Agent Reviewer

Agent Reviewer Protocol

Task is done — now look back. What went well, what went wrong, what should be different next time? Goal: never repeat the same mistake and continuously improve skills and processes.

Core principle: Retrospectives are painful but necessary. A good agent evaluates itself.

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6 Review Dimensions

1. Goal Alignment

Did the result match the original intent?

• Was the user's actual request met?
• Did scope creep occur?
• Over-delivery or under-delivery?

2. Efficiency

Did the task take longer than necessary?

• Unnecessary tool calls?
• Repeated operations?
• Sequential steps that could have been parallel?
• Token/resource waste?

3. Decision Quality

Were decisions well-reasoned?

• Were assumptions verified?
• Were alternatives considered?
• Did early decisions cause later problems?

4. Error Handling

How were errors addressed?

• Detected quickly?
• Right strategy applied?
• Same error repeated?

5. Communication

How was user interaction quality?

• Unnecessary confirmations requested?
• Critical information missing at key points?
• Too many or too few questions?

6. Reusability

Can lessons from this task transfer to the next?

• General patterns discovered?
• Which skills were missing or insufficient?
• Which decisions should become standard?

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Finding Severity

| Severity | Meaning | Action | |----------|---------|--------| | CRITICAL | Endangered the task or significantly reduced quality | Must fix | | MODERATE | Created inefficiency but didn't break the result | Improve | | POSITIVE | Something that went better than expected | Repeat, standardize |

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Output Format

AGENT REVIEWER — Task Retrospective
Task     : [task name]
Score    : X/10
Findings : N critical | N moderate | N positive

## Dimension Scores

| Dimension | Score | Summary |
|-----------|-------|---------|
| Goal Alignment | X/10 | ... |
| Efficiency | X/10 | ... |
| Decision Quality | X/10 | ... |
| Error Handling | X/10 | ... |
| Communication | X/10 | ... |
| Reusability | X/10 | ... |
| **Overall** | **X/10** | |

## Critical Findings
[If any — what happened, why critical, how to prevent]

## Improvement Areas
[Inefficiencies, missed opportunities]

## What Went Well
[Decisions and approaches worth repeating]

## Action Items

### For Next Task
1. [Concrete change — what to do]
2. [Concrete change]

### Skill / Process Improvement
1. [Which skill should be updated / added]
2. [Which pattern should be standardized]

## Lessons Learned
[Items a future agent instance should know — candidates for memory-ledger]

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Inefficiency Patterns — Auto-Detect

Scan the task history for these patterns:

| Pattern | Symptom | Fix | |---------|---------|-----| | Repeated tool call | Same file/API read 2+ times | Cache it | | Unnecessary confirmation | Low-risk step triggered approval | Adjust checkpoint-guardian threshold | | Late assumption discovery | "Actually it should be..." after error | Trigger assumption-checker earlier | | Sequential parallel steps | Independent steps ran sequentially | Use parallel-planner | | Blind retry | Logic error treated as transient | Fix error-recovery categorization | | Context loss | Previous step info forgotten | Memory-ledger not updated | | Over-decomposition | 2-step task split into 8 | Adjust task-decomposer granularity |

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Skill Performance Evaluation

Evaluate skills used during the task:

## Skills Used

| Skill | Used? | Effective? | Notes |
|-------|-------|------------|-------|
| task-decomposer | Yes/No | Good/Fair/Poor | ... |
| checkpoint-guardian | Yes/No | Good/Fair/Poor | ... |
| assumption-checker | Yes/No | Good/Fair/Poor | ... |
| tool-selector | Yes/No | Good/Fair/Poor | ... |
| parallel-planner | Yes/No | Good/Fair/Poor | ... |
| error-recovery | Yes/No | Good/Fair/Poor | ... |
| memory-ledger | Yes/No | Good/Fair/Poor | ... |
| output-critic | Yes/No | Good/Fair/Poor | ... |

Missing / untriggered skills and why?

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When to Skip

• Task was single-step or under 5 minutes
• Prototype / experimental task
• User said "no retrospective needed"

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Guardrails

• Be honest, not kind — the value is in finding problems, not hiding them.
• Concrete suggestions only — "do better" is useless; "cache file reads to avoid 3 redundant calls" is actionable.
• Cross-skill: this is the ecosystem's feedback loop — findings here should update other skills and processes.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: fatih-developer
• Source: fatih-developer/fth-skills
• License: MIT

Install and usage instructions live in the source repository linked above.