v0.4.11: webhook, knowledgebase, billing fixes & redis for sessions

.github/workflows/docs-embeddings.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
         with:
-          bun-version: latest
+          bun-version: 1.2.22
 
       - name: Setup Node
         uses: actions/setup-node@v4

.github/workflows/i18n.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
         with:
-          bun-version: latest
+          bun-version: 1.2.22
 
       - name: Run Lingo.dev translations
         env:
@@ -116,7 +116,7 @@ jobs:
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
         with:
-          bun-version: latest
+          bun-version: 1.2.22
 
       - name: Install dependencies
         run: |

.github/workflows/migrations.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
         with:
-          bun-version: latest
+          bun-version: 1.2.22
 
       - name: Install dependencies
         run: bun install

.github/workflows/publish-cli.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
         with:
-          bun-version: latest
+          bun-version: 1.2.22
 
       - name: Setup Node.js for npm publishing
         uses: actions/setup-node@v4

.github/workflows/publish-ts-sdk.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
         with:
-          bun-version: latest
+          bun-version: 1.2.22
 
       - name: Setup Node.js for npm publishing
         uses: actions/setup-node@v4

.github/workflows/test-build.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
         with:
-          bun-version: latest
+          bun-version: 1.2.22
 
       - name: Setup Node
         uses: actions/setup-node@v4

.github/workflows/trigger-deploy.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
         with:
-          bun-version: latest
+          bun-version: 1.2.22
 
       - name: Install dependencies
         run: bun install

apps/docs/content/docs/en/execution/costs.mdx

@@ -166,6 +166,38 @@ Different subscription plans have different usage limits:
 | **Team** | $500 (pooled) | 50 sync, 100 async |
 | **Enterprise** | Custom | Custom |
 
+## Billing Model
+
+Sim uses a **base subscription + overage** billing model:
+
+### How It Works
+
+**Pro Plan ($20/month):**
+- Monthly subscription includes $20 of usage
+- Usage under $20 → No additional charges
+- Usage over $20 → Pay the overage at month end
+- Example: $35 usage = $20 (subscription) + $15 (overage)
+
+**Team Plan ($40/seat/month):**
+- Pooled usage across all team members
+- Overage calculated from total team usage
+- Organization owner receives one bill
+
+**Enterprise Plans:**
+- Fixed monthly price, no overages
+- Custom usage limits per agreement
+
+### Threshold Billing
+
+When unbilled overage reaches $50, Sim automatically bills the full unbilled amount.
+
+**Example:**
+- Day 10: $70 overage → Bill $70 immediately
+- Day 15: Additional $35 usage ($105 total) → Already billed, no action
+- Day 20: Another $50 usage ($155 total, $85 unbilled) → Bill $85 immediately
+
+This spreads large overage charges throughout the month instead of one large bill at period end.
+
 ## Cost Management Best Practices
 
 1. **Monitor Regularly**: Check your usage dashboard frequently to avoid surprises

apps/docs/content/docs/en/sdks/typescript.mdx

@@ -593,14 +593,91 @@ async function executeClientSideWorkflow() {
     });
 
