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nturinski merged 2 commits into from
Apr 16, 2026
Merged

Add MCP Resource trigger templates for JavaScript and TypeScript #4966

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4a724a5
Adding the Mcp Resource Templates
swapnil-nagar Apr 8, 2026
4e40489
Adding the template for VSCode
swapnil-nagar Apr 16, 2026
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42 changes: 42 additions & 0 deletions resources/backupTemplates/nodejs-4.x/templates/templates.json
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Original file line number Diff line number Diff line change
Expand Up @@ -656,5 +656,47 @@
"enabledInTryMode": true,
"userPrompt": []
}
},
{
"id": "McpResourceTrigger-Javascript-4.x",
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Copilot AI Apr 8, 2026

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Template id uses McpResourceTrigger-Javascript-4.x (lowercase s) whereas other Node v4 JavaScript templates in this file use the -JavaScript-4.x suffix (e.g., McpToolTrigger-JavaScript-4.x). Since template ids act as stable identifiers across providers/feeds, this inconsistency can lead to mismatches or duplicate templates if another source uses the canonical JavaScript id. Consider renaming the id to McpResourceTrigger-JavaScript-4.x to match the established pattern.

Suggested change
"id": "McpResourceTrigger-Javascript-4.x",
"id": "McpResourceTrigger-JavaScript-4.x",

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@nturinski nturinski Apr 10, 2026

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All the other ids are JavaScript. I think we try to normalize all of the ids so that casing shouldn't matter, but you should still be consistent.

"runtime": "2",
"files": {
"%functionName%.js": "const { app } = require('@azure/functions');\n\n// Handler returns the content for the MCP resource when a client reads it.\nasync function mcpResourceHello(_resourceContext, context) {\n context.log('MCP Resource trigger function processed a request.');\n return 'Hello from MCP Resource!';\n}\n\n// Register a file-style MCP resource clients can discover and read.\napp.mcpResource('mcpFileResource', {\n uri: 'file://mcpFileResource.txt',\n resourceName: 'mcpFileResource',\n description: 'Simple MCP Resource that returns text content.',\n mimeType: 'text/plain',\n handler: mcpResourceHello\n});"
},
"metadata": {
"defaultFunctionName": "mcpResourceTrigger",
"description": "$McpResourceTrigger_description",
"name": "MCP Resource Trigger",
"language": "JavaScript",
"triggerType": "mcpResourceTrigger",
"category": [
"$temp_category_core",
"$temp_category_dataProcessing"
],
"categoryStyle": "other",
"enabledInTryMode": false,
"userPrompt": []
}
},
{
"id": "McpResourceTrigger-TypeScript-4.x",
"runtime": "2",
"files": {
"%functionName%.ts": "import { app, InvocationContext } from \"@azure/functions\";\n\n// Handler returns the content for the MCP resource when a client reads it.\nexport async function mcpResourceHello(_resourceContext: unknown, context: InvocationContext): Promise<string> {\n context.log('MCP Resource trigger function processed a request.');\n return 'Hello from MCP Resource!';\n}\n\n// Register a file-style MCP resource clients can discover and read.\napp.mcpResource('mcpFileResource', {\n uri: 'file://mcpFileResource.txt',\n resourceName: 'mcpFileResource',\n description: 'Simple MCP Resource that returns text content.',\n mimeType: 'text/plain',\n handler: mcpResourceHello\n});"
},
"metadata": {
"defaultFunctionName": "mcpResourceTrigger",
"description": "$McpResourceTrigger_description",
"name": "MCP Resource Trigger",
"language": "TypeScript",
"triggerType": "mcpResourceTrigger",
"category": [
"$temp_category_core",
"$temp_category_dataProcessing"
],
"categoryStyle": "other",
"enabledInTryMode": false,
"userPrompt": []
}
}
]
10 changes: 5 additions & 5 deletions src/funcConfig/function.ts
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Expand Up @@ -39,15 +39,15 @@ export class ParsedFunctionJson {

// eslint-disable-next-line @typescript-eslint/no-explicit-any
public constructor(data: any) {

if (typeof data === 'object' && data !== null && (data.triggerType !== undefined)) {
this.template = <IFunctionTemplate>data;
this.data = {};
}

else if (typeof data === 'object' && data !== null && (data.bindings === undefined || data.bindings instanceof Array)) {
this.data = <IFunctionJson>data;

