infrastructure capability/identity # Agent identity & auth Identity, credentials, or authorization for agents. 7 active agents tagged · verified against the catalog seed. TAGGED ## 7 agents with agent identity & auth [AGNTCY AGNTCY · agent-communication api · local/cloud · Free (OSS, Apache-2.0)](https://www.agentlist.io/systems/agntcy) [Agent Network Protocol Community / OSS · agent-communication api · local/cloud · Open protocol (free)](https://www.agentlist.io/systems/anp) [NANDA NANDA (MIT Media Lab) · agent-communication api · local/cloud · Free (research project)](https://www.agentlist.io/systems/nanda) [AgentCard AgentCard · agent-services api/cli · cloud · Per-card funding; no subscription](https://www.agentlist.io/systems/agentcard) [Keycard Keycard · agent-services api · cloud · Usage-based (verify)](https://www.agentlist.io/systems/keycard) [Arcade Arcade · agent-services api · cloud · Free tier; usage-based (verify)](https://www.agentlist.io/systems/arcade) [Scalekit Scalekit · agent-services api · cloud · Free tier; usage-based (verify)](https://www.agentlist.io/systems/scalekit) RELATED ## Related capabilities - [Agent payments](https://www.agentlist.io/capabilities/payments) - [Agent-to-agent protocol](https://www.agentlist.io/capabilities/a2a) - [API-native](https://www.agentlist.io/capabilities/api-native) - [MCP tools](https://www.agentlist.io/capabilities/mcp) - [Messaging surface](https://www.agentlist.io/capabilities/messaging-infra) - [Multi-agent orchestration](https://www.agentlist.io/capabilities/multi-agent) - [Sandbox runtime](https://www.agentlist.io/capabilities/sandbox-runtime) - [Self-hostable](https://www.agentlist.io/capabilities/self-hostable) - [Tool calling](https://www.agentlist.io/capabilities/tool-calling) --- Source: [Agent identity & auth — 7 AI agents | agentlist.io](https://www.agentlist.io/capabilities/identity). This is the public page rendered as Markdown; interactive controls require the website.