diff --git a/schemas/solution.schema.json b/schemas/solution.schema.json
new file mode 100644
index 0000000..9b905fa
--- /dev/null
+++ b/schemas/solution.schema.json
@@ -0,0 +1,239 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://git.machinemachine.ai/m2/market-registry/schemas/solution.schema.json",
+  "title": "Solution",
+  "description": "The installable bundle manifest for the m2 marketplace. Frozen v1 contract (specs/001-market-first-wedge/data-model.md, research.md R3).",
+  "type": "object",
+  "properties": {
+    "schema_version": {
+      "const": "m2.solution.v1"
+    },
+    "solution_id": {
+      "type": "string",
+      "pattern": "^sol_[a-z0-9-]+$"
+    },
+    "name": {
+      "type": "string",
+      "minLength": 1
+    },
+    "summary": {
+      "type": "string",
+      "minLength": 1
+    },
+    "description": {
+      "type": "string"
+    },
+    "intent": {
+      "type": "string",
+      "minLength": 1
+    },
+    "behavior": {
+      "type": "object"
+    },
+    "tools": {
+      "type": "array",
+      "items": {
+        "type": "object"
+      }
+    },
+    "runtime": {
+      "type": "object"
+    },
+    "memory_schema": {
+      "type": "object"
+    },
+    "permissions": {
+      "type": "array",
+      "items": {
+        "type": "object"
+      }
+    },
+    "deployment": {
+      "type": "object",
+      "description": "recipe.yaml ref + entrypoint + verify command",
+      "properties": {
+        "recipe_ref": {
+          "type": "string",
+          "minLength": 1
+        },
+        "entrypoint": {
+          "type": "string",
+          "minLength": 1
+        },
+        "verify_command": {
+          "type": "string",
+          "minLength": 1
+        }
+      },
+      "required": ["recipe_ref", "entrypoint", "verify_command"],
+      "additionalProperties": false
+    },
+    "applicability": {
+      "type": "object",
+      "description": "fedlearn-compatible applicability constraints",
+      "properties": {
+        "image_classes": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        },
+        "roles": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        },
+        "tool_requirements": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        }
+      },
+      "additionalProperties": false
+    },
+    "tenant_scope": {
+      "type": "string",
+      "minLength": 1,
+      "description": "'m2-core' for shared/free, or a tenant id for tenant-scoped work"
+    },
+    "owner_initiated": {
+      "type": "boolean"
+    },
+    "scrub_status": {
+      "type": "object",
+      "properties": {
+        "double_scrubbed": {
+          "type": "boolean"
+        }
+      },
+      "additionalProperties": true
+    },
+    "evidence": {
+      "type": "array",
+      "minItems": 1,
+      "items": {
+        "type": "object",
+        "properties": {
+          "source": {
+            "type": "string",
+            "minLength": 1
+          },
+          "excerpt": {
+            "type": "string"
+          },
+          "machine": {
+            "type": "string"
+          },
+          "session": {
+            "type": "string"
+          },
+          "tokens": {
+            "type": "integer",
+            "minimum": 0
+          },
+          "wall_time": {
+            "type": "number",
+            "minimum": 0
+          }
+        },
+        "required": ["source"],
+        "additionalProperties": false
+      }
+    },
+    "content_hash": {
+      "type": "string",
+      "pattern": "^sha256:[a-f0-9]{64}$"
+    },
+    "price": {
+      "type": "object",
+      "properties": {
+        "amount": {
+          "type": "integer",
+          "minimum": 1
+        },
+        "currency": {
+          "const": "m2cr"
+        },
+        "model": {
+          "type": "string",
+          "enum": ["fixed"]
+        }
+      },
+      "required": ["amount", "currency", "model"],
+      "additionalProperties": false
+    },
+    "seller": {
+      "type": "string",
+      "minLength": 1,
+      "description": "operator_id"
+    },
+    "license": {
+      "type": "object",
+      "properties": {
+        "terms": {
+          "type": "string",
+          "minLength": 1
+        },
+        "major_version_coverage": {
+          "const": true
+        }
+      },
+      "required": ["terms", "major_version_coverage"],
+      "additionalProperties": false
+    },
+    "revenue_split": {
+      "type": "object",
+      "properties": {
+        "platform_pct": {
+          "type": "number",
+          "minimum": 0,
+          "maximum": 100
+        }
+      },
+      "additionalProperties": false
+    }
+  },
+  "required": [
+    "schema_version",
+    "solution_id",
+    "name",
+    "summary",
+    "intent",
+    "deployment",
+    "applicability",
+    "tenant_scope",
+    "evidence",
+    "content_hash",
+    "price",
+    "seller",
+    "license"
+  ],
+  "additionalProperties": false,
+  "if": {
+    "properties": {
+      "tenant_scope": {
+        "const": "m2-core"
+      }
+    },
+    "required": ["tenant_scope"]
+  },
+  "else": {
+    "properties": {
+      "owner_initiated": {
+        "const": true
+      },
+      "scrub_status": {
+        "type": "object",
+        "properties": {
+          "double_scrubbed": {
+            "const": true
+          }
+        },
+        "required": ["double_scrubbed"]
+      }
+    },
+    "required": ["owner_initiated", "scrub_status"]
+  }
+}