Add Protocol Builder tab for session type protocol design#1224
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chrisbartoloburlo wants to merge 2 commits intomodelcontextprotocol:mainfrom
Open
Add Protocol Builder tab for session type protocol design#1224chrisbartoloburlo wants to merge 2 commits intomodelcontextprotocol:mainfrom
chrisbartoloburlo wants to merge 2 commits intomodelcontextprotocol:mainfrom
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Adds a new "Protocol Builder" tab to the MCP Inspector that lets users visually compose interaction protocols from discovered MCP tools using session type theory. Features: - Discovers tools via tools/list and presents them as clickable blocks - Supports send (!), receive (?), internal/external choice, and recursion - Live DSL output with syntax highlighting - State machine visualization - Generates Python integration code using llmcontract - Export/download protocol as Python file This enables runtime protocol monitoring for LLM agent interactions, ensuring tools are called in the correct order per a defined contract. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…M preview
- Add convert-to-choice buttons on PairCard: convert ! to !{} or ? to ?{}
inline, keeping the partner as a standalone step
- ? to ?{} auto-populates branches with {sendLabel}Result and {sendLabel}Error
- ! to !{} populates branches with available MCP tool names
- Rewrite parseToFSM to correctly model choices as branching from same state
- Update StateMachinePreview to show branching visually with grouped transitions
- Fix recursion (rec X.) not being terminal — only loop-back refs terminate
- Support hyphens in DSL identifiers for MCP tool name compatibility
- Fix nested convert-to-choice crash (wrong variable name in recursive call)
- Fix package name: llmcontract -> llmsessioncontract
- Add example agent using MCP server-everything tools (echo, get-sum)
- Register protocol-builder tab in all validTabs arrays
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
Features
llmcontractmonitor + middleware integration codeTest plan
rec X. ...X...syntaxnpm run build-client)🤖 Generated with Claude Code