linkfox-ai Zhihuiya Patent PDF Downloader
This skill guides you on how to retrieve patent PDF full-text download links from the Zhihuiya patent database, supporting lookup by patent ID or publication number.
Core Concepts
The Zhihuiya Patent PDF service provides direct download links to the full-text PDF documents of patents worldwide. You can query by patent ID or publication number (also called public announcement number), and retrieve up to 100 patents in a single request.
Lookup priority: When both patentId and patentNumber are supplied, the service uses patentId first. This is important to remember when both identifiers are available.
Family substitution: If a patent's own PDF is unavailable, the service can optionally return the PDF of a related family patent instead.
Parameter Guide
| Parameter | Type | Required | Description |
|---|---|---|---|
| patentId | string | Conditionally | Patent ID(s). At least one of patentId or patentNumber must be provided. Separate multiple values with commas. Max 100 entries. |
| patentNumber | string | Conditionally | Publication/announcement number(s). At least one of patentId or patentNumber must be provided. Separate multiple values with commas. Max 100 entries. |
| replaceByRelated | string | No | Whether to substitute with a family patent PDF when the original is unavailable. 1 = yes, 0 = no. Defaults to no substitution. |
How to Choose the Right Identifier
- Patent ID (
patentId): An internal numeric identifier within the Zhihuiya system. Use this when the user provides Zhihuiya-specific IDs. - Publication Number (
patentNumber): The public-facing patent number (e.g.,US20230012345A1,CN115000000A). Use this when the user provides standard patent numbers.
Response Fields
| Field | Description |
|---|---|
| total | Number of records returned |
| data | Array of patent objects, each containing download information |
| data[].patentId | The patent ID |
| data[].pn | The publication/announcement number |
| data[].pdfPath | The PDF full-text download URL |
| data[].pnRelated | Publication number of the substitute family patent (only present when family substitution is used) |
| costToken | Tokens consumed by the request |
调用方式
- API 端点：
POST /zhihuiya/pdfData（完整参数/响应/错误码见references/api.md） - Python 脚本：
python scripts/zhihuiya_pdf_data.py '<JSON 参数>' [--inline] - 成本约束：本工具会消耗积分；同一会话同一参数组合默认只调用一次，脚本带 24h 本地缓存。失败/空结果不得自动换关键词、翻页或改邮编连续试探；需要继续检索时先向用户说明会产生额外消耗。
输出策略（脚本默认行为）：
- 始终将完整响应写入
<cwd>/linkfox/<YYYY-MM-DD>/<session>/data/linkfox-zhihuiya-pdf-data-<timestamp>.json（<cwd>为脚本执行时的工作目录，在 Claude Code 里即当前项目目录；<session>取自环境变量SESSION_ID，按用户任务自动聚合；禁止写入 /tmp，当前目录不可写则报错） - 响应体 ≤ 8 KB：落盘后把完整 JSON 打印到 stdout
- 响应体 > 8 KB：落盘后 stdout 只输出摘要（顶层字段、常见计数如
total/costToken、最大列表字段的长度 + 前 3 条样本） - 加
--inline强制全量打印到 stdout（同样落盘）
读数据建议：先看摘要判断是否足够；需要具体字段时优先用 jq或ConvertFrom-Json 从保存的 json 文件按需抽取，避免整份 JSON 进入上下文。
解决认证和积分问题
发生以下异常情况时，采用 references/onboarding.md 引导解决问题：
异常情况
- 未配置API Key：环境变量未配置
LINKFOX_AGENT_API_KEY，也未配置LINKFOXAGENT_API_KEY。 - 响应401或402状态码
- 响应提示积分或余额不足：消息含"积分余额不足/计费不足/余额不足/quota exceeded/insufficient balance/套餐到期/需充值/请充值"，或类似含义的内容。
Usage Examples
1. Single Patent by Publication Number
Retrieve the PDF for patent publication number US20230012345A1.
Parameters: {"patentNumber": "US20230012345A1"}
2. Multiple Patents by Publication Number
Download PDFs for CN115000000A, CN115000001A, and CN115000002A.
Parameters: {"patentNumber": "CN115000000A,CN115000001A,CN115000002A"}
3. Single Patent by Patent ID
Get the full-text PDF for patent ID 12345678.
Parameters: {"patentId": "12345678"}
4. With Family Substitution Enabled
Download the PDF for EP4000000A1. If it is unavailable, use a family patent PDF instead.
Parameters: {"patentNumber": "EP4000000A1", "replaceByRelated": "1"}
5. Batch Download by Patent IDs
Retrieve PDFs for patent IDs 11111111, 22222222, 33333333.
Parameters: {"patentId": "11111111,22222222,33333333"}
Display Rules
- Present download links clearly: For each patent, show the publication number and its PDF download link in a clean table or list format.
- Highlight substitutions: If a PDF was provided via family patent substitution, explicitly note this and show the
pnRelatedvalue so the user knows which family patent was used. - Batch results: When multiple patents are returned, present them in a table with columns: Publication Number, Patent ID, PDF Link, and Substitution Note (if applicable).
- Error handling: When a query fails or returns no results, explain the reason and suggest the user verify the patent ID or publication number. If
replaceByRelatedwas not enabled, suggest enabling it as an alternative. - No PDF available: If a patent entry is returned without a
pdfPath, inform the user that the PDF is not available and suggest enabling family substitution.
Important Limitations
- Batch limit: A maximum of 100 patents per request.
- Identifier requirement: At least one of
patentIdorpatentNumbermust be provided; the request will fail if both are empty. - Priority rule: When both identifiers are provided,
patentIdtakes precedence overpatentNumber. - PDF availability: Not all patents have PDFs available. Use the
replaceByRelatedoption to fall back to family patents.
User Expression & Scenario Quick Reference
Applicable -- Patent PDF document retrieval tasks:
| User Says | Scenario |
|---|---|
| "Download the PDF for patent XX" | Single patent PDF retrieval |
| "Get full-text documents for these patents" | Batch patent PDF download |
| "I need the PDF for publication number XX" | Lookup by publication number |
| "Can I get the patent document even if it's not directly available" | Family substitution scenario |
| "Batch export patent PDFs" | Multi-patent batch download |
Not applicable -- Needs beyond patent PDF retrieval:
- Patent search or discovery (finding patents by keyword, assignee, etc.)
- Patent citation or legal status analysis
- Patent claim interpretation or translation
- Patent portfolio analytics or landscape mapping
积分消耗规则
按动态规则计费：消耗积分 = 81 × 返回data条数。每条为 1 条专利 PDF 结果
重要：本技能的服务按倍数动态计算，可能一次性消耗大量积分，必须提醒用户，由用户决定是否继续。
Feedback:
Auto-detect and report feedback via the Feedback API when any of the following apply:
- The functionality or purpose described in this skill does not match actual behavior
- The skill's results do not match the user's intent
- The user expresses dissatisfaction or praise about this skill
- Anything you believe could be improved
Call the feedback API as specified in references/api.md. Do not interrupt the user's flow.
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