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captapi

by io.github.CDCStream
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pinterest_search

Keyword pin search — offset cursor, SERP window 40. Costs ~13 credits (0.5/result). Empty results and failures are never charged. Pass cache=true for a free 24h cache hit (default always fresh).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
qYesKeywords or search query (min 2 characters).
cacheNoSet true to serve from the 24h response cache (0 credits on hit). Default false — always fetch fresh.
limitNoMax items to return (default 25, max 200). Billed per result.
cursorNoPagination cursor. Leave empty for the first page; then pass the nextCursor value returned in the previous response (numeric offset, e.g. 25). A null nextCursor means the end of the SERP window (max 40).

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedInput schema / properties / cache / description
      Previous value: -"Set true to serve from the 24h response cache (0 credits on hit). Default false — always fetch fresh. Envelope includes cached + cachedAt on hits."New value: +"Set true to serve from the 24h response cache (0 credits on hit). Default false — always fetch fresh."
  2. Changed4 schema fields changed
    • changedInput schema / properties / cache / description
      Previous value: -"Set true to serve from the 24h response cache. Default false — always fetch fresh data."New value: +"Set true to serve from the 24h response cache (0 credits on hit). Default false — always fetch fresh. Envelope includes cached + cachedAt on hits."
    • changedInput schema / properties / cursor / description
      Previous value: -"Pagination cursor. Leave empty for the first page; then pass the nextCursor value returned in the previous response (numeric offset, e.g. 25). A null nextCursor means the end of the retrievable window."New value: +"Pagination cursor. Leave empty for the first page; then pass the nextCursor value returned in the previous response (numeric offset, e.g. 25). A null nextCursor means the end of the SERP window (max 40)."
    • changedInput schema / properties / limit / description
      Previous value: -"Max items to return. Default 25, max 200. Billed per result."New value: +"Max items to return (default 25, max 200). Billed per result."
    • changedInput schema / properties / q / description
      Previous value: -"Search query or keywords (min 2 chars)."New value: +"Keywords or search query (min 2 characters)."
  3. Changed1 schema field changed
    • addedInput schema / properties / cursor
      Added value: +{
+  "description": "Pagination cursor. Leave empty for the first page; then pass the nextCursor value returned in the previous response (numeric offset, e.g. 25). A null nextCursor means the end of the retrievable window.",
+  "type": "string"
+}
  4. Changed1 schema field changed
    • changedInput schema / properties / cache / description
      Previous value: -"Responses are cached for 24 hours by default. Set false to bypass the cache and always fetch fresh data (default true)."New value: +"Set true to serve from the 24h response cache. Default false — always fetch fresh data."
  5. Changed1 schema field changed
    • addedInput schema / properties / cache
      Added value: +{
+  "description": "Responses are cached for 24 hours by default. Set false to bypass the cache and always fetch fresh data (default true).",
+  "type": "boolean"
+}
  6. Added

TDQS

A4.6/5.0
Behavior5/5

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

With no annotations, the description carries the full disclosure burden and does well: it states credit cost (~13 credits), per-result billing, no charge for empty/failed results, the SERP window cap of 40, and cache=true 24h free-cache behavior with fresh-by-default. This is rich behavioral context beyond what the schema provides.

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?

Three short sentences front-load the core purpose and then pack pricing, caching, pagination, and failure behavior with no filler. Every sentence earns its place.

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?

The description covers purpose, pagination, limits, pricing, and caching, so an agent can invoke the tool correctly. It does not describe return result fields, and there is no output schema, but for a search endpoint this is a minor gap rather than a blocking omission.

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

Parameters4/5

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

The schema already documents all four parameters (100% coverage), so the baseline is 3. The description adds the SERP window cap of 40, which qualifies how limit and cursor interact, and clarifies cursor/offset and per-result billing, adding meaningful value beyond the schema.

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 opens with 'Keyword pin search', naming the specific operation (search) and resource (pins). This clearly differentiates it from sibling tools like pinterest_user_pins, pinterest_board, and pinterest_pin_details.

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 clearly frames the tool as keyword-driven pin search, so an agent can infer it is for discovery by query rather than for fetching a user's pins or board details. It does not explicitly name sibling alternatives or state when not to use it, but the context is unambiguous enough.

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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