Plan the evidence
Translate an agent goal into the capabilities and information required to reach a quality target.
How it works
Spend only on intelligence that moves the task forward.
Spend402 turns a goal, budget, and quality target into an autonomous procurement plan. It evaluates each purchase, measures marginal value, and stops when the next API call is no longer worth paying for.
Procure intelligently
Discover x402 services, compare price and utility, then purchase the most economical provider or bundle.
Know when to stop
Measure quality improvement after each purchase and stop when marginal value falls below the cost.
Built for agentic commerce
Not another payment gateway. A decision layer above payments.
x402 lets agents pay. Spend402 helps them decide whether a payment is actually worth making.
Provider discovery
Connect to payable x402 resources and orchestrate downstream service purchases.
Budget-aware optimizer
Choose providers and bundles under strict budget, latency, and quality constraints.
Receipts & analytics
Expose spend, avoided spend, quality gain, stop reason, and transaction evidence for every workflow.
The procurement loop
Five steps. One autonomous agent.
Spend402 turns a goal into an autonomous procurement plan — buying only what's needed and stopping when enough is enough.
Plan
Decompose the agent goal into required evidence and capabilities.
Discover
Find payable x402 services across Bazaar and provider directories.
Procure
Select the most cost-effective provider or bundle under budget constraints.
Evaluate
Measure whether each purchase actually improved the task quality.
Stop
Halt when the quality target is met or marginal value is too low.
Benchmark verified
53% cheaper than premium. 100% usable results. Zero budget failures.
Proven performance
Benchmark across 50 procurement tasks.
Same dataset. Same budgets. Three strategies compared on quality, cost, and reliability.
| Strategy | Target Hit | Usable | Budget Fail | Cost/Task | Quality |
|---|---|---|---|---|---|
| Cheapest router | 2% | 68% | 98% | $0.019 | 0.72 |
| Premium (buy all) | 24% | 100% | 76% | $0.032 | 0.83 |
| Spend402 | 22% | 100% | 0% | $0.015 | 0.85 |
API endpoints
Ready to integrate.
All endpoints run on Algorand MainNet with GoPlausible settlement and Bazaar discovery.
| Method | Path | Price | Description |
|---|---|---|---|
| POST | /procure | $0.01 USDC | Autonomous procurement |
| GET | /health | Free | Health check |
| GET | /analytics | Free | Procurement stats |
| GET | /provider/* | $0.002–0.005 | Data providers |
MainNet ready
Give your agent a budget.
Let Spend402 protect it.
Start with one goal, one budget, and one quality target. Spend402 handles the procurement loop.
Try Spend402 →Get in touch
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