improvement(skills): add typed JSON outputs guidance to add-tools, add-block, and add-integration skills

Author: waleedlatif1

.claude/commands/add-block.md

@@ -532,6 +532,41 @@ outputs: {
 }
 ```
 
+### Typed JSON Outputs
+
+When using `type: 'json'` and you know the object shape in advance, **describe the inner fields in the description** so downstream blocks know what properties are available. For well-known, stable objects, use nested output definitions instead:
+
+```typescript
+outputs: {
+  // BAD: Opaque json with no info about what's inside
+  plan: { type: 'json', description: 'Zone plan information' },
+
+  // GOOD: Describe the known fields in the description
+  plan: {
+    type: 'json',
+    description: 'Zone plan information (id, name, price, currency, frequency, is_subscribed)',
+  },
+
+  // BEST: Use nested output definition when the shape is stable and well-known
+  plan: {
+    id: { type: 'string', description: 'Plan identifier' },
+    name: { type: 'string', description: 'Plan name' },
+    price: { type: 'number', description: 'Plan price' },
+    currency: { type: 'string', description: 'Price currency' },
+  },
+}
+```
+
+Use the nested pattern when:
+- The object has a small, stable set of fields (< 10)
+- Downstream blocks will commonly access specific properties
+- The API response shape is well-documented and unlikely to change
+
+Use `type: 'json'` with a descriptive string when:
+- The object has many fields or a dynamic shape
+- It represents a list/array of items
+- The shape varies by operation
+
 ## V2 Block Pattern
 
 When creating V2 blocks (alongside legacy V1):

.claude/commands/add-integration.md

@@ -102,6 +102,7 @@ export const {service}{Action}Tool: ToolConfig<Params, Response> = {
 - Always use `?? []` for optional array fields
 - Set `optional: true` for outputs that may not exist
 - Never output raw JSON dumps - extract meaningful fields
+- When using `type: 'json'` and you know the object shape, define `properties` with the inner fields so downstream consumers know the structure. Only use bare `type: 'json'` when the shape is truly dynamic
 
 ## Step 3: Create Block
 

.claude/commands/add-tools.md

@@ -147,9 +147,18 @@ closedAt: {
 },
 ```
 
-### Nested Properties
-For complex outputs, define nested structure:
+### Typed JSON Outputs
+
+When using `type: 'json'` and you know the object shape in advance, **always define the inner structure** using `properties` so downstream consumers know what fields are available:
+
 ```typescript
+// BAD: Opaque json with no info about what's inside
+metadata: {
+  type: 'json',
+  description: 'Response metadata',
+},
+
+// GOOD: Define the known properties
 metadata: {
   type: 'json',
   description: 'Response metadata',
@@ -159,7 +168,10 @@ metadata: {
     count: { type: 'number', description: 'Total count' },
   },
 },
+```
 
+For arrays of objects, define the item structure:
+```typescript
 items: {
   type: 'array',
   description: 'List of items',
@@ -173,6 +185,8 @@ items: {
 },
 ```
 
+Only use bare `type: 'json'` without `properties` when the shape is truly dynamic or unknown.
+
 ## Critical Rules for transformResponse
 
 ### Handle Nullable Fields