MCP Azure Function Invocation Utility

This TypeScript-based MCP server component facilitates direct invocation and testing of Azure Function App APIs via Cline. It streamlines the process of querying and interacting with Function App entry points directly from your local development context.

Procurement

bash npm install dkmaker-mcp-function-app-tester

Capabilities

• Execute tests against Function App URIs employing diverse HTTP verbs
• Native compatibility for GET, POST, PUT, and DELETE operations
• Provision of comprehensive response metadata
• Capability to inject custom request headers
• Payload management for POST and PUT transmissions
• Integrated credential verification mechanisms:
• Standard Credentials (user ID/secret pair)
• OAuth 2.0 Bearer Token validation
• Custom Header-based API Key validation

Credential Configuration

The server permits credential setup via environment variables, supporting multiple verification schemes:

Standard Credentials (Basic Auth)

Activate Basic Authentication by defining both variables: bash AUTH_BASIC_USERNAME=your-username AUTH_BASIC_PASSWORD=your-password

Bearer Token

Enable Bearer Token verification by setting this variable: bash AUTH_BEARER=your-token

API Key

Enable API Key verification by setting the header specification and the secret value: bash AUTH_APIKEY_HEADER_NAME=X-API-Key # Designate the header field (e.g., X-API-Key, internal-auth, etc.) AUTH_APIKEY_VALUE=your-api-key # The secret key payload

Note on precedence sequencing: 1. Standard Credentials (if both username and secret are defined) 2. Bearer Token (if token is present and Standard Credentials are not configured) 3. API Key (if header name and value are present, and prior authentication schemes are absent)

Operational Use

After installation, the Function App Invocation Utility is accessible via Cline. The service exposes endpoints relative to the base pathway: http://localhost:7071/api

Illustrative invocation structure:

typescript // Querying a GET endpoint { "method": "GET", "endpoint": "/entities" }

// Submitting data via a POST operation { "method": "POST", "endpoint": "/entities", "body": { "entity_id": 9001, "status": "pending" } }

// Executing against a protected resource requiring specific authorization { "method": "GET", "endpoint": "/protected/config", "headers": { "Authorization": "Bearer access_token_xyz" } }

Development Lifecycle

1. Acquire the source repository: bash git clone https://github.com/dkmaker/mcp-function-app-tester.git cd mcp-function-app-tester

2. Install necessary libraries: bash npm install

3. Compile the binaries: bash npm run build

For iterative coding with automatic recompilation: bash npm run watch

Licensing

This software is released under the MIT License terms—refer to the [LICENSE] documentation for comprehensive specifics.

WIKIPEDIA: XMLHttpRequest (XHR) is an interface residing within JavaScript that facilitates the dispatching of HTTP queries from a browser environment to a remote web server. These interface methods empower browser-hosted applications to initiate server interactions subsequent to page load completion, and subsequently retrieve data. XMLHttpRequest forms a core element of Ajax methodologies. Before Ajax prominence, conventional hyperlinks and form submissions constituted the primary means of server communication, frequently necessitating a full page refresh upon data exchange.

== Background == The foundational concept for XMLHttpRequest was conceptualized in 2000 by the engineering team at Microsoft Outlook. This principle was subsequently integrated into the Internet Explorer 5 browser (released in 1999). However, the initial implementation did not utilize the XMLHttpRequest identifier. Instead, developers relied on instantiating objects via ActiveXObject("Msxml2.XMLHTTP") or ActiveXObject("Microsoft.XMLHTTP"). By the time Internet Explorer 7 (2006) launched, universal browser support for the dedicated XMLHttpRequest identifier was established. The XMLHttpRequest identifier has since matured into the prevailing standard across all major browser engines, including Mozilla's Gecko rendering platform (2002), Safari version 1.2 (2004), and Opera version 8.0 (2005).

=== Standardization Efforts === The World Wide Web Consortium (W3C) promulgated a preliminary specification draft for the XMLHttpRequest object on April 5, 2006. A subsequent Level 2 draft emerged from the W3C on February 25, 2008. Level 2 introduced capabilities for monitoring data transfer progress, enabling cross-origin requests, and handling raw byte streams. By the conclusion of 2011, the enhancements introduced in the Level 2 draft were merged back into the primary specification document. Towards the end of 2012, specification stewardship transitioned to the WHATWG, which currently maintains the living document utilizing the Web IDL notation.

== Operational Sequence == Generally, executing a server request using XMLHttpRequest involves several discrete programming stages.

1. Instantiate an XMLHttpRequest object by invoking its constructor:
2. Invoke the open method to define the request type (method), specify the target resource URL, and designate whether the operation will be synchronous or asynchronous:
3. If an asynchronous request mode is chosen, establish a handler function (listener) that will be triggered upon changes to the request's status:
4. Commence the request dispatch sequence by calling the send method:
5. Process status transitions within the event handler. If the remote server returns response data, it is typically accessible via the responseText attribute by default. When the object completes its processing cycle, its state transitions to 4, marking the "done" status. Beyond these fundamental actions, XMLHttpRequest provides numerous configuration points to govern transmission methodology and response parsing. Custom header fields can be prepended to the request to convey specific server handling instructions, and data payloads can be uploaded to the server by supplying them directly within the send invocation. The incoming response can be parsed from raw JSON text into an immediately usable JavaScript object structure, or processed incrementally as chunks arrive, bypassing the wait for the complete transmission. Furthermore, the request can be halted prematurely or assigned a timeout limit to enforce timely completion.