Source Intelligence

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.

All of v2.1.224 Home All releases olderv2.1.223 v2.1.225newer

Sandbox AWS credential pairs get precedence rules and scope warnings

You'll notice
Useful3 Signal2
Sandbox not in their notes

Conflicting AWS credential pairs in the sandbox now resolve predictably and warn about risky setups.

credentials.awsPairs
What

The sandbox's forwarding of AWS credentials via credentials.awsPairs now resolves conflicts predictably and warns about risky setups. Later entries override earlier ones with the same target, each environment variable can fill only one slot, and the losing slot is disabled with a placeholder rather than silently taking the wrong value.

Details
  • Deliberately empty "suppressor" entries are preserved so they keep implicit AWS auto-pairing switched off.
  • Pairs whose key id or secret are not masked as whole values are either dropped or forwarded with a warning.
  • New warning when SigV4 re-signing is configured without injectHosts, because the real secret is then in scope at every entry in network.allowedDomains.
  • New warning when a session token belonging to a forwarded pair is not itself forwarded.
Evidence

SigV4 re-signing with the real secret is in scope at EVERY host in network.allowedDomains

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 v2.1.224 →