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fork

Model Context Protocol leads with Score 23. Cost is free. The licence is MIT. Agent and composability metrics are insufficient evidence.

Browse filters

Open protocol so tools, data, and prompts plug into many harnesses. The connect slice Leyline ranks, not a marketplace.

Function

Connect

speak a protocol (MCP, API, CLI)

Connect Browse Connect

Function

Tool-call

invoke an external action

Tool-call Browse Tool-call

Function

Route

send work to the right tool

Route Browse Route

Function

Auth

prove identity or permission

Auth Browse Auth

Interface

mcp

Model Context Protocol server

Interface

http

HTTP API

Matched protocol

GitHub

Observed

Agent use

No signal yet

Reputation

Human and agent evidence, together.

Score factors

Model Context Protocol · 23

Score v2 uses observed signals only. Missing factors read No signal yet.

  • GitHub health5.4 pts
  • Agent useNo signal yet
  • Human notes1.2 pts
  • ComposabilityNo signal yet
  • Checklist10.0 pts
  • Evidence quality6.5 pts
  • BenchmarksNo signal yet
Full Score explanation
Observed signals only

Evidence

Leyline ranks components. It does not proxy inference or resell tokens.

Human evidence

Observed stars, notes, maintainer trust, and public sources. Missing signals read No signal yet.

Agent evidence

Observed installs, success, resolve wins, and benches. Unobserved usage is never guessed or zeroed.