Abstract
We present MARS (Multi-Agentic Registry Service), a federated protocol for registering, resolving, and discovering autonomous entities — agents, tools, skills, models, datasets, services, and agent instances — within the Open Agent Specification (OAS) ecosystem. MARS combines a content-anchored ledger (Sigil) with a content-addressable distributed storage layer (Weave DHT) to achieve the durability of blockchain registries with the read latency of CDNs. We describe the registry entry format, the seven-verb lifecycle, the publisher bonding mechanism, the three-hop resolution cascade, and the federation handshake. We evaluate the system at planetary scale via the MARS-S extension and demonstrate a P50 lookup latency of 12 ms across 184 federated peers.
1. Introduction
The package registries of the open web were designed for libraries — inert artifacts that, once installed, do nothing until called…
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