     console.log('Workflow result:', result);
-    
+
     // Update UI with result
-    document.getElementById('result')!.textContent = 
+    document.getElementById('result')!.textContent =
       JSON.stringify(result.output, null, 2);
   } catch (error) {
     console.error('Error:', error);
   }
 }
+```
+
+### File Upload
+
+File objects are automatically detected and converted to base64 format. Include them in your input under the field name matching your workflow's API trigger input format.
+
+The SDK converts File objects to this format:
+```typescript
+{
+  type: 'file',
+  data: 'data:mime/type;base64,base64data',
+  name: 'filename',
+  mime: 'mime/type'
+}
+```
+
+Alternatively, you can manually provide files using the URL format:
+```typescript
+{
+  type: 'url',
+  data: 'https://example.com/file.pdf',
+  name: 'file.pdf',
+  mime: 'application/pdf'
+}
+```
+
+<Tabs items={['Browser', 'Node.js']}>
+  <Tab value="Browser">
+    ```typescript
+    import { SimStudioClient } from 'simstudio-ts-sdk';
+
+    const client = new SimStudioClient({
+      apiKey: process.env.NEXT_PUBLIC_SIM_API_KEY!
+    });
+
+    // From file input
+    async function handleFileUpload(event: Event) {
+      const input = event.target as HTMLInputElement;
+      const files = Array.from(input.files || []);
+
+      // Include files under the field name from your API trigger's input format
+      const result = await client.executeWorkflow('workflow-id', {
+        input: {
+          documents: files,  // Must match your workflow's "files" field name
+          instructions: 'Analyze these documents'
+        }
+      });
+
+      console.log('Result:', result);
+    }
+    ```
+  </Tab>
+  <Tab value="Node.js">
+    ```typescript
+    import { SimStudioClient } from 'simstudio-ts-sdk';
+    import fs from 'fs';
+
+    const client = new SimStudioClient({
+      apiKey: process.env.SIM_API_KEY!
+    });
+
+    // Read file and create File object
+    const fileBuffer = fs.readFileSync('./document.pdf');
+    const file = new File([fileBuffer], 'document.pdf', {
+      type: 'application/pdf'
+    });
+
+    // Include files under the field name from your API trigger's input format
+    const result = await client.executeWorkflow('workflow-id', {
+      input: {
+        documents: [file],  // Must match your workflow's "files" field name
+        query: 'Summarize this document'
+      }
+    });
+    ```
+  </Tab>
+</Tabs>
 
 // Attach to button click
 document.getElementById('executeBtn')?.addEventListener('click', executeClientSideWorkflow);

apps/docs/content/docs/en/triggers/api.mdx

@@ -22,9 +22,17 @@ The API trigger exposes your workflow as a secure HTTP endpoint. Send JSON data
   />
 </div>
 
-Add an **Input Format** field for each parameter. Runtime output keys mirror the schema and are also available under `<api.input>`.
+Add an **Input Format** field for each parameter. Supported types:
 
-Manual runs in the editor use the `value` column so you can test without sending a request. During execution the resolver populates both `<api.userId>` and `<api.input.userId>`.
+- **string** - Text values
+- **number** - Numeric values
+- **boolean** - True/false values
+- **json** - JSON objects
+- **files** - File uploads (access via `<api.fieldName[0].url>`, `<api.fieldName[0].name>`, etc.)
+
+Runtime output keys mirror the schema and are available under `<api.input>`.
+
+Manual runs in the editor use the `value` column so you can test without sending a request. During execution the resolver populates both `<api.fieldName>` and `<api.input.fieldName>`.
 
 ## Request Example
 
@@ -123,6 +131,53 @@ data: {"blockId":"agent1-uuid","chunk":" complete"}
 | `<api.field>` | Field defined in the Input Format |
 | `<api.input>` | Entire structured request body |
 
+### File Upload Format
+
+The API accepts files in two formats:
+
+**1. Base64-encoded files** (recommended for SDKs):
+```json
+{
+  "documents": [{
+    "type": "file",
+    "data": "data:application/pdf;base64,JVBERi0xLjQK...",
+    "name": "document.pdf",
+    "mime": "application/pdf"
+  }]
+}
+```
+- Maximum file size: 20MB per file
+- Files are uploaded to cloud storage and converted to UserFile objects with all properties
+
+**2. Direct URL references**:
+```json
+{
+  "documents": [{
+    "type": "url",
+    "data": "https://example.com/document.pdf",
+    "name": "document.pdf",
+    "mime": "application/pdf"
+  }]
+}
+```
+- File is not uploaded, URL is passed through directly
+- Useful for referencing existing files
+
+### File Properties
+
+For files, access all properties:
+
+| Property | Description | Type |
+|----------|-------------|------|
+| `<api.fieldName[0].url>` | Signed download URL | string |
+| `<api.fieldName[0].name>` | Original filename | string |
+| `<api.fieldName[0].size>` | File size in bytes | number |
+| `<api.fieldName[0].type>` | MIME type | string |
+| `<api.fieldName[0].uploadedAt>` | Upload timestamp (ISO 8601) | string |
+| `<api.fieldName[0].expiresAt>` | URL expiry timestamp (ISO 8601) | string |
+
+For URL-referenced files, the same properties are available except `uploadedAt` and `expiresAt` since the file is not uploaded to our storage.
+
 If no Input Format is defined, the executor exposes the raw JSON at `<api.input>` only.
 
