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OpenAI Donates Open Responses LLM API Specification to Agentic AI Foundation
Key points
- OpenAI donated Open Responses API spec to AAIF.
- Open Responses standardizes LLM API calls across providers.
- AAIF provides a neutral home for specification development.
- AWS, Databricks, Hugging Face, Nvidia, and others support the spec.
- AAIF added four projects, increasing its total to ten.
- Alibaba contributed OpenSandbox to AAIF.
- Anthropic added Agent Skills to AAIF.
- Hugging Face added OpenEnv to AAIF.
- MCP protocol is shifting focus to security, identity, attestation, audit, and payments.
- AGNTCon + MCPCon North America 2026 was held in San Jose on October 22-23.
OpenAI Donates Open Responses to AAIF
OpenAI announced the donation of its Open Responses API specification to the Agentic AI Foundation (AAIF). The AAIF, part of the Linux Foundation, launched in December 2025 and serves as a neutral home for open-source AI agent projects.
Other projects joining the AAIF include OpenSandbox, Anthropic’s Agent Skills, and HuggingFace’s OpenEv framework. These additions join existing AAIF projects like the MCP and A2A protocols, AGENTS.md (also from OpenAI), the open-source AI agent goose, agentgateway, and Agent Router.
Standardizing LLM API Calls
The core purpose of Open Responses is to provide a standardized set of API calls for developers working with large language models (LLMs) from various providers. OpenAI initially introduced the specification in January, noting that while LLM providers offer similar building blocks (messages, tool calls, function calling), their API representations differ.
Open Responses aims to standardize these primitives, eliminating the need for developers to translate between each vendor's unique API when switching between different LLM models.
The Role of a Neutral Foundation
Donating projects to a foundation like the AAIF provides a neutral environment for continued development. The Linux Foundation is a common choice for popular open-source projects seeking vendor-neutral governance, with a technical steering committee guiding technical discussions.
Vercel AI Gateway and Databricks Model Serving already implement Open Responses. The AAIF will facilitate collaborative development of the specification among developers and providers.
Industry Support
The Open Responses specification has garnered support from several industry players. These include AWS (in Bedrock), Databricks, LM Studio, Ollama, Hugging Face, Nvidia, OpenRouter, Red Hat, Vercel, and open-source projects like vLLM and OGC.
Updates
- AAIF added four projects, increasing its total to ten.
- Alibaba contributed OpenSandbox to AAIF.
- Anthropic added Agent Skills to AAIF.
- Hugging Face added OpenEnv to AAIF.
- MCP protocol is shifting focus to security, identity, attestation, audit, and payments.
- AGNTCon + MCPCon North America 2026 was held in San Jose on October 22-23.
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
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How outlets covered it
The Agentic AI Foundation (AAIF) expanded its project portfolio to ten by adding four new projects from Alibaba, OpenAI, Anthropic, and Hugging Face. Concurrently, the MCP protocol, discussed at the same event, is shifting its focus towards security, identity, attestation, audit, and payments, moving beyond new protocol features.
OpenAI donated its Open Responses API specification to the Agentic AI Foundation (AAIF), a Linux Foundation project. This specification aims to standardize core API calls for large language models across different providers, reducing the need for developers to adapt to vendor-specific APIs.