diff --git a/lexicons/org/tangled/embed/commit.json b/lexicons/org/tangled/embed/commit.json
new file mode 100644
index 00000000..b9184ca4
--- /dev/null
+++ b/lexicons/org/tangled/embed/commit.json
@@ -0,0 +1,17 @@
+{
+  "lexicon": 1,
+  "id": "org.tangled.embed.commit",
+  "defs": {
+    "main": {
+      "type": "object",
+      "required": [
+        "repo",
+        "commit"
+      ],
+      "properties": {
+        "repo": { "type": "string", "format": "did" },
+        "commit": { "type": "ref", "ref": "org.tangled.git.object" }
+      }
+    }
+  }
+}
diff --git a/lexicons/org/tangled/embed/unspecced/file.json b/lexicons/org/tangled/embed/unspecced/file.json
new file mode 100644
index 00000000..413d6e8a
--- /dev/null
+++ b/lexicons/org/tangled/embed/unspecced/file.json
@@ -0,0 +1,19 @@
+{
+  "lexicon": 1,
+  "id": "org.tangled.embed.unspecced.file",
+  "defs": {
+    "main": {
+      "type": "object",
+      "required": [
+        "repo",
+        "commit",
+        "path"
+      ],
+      "properties": {
+        "repo": { "type": "string", "format": "did" },
+        "commit": { "type": "ref", "ref": "org.tangled.git.object" },
+        "path": { "type": "string" }
+      }
+    }
+  }
+}
diff --git a/lexicons/org/tangled/feed/comment.json b/lexicons/org/tangled/feed/comment.json
new file mode 100644
index 00000000..f7eae169
--- /dev/null
+++ b/lexicons/org/tangled/feed/comment.json
@@ -0,0 +1,42 @@
+{
+  "lexicon": 1,
+  "id": "org.tangled.feed.comment",
+  "defs": {
+    "main": {
+      "type": "record",
+      "key": "tid",
+      "record": {
+        "type": "object",
+        "required": [
+          "subject",
+          "body",
+          "createdAt"
+        ],
+        "properties": {
+          "subject": {
+            "type": "union",
+            "refs": ["com.atproto.repo.strongRef"]
+          },
+          "replyTo": {
+            "type": "ref",
+            "ref": "com.atproto.repo.strongRef"
+          },
+          "body": {
+            "type": "union",
+            "refs": ["org.tangled.markup.markdown"]
+          },
+          "embed": {
+            "type": "union",
+            "refs": [
+              "org.tangled.embed.commit"
+            ]
+          },
+          "createdAt": {
+            "type": "string",
+            "format": "datetime"
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/lexicons/org/tangled/feed/reaction.json b/lexicons/org/tangled/feed/reaction.json
new file mode 100644
index 00000000..be26c870
--- /dev/null
+++ b/lexicons/org/tangled/feed/reaction.json
@@ -0,0 +1,33 @@
+{
+  "lexicon": 1,
+  "id": "org.tangled.feed.reaction",
+  "defs": {
+    "main": {
+      "type": "record",
+      "key": "tid",
+      "record": {
+        "type": "object",
+        "required": [
+          "subject",
+          "reaction",
+          "createdAt"
+        ],
+        "properties": {
+          "subject": {
+            "type": "ref",
+            "ref": "com.atproto.repo.strongRef"
+          },
+          "reaction": {
+            "type": "string",
+            "maxGraphemes": 1,
+            "knownValues": ["👍", "👎", "😆", "🎉", "🫤", "❤️", "🚀", "👀"]
+          },
+          "createdAt": {
+            "type": "string",
+            "format": "datetime"
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/lexicons/org/tangled/feed/star.json b/lexicons/org/tangled/feed/star.json
new file mode 100644
index 00000000..32dfb8bd
--- /dev/null
+++ b/lexicons/org/tangled/feed/star.json
@@ -0,0 +1,42 @@
+{
+  "lexicon": 1,
+  "id": "org.tangled.feed.star",
+  "defs": {
+    "main": {
+      "type": "record",
+      "key": "tid",
+      "record": {
+        "type": "object",
+        "required": [
