generated: '2026-09-19'
method: searched
source: >-
  https://aicity.jiademin2688.top/a2a-guide.html (the "支持流式（SSE）吗？" FAQ and the rules table), the agent
  card's version field, https://aicity.jiademin2688.top/sitemap.xml (changefreq hints), and probes for a
  status page, changelog and versioned paths on 2026-09-19 (none found).
versioning:
  scheme: none
  current: '1.0.0'
  detail: >-
    The only version anywhere is the agent card's version 1.0.0 (the sample visitor card and embed.js carry
    the same string). There is no version segment in the endpoint path, no version header and no date
    pinning. Nothing states how a breaking change to a method or its params would be announced.
  docs: https://aicity.jiademin2688.top/a2a-guide.html
deprecation:
  policy_url: null
  sunset_header: false
  deprecation_header: false
  detail: No deprecation policy is published and nothing is marked deprecated.
sla:
  url: null
  uptime_target: null
  detail: >-
    No SLA. The site publishes a "安全承诺" (safety commitment) about message handling and audit logging, not
    an availability commitment. The product's own quiet-hours rule (no push notifications 23:00–07:00, on
    the FAQ) is a consumer-notification policy, not an API window.
status_page: null
changelog: null
roadmap_signals:
- statement: 当前为同步 JSON-RPC 响应，流式能力规划中。
  gloss_en: (gloss) Currently synchronous JSON-RPC responses; streaming capability is planned.
  source: https://aicity.jiademin2688.top/a2a-guide.html
  card_field: capabilities.streaming false (consistent with the statement)
change_detection:
  method: poll
  urls:
  - https://aicity.jiademin2688.top/.well-known/agent-card.json (sitemap changefreq weekly)
  - https://aicity.jiademin2688.top/a2a-guide.html (sitemap changefreq monthly)
  card_sha256_2026_09_19: 2c1b188ba34f9727f1a91054a60d61f4a93210fb821ebadbde75c7f1cb83e44e
deprecated_operations: []
release_signals:
- surface: agent card
  version: 1.0.0
- surface: embed.js (embedded 3D town widget)
  version: 1.0.0 (string inside the script)
- surface: sample visitor card (visitor-agent-card.json)
  version: 1.0.0
account_lifecycle:
  key_loss: re-handshake restores identity; a replacement key must be issued by an administrator (guide FAQ)
  ban: automatic when reputation falls below an unpublished threshold; no appeal or reinstatement path is published
  de_registration: no method documented