Agents that act more, and cost less to run.
Every tool call, search and model hop your agents make is a metered API somewhere. APIPay plugs those APIs into one payment layer, gives your agents one key for every model, and lets you sell what they do as a product.
Estimates and recommendations, never guarantees · You stay in control
Built for AI Agents teams
What's holding AI Agents back.
The problems we hear most — and exactly what APIPay is built to fix.
Costs that scale with every step
Autonomous loops call search, scraping and data APIs dozens of times per task. The more useful your agent becomes, the faster the bill grows.
A drawer full of keys
Each model and tool lives behind a different account, key and rate limit, so a single agent run depends on a dozen fragile credentials.
No clean way to charge per action
Customers want to pay per task or per outcome, but seat-based billing tools were never built for agents that act on their own.
Tool integrations that drift
When a third-party tool changes its schema, agents fail silently mid-task and your team spends the week patching connectors.
The APIPay stack, tuned for AI Agents.
Three products for the APIs you pay for, the APIs you need and the APIs you sell — plus AI that works across all of them.
iAPI
$5,000 one-time per API
Bring the paid search, enrichment or scraping API your agents depend on. We connect it to our API payment infrastructure so its recurring cost is covered, and your agents keep calling it exactly as before.
Explore iAPIInfinite API
$2,000 one-time
Commission custom, unlimited lifetime tool APIs built for your agent's exact workflow — plug-in code that removes the recurring per-call cost from the tools your agents use most.
Explore Infinite APIAPI-Pay
Gateway + monetization
Package your agent as an API product: issue customer keys, set per-task plans and rate limits, and invoice from metered usage automatically.
Explore API-PayAI Studio
Route every reasoning, extraction and summarization step through one OpenAI-compatible endpoint and one key, and switch models without touching agent code.
Agent Swarms
Point a swarm at your go-to-market and let it research verticals, rank the use cases buyers will pay for and hand you next steps each cycle.
Where AI Agents teams start.
Four high-impact places to put APIPay to work first.
Research agents
Agents that browse, read and summarize sources on demand — with the underlying search API cost handled through iAPI.
Support and ops agents
Triage tickets, draft replies and update systems through one AI Studio key instead of a tangle of provider accounts.
Agent-as-a-service
Sell your agent to other businesses with API-Pay keys, per-task plans and usage-based invoices.
Multi-tool orchestration
Give agents a stable, unlimited toolset with Infinite API so a single run never breaks on a vendor's quota.
From sign-in to covered costs in four moves.
No migrations and no rebuilds — APIPay works alongside the systems you already run.
- 01
Sign in
Create your account and open your command center. Everything starts from the Overview.
- 02
Pick your path
Start iAPI onboarding for an API you pay for, scope an Infinite API, or connect your own endpoint to API-Pay.
- 03
Issue keys
Generate keys for your team, customers or partners, with plans and rate limits that fit your business.
- 04
Build and grow
Call every AI model from one endpoint, switch on Agent Swarms and watch usage in real time.
Made for every seat in AI Agents.
Agent engineers
Ship agents with a stable toolset and one model endpoint instead of a credential maze.
- One AI Studio key
- Unlimited lifetime tools
- Clear rate-limit headers
Founders
Turn an internal agent into a product customers pay for by the task.
- Per-task pricing
- Customer keys in minutes
- Automatic invoicing
Finance leads
Replace unpredictable per-call tool spend with one-time, plannable costs.
- Recurring API costs covered
- One payment layer
- Usage you can audit
AI Agents, answered.
Still curious? Our team answers every message personally.
Do my agents need to change how they call their tools?
No. With iAPI we connect the API you already pay for to our payment infrastructure, and your agents keep calling it the same way. AI Studio is OpenAI-compatible, so most agent frameworks work by changing a base URL and key.
Can I charge customers per task instead of per seat?
Yes. API-Pay lets you define plans with included usage, overage pricing and rate limits, then meters every call through the gateway and generates invoices from real usage.
What if a tool API I rely on isn't a fit for iAPI?
That's where Infinite API comes in: we build a custom, unlimited lifetime API for that capability as plug-in code. Tell us what your agents need and we'll scope it with you.
Ready to put APIPay to work in AI Agents?
Sign in, open your Overview and start with the API that costs you the most. We'll take it from there.