A web app that lets API and SaaS builders charge sub-dollar per-request fees without hitting Stripe minimums
Stripe's $0.50 per-charge minimum makes it economically impossible for API and SaaS builders to charge per-request at sub-dollar rates — the processing fee exceeds the revenue on every call. This product solves it with a prepaid credit wallet model: buyers top up in bulk (above Stripe's minimum), the wallet is debited per request at any granularity down to fractions of a cent, and sellers receive payouts when accumulated balances cross a configurable threshold. The whole thing is a self-serve integration, not an enterprise billing platform.
Demand Breakdown
Social Proof 1 sources
Gap Assessment
4 tools exist (Orb, Lago, Metronome (now inside Stripe), Small Transfers) but gaps remain: Enterprise-only, requires significant integration work and sales engagement; no self-serve tier; minimum viable for large infra companies, not indie API builders who want to go live in a day.; Self-hosted infrastructure burden; still requires a payment processor underneath (Stripe minimum problem is not solved); 6k GitHub stars but a significant ops lift for solo founders and small teams..
Features8 agent-ready prompts
Competitive LandscapeFREE
| Product | Does | Missing |
|---|---|---|
| Orb | Usage-based billing platform for SaaS and API products; handles event metering, pricing models, and invoicing at high volume. | Enterprise-only, requires significant integration work and sales engagement; no self-serve tier; minimum viable for large infra companies, not indie API builders who want to go live in a day. |
| Lago | Open-source metered billing that builders self-host; event ingestion, aggregation, invoice generation. | Self-hosted infrastructure burden; still requires a payment processor underneath (Stripe minimum problem is not solved); 6k GitHub stars but a significant ops lift for solo founders and small teams. |
| Metronome (now inside Stripe) | Real-time usage event ingestion and flexible billing for consumption-based SaaS; acquired by Stripe in 2026 for roughly $1B. | Enterprise product designed for companies already running Stripe at scale; does not solve the $0.50 minimum problem because it still bills through Stripe charges; no prepaid wallet aggregation for sub-cent per-request workloads. |
| Small Transfers | Per-request billing from 0.000001 USD using a prepaid wallet model; exactly the same core mechanic. | Pre-product at time of HN launch; minimal public integration docs; no SDK or dashboard for seller analytics; no sign of active development or public traction beyond the launch post. |
Leads38BUILDER
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