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Harurow

@harurow/j-quants-doc-mcp

by Harurow

migrate_v1_to_v2

Guides J-Quants API users through migration from V1 to V2 by mapping endpoint correspondences, highlighting changes, and linking to V2 documentation.

Instructions

V1 APIからV2 APIへの移行ガイドを提供する。V1 APIを利用中のユーザーがV2 APIへ移行する際に、エンドポイントの対応関係や変更点を案内し、V2の仕様書ページへ誘導します。

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
v1_endpointNoV1 APIのエンドポイントパスまたはキーワード(例: /v1/prices/daily_quotes, 株価四本値等)。指定しない場合は移行ガイド全体を返す。
Behavior3/5

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

With no annotations provided, the description carries the full burden. It discloses that the tool provides a guide and directs users to the V2 spec page, implying an informational, non-mutating operation. However, it does not describe output format, error handling, or any side effects.

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 consists of two concise sentences that front-load the purpose and follow with supporting detail. No redundant or unnecessary information.

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

Completeness3/5

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

The tool has one optional parameter and no output schema. The description clarifies purpose and usage but does not describe the return value structure or any edge cases, which is a gap given the absence of an output schema. Still, it provides sufficient context for a simple guide tool.

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 input schema fully describes the single optional parameter v1_endpoint with examples and behavior when omitted (100% coverage). The description adds no additional parameter information, so the schema does the heavy lifting, warranting the baseline score.

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 tool's function: providing a migration guide from V1 to V2 API, including endpoint correspondence and changes. It uses a specific verb ('提供する') and resource, distinguishing it from sibling tools like describe_endpoint or fetch_spec_page.

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 specifies when to use this tool: when users of V1 API are migrating to V2 API. It does not mention alternatives or exclusions, but the context is clear.

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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