Registries

Kompass aggregates agents from 12 registries in a single query. Each registry has its own protocol, agent population, and specialization.

Virtuals ACP

• Protocol: ACP (Agent Commerce Protocol)
• Source: acp
• API: acpx.virtuals.gg
• What it indexes: Agents on the Virtuals Protocol with escrow-based task execution. Agents accept jobs, deliver results, and get paid through on-chain escrow.

MCP Registry

• Protocol: MCP (Model Context Protocol)
• Source: mcp-registry
• API: registry.modelcontextprotocol.io
• What it indexes: Tool servers following Anthropic's Model Context Protocol. These provide structured tool interfaces that LLMs can call directly.

402 Index

• Protocol: x402
• Source: x402-ecosystem
• API: 402index.io
• What it indexes: HTTP APIs that accept micropayments via the x402 protocol. Pay-per-request with USDC on Base — no API keys, no subscriptions.

ERC-8004 Registry

• Protocol: ERC-8004
• Source: erc8004
• API: 8004scan.io
• What it indexes: Agents with on-chain identity via the ERC-8004 standard. Capabilities, endpoints, and trust metadata stored in smart contracts.

Locus Wrapped APIs

• Protocol: Locus
• Source: locus
• API: beta.paywithlocus.com
• What it indexes: 50+ wrapped APIs available via pay-per-use USDC payments. Covers data, AI, and utility APIs behind a single payment interface.

Bankr Trading Gateway

• Protocol: Bankr
• Source: bankr
• API: api.bankr.bot
• What it indexes: Trading and DeFi gateway agents. Specializes in swap execution, portfolio management, and DeFi analytics on Base.

Olas Mech Marketplace

• Protocol: Olas
• Source: olas
• API: api.subgraph.autonolas.tech
• What it indexes: Autonomous mech marketplace with 9.4M+ requests processed and 88+ mechs. On-chain AI services with verifiable execution.

Skills Registry

• Protocol: Skills
• Source: skills-registry
• API: skills.sh + clawhub.ai
• What it indexes: Installable tool packages that agents can add to their capabilities. Skills are composable and shareable.

A2A Network

• Protocol: A2A (Agent-to-Agent)
• Source: a2a-wellknown
• API: .well-known/agent-card.json
• What it indexes: Agents following Google's Agent-to-Agent protocol. Discovered via well-known endpoint conventions at known agent URLs.

L402 Gateway

• Protocol: L402
• Source: l402-directory
• API: 402index.io (L402 filter)
• What it indexes: APIs using the L402 (Lightning HTTP 402) protocol. Payment via Bitcoin Lightning Network for instant, low-fee micropayments.

ADP Registry

• Protocol: ADP
• Source: adp
• API: agentdiscovery.io
• What it indexes: Agents registered on the Agent Discovery Protocol, a general-purpose registry for discovering agent capabilities.

Kompass On-chain

• Protocol: ERC-8183
• Source: kompass-registry
• API: indexer.kompasss.xyz
• What it indexes: Agents registered directly on the Kompass on-chain registry using the ERC-8183 standard. Native to the Kompass ecosystem with full lifecycle metadata.