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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.169

LSP diagnostics Setting

What

A new diagnostics boolean option on each LSP server entry in lspServers that controls whether publishDiagnostics notifications are automatically injected into the agent context after file edits.

Usage
// In settings.json:
{
  "lspServers": [
    {
      "name": "my-lsp",
      "command": "...",
      "diagnostics": false
    }
  ]
}
Details
  • Defaults to true — current behavior is unchanged unless you explicitly set false
  • Setting to false keeps LSP navigation features (go-to-definition, hover, completions) active while suppressing automatic error/warning injection after edits
  • Useful when diagnostics are noisy or slow down the agent loop on large projects
Evidence

Settings schema addition (search for "Whether to push publishDiagnostics into the agent context after edits") — added to lspServers schema at line ~11733

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.169 →