Open-source CLI and library for testing and evaluating LLM prompts. Run automated evals, red-team your models for safety, and catch regressions before they hit production.
Best For
Teams & solo builders
Key Pros & Cons
Strengths
- 9.0% fork-to-star ratio — strong developer contribution signal
Watch Out For
- Low community score (2/100) — smaller support network
Market Momentum
27
+0
24h
-4
7d
-30
30d
14-day heat score history
Creator Buzz4
Search Interest63
Community Activity2
Growth Momentum38
Score ForecastConfidence: low
20
7-day est.
34
14-day est.
Trend slope: +2.00 pts/day
What This Score Means
Promptfoo is in a declining trend within Developer Tools — consider whether the team is still actively investing before building on it.
Abandonment & Maintenance Risk
High Risk
Trend phaseDeclining
30-day score change-30 pts
Listed on HookFlow3mo old
Discontinued flag✓ No
Commit cadenceVery Active
Last commitToday
Risk Factors
- Rapid score decline over 30 days
- Declining trend — worth monitoring
- GitHub repo actively maintained — last commit Today
GitHub Repository Health
A
Very Active
Stars
23,920
Forks
2,154
Open Issues
476
Watchers
62
Last commitToday
7-day star growth+228 stars
Fork / Star ratio9.0%
Snapshot dateAug 4, 2026
Data Lock-In Index
100
/ 100 (lower = more open)
○ Webhooks Out○ Bulk Export○ Open Formats
vs. Category Peers (Developer Tools)
Tool
A.R.C.
Heat
7d Δ
Lock-In
Promptfoo (this)
Prompt testing & evals
—
27
-4
100
Bun▲ Peak
—
66
+3
100
Julius
—
60
+14
100
Sentry
B
47
+15
0
Resend
B
47
+10
0
Dex▲ Declining
—
47
-10
100
Lock-In: 0 = fully open, 100 = maximum data lock-in. A.R.C. = Architecture · Reliability · Context score (A–F).
Snapshot Disclaimer: All scores, rankings, and metrics in this report reflect data as of August 4, 2026. Heat scores, community activity, and market momentum are recalculated daily — figures shown here represent a point-in-time snapshot and may differ from current values on HookFlow.ai.
HookFlow.ai Infrastructure Report — August 4, 2026hookflow.ai