●TEACHERS — Anthropic launches Claude for Teachers, giving verified US K-12 educators free premium access, teaching skills, and curriculum links aligned to standards in all 50 states●ADMIN — The Admin API is now in beta for every Claude Enterprise organization: member and invite calls need no beta header, while group and custom-role calls do●M365 — The Microsoft 365 connector gains write tools — draft, send, and organize email, manage calendar events and mailbox settings, and create or update files in OneDrive and SharePoint●MCP — Fixed servers from --mcp-config or .mcp.json ignoring a per-server request_timeout_ms, which left long-running tool calls timing out at the 60s default in fresh sessions●SUBAGENT — A new --forward-subagent-text flag and CLAUDE_CODE_FORWARD_SUBAGENT_TEXT variable include subagent text and thinking in stream-json output●DEADLINE — Opus 4.7 fast mode is removed on July 24, seven days out. speed: "fast" will error, so confirm your move to Opus 4.8●TEACHERS — Anthropic launches Claude for Teachers, giving verified US K-12 educators free premium access, teaching skills, and curriculum links aligned to standards in all 50 states●ADMIN — The Admin API is now in beta for every Claude Enterprise organization: member and invite calls need no beta header, while group and custom-role calls do●M365 — The Microsoft 365 connector gains write tools — draft, send, and organize email, manage calendar events and mailbox settings, and create or update files in OneDrive and SharePoint●MCP — Fixed servers from --mcp-config or .mcp.json ignoring a per-server request_timeout_ms, which left long-running tool calls timing out at the 60s default in fresh sessions●SUBAGENT — A new --forward-subagent-text flag and CLAUDE_CODE_FORWARD_SUBAGENT_TEXT variable include subagent text and thinking in stream-json output●DEADLINE — Opus 4.7 fast mode is removed on July 24, seven days out. speed: "fast" will error, so confirm your move to Opus 4.8

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cowork¹ plugin¹ skill¹ mcp¹ automation¹

◈ Cowork/2026-07-17Advanced

It Worked on My Machine, but Nobody Could Trigger It — Four Assumptions I Stripped Out of a Cowork Plugin

I bundled four working automation skills into a plugin and shared it. Only one of them ever fired. Here is how I measured skill trigger rate, and the four assumptions — vocabulary, paths, connections, and naming — I had to strip out before it was portable.