Evidence record / grok-build
A dated record of one change, kept so the writing that cites it can be checked. Compiled from the sources listed below by the research run, not written for reading. The judgment lives in the issues that cite it, below.
2026-10-13-grok-build-http-mcp-json-rpc-errors-no-longer-cause-repeated-tool-execution
HTTP MCP JSON-RPC errors no longer cause repeated tool execution. The vendor documents a duplicate-execution correction on the HTTP MCP error path. A reported error in an older affected build was not assurance that a side-effecting tool ran zero or one times.
Channel: tagged-release (stable 1.0.52). Half: defect. Date: 2026-10-11 (1.0.52 note).
Operator consequence: Upgrade side-effecting HTTP MCP workflows to 1.0.52 and test an error-after-action case. Keep service-side idempotency keys and an action ledger where repeats are costly; this narrow client correction does not establish exactly-once delivery across disconnects or other retries.
Receipt
Finding metadata
Run: 2026-10-13-profile-refresh-2026-09-21_2026-10-13-frontier-v0
Finding ID: 2026-10-13-grok-build-http-mcp-json-rpc-errors-no-longer-cause-repeated-tool-execution
Profile citations
- grok-build / claim / http-mcp-error-single-execution
Source links
Primary links, including exact changelog lines when available.
Versioned source: run artifact