diff --git a/docs/writeback-spec-coverage.md b/docs/writeback-spec-coverage.md
index 6f699bd3..0245c03f 100644
--- a/docs/writeback-spec-coverage.md
+++ b/docs/writeback-spec-coverage.md
@@ -22,6 +22,7 @@ Contract-backed means the endpoint uses `contractEndpoint(...)`, loads its reque
 | gmail | None | 0 | 3 | Inline JS schemas. |
 | google-calendar | None | 0 | 1 | Inline JS schemas. |
 | google-drive | None | 0 | 2 | Inline JS schemas. |
+| granola | None | 0 | 2 | Inline JS schemas. |
 | hubspot | None | 0 | 4 | Inline JS schemas. |
 | intercom | None | 0 | 3 | Inline JS schemas. |
 | jira | None | 0 | 4 | Inline JS schemas. |
@@ -31,6 +32,7 @@ Contract-backed means the endpoint uses `contractEndpoint(...)`, loads its reque
 | pipedrive | None | 0 | 4 | Inline JS schemas. |
 | postgres | None | 0 | 2 | Inline JS schemas; database/table shape is runtime-native rather than provider OpenAPI. |
 | redis | None | 0 | 2 | Inline JS schemas; key/value shape is runtime-native rather than provider OpenAPI. |
+| reddit | None | 0 | 2 | Inline JS schemas. |
 | s3 | None | 0 | 2 | Inline JS schemas. |
 | salesforce | None | 0 | 5 | Inline JS schemas. |
 | sharepoint | None | 0 | 2 | Inline JS schemas. |
diff --git a/packages/granola/discovery/granola/.adapter.md b/packages/granola/discovery/granola/.adapter.md
new file mode 100644
index 00000000..1231d26f
--- /dev/null
+++ b/packages/granola/discovery/granola/.adapter.md
@@ -0,0 +1,63 @@
+# Granola adapter
+
+The Granola adapter exposes meeting notes and folders under `/granola`, with writeback routes for creating notes and folders.
+
+Read-only mounts:
+- `/granola/notes/<noteId>.json` - Note records.
+- `/granola/notes/by-id/<noteId>.json` - Note lookup aliases.
+- `/granola/folders/<folderId>.json` - Folder records.
+- `/granola/folders/by-id/<folderId>.json` - Folder lookup aliases.
+
+Resources:
+
+| Resource | Schema | Create example | ID pattern | What it does |
+|---|---|---|---|---|
+| `/granola/notes/<id>.json` | `/granola/notes/.schema.json` | `/granola/notes/.create.example.json` | `^not_[A-Za-z0-9]{14}$` | Creates a Granola note. |
+| `/granola/folders/<id>.json` | `/granola/folders/.schema.json` | `/granola/folders/.create.example.json` | `^fol_[A-Za-z0-9]{14}$` | Creates a Granola folder. |
+
+## Operations
+
+| To... | Do... |
+|---|---|
+| Read | `cat <canonical-resource-path>` after listing the resource directory or following an alias when one is available. Use the resource table and ID patterns below to determine whether a resource uses a bare id, an adapter-specific slug/id filename, or an exact sidecar path such as `content.md`. |
+| Edit | Write the resource update payload to the canonical resource path. For JSON resources, included mutable fields PATCH; fields marked `readOnly` in `.schema.json` are rejected. |
+| Create | Write JSON to any non-canonical filename such as `create request.json`. The adapter creates the record at its canonical resource path and rewrites the draft as `{ "created": "<real-id>", "path": "<canonical-resource-path>", "url": "<provider-url>" }`. |
+| Ignore | Editor scratch files named `partial.json`, `.tmp.json`, `.partial.json`, `*.tmp.json`, or `*.partial.json` are ignored and never treated as create drafts. |
+| Delete | `rm <canonical-resource-path>` for canonical records. |
+
+## ID Patterns
+- `/granola/notes/<id>.json`: `^not_[A-Za-z0-9]{14}$`. Filenames that do not match this pattern are treated as create drafts.
