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…tection Add CustomMcpError class that extends McpError with a __isMcpError marker property to enable error detection across module boundaries. This solves instanceof failures when modules are loaded multiple times (e.g., with tsx, different bundlers, or ESM context isolation). Changes: - Add CustomMcpError class extending McpError with __isMcpError marker - Add isMcpErrorLike() type guard checking both instanceof and marker - Update tool error handling to use isMcpErrorLike() instead of instanceof - Export CustomMcpError and isMcpErrorLike for use in middleware This allows x402 payment middleware to throw errors that FastMCP will correctly re-throw as JSON-RPC errors instead of wrapping them in results.
Add CustomMcpError with __isMcpError marker for robust error detection across module boundaries.
- Rename package to @ampersend_ai/fastmcp - Add release.yml workflow for tag-based npm publishing - Update jsr.json namespace - Switch to @ampersend_ai/modelcontextprotocol-sdk dependency - Update repository URL to edgeandnode/fastmcp
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