Pricing
Pick your evidence tier
Start free. Upgrade when it saves you from the wrong choice.
Free
Try before you commit
$0
forever
ModelClaude Haiku
Stack builds3 lifetime
MCP queries3 / day
Saved stacksnone
✓Full stack recommendations — all 6 scored categories
✓Compatibility checker — verified + inferred pairs
✓190+ tool registry — browse and filter
✓MCP read-only — recommend + compare tools
–Viability scoring (Moat / Feasibility / Pain)
–Pricing change alerts
–Export to Cursor prompt
Most popular
Pro
For serious builders
$19
/ month
ModelClaude Sonnet+ Haiku available
Stack buildsunlimited
MCP queries500 / day
Saved stacks5 stacks
✓Everything in Free
✓Full viability scoring — Moat, Feasibility, Painkillerness with sub-scores
✓Competitor landscape — scored on same dimensions
✓Export to Cursor — one-click prompt generation new
✓Pricing change alerts — notified when your stack changes
✓MCP full access — all tools incl. score_idea
✓Save + share builds — shareable link for every build
–Rework with AI Team
Team
For studios + agencies
$49
/ month
ModelClaude Opus+ all models
Stack buildsunlimited
MCP queriesunlimited
Seats3 included
✓Everything in Pro
✦Rework with AI — Claude refines your idea into a stronger one Team
✦Stack comparison mode — same idea, different constraint sets side by side
✦Full model selector — Haiku → Sonnet → Opus per build
✦Unlimited saved stacks — full build history
✦STACK.md export — commit evidence to your repo
✦Priority registry updates — see pricing changes first
MCP server — attach StackSleuth to Cursor, Claude, or any agent
One config line. Your AI agent queries the registry mid-conversation.
sb.recommend_stack() · sb.score_idea() · sb.check_stability()Free · 3/dayPro · 500/dayTeam · unlimited