Pigeon vs Shelfprotocol
Both are listed under Developer Tools. Here is how they differ on the facts we track.
Pigeon
github.com
Shelfprotocol
github.com
| Feature | Pigeon | Shelfprotocol |
|---|---|---|
| What it is | Delegated authority for AI agents. | robots.txt for commerce — the open directory AI agents query before they buy - Signal-All/shelfprotocol |
| Pricing | unknown | paid |
| Categories | Developer Tools, AI Agents | Developer Tools, AI Agents |
| Platforms | CLI | CLI |
| Upvotes | 0 | 0 |
| Last verified | 2026-09-10 | 2026-09-10 |