fix: use @modelcontextprotocol/sdk for blind-fill MCP server#85
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Claude Code cannot connect to MCP servers using manual Content-Length framing — they stay stuck on "pending" status. Rewrite blind-fill to use McpServer + StdioServerTransport from @modelcontextprotocol/sdk and bundle with esbuild into a self-contained .mjs file. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
blind-fill.mjsto useMcpServer+StdioServerTransportfrom@modelcontextprotocol/sdkinstead of manual Content-Length framing, which Claude Code (v2.1.92+) cannot connect tonpm run build:blind-fill) to produce a self-containedblind-fill.bundle.mjswith all dependencies (SDK, zod, ws) inlinedContext
Claude Code stays stuck on "pending" status when connecting to MCP servers that use handmatige Content-Length framing. All working MCP servers (playwright, filesystem, etc.) use the official
@modelcontextprotocol/sdkStdioServerTransport. The tool logic (CDP connection, vault secret fetching, DOM injection, origin validation) is unchanged.Test plan
npm run build:blind-fill— producessrc/local-mcp/blind-fill.bundle.mjsGET /api/local-mcp/blind-fillreturns the bundled scriptblind_fillandblind_typetools with a vault secret and browser target🤖 Generated with Claude Code