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Tag: ai-agents

213 posts · Page 1 of 22

2026-10-02 agent-framework dotnet ai-agents

Agent Framework 1.23: Function Middleware Can Finally Swap the Tool It Is Calling

Microsoft Agent Framework .NET 1.23.0 honors assignments to FunctionInvocationContext.Function, so middleware can redirect a tool call to a different AIFunction. A new WrapWithPendingMiddleware helper keeps the rest of the chain in the loop.

2026-10-02 agent-skills ai-agents claude-code

What Is an Agent Skill, and How Is It Different from a System Prompt?

An agent skill is a folder with a SKILL.md file that the agent loads on demand: only its name and description sit in the system prompt, the instructions arrive when a task matches, and bundled scripts run without ever entering context. Here is how that differs from a system prompt in cost, scope, invocation and trust, with the exact limits from the Agent Skills spec and Claude Code.

2026-09-30 mcp ai-agents llm

What Is the Model Context Protocol, and Why Is Every IDE Shipping It?

MCP is a JSON-RPC protocol that lets any AI host call tools, read resources and use prompts from any server, the way LSP did for language support. Here is how it works on the wire under revision 2026-07-28, captured from a real server, and why VS Code, Visual Studio, JetBrains, Xcode, Zed and Cursor all converged on it.

2026-09-29 blazor dotnet-11 aspnet-core

Blazor Gets Agentic UI Components in .NET 11 RC1: ChatPage, UIAgent, and Tool Approvals

Microsoft.AspNetCore.Components.AI is an experimental Blazor package in .NET 11 RC1 that turns any IChatClient into a streaming chat UI with tool approvals, typed tool rendering, and shared state over AG-UI.

2026-09-29 ai-agents claude-code playwright

Self-Healing E2E Tests When a Coding Agent Renames Your Selectors

A coding agent refactors a component, renames a data-testid, and your Playwright suite goes red. Here is a three-layer setup, verified on Playwright 1.63.0 and Claude Code 2.1.197: locators that survive, a PreToolUse hook that blocks the rename, and a CI guard that lets the Playwright healer agent fix locators but never rewrite an assertion.

2026-09-28 llm ai-agents mcp

How to Measure an Agent's Fixed Token Overhead Before the First User Token

Every agent request pays for its system prompt, the provider's hidden tool-use preamble, and every tool schema before the user says anything. How to measure that fixed cost with differential count_tokens calls on the Anthropic API, the input_tokens endpoint on OpenAI, an MCP listTools probe, and /context in Claude Code, anchored to claude-opus-5-5, claude-sonnet-5, and @modelcontextprotocol/client 2.1.0.

2026-09-27 ag-ui dotnet ai-agents

AG-UI .NET SDK 1.0: AGUI.Server and AGUI.Client Move the Protocol Out of Agent Framework

The AG-UI protocol now has a standalone .NET SDK: AGUI.Server 1.0.0 streams any IChatClient as AG-UI events over SSE, and AGUIChatClient consumes an AG-UI endpoint as an IChatClient, down to .NET Framework 4.7.2. Agent Framework users get renamed APIs.

2026-09-27 ai-agents claude-code security

How to Run a Coding Agent in a Disposable VM or Container Instead of on Your Laptop

Dev containers, Docker Sandboxes microVMs, Lima VMs, and hosted cloud sandboxes all move Claude Code, Codex, or Copilot CLI off your host. What each one actually isolates, the exact commands to make it throwaway, and the two things none of them protect: your writable workspace and your git hooks.

2026-09-25 ai-agents claude-code mcp

How to Keep API Keys Out of a Coding Agent's Context With a Credential Gateway

Scoping a token does not stop a prompt-injected agent from leaking it. Moving the token out of the agent's process does. Three working setups: a 50-line gateway any agent can call, Claude Code 2.1.199+ sandbox masking with injectHosts, and Claude Managed Agents vaults, plus the measured leak that host-level injection still allows.

2026-09-24 migration cursor ai-agents

Migrate a Cursor Cloud Agent Workflow off GitHub to Cursor Origin (Early Beta, September 2026)

Move a repo, its Cursor cloud agents, automations, Bugbot, and CI from GitHub to Cursor Origin without a flag day: mirror first, rewire agents and CI while GitHub is still the source of truth, then cut over with Detach from GitHub or the reversible inbound_to_outbound mirror transition. Covers what breaks, the Origin CLI and API calls, a ref-parity check, and the rollback path.