This release adds 3 notable features for engineering teams evaluating rollout.
✓ No known CVEs patched in this version
Topics
+10 more
Summary
AI summaryCSL-Core now includes a built-in Model Context Protocol (MCP) server with policy verification, simulation, explanation, and scaffolding tools.
Full changelog
CSL-Core now ships a built-in Model Context Protocol server. Write, verify, and enforce AI safety policies directly from your AI assistant.
New Features
- MCP Server with 4 tools:
verify_policy— Z3 formal verification via MCPsimulate_policy— Runtime enforcement against JSON inputsexplain_policy— Human-readable policy summaryscaffold_policy— Generate CSL templates from plain English
- 5 bundled example policies as MCP resources (hello_world, age_verification, banking_guard, agent_tool_guard, dao_treasury_guard)
- CSL syntax reference prompt for AI assistants
- Optional dependency:
pip install "csl-core[mcp]"
Setup (Claude Desktop / Cursor)
{
"mcpServers": {
"csl-core": {
"command": "uv",
"args": ["run", "--with", "csl-core[mcp]", "csl-core-mcp"]
}
}
}
Upgrade
pip install csl-core --upgrade --pre
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About Chimera-Protocol/csl-core
Deterministic AI safety policy engine with Z3 formal verification. Write, verify, and enforce machine-verifiable constraints for AI agents via MCP.
Related context
Beta — feedback welcome: [email protected]