 <Callout type="warning">

apps/docs/content/docs/en/triggers/chat.mdx

@@ -24,13 +24,24 @@ The Chat trigger creates a conversational interface for your workflow. Deploy yo
 
 The trigger writes three fields that downstream blocks can reference:
 
-| Reference | Description |
-|-----------|-------------|
-| `<chat.input>` | Latest user message |
-| `<chat.conversationId>` | Conversation thread ID |
-| `<chat.files>` | Optional uploaded files |
-
-Files include `name`, `mimeType`, and a signed download `url`.
+| Reference | Description | Type |
+|-----------|-------------|------|
+| `<chat.input>` | Latest user message | string |
+| `<chat.conversationId>` | Conversation thread ID | string |
+| `<chat.files>` | Optional uploaded files | files array |
+
+### File Properties
+
+Access individual file properties using array indexing:
+
+| Property | Description | Type |
+|----------|-------------|------|
+| `<chat.files[0].url>` | Signed download URL | string |
+| `<chat.files[0].name>` | Original filename | string |
+| `<chat.files[0].size>` | File size in bytes | number |
+| `<chat.files[0].type>` | MIME type | string |
+| `<chat.files[0].uploadedAt>` | Upload timestamp (ISO 8601) | string |
+| `<chat.files[0].expiresAt>` | URL expiry timestamp (ISO 8601) | string |
 
 ## Usage Notes
 

apps/sim/app/api/__test-utils__/utils.ts

@@ -1116,12 +1116,20 @@ export function createMockDatabase(options: MockDatabaseOptions = {}) {
 
   const createUpdateChain = () => ({
     set: vi.fn().mockImplementation(() => ({
-      where: vi.fn().mockImplementation(() => {
-        if (updateOptions.throwError) {
-          return Promise.reject(createDbError('update', updateOptions.errorMessage))
-        }
-        return Promise.resolve(updateOptions.results)
-      }),
+      where: vi.fn().mockImplementation(() => ({
+        returning: vi.fn().mockImplementation(() => {
+          if (updateOptions.throwError) {
+            return Promise.reject(createDbError('update', updateOptions.errorMessage))
+          }
+          return Promise.resolve(updateOptions.results)
+        }),
+        then: vi.fn().mockImplementation((resolve) => {
+          if (updateOptions.throwError) {
+            return Promise.reject(createDbError('update', updateOptions.errorMessage))
+          }
+          return Promise.resolve(updateOptions.results).then(resolve)
+        }),
+      })),
     })),
   })
 

apps/sim/app/api/billing/update-cost/route.ts

@@ -3,6 +3,7 @@ import { userStats } from '@sim/db/schema'
 import { eq, sql } from 'drizzle-orm'
 import { type NextRequest, NextResponse } from 'next/server'
 import { z } from 'zod'
+import { checkAndBillOverageThreshold } from '@/lib/billing/threshold-billing'
 import { checkInternalApiKey } from '@/lib/copilot/utils'
 import { isBillingEnabled } from '@/lib/environment'
 import { createLogger } from '@/lib/logs/console/logger'
@@ -148,6 +149,9 @@ export async function POST(req: NextRequest) {
       addedTokens: totalTokens,
     })
 
+    // Check if user has hit overage threshold and bill incrementally
+    await checkAndBillOverageThreshold(userId)
+
     const duration = Date.now() - startTime
 
     logger.info(`[${requestId}] Cost update completed successfully`, {