+          "subject",
+          "createdAt"
+        ],
+        "properties": {
+          "subject": {
+            "type": "union",
+            "refs": ["#repo", "#record"],
+            "closed": true
+          },
+          "createdAt": {
+            "type": "string",
+            "format": "datetime"
+          }
+        }
+      }
+    },
+    "repo": {
+      "type": "object",
+      "required": ["identity"],
+      "properties": {
+        "identity": { "type": "string", "format": "did" }
+      }
+    },
+    "record": {
+      "type": "object",
+      "required": ["record"],
+      "properties": {
+        "record": { "type": "ref", "ref": "com.atproto.repo.strongRef" }
+      }
+    }
+  }
+}
diff --git a/lexicons/org/tangled/markup/embed/image.json b/lexicons/org/tangled/markup/embed/image.json
new file mode 100644
index 00000000..49ebcd3d
--- /dev/null
+++ b/lexicons/org/tangled/markup/embed/image.json
@@ -0,0 +1,17 @@
+{
+  "lexicon": 1,
+  "id": "org.tangled.markup.embed.image",
+  "defs": {
+    "main": {
+      "type": "object",
+      "required": ["image"],
+      "properties": {
+        "image": {
+          "type": "blob",
+          "accept": ["image/*"],
+          "maxSize": 1000000
+        }
+      }
+    }
+  }
+}
diff --git a/lexicons/org/tangled/markup/embed/video.json b/lexicons/org/tangled/markup/embed/video.json
new file mode 100644
index 00000000..09f85f1f
--- /dev/null
+++ b/lexicons/org/tangled/markup/embed/video.json
@@ -0,0 +1,17 @@
+{
+  "lexicon": 1,
+  "id": "org.tangled.markup.embed.video",
+  "defs": {
+    "main": {
+      "type": "object",
+      "required": ["video"],
+      "properties": {
+        "video": {
+          "type": "blob",
+          "accept": ["video/mp4"],
+          "maxSize": 5000000
+        }
+      }
+    }
+  }
+}
diff --git a/lexicons/org/tangled/markup/markdown.json b/lexicons/org/tangled/markup/markdown.json
new file mode 100644
index 00000000..a7b34a25
--- /dev/null
+++ b/lexicons/org/tangled/markup/markdown.json
@@ -0,0 +1,43 @@
+{
+  "lexicon": 1,
+  "id": "org.tangled.markup.markdown",
+  "defs": {
+    "main": {
+      "type": "object",
+      "required": ["text"],
+      "description": "Tangled Flavored Markdown format text",
+      "properties": {
+        "text": {
+          "type": "string",
+          "maxGraphemes": 65536,
+          "maxLength": 262144,
+          "description": "Final post-processed markdown content that will be rendered"
+        },
+        "blobs": {
+          "type": "array",
+          "items": {
+            "type": "union",
+            "refs": [
+              "org.tangled.markup.embed.image",
+              "org.tangled.markup.embed.video"
+            ]
+          },
+          "description": "list of blobs referenced in markdown"
+        }
+      }
+    },
+    "inline": {
+      "type": "object",
+      "required": ["text"],
+      "description": "Tangled Flavored Markdown format text (inline)",
+      "properties": {
+        "text": {
+          "type": "string",
+          "maxGraphemes": 256,
+          "maxLength": 1024,
+          "description": "Final post-processed markdown content that will be rendered"
+        }
+      }
+    }
+  }
+}
diff --git a/lexicons/org/tangled/markup/plaintext.json b/lexicons/org/tangled/markup/plaintext.json
new file mode 100644
index 00000000..f84f69e5
--- /dev/null
+++ b/lexicons/org/tangled/markup/plaintext.json
@@ -0,0 +1,16 @@
+{
+  "lexicon": 1,
+  "id": "org.tangled.markup.plaintext",
+  "defs": {
+    "main": {
+      "type": "object",
+      "required": ["text"],
+      "properties": {
+        "text": {
+          "type": "string",
+          "maxLength": 262144
+        }
+      }
+    }
+  }
+}