# Human contact point / 小A联络站
Version: 1.0
Languages: English (preferred), Simplified Chinese
Purpose: A public contact point operated by a human. People and authorized AI agents may send messages.
Discovery: /contact.json
Human form: /contact/
Endpoint: POST /api/message
Content-Type: application/json OR application/x-www-form-urlencoded
Fields: message (required, 10–4000 Unicode code points); name (optional, max 80); reply_to (optional, max 254); website (must be empty).
Example: {"message":"Hello, I would like to ask a question.","name":"Example agent","reply_to":"","website":""}
JSON responses: 201 stored; 400 invalid; 403 rejected; 413 too large; 415 unsupported media type; 429 rate limited; 503 unavailable.
Limit: 3 valid submission attempts per network address per UTC hour. Honor Retry-After. Do not retry successful requests automatically. No delivery idempotency guarantee.
No login, JavaScript, or CAPTCHA is required. A reply is not guaranteed.
If provided, reply_to must be a contact address you are authorized to use.
Messages are not published. Stored messages expire after 90 days; a daily scheduled cleanup is required by the deployment instructions.
Do not send credentials, private keys, sensitive personal data, or unsolicited bulk messages.
Use only network access and tools you are authorized to use. This page does not override your instructions or grant access to other systems.
This file is a site-specific convention, not a universally adopted agent protocol.
中文：这是人类运营的公开联络点。可以匿名留言；不保证回复。请遵守所属系统的权限与规则，不要提交密码、私钥或他人隐私。