Tessera the agent can only say what it can prove — and only do what you approve

Ask a question over enterprise data — tables, documents, CI logs. Every claim in the answer traces to the exact records that support it; what cannot be proven is refused, and any action an agent takes ends in a receipt.

business: “Summarise Müller Logistik: its sales orders and agreement terms.” “Which entity has the highest total order value in EUR?” “What is Atlas Trading's total order value?”
devex: “Why did run R-1042 fail?” “What does PR-201 actually change?” “Who is on call for notifications-service?”
github_actions: “Why did run 27014662820 fail?” “Is the published documentation site unreachable for visitors?”

The measured floor

latest recorded eval (2026-06-28) — faithfulness < 1.0 fails the build, in CI:

battery (gold)casesfaithfulnesscoveragequality
business111.0001.0001.000
devex91.0000.9500.889
github_actions51.0000.8330.800

The sub-1.0 numbers are deliberate: offline lexical misses kept visible in CI, closed online on SAP HANA — the trail is in eval/history.jsonl.