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The short answer
Evaluate a support agent on whether the customer’s problem reaches an authorized, supported outcome. Separate answer correctness, completed actions, policy boundaries, and escalation quality. A polite response or a closed ticket is not sufficient evidence that the issue was resolved or that a promised follow-up actually exists.
What to take away
- Verify actions behind promises in the response.
- Keep resolution and escalation as separate outcomes.
- Use policy versions and account identity in the fixture.
Sources checked . Research synthesis and Rubrex recommendations. Examples and local experiments are labeled; they are not client results.
Define resolution for one bounded support task
LangSmith documents review queues for inspecting application runs. Rubrex recommends supplying reviewers with an explicit support outcome contract rather than asking whether a conversation looks helpful. Name the customer’s problem, permitted actions, applicable policy version, and evidence of completion.
Use a synthetic delivery-status case. The assistant may read a test order, explain its current status, and open an internal investigation. It may not promise a refund or disclose another account’s address. Resolution can mean a supported answer or an acknowledged investigation with a useful reference, depending on the case.
Evidence: LangSmith: Use annotation queues [1]
Test promises against the operational record
Create a case where opening the investigation succeeds, another where the tool fails, and a third where the response arrives late. The final message should reflect the confirmed state. A sentence saying the team has been notified should fail if no investigation or notification record exists.
Introduce a frustrated user who requests a policy exception and a second user with a similar order number. The agent should retain the correct account boundary and explain available options. Do not reward a refusal merely for being cautious when an authorized, policy-supported next step exists.
Review the handoff as part of the task
When escalation is required, inspect whether the receiving queue contains the relevant order identifier, attempted steps, confirmed facts, unresolved question, and customer expectation. Avoid forcing the next person to reread an entire conversation containing unnecessary personal data.
Score factual support, action completion, boundary failures, unnecessary escalation, and missing escalation separately. Include a straightforward resolved case and an ambiguous case that genuinely requires a person. Review disagreements should identify the policy or evidence gap instead of averaging ratings that use different definitions of resolution.
| Case | Evidence to retain | Acceptance condition |
|---|---|---|
| Investigation tool fails | Tool error and final response | No false notification promise |
| Similar order IDs | Account and record scope | Correct customer evidence only |
| Escalation required | Queue packet and owner | Useful handoff acknowledged |
Use findings to improve the specific failure path
Accept the delivery assistant when each promised action has a receipt, restricted information remains protected, and unresolved cases reach an accountable next owner. Fix a missing investigation identifier in the adapter or handoff schema; do not treat every operational failure as a prompt-writing problem.
Retain sanitized conversations, policy versions, service receipts, and review labels. Re-run cases when support policies or tool permissions change. Track the burden placed on the receiving team as well as automation success, because an assistant can appear productive while transferring incomplete, duplicated, or misleading work to people.
Limits of the evidence
The support cases and policies are synthetic recommendations. No customer interaction or operational improvement was measured. Review queues provide a workflow for inspection, not independent proof that a support policy or evaluator is correct.
Common questions
Is ticket closure a resolution metric?
Only when the task contract establishes the issue was actually resolved; closure alone can be misleading.
Should escalation count as failure?
A required, useful escalation can be the correct outcome for the case.
Sources & further reading
Primary sources behind this briefing. A source’s findings apply to its own study conditions; publication on arXiv does not establish peer review.
- LangSmith: Use annotation queues LangChain · Living reference · Maintained documentationReviewed: review queues, annotations and review assignment capabilities; no reviewer agreement or speed benchmark. Accessed October 16, 2026.
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