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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 v2.1.235

Artifact MCP is on by default

Use it now
Useful4 Signal4
Artifacts Notable not in their notes

The built-in artifact MCP server is now on for everyone unless you set the env var to disable it.

Feature flag
tengu_teal_corbel On for this account, and not off by default

The flag server returned on for the one account this site reads, and nothing in this release compiles it off by default. The compiled default is shown below, and says which it is when we cannot read one: a fifth of gates compile in a string or a number rather than on or off, and most published releases have no gate table behind them at all. No client can see what the server returns for your account.

This account: on · anonymous baseline: on · compiled default in v2.1.235: on

tengu_cloth_snorkel On for this account, and not off by default

The flag server returned on for the one account this site reads, and nothing in this release compiles it off by default. The compiled default is shown below, and says which it is when we cannot read one: a fifth of gates compile in a string or a number rather than on or off, and most published releases have no gate table behind them at all. No client can see what the server returns for your account.

This account: on · anonymous baseline: on · compiled default in v2.1.235: not a boolean we can read

Read once, for one account on one subscription tier, against v2.1.235. It isn't a statement about your account. What a flag value here can and cannot tell you

CLAUDE_CODE_ARTIFACT_MCPCLAUDE_CODE_ARTIFACT_COMMENTS
What

The built-in artifact MCP server no longer waits on a remote flag. It is enabled unless you set the environment variable CLAUDE_CODE_ARTIFACT_MCP to turn it off. The related artifact-comments feature stays off by default behind its own env var CLAUDE_CODE_ARTIFACT_COMMENTS and the flag tengu_teal_corbel.

Details
  • Enablement now reads CLAUDE_CODE_ARTIFACT_MCP ?? true, so absent the variable it is on; the previous remote flag tengu_cloth_snorkel no longer gates it.
  • The separate reporter that records where an artifact came from moved to the new env var and flag name, whose fallback is false.
Evidence

Xd.CLAUDE_CODE_ARTIFACT_MCP ?? !0

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.235 →