Added value: +{
+  "description": "Optional HTML-only watch rule: up to4 of href,title,alt,aria-label; default[] retains existing text-only normalization. Distinct names are sorted; nonempty rules create a separate version1 watch/baseline. Records bounded meaningful attributes within the saved selector or filtered page, including same-text link destination changes. Cannot be supplied with watch_id, even[]. Unsafe hrefs are hashed, never fetched. Limits:200 elements,2048 characters/value,32768 evidence bytes; excess fails, never clips silently.",
+  "items": {
+    "description": "One explicitly observed HTML attribute: href (a/area only),title,alt or aria-label. No class/style/event attributes; links are inert evidence and never fetched.",
+    "enum": [
+      "alt",
+      "aria-label",
+      "href",
+      "title"
+    ],
+    "type": "string"
+  },
+  "maxItems": 4,
+  "type": "array"
+}

Added value: +[
+  {
+    "required": [
+      "url"
+    ]
+  },
+  {
+    "required": [
+      "watch_id"
+    ]
+  }
+]

Previous value: -"Supply exactly one of url or watch_id. URL must be absolute public HTTPS on port 443, at most 4096 characters, with no credentials/private targets, e.g. 'https://example.com/docs'. With url, optional content rules identify the watch; an existing watch is reused or a new one is created by this paid Check. Separate registration is not required. No JavaScript rendering."New value: +"Supply exactly one of url or watch_id. URL must be absolute public HTTPS on port 443, at most 4096 characters, with no credentials/private targets, e.g. 'https://example.com/docs'. Fresh402's own service URLs, including its discovery /openapi.json, cannot be targets; choose an external public document. With url, optional content rules identify the watch; an existing watch is reused or a new one is created by this paid Check. Separate registration is not required. No JavaScript rendering."

Added value: +"Paid Check input: exactly one of url or watch_id is required. Content rules are allowed only on the url path; watch_id always reuses saved rules. Optional previous_hash overrides the reference hash; max_age_seconds controls cache reuse and include_diff controls text-diff output."

Added value: +[
+  {
+    "include_diff": true,
+    "max_age_seconds": 0,
+    "selector": "main",
+    "url": "https://example.com/docs"
+  }
+]

Added value: +"Optional JSON-only exclusions, up to 20 paths of 1-256 characters starting with '/'; '~0'/'~1' escapes and '*' segments are supported. Example: ['/updated_at']. Accepted only with url; default []. With watch_id, omit entirely (including []): saved paths are reused."

Added value: +"JSON Pointer-style path, 1-256 characters, starting with '/'. Decode '~0' as '~' and '~1' as '/'; '*' matches all object keys or array elements. Example: '/items/*/updated_at'."

Added value: +"Optional HTML-only exclusion array, up to 20 supported CSS selectors of 1-256 characters each, e.g. ['.timestamp']. Accepted only with url; default []. With watch_id, omit the field entirely (including []): saved exclusions are reused."

Added value: +"HTML element(s) to remove before normalization: a supported CSS selector, 1-256 characters, e.g. '.timestamp' or 'nav'."

Added value: +"Optional boolean; runtime default: true. Request a compact deterministic text diff when content changed and compatible prior text is retained. False omits the diff; true cannot recover unavailable old content and does not enable Smart Diff's structural analysis."

Added value: +"Optional integer cache age in seconds, 0-86400; runtime default: 0. A positive value permits reuse of a sufficiently recent watch result without fetching. Zero contacts the source (conditional HTTP may return 304). Cached Checks still require payment; this does not schedule background polling."

Added value: +"Optional previous Fresh402 content hash: exactly 64 hexadecimal characters, case-insensitive. Overrides comparison with the watch's current stored hash. Omit to use that stored hash; a new URL watch without a prior hash returns changed:null. Hash comparison does not require retained old text, but a text diff does; a hash cannot reconstruct missing content."

Added value: +"Optional HTML CSS scope, 1-256 characters, e.g. 'main'; accepted only with url. Omit for the page after built-in noise removal. No match returns 422; not supported for JSON/plain text. With watch_id, omit this field: the saved selector is reused."

Added value: +"Supply exactly one of url or watch_id. URL must be absolute public HTTPS on port 443, at most 4096 characters, with no credentials/private targets, e.g. 'https://example.com/docs'. With url, optional content rules identify the watch; an existing watch is reused or a new one is created by this paid Check. Separate registration is not required. No JavaScript rendering."

Added value: +"Supply exactly one of watch_id or url. An existing ID returned by fresh402_register (free), POST /v1/register, or a URL-based Check: 'w_' followed by 32 lowercase hexadecimal characters. Reuses that watch's stored URL and rules. When supplied, omit selector, ignore_selectors and ignore_json_paths entirely, even empty arrays. Do not invent an ID."

Added value: +"^\\/"

Added value: +4096