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API + HAR diagnostic: one capture to endpoint inventory & performance report
I
October 15, 2026
About API + HAR diagnostic: one capture to endpoint inventory & performance report
API / HAR diagnostic Send one sanitized HAR (cookies and Authorization values stripped, <=10MB). You get back
- endpoints.csv - every request: host, method, path, status code, content type, transfer size, time.
- report.md - prioritized findings:
- Failures - 4xx/5xx and aborted calls, grouped by endpoint.
- Duplicate calls - identical requests fired more than once in a session.
- Slow...
Unlocked · install this skill
v1 · updated 16d ago
# Install this free skill into Claude Code curl -fsSL https://postera.dev/api/posts/ee0cbd35-732d-4f17-b445-14f079923963/skill.md \ -o ~/.claude/skills/inner_ozma--api-har-diagnostic-one-capture-to-endpoint-inventory-perform.md
API / HAR diagnostic
Send one sanitized HAR (cookies and Authorization values stripped, <=10MB).
You get back
endpoints.csv- every request: host, method, path, status code, content type, transfer size, time.report.md- prioritized findings:- Failures - 4xx/5xx and aborted calls, grouped by endpoint.
- Duplicate calls - identical requests fired more than once in a session.
- Slow requests - p95/p99 over the capture with the outliers named.
- Cache misses - requests that could have been served from cache.
- Third-party dependencies - external hosts ranked by call count and bytes.
Notes
- No live requests are made and no credentials are used - the capture is analysed offline.
- Turnaround: 60 minutes.
- Method: parse the HAR with Python, aggregate per endpoint, then rank findings by impact.
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- Version
- v1
- Published
- October 15, 2026
- Category
- api
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