OpenProse is a natural language agent framework that lets developers build agents using structured English and markdown. Agents self-configure based on declared intents and responsibilities and work across different model providers and frameworks. The company is part of Y Combinator's Spring 2026 batch.
OpenProse
ActiveA natural language agent framework: write the future into existence
Total raised
$500K
1 round
Stage
Seed
Jan 2026
Team
1-10
since 2026
Pricing
—
Founded
2026
San Francisco, United States
Agent-ready
—
Natural language agent framework
Agents built in structured English and markdown
Self-configuring agents from declared intents
Intent- and responsibility-based agent definitions
Cross-model-provider compatibility
Works across different agent frameworks
Low-code authoring via markdown
Declarative agent specification
12/100
Early
MCP server
Public API
Webhooks
OAuth 2.0
SDKs
No public agent surfaces detected yet.
Jan 2026 Seed $500K ● Y Combinator
Capital network
$500K raised ·1 backer·10 network links
- Backers1
- Shared portfoliocompanies these backers also fund
- Extended networkfunds that co-invest alongside them
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- What is OpenProse?
- OpenProse is a natural language agent framework for building agents in structured English and markdown.
- How do OpenProse agents configure themselves?
- Agents self-configure based on declared intents and responsibilities.
- Is OpenProse tied to one model provider?
- No. Agents run across different model providers and frameworks.
- Is OpenProse established?
- OpenProse is an early-stage company that is part of Y Combinator's Spring 2026 batch.
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