+- `/granola/folders/<id>.json`: `^fol_[A-Za-z0-9]{14}$`. Filenames that do not match this pattern are treated as create drafts.
+
+## Write field contracts
+
+### Create Granola note
+
+Resource: `/granola/notes/<id>.json`
+Schema: `/granola/notes/.schema.json`
+Create example: `/granola/notes/.create.example.json`
+Required fields: `title`.
+Optional fields: `summary_markdown`, `summary_text`, `folder_membership`.
+
+Fields:
+
+- `title` (required, string) - Note title.
+- `summary_markdown` (optional, string) - Markdown note body.
+- `summary_text` (optional, string) - Plain-text note summary.
+- `folder_membership` (optional, array) - Folders the note belongs to.
+
+### Create Granola folder
+
+Resource: `/granola/folders/<id>.json`
+Schema: `/granola/folders/.schema.json`
+Create example: `/granola/folders/.create.example.json`
+Required fields: `name`.
+Optional fields: `parent_folder_id`.
+
+Fields:
+
+- `name` (required, string) - Folder name.
+- `parent_folder_id` (optional, string) - Parent Granola folder id (`fol_…`). Omit for a top-level folder.
+
+## Create Examples
+Read the resource `.schema.json` first, then use the sibling `.create.example.json` as a minimal create document. The example intentionally omits read-only fields.
diff --git a/packages/granola/discovery/granola/folders/.create.example.json b/packages/granola/discovery/granola/folders/.create.example.json
new file mode 100644
index 00000000..a23a4b6b
--- /dev/null
+++ b/packages/granola/discovery/granola/folders/.create.example.json
@@ -0,0 +1,3 @@
+{
+  "name": "Replace example folder name"
+}
diff --git a/packages/granola/discovery/granola/folders/.schema.json b/packages/granola/discovery/granola/folders/.schema.json
new file mode 100644
index 00000000..2f3b0767
--- /dev/null
+++ b/packages/granola/discovery/granola/folders/.schema.json
@@ -0,0 +1,86 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "Granola folder",
+  "type": "object",
+  "required": [
+    "name"
+  ],
+  "properties": {
+    "name": {
+      "type": "string",
+      "description": "Folder name.",
+      "minLength": 1
+    },
+    "parent_folder_id": {
+      "type": "string",
+      "description": "Parent Granola folder id (`fol_…`). Omit for a top-level folder."
+    },
+    "id": {
+      "type": "string",
+      "description": "Provider canonical record id.",
+      "readOnly": true
+    },
+    "createdAt": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Provider creation timestamp.",
+      "readOnly": true
+    },
+    "updatedAt": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Provider last update timestamp.",
+      "readOnly": true
+    },
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Provider URL for the record.",
+      "readOnly": true
+    },
+    "identifier": {
+      "type": "string",
+      "description": "Provider human-readable identifier or key.",
+      "readOnly": true
+    },
+    "provider": {
+      "type": "string",
+      "description": "Relayfile provider name.",
+      "readOnly": true
+    },
+    "objectType": {
+      "type": "string",
+      "description": "Relayfile object type.",
+      "readOnly": true
+    },
+    "objectId": {
+      "type": "string",
+      "description": "Relayfile object id.",
+      "readOnly": true
+    },
+    "workspaceId": {
+      "type": "string",
+      "description": "Relayfile workspace id.",
+      "readOnly": true
+    },
+    "connectionId": {
+      "type": "string",
+      "description": "Relayfile connection id.",
+      "readOnly": true
+    },
+    "_webhook": {
+      "type": "object",
+      "description": "Provider webhook metadata captured during sync.",
+      "readOnly": true,
+      "additionalProperties": true
+    },
+    "_connection": {
+      "type": "object",
+      "description": "Relayfile connection metadata captured during sync.",
+      "readOnly": true,
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": false,
+  "description": "Full resource record schema. Fields marked readOnly are synced from the provider and cannot be written by agents."
