Simple, honest pricing
Start free. Pay when the value is obvious. One prevented incident pays for years of subscription.
One Crux account. Your subscription includes VaultCrux infrastructure and MemoryCrux tools. Billed in GBP excl. VAT.
Free
For developers getting started
- 100 credits/month
- 100MB storage
- Keyword memory search
- Group A only
- Signed receipts
- Live MCP endpoint
- Manual export
Includes VaultCrux:
Keyword retrieval, CROWN receipts, encrypted vault
Developer
Read-only access to Groups A+B
- 500 credits/month
- 500MB storage
- Groups A+B read-only
- Manual sync
- Decision context (read)
Includes VaultCrux:
Keyword + basic signing, light proof
Starter
Semantic search + decision context
- 750 credits/month
- 1GB storage
- Full Groups A+B (semantic vector search)
- Daily auto-sync
- Decision context + causal chains
- Read-only monitoring (Group D)
- assess_coverage + capability discovery (Group E)
Includes VaultCrux:
Semantic retrieval, light proof jobs
Pro
Constraints + pre-action verification
- 2,000 credits/month
- 10GB storage
- All 37 MCP tools (A-E, H)
- declare_constraint
- verify_before_acting
- Unlimited sync
- Team & org scopes
Includes VaultCrux:
Full retrieval + rerank, all proof modes, watch alerts
Team
Org-wide constraints + SCITT audit
- 5,000 credits/month
- 50GB storage
- Everything in Pro
- Team constraints
- Org-wide scopes
- SCITT audit pack
Includes VaultCrux:
10 seats, compliance pack, priority routing
Reasoning
CueCrux reasoning surfaces
- 10,000 credits/month
- 100GB storage
- Everything in Team
- CueCrux reasoning surfaces
Includes VaultCrux:
Everything in Team + reasoning UI
Tool access by tier
| Tool Group | Free | Dev | Starter | Pro | Team | Reasoning |
|---|---|---|---|---|---|---|
A: Knowledge & Memory 9 tools | Keyword only | A read | Full | Full | Full | Full |
B: Decisions & Causality 5 tools | - | Read-only | Full | Full | Full | Full |
C: Constraints & Verification 6 tools | - | - | check only | Full | Full | Full |
D: Monitoring & Health 3 tools | - | - | Read-only | Full | Full | Full |
E: Agent Effectiveness 6 tools | Discover* | Discover* | Coverage + discover | Full | Full | Full |
H: Elicitation & Delegation 8 tools | - | - | Profile read-only | Full | Full | Full |
All tiers include signed cryptographic receipts on every MCP tool call. Overage: ~$0.03/credit.
*Discover = get_platform_capabilities only (free, 0 credits). Lists all available tools and surfaces.
The ROI is trivial
One prevented production incident pays for years of Pro subscription. The question isn't whether £79/month is worth it. It's whether you can afford to have agents acting without organisational context.
Start free, upgrade when it's obvious