I counted the MCP tools in my Cursor setup: 882,846 tokens of tool definitions, re-sent every turn882,846 That's not my download count. Not my traffic either. It's the full text of the 209 MCP tool definitions I have wired into Cline, Claude Desktop, Cursor, and Hermes Agent. Added up, token by toOct 13 · 3 min readmcptoon.hashnode.dev
Claude Code / Codex / Cursor / Hermes Agent: zero config, one shared MCP config and skill setOne environment variable, four clients, one silent miss Last week I added an environment variable to one of my MCP servers — API_BASE, pointed at an internal host. Added it in Claude Code. Worked. AddOct 6 · 5 min readmcptoon.hashnode.dev
Stop Hand-Crafting MCP JSON for Cursor and Claude Code: Sync Once, Cut 98% Discovery TokensLast Friday, while cross-debugging a payment refactoring branch, I had Cursor open on my left monitor for frontend reviews and Claude Code running in my terminal on the right. To let both AI assistant1信Oct 4 · 5 min readmcptoon.hashnode.dev
The Name Index Pattern: Cutting Agent Context 99.2% on Tools and Skills AlikeThere's a pattern I keep reaching for whenever an agent's context gets crowded, and it took me too long to notice it applies in two places at once. The pattern is small: keep names resident, fetch bod1AOct 1 · 4 min readmcptoon.hashnode.dev
The 4,250-Token Handshake: What 24 MCP Tools Charge Before Your Agent Answers a Single QuestionIf you run an AI agent wired to MCP servers, there's a handshake happening before every single reply — and you've never seen the invoice. This post is that invoice, itemized, plus the exact engineerinSep 10 · 4 min readmcptoon.hashnode.dev