+}
diff --git a/packages/granola/discovery/granola/notes/.create.example.json b/packages/granola/discovery/granola/notes/.create.example.json
new file mode 100644
index 00000000..85bffc0a
--- /dev/null
+++ b/packages/granola/discovery/granola/notes/.create.example.json
@@ -0,0 +1,4 @@
+{
+  "title": "Replace example note title",
+  "summary_markdown": "# Notes\n\nReplace example note body."
+}
diff --git a/packages/granola/discovery/granola/notes/.schema.json b/packages/granola/discovery/granola/notes/.schema.json
new file mode 100644
index 00000000..274c1df5
--- /dev/null
+++ b/packages/granola/discovery/granola/notes/.schema.json
@@ -0,0 +1,99 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "Granola note",
+  "type": "object",
+  "required": [
+    "title"
+  ],
+  "properties": {
+    "title": {
+      "type": "string",
+      "description": "Note title.",
+      "minLength": 1
+    },
+    "summary_markdown": {
+      "type": "string",
+      "description": "Markdown note body."
+    },
+    "summary_text": {
+      "type": "string",
+      "description": "Plain-text note summary."
+    },
+    "folder_membership": {
+      "type": "array",
+      "description": "Folders the note belongs to.",
+      "items": {
+        "type": "object",
+        "description": "Folder membership entry. Provide the Granola folder `id` (`fol_…`). List `/granola/folders/` to find available folders.",
+        "additionalProperties": true
+      }
+    },
+    "id": {
+      "type": "string",
+      "description": "Provider canonical record id.",
+      "readOnly": true
+    },
+    "createdAt": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Provider creation timestamp.",
+      "readOnly": true
+    },
+    "updatedAt": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Provider last update timestamp.",
+      "readOnly": true
+    },
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Provider URL for the record.",
+      "readOnly": true
+    },
+    "identifier": {
+      "type": "string",
+      "description": "Provider human-readable identifier or key.",
+      "readOnly": true
+    },
+    "provider": {
+      "type": "string",
+      "description": "Relayfile provider name.",
+      "readOnly": true
+    },
+    "objectType": {
+      "type": "string",
+      "description": "Relayfile object type.",
+      "readOnly": true
+    },
+    "objectId": {
+      "type": "string",
+      "description": "Relayfile object id.",
+      "readOnly": true
+    },
+    "workspaceId": {
+      "type": "string",
+      "description": "Relayfile workspace id.",
+      "readOnly": true
+    },
+    "connectionId": {
+      "type": "string",
+      "description": "Relayfile connection id.",
+      "readOnly": true
+    },
+    "_webhook": {
+      "type": "object",
+      "description": "Provider webhook metadata captured during sync.",
+      "readOnly": true,
+      "additionalProperties": true
+    },
+    "_connection": {
+      "type": "object",
+      "description": "Relayfile connection metadata captured during sync.",
+      "readOnly": true,
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": false,
+  "description": "Full resource record schema. Fields marked readOnly are synced from the provider and cannot be written by agents."
+}
diff --git a/packages/reddit/discovery/reddit/.adapter.md b/packages/reddit/discovery/reddit/.adapter.md
new file mode 100644
index 00000000..aa09e5b9
--- /dev/null
+++ b/packages/reddit/discovery/reddit/.adapter.md
@@ -0,0 +1,65 @@
+# Reddit adapter
+
+The Reddit adapter exposes tracked subreddits and posts under `/reddit`, with writeback routes for tracking subreddits and creating posts.
+
+Read-only mounts:
+- `/reddit/subreddits/<subreddit>.json` - Tracked subreddit records.
+- `/reddit/subreddits/<subreddit>/posts/<title>__<postId>.json` - Post records scoped by subreddit.
+- `/reddit/posts/by-id/<subreddit>__<postId>.json` - Post lookup aliases.
+- `/reddit/posts/by-status/<status>/<subreddit>__<postId>.json` - Post status aliases.
