The Airbnb for API Capacity.
Sell your unused API quota to AI agents — without ever sharing a key.
x402 protocol · Solana payments
How It Works
Three sides. One marketplace.
Sellers list capacity. ProxyGate routes requests. Agents pay per call.
Sellers List Capacity
Upload your API key to the Vault. Set your price, capacity limits, and availability. Your key never leaves the secure environment.
Keys encrypted at rest · AES-256-GCM
ProxyGate Routes
Intelligent routing selects the optimal provider based on latency, uptime, price, and available capacity. Capacity fences protect sellers.
Sub-50ms routing · Redis capacity fence
Agents Pay & Use
AI agents pay per request via x402 micropayments or pre-paid credits. No accounts, no API keys, no billing setup needed.
x402 protocol · USDC, SOL, or $PGATE
Features
Everything you need, nothing you don't
A complete API marketplace infrastructure. Vault-secured. Agent-native. Crypto-powered.
Key Isolation
API keys enter HashiCorp Vault and never leave. Decrypted in-memory for a single request, then released. Zero disk, zero logs.
x402 Payments
Native HTTP 402 micropayments. Agents pay per request with USDC, SOL, or $PGATE on Solana. No invoices, no billing.
Capacity Marketplace
Buy and sell unused API quota. Sellers set prices and limits. Platform keys provide guaranteed baseline availability.
Multi-Provider
OpenAI, Anthropic, Google, Stability AI, ElevenLabs — all through one endpoint. Automatic failover across providers.
Agent-Native
MCP server for 60+ AI clients. TypeScript and Python SDKs. OpenAI-compatible endpoints. Built for machines first.
Vault Security
HashiCorp Vault with AppRole auth, audit logging, short TTL leases, and key rotation. Enterprise-grade key management.
Real-time Streaming
SSE streaming for LLM responses. Token-by-token metering. Transparent proxy with sub-50ms overhead target.
Token Economics
$PGATE with 1% burn per transaction, 0.1% transfer fee, staking rewards, and governance. Deflationary by design.
For Agents
One wallet. Every API.
No API keys to manage. No accounts to create. Just fund your wallet and start making requests.
MCP Integration
Ship a ProxyGate MCP server and get instant access to 60+ AI clients. Claude, ChatGPT, VS Code Copilot, Cursor — zero custom integration.
Available tools:
✓ call_api Call any paid API with auto-payment
✓ check_balance Check wallet credit balance
✓ discover_apis Browse available API providers
✓ deposit_credit Add funds to your account
TypeScript SDK
OpenAI-compatible interface. Change your base URL, add a wallet, and existing code works. Auto-handles x402 payment negotiation.
import { ProxyGateClient } from '@proxygate/sdk';
const client = new ProxyGateClient({
wallet: '~/.config/solana/id.json',
});
const res = await client.openai.chat.completions.create({
model: 'gpt-4o',
messages: [{ role: 'user', content: 'Hello' }],
});
Python SDK
pip install proxygate. Drop-in replacement with automatic x402 payment handling. LangChain and CrewAI plugins included.
from proxygate import ProxyGateClient
client = ProxyGateClient(
wallet="~/.config/solana/id.json",
)
response = await client.openai.chat.completions.create(
model="gpt-4o",
messages=[{ "role": "user", "content": "Hello" }],
)
Session Wallets
Ephemeral session wallets with spend limits. Owner funds a budget, agent spends within it, remaining balance auto-drains after session.
→ Creating session wallet... budget: 0.5 SOL
→ Agent authorized spend: $0.12
→ Request: GPT-4o chat cost: $0.0034
→ Request: Claude 3.5 Sonnet cost: $0.0041
→ Session complete remaining: $0.48
✓ Funds returned to owner wallet
For Sellers
Monetize your unused capacity
Your API key stays in the Vault. Your capacity enters the marketplace. You earn revenue on every request served.
OpenAI (GPT-4o, GPT-4o-mini)
Anthropic (Claude 3.5 Sonnet)
Earnings
$0.00
Today
$0.00
This week
$0
This month
$0
All time
Pricing
Pay per request. Stake for discounts.
No subscriptions. No minimums. Agents pay only for what they use. Stake $PGATE for fee discounts and revenue sharing.
Explorer
0 $PGATE staked
Basic access, standard routing
- Standard routing
- All APIs
- Pay per request
Builder
1,000 $PGATE staked
Usage analytics + bulk discounts
- Everything in Explorer
- Usage analytics
- Bulk discount eligible
Architect
10,000 $PGATE staked
Priority routing + governance
- Everything in Builder
- Priority routing
- Governance voting
- Proposal creation
Operator
100,000 $PGATE staked
Dedicated capacity + SLA
- Everything in Architect
- Dedicated capacity
- SLA guarantees
- Early API access
- Beta features
All payments in USDC, SOL, or $PGATE. 1% of each transaction is burned. Platform fee: 5-15% markup on upstream API cost.
Up and running in seconds
One command to install. One call to make. Your agent is paying for APIs on Solana.
Built on proven infrastructure
ProxyGate combines battle-tested protocols and infrastructure for trustless API commerce.
x402 Protocol
by Coinbase
HTTP 402 micropayments for the internet. Adopted by Stripe, Google, Cloudflare. 35M+ transactions on Solana.
Solana
Token-2022
$PGATE with transfer fee extension, native metadata, and DEX support. Sub-second finality. Near-zero transaction costs.
HashiCorp Vault
Key Management
Enterprise-grade secret management. AES-256-GCM encryption at rest. AppRole auth. Audit logging. Short TTL leases.
Project structure
Get Started
Join the waitlist
Be among the first to sell capacity or access APIs through ProxyGate. Early access opens Q2 2026.