Nanjing University

Nanjing University Library Catalog (OPAC)

The library's catalog host. It is live but restricted to the campus network: every route, including an OAI-PMH probe, returns HTTP 403 with the body "请使用南大VPN访问!" ("please access via the NJU VPN"). Recorded as gated rather than absent — this is a finding about network policy, not evidence that the catalog does not exist.

GitHub

Other Resources

🔗
LibraryCatalog
https://lib.nju.edu.cn/

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/opac"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
aid: nanjing:opac
name: Nanjing University Library Catalog (OPAC)
description: 'The library''s catalog host. It is live but restricted to the campus network: every route,
  including an OAI-PMH probe, returns HTTP 403 with the body "请使用南大VPN访问!" ("please access via the NJU
  VPN"). Recorded as gated rather than absent — this is a finding about network policy, not evidence that
  the catalog does not exist.'
humanURL: https://lib.nju.edu.cn/
baseURL: https://opac.nju.edu.cn/
x-operator: institution
x-operator-evidence: 'opac.nju.edu.cn is under NJU''s own domain and is linked from the library''s own
  site. Probed 2026-09-01: / 403 (nginx, VPN notice), /oai?verb=Identify 403 with the same body.'
tags:
- Library
- Catalog
- Discovery
properties:
- type: LibraryCatalog
  url: https://lib.nju.edu.cn/