+
+Resources:
+
+| Resource | Schema | Create example | ID pattern | What it does |
+|---|---|---|---|---|
+| `/reddit/subreddits/<id>.json` | `/reddit/subreddits/.schema.json` | `/reddit/subreddits/.create.example.json` | `^[A-Za-z0-9_][A-Za-z0-9_-]{1,63}$` | Starts tracking a subreddit so its posts sync under `/reddit`. |
+| `/reddit/subreddits/{subreddit}/posts/<id>.json` | `/reddit/subreddits/{subreddit}/posts/.schema.json` | `/reddit/subreddits/{subreddit}/posts/.create.example.json` | `^[A-Za-z0-9_/-]+$` | Submits a post to the subreddit named by the path. |
+
+## Operations
+
+| To... | Do... |
+|---|---|
+| Read | `cat <canonical-resource-path>` after listing the resource directory or following an alias when one is available. Use the resource table and ID patterns below to determine whether a resource uses a bare id, an adapter-specific slug/id filename, or an exact sidecar path such as `content.md`. |
+| Edit | Write the resource update payload to the canonical resource path. For JSON resources, included mutable fields PATCH; fields marked `readOnly` in `.schema.json` are rejected. |
+| Create | Write JSON to any non-canonical filename such as `create request.json`. The adapter creates the record at its canonical resource path and rewrites the draft as `{ "created": "<real-id>", "path": "<canonical-resource-path>", "url": "<provider-url>" }`. |
+| Ignore | Editor scratch files named `partial.json`, `.tmp.json`, `.partial.json`, `*.tmp.json`, or `*.partial.json` are ignored and never treated as create drafts. |
+| Delete | `rm <canonical-resource-path>` for canonical records. |
+
+## ID Patterns
+- `/reddit/subreddits/<id>.json`: `^[A-Za-z0-9_][A-Za-z0-9_-]{1,63}$`. Filenames that do not match this pattern are treated as create drafts.
+- `/reddit/subreddits/{subreddit}/posts/<id>.json`: `^[A-Za-z0-9_/-]+$`. Filenames that do not match this pattern are treated as create drafts.
+
+## Write field contracts
+
+### Track Reddit subreddit
+
+Resource: `/reddit/subreddits/<id>.json`
+Schema: `/reddit/subreddits/.schema.json`
+Create example: `/reddit/subreddits/.create.example.json`
+Required fields: `name`.
+Optional fields: none.
+
+Fields:
+
+- `name` (required, string) - Subreddit name without the `r/` prefix.
+
+### Create Reddit post
+
+Resource: `/reddit/subreddits/{subreddit}/posts/<id>.json`
+Schema: `/reddit/subreddits/{subreddit}/posts/.schema.json`
+Create example: `/reddit/subreddits/{subreddit}/posts/.create.example.json`
+Required fields: `title`.
+Optional fields: `text`, `link_url`, `kind`, `flair_id`, `nsfw`, `spoiler`.
+
+Fields:
+
+- `title` (required, string) - Post title.
+- `text` (optional, string) - Self-post body. Used when `kind` is `self`.
+- `link_url` (optional, string, uri) - External URL for link posts. Used when `kind` is `link`.
+- `kind` (optional, enum) - Post kind. Defaults to `link` when `link_url` is provided, otherwise `self`. Allowed values: `self`, `link`.
+- `flair_id` (optional, string) - Subreddit flair template id.
+- `nsfw` (optional, boolean) - Whether the post is marked NSFW.
+- `spoiler` (optional, boolean) - Whether the post is marked as a spoiler.
