mcp
GitHub MCP Server 2.0.0 hides output schemas from older clients
GitHub MCP Server 2.0.0 advertises outputSchema and structuredContent only to supported MCP 2026-07-28 clients; older clients keep text.
What does Claude Code 2.1.292 change about subagent effort and local MCP?
Claude Code 2.1.292 adds Agent-tool effort levels and defaults local stdio MCP negotiation to protocol 2026-07-28, with a legacy opt-out.
WebMCP reaches the browser agent. A remote MCP reaches the CLI.
WebMCP gives browser agents client-side tools in Chrome 149, while a remote Streamable HTTP MCP server gives CLI agents direct search without scraping.
What does echoVic/orca-agent v0.5.6 add for MCP?
echoVic/orca-agent v0.5.6 adds CLI MCP management, streamable HTTP, parallel startup, OAuth, and read-only tool approval.
Why a remote MCP server answers 405 after the 2026-07-28 revision
A legacy SSE fallback sends GET to a POST-only 2026-07-28 MCP endpoint, so its 405 can hide an earlier connection failure.
MCP, A2A, and the two protocols called ACP, explained
MCP connects agents to tools, A2A connects agents to agents, and ACP names either Zed's editor protocol or IBM's archived protocol.
Pi 1.0.4 lets you pick MCP tools with a pattern
Pi 1.0.4 lets --tools and --exclude-tools match MCP tools with *, adds --no-mcp, and keeps MCP tools unless a pattern starts with mcp__.
MCP TypeScript SDK 2.3.1 checks token audience on the legacy server
MCP TypeScript SDK 2.3.1 adds expectedResource to server-legacy, rejecting mismatched or missing audiences with HTTP 401 invalid_token.
The MCP Registry: what it is, who reads it, and how to list a server
The MCP Registry stores MCP server metadata, while aggregators read it and publishers add ownership proofs, server.json, and a public package or endpoint.
Codex CLI 0.160.1 preserves Windows environment variables for remote MCP
Codex CLI 0.160.1 preserves SYSTEMROOT, TEMP, and TMP when Unix hosts spawn remote stdio MCP servers on Windows executors with custom environments.
Cursor SDK can steer an agent mid-run
Cursor SDK's run.steer() delivers input to a live local TypeScript turn, moving a foreground subagent into the background if needed.
Who can connect custom MCP servers in ChatGPT without developer mode?
Eligible ChatGPT users can add custom MCP servers from Plugins without Developer mode; full write-capable MCP access still depends on plan and workspace policy.