API Marketplace for AI Agents

One marketplace for agent APIs.
Credits or x402.

Give your agent one integration for paid data APIs. Discover endpoints, call with an API key and credits, or use wallet-native x402 when you want full autonomy.

Recommended
API key + credits
Human signs up once, gets $1 credit, then the agent calls with one header.
Authorization: Bearer px_...
Wallet-native
x402 payments
No account path for crypto-native agents that can pay USDC on Base per call.
X-Payment: 0xtxhash
Browse Marketplace →Get $1 free credit
22+
APIs Available
$0.001
Starts / Call
2
Payment Paths
proxagora.com/api/discover
Live APIs22+ endpoints
domain-reputationDomain$0.05200
email-verifyContact$0.01200
sentiment-analysisIntelligence$0.10200
geo-lookupNetwork$0.001200

Everything agents need.

Nothing they don't.

Discovery
Agents query the registry by category and max cost. Structured schema, no docs to read.
GET /api/discover
Dual Payment Rails
Stripe MPP for any agent, x402 USDC for crypto-native. Both settle instantly.
MPP · x402
Agent-Native
JSON in, JSON out. MCP server live. Designed for autonomous agents, not humans.
MCP server live
Reliability-First
Every API is health-checked hourly. Agents always route to the most reliable endpoint.
Hourly health checks
Agent-native onboarding
One API call creates an account. $1.00 free credits included. No email, no OAuth, no human required.
POST /api/account

Three steps. Zero friction.

Discover, call, pay. Your agent can be autonomous from the first request.

01
Discover APIs
Query /api/discover to get a structured list of available endpoints, categories, and pricing.
02
Get 402 challenge
Call any endpoint. Receive a 402 with Stripe MPP or x402 payment instructions.
03
Pay and get data
Pay with USDC on Base or Stripe, retry with the receipt — get the response in milliseconds.
AGENT CALL EXAMPLE
# 0. Agents self-register in one call — $1 free credit included
curl -X POST https://proxagora.com/api/account \
  -d '{"name":"my-agent"}'
# → { "api_key": "px_...", "balance_usd": 1.00 }

# 1. Discover available APIs
curl https://proxagora.com/api/discover?category=domain

# 2. Call any endpoint using your API key
curl -X POST https://proxagora.com/api/domain-reputation \
  -H "X-API-Key: px_live_YOUR_KEY" \
  -d '{"domain":"example.com"}'
# → 200 { score: 90, verdict: "clean", signals: [...] }
30+ APIs across 6 categories
🌐Domain
📡Network
📋Contact
💻Tech
🧠Intelligence
📊Business
🎬Media
✈️Travel
₿Crypto
💰Finance
Pricing

Pay per call. That's it.

No subscriptions, no minimums, no seats. Every API sets its own price. You pay only for what you use.

$0.001starting price per call→$0.10max
Browse Marketplace →
Getting Started

Two ways to pay.

No signup required for x402 — your wallet is your identity. Or sign up once to get an API key and pre-fund a balance.

₿
x402 — Wallet-native
No signup. No API key.

Call any endpoint. Get a 402 with payment instructions. Pay USDC on Base, retry with the tx hash. Done. Your wallet address is your identity.

✓ No account required
✓ Pay per call in USDC on Base
✓ Works with any crypto wallet
✓ Agent can operate fully autonomously
curl -X POST /api/whois \ -H "X-Payment: 0xtxhash" \ -d '{"domain":"example.com"}'
🔑
API Key — Card-based
Sign up once, inject into agent.

The human developer signs up, gets an API key, and pre-funds a balance with a card. The agent uses that key — no wallet, no crypto, no per-call signing.

✓ Sign up once via GitHub, Google, or email
✓ Pre-fund balance with card (Stripe)
✓ Inject API key into your agent at runtime
✓ Agent just calls — no payment logic needed
Get your API key — $1 free →
The API Key Flow
👤
Human Dev
Signs up once
→
🔑
Dashboard
Gets API key + $1 credit
→
🤖
Agent
Uses key at runtime
→
⚡
Proxagora
Returns data

Give your agent
paid data access.

Start with credits today. Keep x402 ready for fully autonomous flows.

Browse MarketplaceRead the Docs