+
+## Create Examples
+Read the resource `.schema.json` first, then use the sibling `.create.example.json` as a minimal create document. The example intentionally omits read-only fields.
diff --git a/packages/reddit/discovery/reddit/subreddits/.create.example.json b/packages/reddit/discovery/reddit/subreddits/.create.example.json
new file mode 100644
index 00000000..d0c505b8
--- /dev/null
+++ b/packages/reddit/discovery/reddit/subreddits/.create.example.json
@@ -0,0 +1,3 @@
+{
+  "name": "selfhosted"
+}
diff --git a/packages/reddit/discovery/reddit/subreddits/.schema.json b/packages/reddit/discovery/reddit/subreddits/.schema.json
new file mode 100644
index 00000000..59ecb5ed
--- /dev/null
+++ b/packages/reddit/discovery/reddit/subreddits/.schema.json
@@ -0,0 +1,82 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "Track Reddit subreddit",
+  "type": "object",
+  "required": [
+    "name"
+  ],
+  "properties": {
+    "name": {
+      "type": "string",
+      "description": "Subreddit name without the `r/` prefix.",
+      "minLength": 1
+    },
+    "id": {
+      "type": "string",
+      "description": "Provider canonical record id.",
+      "readOnly": true
+    },
+    "createdAt": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Provider creation timestamp.",
+      "readOnly": true
+    },
+    "updatedAt": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Provider last update timestamp.",
+      "readOnly": true
+    },
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Provider URL for the record.",
+      "readOnly": true
+    },
+    "identifier": {
+      "type": "string",
+      "description": "Provider human-readable identifier or key.",
+      "readOnly": true
+    },
+    "provider": {
+      "type": "string",
+      "description": "Relayfile provider name.",
+      "readOnly": true
+    },
+    "objectType": {
+      "type": "string",
+      "description": "Relayfile object type.",
+      "readOnly": true
+    },
+    "objectId": {
+      "type": "string",
+      "description": "Relayfile object id.",
+      "readOnly": true
+    },
+    "workspaceId": {
+      "type": "string",
+      "description": "Relayfile workspace id.",
+      "readOnly": true
+    },
+    "connectionId": {
+      "type": "string",
+      "description": "Relayfile connection id.",
+      "readOnly": true
+    },
+    "_webhook": {
+      "type": "object",
+      "description": "Provider webhook metadata captured during sync.",
+      "readOnly": true,
+      "additionalProperties": true
+    },
+    "_connection": {
+      "type": "object",
+      "description": "Relayfile connection metadata captured during sync.",
+      "readOnly": true,
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": false,
+  "description": "Full resource record schema. Fields marked readOnly are synced from the provider and cannot be written by agents."
+}
diff --git a/packages/reddit/discovery/reddit/subreddits/{subreddit}/posts/.create.example.json b/packages/reddit/discovery/reddit/subreddits/{subreddit}/posts/.create.example.json
new file mode 100644
index 00000000..514a1b13
--- /dev/null
+++ b/packages/reddit/discovery/reddit/subreddits/{subreddit}/posts/.create.example.json
@@ -0,0 +1,5 @@
+{
+  "title": "Replace example post title",
+  "text": "Replace example post body.",
+  "kind": "self"
+}
diff --git a/packages/reddit/discovery/reddit/subreddits/{subreddit}/posts/.schema.json b/packages/reddit/discovery/reddit/subreddits/{subreddit}/posts/.schema.json
new file mode 100644
index 00000000..03f2c33d
--- /dev/null
+++ b/packages/reddit/discovery/reddit/subreddits/{subreddit}/posts/.schema.json
@@ -0,0 +1,110 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "title": "Reddit post",
+  "type": "object",
+  "required": [
+    "title"
+  ],
+  "properties": {
+    "title": {
+      "type": "string",
+      "description": "Post title.",
+      "minLength": 1
+    },
+    "text": {
+      "type": "string",
+      "description": "Self-post body. Used when `kind` is `self`."
+    },
+    "link_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "External URL for link posts. Used when `kind` is `link`."
+    },
+    "kind": {
+      "enum": [
+        "self",
+        "link"
+      ],
+      "description": "Post kind. Defaults to `link` when `link_url` is provided, otherwise `self`."
+    },
+    "flair_id": {
+      "type": "string",
+      "description": "Subreddit flair template id."
