Hardening surfaced by a large ACE opportunity reconciliation.
Rate limits
- Recognize the live
HTTP 400 {"message":"Rate exceeded. Try again later."}throttle (not only-32004/429) and back off across the ~30ssendMessagerefill window. Previously these throttles surfaced as hard errors mid-workflow.
Large sessions
- Cap the combined tool-result size (
text+structuredContent) under the MCP client's token limit, so largeget_sessionresults (especiallyresponse_format:'json') no longer exceed it and get shunted to an unreadable temp file. Trims events while always preservingstatus+ pendingapproval_requests.
Stage-progression guidance
send_messagenow documents that opportunity writes and stage progression (including Launched / closed-won) are partner-initiated; the agent's readiness "validation" is advisory, not a hard gate — phrase requests as instructions to execute.
Also includes the previously-unreleased v1.0.8: clickable opportunity console links, friendly tool labels (annotations.title), a status emoji, and structuredContent no longer carrying the raw payload.
Install: download aws-partner-central.mcpb below and open it in Claude Desktop → Settings → Extensions to upgrade.