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#748cd3c0
Topic
AGENTS & TOOLS
Source
Hacker News · MCP Server
Published
2026-03-09 05:18:46
Importance
★ 5/10 — radar 50
`mcp2cli`: turn MCP and `OpenAPI` tools into on-demand CLI calls
FIG-7481:1

`mcp2cli`: turn MCP and `OpenAPI` tools into on-demand CLI calls

Instead of injecting full tool schemas every turn, it exposes tools through shell commands on demand. If your agent uses lots of tools, this is worth testing now.

[ KEY POINTS ]
  1. --list costs about 16 tokens per tool and --help about 120 once, versus keeping full MCP schemas in context every turn.
  2. The posted benchmark claims 96% savings for 30 tools over 15 turns and 99% for 120 tools over 25 turns; bigger toolboxes benefit more.
  3. It wraps both MCP servers and OpenAPI specs at runtime with no codegen or rebuild, which keeps changing APIs easier to operationalize.
  4. It also ships as an installable skill for Claude Code, Cursor, and Codex, so adoption cost is low if you already rely on shell-based agents.
Originalgithub.com/knowsuchagency/mcp2cliRead original →

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