How do I install the Aminer PDF Ocr skill?

Run npx skillmds@latest add canxiangcc/aminer-pdf-ocr in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Aminer PDF Ocr safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Aminer PDF Ocr?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Aminer PDF Ocr free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Aminer PDF Ocr?

canxiangcc (@canxiangcc) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Aminer PDF Ocr by canxiangcc — Agent Skill

Name: Aminer PDF Ocr
Author: canxiangcc

Aminer PDF Ocr

[Activation] Use when the user provides a PDF and requests OCR, Markdown conversion, or structured experiment extraction. [Scope] Submit the PDF to the AMiner PDF OCR open platform (`/api/v3/paper/pdfocr/*`), poll the asynchronous job, download and unpack its ZIP, then let the Agent extract experiments from result.md using references/experiment_prompt.md. [Routing] Use pdf-citation-verifier for citation verification and aminer-academic-search / aminer-free-academic for literature search.

canxiangcc 0fbc298 11 files · 48.0 KB Updated Sep 17, 2026

File contents

PDF OCR + Experiment Extraction

The Python wrapper validates a PDF, uploads it to the AMiner PDF OCR open platform, handles queue backoff, polls the asynchronous job, downloads the temporary result ZIP, and writes compatible local artifacts. The Agent then reads result.md and follows references/experiment_prompt.md to create experiments.json.

Pre-flight

Confirm AMINER_API_KEY exists (same token as other AMiner skills). If missing, stop and send the user to https://open.aminer.cn/open/board?tab=control. Never print its value. OPEN_PLATFORM_TOKEN is accepted only as a deprecated fallback.
Install requests and pypdf from requirements.txt.
Confirm the input is a local PDF or an HTTP(S) URL. The open platform accepts only unencrypted PDFs of 1-30 pages and at most 10 MiB. Refuse localhost / private-network URLs.

Run

python3 "${CLAUDE_PLUGIN_ROOT}/scripts/ocr.py" --input "/abs/path/to/paper.pdf"

Options include --output-dir, --request-timeout, --poll-timeout, --max-upload-attempts, --no-save-images, and --output. The old local parser, backend, page-range, formula, and table options are not supported.

API contract

Endpoints: POST /api/v3/paper/pdfocr/upload and GET /api/v3/paper/pdfocr/result on https://datacenter.aminer.cn/gateway/open_platform.
Upload and polling use the same token (AMINER_API_KEY) and send Authorization, X-Platform (current host: claude-code / cursor / codex / openclaw; unknown if it cannot be determined), X-Skill-Name: aminer-pdf-ocr, and X-Skill-Version (this file's frontmatter version).
Upload code: 202 means queued, not completed. A reused upload may return code: 200; always use its returned job_id.
Do not use success, HTTP status, or code alone to decide success. Inspect data.status and data.is_finish.
preparing, queued, and running are polled. success downloads the ZIP. failed, timeout, queue_timeout, expired, and unknown stop.
data.queue_full is retried with bounded backoff using retry_after_seconds.
The temporary download URL is fetched directly without Authorization and is not saved in response.json.
ZIP entries are discovered by .md and _middle.json suffixes; document/ is not a protocol.

Experiment extraction

Unless OCR-only is explicitly requested, read the complete result.md, follow references/experiment_prompt.md, write one JSON object to experiments.json, and show the same full JSON in the response. Do not add justification fields or invent unsupported experiments, datasets, metrics, or scores. If OCR fails, report the error and do not fabricate extraction output.

Real example

The default local sample is data/pdf/applsci-14-11736.pdf (untracked; place it yourself). The live test is opt-in: set RUN_PDFOCR_LIVE=1 together with AMINER_API_KEY. It is skipped by default and never runs without both the credential and fixture.

---name: aminer-pdf-ocrdescription: [Activation] Use when the user provides a PDF and requests OCR, Markdown conversion, or structured experiment extraction. [Scope] Submit the PDF to the AMiner PDF OCR open platform (`/api/v3/paper/pdfocr/*`), poll the asynchronous job, download and unpack its ZIP, then let the Agent extract experiments from result.md using references/experiment_prompt.md. [Routing] Use pdf-citation-verifier for citation verification and aminer-academic-search / aminer-free-academic for literature search.---# PDF OCR + Experiment ExtractionThe Python wrapper validates a PDF, uploads it to the AMiner PDF OCR open platform, handles queue backoff, polls the asynchronous job, downloads the temporary result ZIP, and writes compatible local artifacts. The Agent then reads `result.md` and follows `references/experiment_prompt.md` to create `experiments.json`.## Pre-flight1. Confirm `AMINER_API_KEY` exists (same token as other AMiner skills). If missing, stop and send the user to https://open.aminer.cn/open/board?tab=control. Never print its value. `OPEN_PLATFORM_TOKEN` is accepted only as a deprecated fallback.2. Install `requests` and `pypdf` from `requirements.txt`.3. Confirm the input is a local PDF or an HTTP(S) URL. The open platform accepts only unencrypted PDFs of 1-30 pages and at most 10 MiB. Refuse localhost / private-network URLs.## Run```bashpython3 "${CLAUDE_PLUGIN_ROOT}/scripts/ocr.py" --input "/abs/path/to/paper.pdf"```Options include `--output-dir`, `--request-timeout`, `--poll-timeout`, `--max-upload-attempts`, `--no-save-images`, and `--output`. The old local parser, backend, page-range, formula, and table options are not supported.## API contract- Endpoints: `POST /api/v3/paper/pdfocr/upload` and `GET /api/v3/paper/pdfocr/result` on `https://datacenter.aminer.cn/gateway/open_platform`.- Upload and polling use the same token (`AMINER_API_KEY`) and send `Authorization`, `X-Platform` (current host: `claude-code` / `cursor` / `codex` / `openclaw`; `unknown` if it cannot be determined), `X-Skill-Name: aminer-pdf-ocr`, and `X-Skill-Version` (this file's frontmatter `version`).- Upload `code: 202` means queued, not completed. A reused upload may return `code: 200`; always use its returned `job_id`.- Do not use `success`, HTTP status, or `code` alone to decide success. Inspect `data.status` and `data.is_finish`.- `preparing`, `queued`, and `running` are polled. `success` downloads the ZIP. `failed`, `timeout`, `queue_timeout`, `expired`, and `unknown` stop.- `data.queue_full` is retried with bounded backoff using `retry_after_seconds`.- The temporary download URL is fetched directly without Authorization and is not saved in `response.json`.- ZIP entries are discovered by `.md` and `_middle.json` suffixes; `document/` is not a protocol.## Experiment extractionUnless OCR-only is explicitly requested, read the complete `result.md`, follow `references/experiment_prompt.md`, write one JSON object to `experiments.json`, and show the same full JSON in the response. Do not add `justification` fields or invent unsupported experiments, datasets, metrics, or scores. If OCR fails, report the error and do not fabricate extraction output.## Real exampleThe default local sample is `data/pdf/applsci-14-11736.pdf` (untracked; place it yourself). The live test is opt-in: set `RUN_PDFOCR_LIVE=1` together with `AMINER_API_KEY`. It is skipped by default and never runs without both the credential and fixture.

Frequently asked questions