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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 v2.1.247

Bot and service-account tokens are now recognised

Under the hood
Useful2 Signal4
Auth

Claude Code can now tell when your token is a bot or service account with no user behind it.

What

New checks read the auth token's claims to tell whether it is acting as a bot or belongs to a service account, which have no user identity attached.

Details
  • Bot detection accepts act_as_bot as either a boolean true or the string "true".
  • A service account is identified by having no account UUID and no subject, but non-empty org_service_name and code_agent_id.
Evidence

code_agent_id

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 v2.1.247 →