+    },
+    "nsfw": {
+      "type": "boolean",
+      "description": "Whether the post is marked NSFW."
+    },
+    "spoiler": {
+      "type": "boolean",
+      "description": "Whether the post is marked as a spoiler."
+    },
+    "id": {
+      "type": "string",
+      "description": "Provider canonical record id.",
+      "readOnly": true
+    },
+    "createdAt": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Provider creation timestamp.",
+      "readOnly": true
+    },
+    "updatedAt": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Provider last update timestamp.",
+      "readOnly": true
+    },
+    "url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Provider URL for the record.",
+      "readOnly": true
+    },
+    "identifier": {
+      "type": "string",
+      "description": "Provider human-readable identifier or key.",
+      "readOnly": true
+    },
+    "provider": {
+      "type": "string",
+      "description": "Relayfile provider name.",
+      "readOnly": true
+    },
+    "objectType": {
+      "type": "string",
+      "description": "Relayfile object type.",
+      "readOnly": true
+    },
+    "objectId": {
+      "type": "string",
+      "description": "Relayfile object id.",
+      "readOnly": true
+    },
+    "workspaceId": {
+      "type": "string",
+      "description": "Relayfile workspace id.",
+      "readOnly": true
+    },
+    "connectionId": {
+      "type": "string",
+      "description": "Relayfile connection id.",
+      "readOnly": true
+    },
+    "_webhook": {
+      "type": "object",
+      "description": "Provider webhook metadata captured during sync.",
+      "readOnly": true,
+      "additionalProperties": true
+    },
+    "_connection": {
+      "type": "object",
+      "description": "Relayfile connection metadata captured during sync.",
+      "readOnly": true,
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": false,
+  "description": "Full resource record schema. Fields marked readOnly are synced from the provider and cannot be written by agents."
+}
diff --git a/packages/reddit/package.json b/packages/reddit/package.json
index fa2c285b..32d41f20 100644
--- a/packages/reddit/package.json
+++ b/packages/reddit/package.json
@@ -28,7 +28,8 @@
     }
   },
   "files": [
-    "dist"
+    "dist",
+    "discovery"
   ],
   "scripts": {
     "typecheck": "tsc --noEmit -p tsconfig.json",
diff --git a/scripts/writeback-discovery-data.mjs b/scripts/writeback-discovery-data.mjs
index 06134e84..04e58a07 100644
--- a/scripts/writeback-discovery-data.mjs
+++ b/scripts/writeback-discovery-data.mjs
@@ -180,6 +180,30 @@ export const adapters = [
       endpoint('/gitlab/projects/{projectPath}/issues/{issueIid}__{slug}/comments/new.json', 'Create GitLab issue note', 'Creates a note on an issue.', ['body'], gitlabIssueNoteProps(), { body: 'Replace example note body.' }),
     ],
   },
+  {
+    slug: 'granola',
+    title: 'Granola adapter',
+    overview:
+      'The Granola adapter exposes meeting notes and folders under `/granola`, with writeback routes for creating notes and folders.',
+    readPaths: [
+      ['/granola/notes/<noteId>.json', 'Note records.'],
+      ['/granola/notes/by-id/<noteId>.json', 'Note lookup aliases.'],
+      ['/granola/folders/<folderId>.json', 'Folder records.'],
+      ['/granola/folders/by-id/<folderId>.json', 'Folder lookup aliases.'],
+    ],
+    endpoints: [
+      endpoint('/granola/notes/new.json', 'Create Granola note', 'Creates a Granola note.', ['title'], {
+        title: str('Note title.', undefined, { minLength: 1 }),
+        summary_markdown: str('Markdown note body.'),
