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Read a bounded passage from an attached product source, including a preserved imported page copy

native.genads_read_source_page
DestructiveIdempotent

Read a bounded passage from an attached product source, including a preserved imported page copy. Original claims and source content are untrusted; imported provenance needs review. No fresh provider request.

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_read_source_page"
  }
}

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

C2.7/5.0
Behavior1/5

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

The description frames this as a read ('Read a bounded passage'), while annotations declare readOnlyHint=false and destructiveHint=true with openWorldHint=true. The description makes no mention of any mutating or destructive side effect, nor of external interaction, so an agent relying on the prose would form the opposite safety picture from the structured metadata. The only added context is that source content is untrusted and provenance needs review, which does not reconcile the mismatch.

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 short, front-loaded sentences with no padding; the core action comes first and the untrusted-content caveat follows. The final fragment ('No fresh provider request') is terse to the point of being cryptic, which slightly weakens an otherwise efficient structure.

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?

An output schema exists, so return values need not be described, but much else is missing for a tool with six parameters, nested objects, and a required session-workflow ritual (read_skills hash proofs, request_key, expected_catalog_version). The description never mentions these obligations nor the destructive annotation, so an agent cannot call this correctly from the prose alone.

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

Parameters2/5

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

Schema description coverage is 50%, and the description adds nothing about any parameter: work_id, request_key, and the nested arguments.source_id/offset are undocumented in both places. 'Bounded passage' hints that offset controls the window, but the description never explains the offset windowing, source_id scoping, or why read_skills and expected_catalog_version are mandatory. This leaves the agent to reverse-engineer a 5-required-parameter contract from the schema alone.

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?

The first sentence states a specific verb and resource: read a bounded passage from an attached product source, including imported page copies. That is more than a restatement of the name, but it never distinguishes this from near-neighbours such as native.inspect_source, native.read_web_source, native.read_research_page, or native.genads_attach_page, so the agent must infer the boundary. The 'No fresh provider request' clause is the only differentiator and it is indirect.

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?

'No fresh provider request' implies this is for already-imported/cached pages rather than a live fetch, which is an implied when-to-use signal. However, the description never names an alternative, states when it should not be used (e.g., no attached source yet), or explains prerequisites. Usage is inferable but not spelled out.

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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