} else {
this.data = {};
}
Expand Down Expand Up @@ -85,10 +85,10 @@ export class ParsedFunctionJson {

public get isMcpTrigger(): boolean {
if (this.template?.triggerType) {
return /^mcptooltrigger/i.test(this.template.triggerType) || /^mcptrigger/i.test(this.template.triggerType);
return /^mcptooltrigger/i.test(this.template.triggerType) || /^mcptrigger/i.test(this.template.triggerType) || /^mcpresourcetrigger/i.test(this.template.triggerType);
}
if (this.triggerBinding && this.triggerBinding.type) {
return /^mcptooltrigger/i.test(this.triggerBinding.type) || /^mcptrigger/i.test(this.triggerBinding.type);
return /^mcptooltrigger/i.test(this.triggerBinding.type) || /^mcptrigger/i.test(this.triggerBinding.type) || /^mcpresourcetrigger/i.test(this.triggerBinding.type);
}

return false;
Expand Down
1 change: 1 addition & 0 deletions src/templates/script/getScriptVerifiedTemplateIds.ts
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Expand Up @@ -39,6 +39,7 @@ export function getScriptVerifiedTemplateIds(version: string): (string | RegExp)
'EventGridBlobTrigger',
'SqlTrigger',
'McpToolTrigger',
'McpResourceTrigger',
'MCPTrigger'
]);

Expand Down
5 changes: 3 additions & 2 deletions src/templates/script/parseScriptTemplatesV2.ts
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Expand Up @@ -121,9 +121,10 @@ export function parseScriptTemplates(rawTemplates: RawTemplateV2[], rawBindings:
}
const isHttpTrigger = !!templateV2.id?.toLowerCase().includes('httptrigger-');
const isTimerTrigger = !!templateV2.id?.toLowerCase().includes('timertrigger-');
// python and node.js use 2 different IDs for Mcp Triggers... because of course they do
// MCP trigger variants use multiple IDs across templates/providers.
const isMcpTrigger = !!templateV2.id?.toLowerCase().includes('mcptooltrigger') ||
templateV2.id?.toLowerCase().includes('mcptrigger');
templateV2.id?.toLowerCase().includes('mcptrigger') ||
templateV2.id?.toLowerCase().includes('mcpresourcetrigger');

templates.push(Object.assign(templateV2, {
wizards: parsedJobs,
Expand Down
4 changes: 2 additions & 2 deletions test/templateCount.test.ts
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Expand Up @@ -30,14 +30,14 @@ function addSuite(source: TemplateSource | undefined): void {
suite(`Template Count - ${source === undefined ? 'defaultOnExtensionActivation' : source}`, () => {
const cases: TestCase[] = [
{ language: ProjectLanguage.JavaScript, version: FuncVersion.v1, expectedCount: 8 },
{ language: ProjectLanguage.JavaScript, version: FuncVersion.v4, expectedCount: 18 },
{ language: ProjectLanguage.JavaScript, version: FuncVersion.v4, expectedCount: 18, backupExpectedCount: 19 },
{ language: ProjectLanguage.CSharp, version: FuncVersion.v1, expectedCount: 12 },
{ language: ProjectLanguage.CSharp, version: FuncVersion.v4, expectedCount: 15, projectTemplateKey: 'net6.0' },
{ language: ProjectLanguage.CSharp, version: FuncVersion.v4, expectedCount: 14, backupExpectedCount: 13, projectTemplateKey: 'net6.0-isolated' },
{ language: ProjectLanguage.CSharp, version: FuncVersion.v4, expectedCount: 14, backupExpectedCount: 13, projectTemplateKey: 'net7.0-isolated' },
{ language: ProjectLanguage.CSharp, version: FuncVersion.v4, expectedCount: 14, backupExpectedCount: 13, projectTemplateKey: 'net8.0-isolated' },
{ language: ProjectLanguage.Python, version: FuncVersion.v4, expectedCount: 15 },
{ language: ProjectLanguage.TypeScript, version: FuncVersion.v4, expectedCount: 18 },
{ language: ProjectLanguage.TypeScript, version: FuncVersion.v4, expectedCount: 18, backupExpectedCount: 19 },
{ language: ProjectLanguage.PowerShell, version: FuncVersion.v4, expectedCount: 16 },
{ language: ProjectLanguage.Ballerina, version: FuncVersion.v4, expectedCount: 5 }
];
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