Agent ↔ agent
Open Agent Specification
A portable, framework-agnostic configuration language for defining agents, workflows and multi-agent systems.
- Status
- Active, v26.3.1 (September 2026)
- Governance
- Oracle (open source)
- Sources
- Project siteSpecification
- Latest release (checked daily)
- 26.3.1 on 2026-09-11 · PyPI pyagentspec · all releases
What to know
- It describes agents and structured flows as components that can be composed into multi-agent systems.
- Agents are written once and run on compatible runtimes through adapters.
- The Python reference library is pyagentspec; the latest release adds a FlowBuilder API.
- Versions follow a year-based scheme (26.x).
When to use it
Use it when you want to define an agent or workflow once and run it across several agent frameworks.
Related standards
MCP · Model Context ProtocolA2A · Agent2Agent ProtocolSKILL.md · Agent SkillsAGENTS.md · AGENTS.mdACP · Agent Client ProtocolPAP · Personal Agent ProtocolAG-UI · Agent User Interaction Protocol (AG-UI)A2UI · A2UIMCP Apps · MCP AppsTAP · Trusted Agent ProtocolPACT · Personal Agent Consent & Trust Protocol (PACT)ANP · Agent Network ProtocolOASF · Open Agentic Schema FrameworkWebMCP · WebMCPllms.txt · llms.txt
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Reviewed Oct 7, 2026. Spotted something out of date? Email hello@agentatlas.dev.