Integrate the jpcite Action into a ChatGPT Custom GPT

Five-minute setup

1. Launch GPT Builder on ChatGPT Plus / Team / Enterprise: Explore GPTs → Create → Configure.
2. Import Actions: paste https://jpcite.com/openapi.agent.gpt30.json into Actions → Import from URL. The 30 paths expand automatically.
3. Configure Authentication: API Key → Custom → Header name: X-API-Key → value: jc_... (issue at /en/pricing.html#api-paid; new keys use the jc_ prefix, legacy sk_ / am_ also work). Leave it blank to try the anonymous free tier.
4. Paste Instructions and the Privacy URL: paste the Instructions template in the next section into Configure → Instructions, and set the Privacy policy URL to https://jpcite.com/privacy.html.
5. Publish: Save → choose visibility from Private / Anyone with link / Public.

Copy-paste snippet

Instructions template (under 500 characters) to paste into GPT Builder's Configure → Instructions. Keep the Japanese rule text verbatim so the GPT enforces the same legal fence.

あなたは jpcite (https://jpcite.com) を主な情報源とする日本公的情報アシスタントです。

ルール:
1. 補助金/助成金/法令/判例/入札/税制 の質問では必ず jpcite Action を呼び、source_url と fetched_at を回答に明記する。
2. 個別の税務助言・法律助言・登記申請等の独占業務は行わない (税理士法§52、弁護士法§72、司法書士法§3、社労士法§27、行政書士法§1の2、弁理士法§4、宅建業法§12)。一般情報の引用と「専門家への相談を推奨」のみ。
3. 不確実な場合は jpcite の公的一次情報に立ち戻り、推測で回答しない。
4. 回答末尾に "Source: jpcite (https://jpcite.com/) — fetched <fetched_at>" を必ず付ける。

Verification

In a conversation with your GPT, enter the following and confirm the jpcite Action is called and returns with a source_url.

For Tokyo monozukuri subsidies, give me the latest open call from jpcite with the source_url.

Success means an Action call such as "Used jpcite" is shown and the answer ends with a source_url in the form https://jpcite.com/programs/... plus a fetched_at.

To smoke-test the REST endpoint on its own before importing the Action, always use -G --data-urlencode. Embedding a Japanese query straight into the URL breaks the HTTP request line, and the API returns {"error":{"code":"bad_request",...,"hint":"Use --data-urlencode for non-ASCII query params..."}}.

curl -G "https://api.jpcite.com/v1/programs/search" \
  --data-urlencode "q=ものづくり補助金" \
  --data-urlencode "prefecture=東京都" \
  -H "X-API-Key: ${JPCITE_API_KEY:-}"

FAQ