feat(mcp): native MCP server + Codex assistant support#24
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qasim-nylas wants to merge 14 commits intomainfrom
Open
feat(mcp): native MCP server + Codex assistant support#24qasim-nylas wants to merge 14 commits intomainfrom
qasim-nylas wants to merge 14 commits intomainfrom
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Remove the HTTP proxy to mcp.us.nylas.com and replace with a native MCP server that calls the Nylas API directly via NylasClient. Provides 37 tools across email, calendar, contacts, and utilities.
Cover JSON-RPC helpers, dispatch routing, protocol handlers, tool registration, grant resolution, and executor methods for messages, calendars, folders, contacts, and utilities.
Allows accepting, declining, or tentatively responding to calendar event invitations via the MCP server.
qasim-nylas
changed the title
Add integration tests using the official MCP Go SDK (github.com/modelcontextprotocol/go-sdk) to validate real client compatibility. The SDK uses newline-delimited JSON, which revealed that our server was only writing Content-Length framed responses. Fix the server to auto-detect the client's framing mode per-request and respond in the same format, ensuring compatibility with both Content-Length clients (Claude Code/TypeScript SDK) and newline-delimited clients (Go SDK/Codex). Changes: - server.go: readRequestPayload returns framing mode, add writeNewlinePayload, writePayload dispatcher - sdk_integration_test.go: 14 tests via official MCP Go SDK - integration_test.go: protocol-level tests with auto-detect reader - integration_tools_test.go: tool-specific tests with mock - server_io_test.go: updated for new signature, add newline test
Add 10 MB Content-Length cap to prevent unbounded memory allocation (SEC-001) and convert recursive readRequestPayload to iterative loop to eliminate potential stack overflow from crafted input (SEC-004).
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Summary
nylas mcp serve) that calls Nylas API v3 viaNylasClientsend_rsvpMCP tool support for calendar invitations--assistant codex)Architecture
Before:
AI -> STDIO -> Proxy -> HTTP -> mcp.us.nylas.com -> Nylas API v3After:
AI -> STDIO -> Native MCP Server -> NylasClient -> Nylas API v3Test Plan
go test ./internal/adapters/mcp/...go test ./internal/cli/mcp/...initialize,tools/list,tools/call, notifications,ping)CODEX_HOME