Snippets

Complete code, not decorative ellipses

Every snippet is a whole file or unit with the imports, license header, and a recorded check.

javascript

Browser W3C tracing with Application Insights

A complete browser module that starts a W3C trace and attaches traceparent only to your own API.

Syntax checked with Node.js after inspecting Application Insights Web 3.4.4 telemetry item typings; verified only scrubbed API dependency telemetry is kept.

python

Deterministic capabilities with a strict request contract

A complete Python module that validates model output as data, then runs approved normal code for calculator, email syntax, and mock support-ticket requests.

Compiled with python3 -m py_compile and run with a local self-test in Python 3.14.

python

Host-owned routing for direct and MCP execution

A complete Python unit that maps validated domain intent to approved direct functions or approved MCP tool names.

Compiled with python3 -m py_compile and run with fake MCP results plus mcp 2.0.0 over stdio in Python 3.14.

csharp

Ingest live audio over WebSocket

A complete ASP.NET Core endpoint that authenticates a native helper WebSocket before accepting binary PCM frames.

Compiled on .NET 10 with warnings as errors and run through the non-WebSocket bad-request, missing-subprotocol unauthorized, valid-subprotocol upgrade, failed-upgrade gate release, and oversized-message close paths

csharp

Convert capture buffers to 16 kHz PCM

A complete C# audio converter that turns native capture buffers into 16 kHz, mono, signed 16-bit PCM frames for live speech recognition.

Compiled on .NET 10 with warnings as errors and run with generated stereo float audio split across many small buffers, verifying no boundary-sized dropout.

csharp

Host a loopback helper API

A complete ASP.NET Core loopback host and router for a native helper's pairing and capture contract.

Compiled on .NET 10 with warnings as errors, run against the health route, and verified StartAsync returns before StopAsync stops the host

python

Thin MCP server adapters over deterministic Python tools

A complete MCP server module that exposes approved deterministic capabilities without moving business logic into the MCP layer.

Compiled with python3 -m py_compile and imported with mcp 2.0.0 in Python 3.14, verifying the MCPServer tool registry.

csharp

Call Azure OpenAI for a meeting summary

A complete C# provider that sends a transcript to Azure OpenAI chat completions and returns structured meeting-summary text.

Compiled on .NET 10 with warnings as errors and run against missing configuration, invalid endpoint, and empty-provider-response paths without a network call

python

Local Ollama intent extractor with schema output

A complete Python unit that asks local Ollama for one JSON intent object, then validates the result before execution can happen.

Compiled with python3 -m py_compile and run with a mocked Ollama response in Python 3.14.

csharp

OpenTelemetry and Azure Monitor setup for an agent API

A complete, runnable ASP.NET Core 10 program: W3C tracing, the agent's spans, trusted baggage, whole-trace sampling, and the trace ID returned to the caller.

Compiled with warnings as errors and run: the API continued caller trace context, cleared caller baggage before outbound HTTP, generated the conversation ID server-side, and configured the service resource after Azure Monitor.

swift

Wrap NSTextView for a plain-text SwiftUI editor

A complete SwiftUI wrapper around AppKit NSTextView with plain-text enforcement, word wrap, selection callbacks, and first-responder focus.

Type-checked and run with swiftc 6.4 on macOS 26, including clamped update-time selections, focus, and selection-change callbacks.

powershell

Create a planning config template

A complete PowerShell script that writes a sanitized JSON planning config with placeholder scope, labels, and app split rules.

Parsed with PowerShell 7.6.2 and ran locally, producing JSON that ConvertFrom-Json could read

swift

Persist tab sessions without storing document text

A complete Swift session store that remembers tab metadata and selected tab while keeping document contents out of the session file.

Type-checked and run with swift 6.4 on macOS 26, including damaged JSON decode, negative selection clamping, and stale selected-tab repair.

powershell

Retry a rate-limited planning operation

A complete PowerShell script that retries a synthetic operation when it returns retry-after guidance.

Parsed with PowerShell 7.6.2 and ran locally with retry-after 1 and 0, negative parameter rejection, MaxRetries 0 = one attempt, and MaxRetries 1 = one retry.

swift

Write local recovery copies without autosaving over user files

A complete Swift recovery-copy service that writes atomic text and metadata files into a user-selected folder and cleans them up after save or discard.

Type-checked and run with swift 6.4 on macOS 26, including /tmp and /private/tmp folder aliases, no-follow reads, symlink rejection, cleanup, and tamper refusal.

powershell

Roll a synthetic plan forward

A complete PowerShell script that merges prior finalized actuals, refreshed actuals, and forecast percentages by month key.

Parsed with PowerShell 7.6.2 and ran locally, preserving a synthetic analyst override while refreshing current actuals

powershell

Split synthetic subscription cost by resource group

A complete PowerShell script that matches synthetic resource-group cost rows to app slices and reconciles the remainder.

Parsed with PowerShell 7.6.2 and ran locally against synthetic cost rows, verifying overlapping slice rules do not double count and slice plus remainder totals reconcile

csharp

Copy only trusted baggage onto spans

A complete OpenTelemetry processor that tags child spans with your own conversation ID and ignores whatever the caller sent.

Compiled on .NET 10 with warnings as errors

swift

Open and save UTF-8 plain-text files safely

A complete Swift file service for .txt and .md documents with strict UTF-8 decoding, atomic saves, and a 10 MB warning.

Type-checked and run with swift 6.4 on macOS 26, including extensionless URL rejection and Save As filename traversal rejection.

kusto

Walk one trace hop by hop in KQL

A complete query that replays one request across services with millisecond offsets, using privacy-safe hop markers.

Parsed with the Kusto SDK parser; marker extraction projects only allowlisted marker tokens, never source messages or dependency names.