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Tag: mcp

64 posts · Page 1 of 7

2026-08-20 mcp agent-skills microsoft-agent-framework

How to Serve Agent Skills from an MCP Server in .NET with UseMcpSkills

Stop shipping SKILL.md folders inside every agent deployment. Serve them from an MCP server and pull them with UseMcpSkills on Microsoft.Agents.AI.Mcp 1.18. Includes the exact skill://index.json shape, a working C# server, the wire trace, and the SEP-2640 drift that will bite you.

2026-08-18 mcp claude-code github-copilot

How to Centrally Control Which MCP Servers Your Team Can Run

Claude Code and GitHub Copilot both ship allowedMcpServers and deniedMcpServers, but the matchers behave differently. serverName is a fallback that a single serverCommand entry silently disables, deny is a union while allow is not, and an invalid allowlist locks everything out.

2026-08-17 agent-skills mcp claude-code

How to Package Skills and an MCP Server as One Agent Plugin

Agent Plugins 1.0 says plugin.json at the root and mcp.json beside it. Claude Code 2.1.x wants .claude-plugin/plugin.json and .mcp.json. Here is what each client actually loads, tested against a real plugin, and the dual-layout directory that satisfies both.

2026-08-16 mcp ai-agents streamable-http

How to Route MCP Traffic Through a Gateway With the Mcp-Method and Mcp-Name Headers

MCP 2026-07-28 mirrors the JSON-RPC method and target name into HTTP headers so a gateway can route, throttle, and audit without parsing the body. Here is a working gateway, plus the header-body agreement rule that will bite you.

2026-08-15 mcp ai-agents llm

Safe File-Write Tools for an Agent: Preview, Confirm, Apply

A write tool that asks before it writes needs three things the MCP SDK does not give you: an approval bound to the exact diff, a precondition on the file it previewed, and an integrity-protected requestState. Verified end to end on @modelcontextprotocol/server 2.0.0 against protocol revision 2026-07-28, including the argument-swap that gets past a naive confirm.

2026-08-14 mcp ai-agents llm

MCP Server Design for a Large Internal API Surface

Mapping 200 internal REST endpoints to 200 MCP tools puts 200 KB of JSON schema in front of every request. The 2026-07-28 spec also made the usual escape hatch illegal: tools/list MUST NOT vary per-connection, so per-session dynamic registration is gone. Here are the three levers that still work, with measured wire sizes and verified code on @modelcontextprotocol/server 2.0.0.

2026-08-11 migration mcp ai-agents

Migrate Off the Archived MCP Reference Servers (GitHub, Postgres, Slack)

The GitHub, Postgres, and Slack MCP servers from modelcontextprotocol/servers were archived in 2025 and their npm packages are deprecated. They pin SDK 1.0.1, which cannot negotiate past protocol 2024-11-05. Here is the audit script, the current replacement for each, and the two pointers in the archive README that are themselves stale.

2026-08-09 github-copilot mcp ai-agents

Copilot MCP Allowlists Land in Enterprise Managed Settings

GitHub's August 6, 2026 changelog adds allowedMcpServers and deniedMcpServers to copilot/managed-settings.json. URL and argv matchers, deny-wins precedence, and a fail-closed default the older name-based registry never had.

2026-08-03 agent-framework github-copilot ai-agents

Agent Framework's Copilot Provider Turns the Copilot CLI Into a Plain AIAgent

Microsoft.Agents.AI.GitHub.Copilot 1.16.0 shipped on July 30, 2026. The Copilot CLI runtime now sits behind the ordinary AIAgent abstraction, permissions are deny-by-default, and Squad plugs a whole agent team in as one AIAgent.

2026-07-31 github-copilot agent-skills mcp

Copilot Code Review Now Reads Your .github/skills Folder

Agent skills and MCP servers in GitHub Copilot code review went GA on 2026-07-29. Here is where the files live, why skills load from the head branch, and why every MCP tool call in a review is read-only.