argumentsYes
read_skillsYesExact required native skills and their dependencies, copied from the accepted session bootstrap's skills array. Include only entries in that array. General mcp.* guides and native.{studio}.instructions are guidance, not native skill proofs.
request_keyYes
publication_proposal_idNoFor native Social scheduling, the exact server-approved publication proposal. This identifier cannot confer approval by itself.
expected_catalog_versionYesFor a new session, read a studios/{studio}/native/{pack} child toolset and copy invocation.catalog_version from a native tool descriptor. Do not use the top-level library version. For calls in an existing session, use that session proposal's catalog_version.

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

B3.3/5.0
Behavior3/5

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

Annotations already declare openWorldHint, idempotentHint and destructiveHint, so safety is nominally covered. The description adds pagination behavior but calls the token 'nextCursor' while the schema parameter is 'cursor', and it never acknowledges the write-flavored annotation profile implied by 'save the chosen source in the brief'. No mention of required native skill proofs or session prerequisites.

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?

Two front-loaded sentences with no filler: purpose first, then the follow-up action. Only the naming mismatch of nextCursor versus cursor detracts.

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

Completeness2/5

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

This is a six-parameter, nested-schema tool with five required arguments, including session machinery (read_skills, request_key, expected_catalog_version), yet the description addresses none of it. The output schema covers return values, but the description is thin for a tool whose invocation requires skill proofs and a catalog version.

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 coverage is about 50%, with the schema itself documenting read_skills, expected_catalog_version and publication_proposal_id. The description usefully maps 'Brand or Genfluencer' to the kind enum and explains cursor paging, but leaves work_id and request_key unexplained and uses a parameter name ('nextCursor') that does not match the schema ('cursor').

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 specific verb and resource: 'List a page of accessible Brand or Genfluencer sources.' That is clear about what is returned (a page of selectable identity sources), but it does not distinguish this from nearby siblings such as native.genads_identity_sources or native.identity_brand_source.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives workflow context ('Follow nextCursor to find more, then save the chosen source in the brief'), which implies this is a discovery step before a save. It never says when to choose this over the other identity/source listing siblings, and names no exclusions.

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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