+        summary_text: str('Plain-text note summary.'),
+        folder_membership: arr(obj('Folder membership entry. Provide the Granola folder `id` (`fol_…`). List `/granola/folders/` to find available folders.'), 'Folders the note belongs to.'),
+      }, { title: 'Replace example note title', summary_markdown: '# Notes\n\nReplace example note body.' }),
+      endpoint('/granola/folders/new.json', 'Create Granola folder', 'Creates a Granola folder.', ['name'], {
+        name: str('Folder name.', undefined, { minLength: 1 }),
+        parent_folder_id: str('Parent Granola folder id (`fol_…`). Omit for a top-level folder.'),
+      }, { name: 'Replace example folder name' }),
+    ],
+  },
   {
     slug: 'hubspot',
     title: 'HubSpot adapter',
@@ -371,6 +395,32 @@ export const adapters = [
       endpoint('/pipedrive/activities/new.json', 'Create Pipedrive activity', 'Creates a Pipedrive activity.', ['subject'], pipedriveActivityProps(), { subject: 'Replace example activity subject' }),
     ],
   },
+  {
+    slug: 'reddit',
+    title: 'Reddit adapter',
+    overview:
+      'The Reddit adapter exposes tracked subreddits and posts under `/reddit`, with writeback routes for tracking subreddits and creating posts.',
+    readPaths: [
+      ['/reddit/subreddits/<subreddit>.json', 'Tracked subreddit records.'],
+      ['/reddit/subreddits/<subreddit>/posts/<title>__<postId>.json', 'Post records scoped by subreddit.'],
+      ['/reddit/posts/by-id/<subreddit>__<postId>.json', 'Post lookup aliases.'],
+      ['/reddit/posts/by-status/<status>/<subreddit>__<postId>.json', 'Post status aliases.'],
+    ],
+    endpoints: [
+      endpoint('/reddit/subreddits/new.json', 'Track Reddit subreddit', 'Starts tracking a subreddit so its posts sync under `/reddit`.', ['name'], {
+        name: str('Subreddit name without the `r/` prefix.', undefined, { minLength: 1 }),
+      }, { name: 'selfhosted' }),
+      endpoint('/reddit/subreddits/{subreddit}/posts/new.json', 'Create Reddit post', 'Submits a post to the subreddit named by the path.', ['title'], {
+        title: str('Post title.', undefined, { minLength: 1 }),
+        text: str('Self-post body. Used when `kind` is `self`.'),
+        link_url: str('External URL for link posts. Used when `kind` is `link`.', 'uri'),
+        kind: en(['self', 'link'], 'Post kind. Defaults to `link` when `link_url` is provided, otherwise `self`.'),
+        flair_id: str('Subreddit flair template id.'),
+        nsfw: bool('Whether the post is marked NSFW.'),
+        spoiler: bool('Whether the post is marked as a spoiler.'),
+      }, { title: 'Replace example post title', text: 'Replace example post body.', kind: 'self' }),
+    ],
+  },
   {
     slug: 'salesforce',
     title: 'Salesforce adapter',
diff --git a/scripts/writeback-discovery-normalizer.mjs b/scripts/writeback-discovery-normalizer.mjs
index b284d858..cea6a022 100644
--- a/scripts/writeback-discovery-normalizer.mjs
+++ b/scripts/writeback-discovery-normalizer.mjs
@@ -272,6 +272,16 @@ function idPatternFor(adapterSlug, resourcePath) {
   if (adapterSlug === 'gitlab') {
     return pattern('^[A-Za-z0-9_.:-]+$');
   }
+  if (adapterSlug === 'granola') {
+    return resourcePath.endsWith('/folders')
+      ? pattern('^fol_[A-Za-z0-9]{14}$')
+      : pattern('^not_[A-Za-z0-9]{14}$');
+  }
+  if (adapterSlug === 'reddit') {
+    return resourcePath.endsWith('/posts')
+      ? pattern('^[A-Za-z0-9_/-]+$')
+      : pattern('^[A-Za-z0-9_][A-Za-z0-9_-]{1,63}$');
+  }
   if (adapterSlug === 'github') {
     if (resourcePath === '/github/repos/{owner}/{repo}/pulls/{pullNumber}/merge.json') {
       return pattern('^[1-9]\\d*(?:__.*)?$');