Writing

Notes from building the products on this site. Mostly debugging logs and protocol archaeology — the kind of thing I went looking for and could not find.

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24 August 2026
When an MCP server lies about who issued your token
Debugging an RFC 9207 issuer mismatch that blocked Spaceship's MCP server in Claude Code, and the config escape hatch that fixes any server with the same bug.
4 min read· mcp· oauth· claude-code· debugging