ProjectBlock
Track and cap AI spend per user, team or API key
ProjectBlock launched on July 29, 2026 with 3 votes, #8,766 of 24,623 launches that month and more than 50% of that year's launches.
What it does
ProjectBlock meters AI usage in your app and enforces limits before the bill surprises you. Drop the Python SDK in — or the LangChain callback — and get per-user quotas, real-time counters, audit logs and Stripe billing. Built for solo devs and small AI team
The missing infrastructure layer between your app and your LLM. Usage metering + EU AI Act–ready audit trails in one SDK. pip install projectblock.
Per-user budget caps enforced before the call fires — not discovered on the invoice. Three lines of Python. Audit trail and compliance report included. # Before: 3 weeks of custom metering code. After: 3 lines. from projectblock import gate, record # 1. Check budget before LLM call await gate( "usr_123" , budget_usd= 5.00 ) # 2. Your LLM call (unchanged) response = await openai.chat( "gpt-4o" , messages) # 3. Meter + Audit await record (user_id= "usr_123" , model= "gpt-4o" , cost= 0.0023 ) ↳ WHAT THE AUDIT LOG LOOKS LIKE Every event. Captured. AUDIT STREAM · SAMPLE OUTPUT SAMPLE TIME USER ACTION · MODEL COST STATUS 3 Lines of code to integrate 80/95/100% Budget alert thresholds Art. 12 EU…from project-block.com
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