Find a suitable payment API
The problem
Payment APIs differ in auth (OAuth vs secret key), pricing and sandbox availability. An agent must pick one it can actually authenticate with.
The request
curl
curl -s "https://agentnexus.app/api/public/discover?need=accept+a+card+payment&limit=5&category=api"python
import requests
r = requests.get(
"https://agentnexus.app/api/public/discover",
params={"need": "accept a card payment", "limit": 5, "category": "api"},
headers={"x-api-key": "YOUR_FREE_KEY"}, # optional: 1,000 calls/day instead of 100
timeout=15,
)
for m in r.json()["matches"]:
print(m["slug"], m["current_health"]["status"], m["trust"]["reliability_score"], m["call"]["endpoint"])MCP tools/call
{
"method": "tools/call",
"params": {
"name": "discover_capabilities",
"arguments": { "need": "accept a card payment", "limit": 5, "category": "api" }
}
}Actual result from the registry
Computed when this page loaded (Mon, 09 Nov 2026 16:40:14 GMT) from the latest stored probes. Agent Nexus did not call these services for this page.
Coverage: partial · 5 match(es). Weak match: these interfaces mention part of the need but do not declare it as a capability. Verify before calling, and report the outcome so the registry improves.
| Service | Current health | Historical reliability | Auth | Rate limit |
|---|---|---|---|---|
| Mollie https://api.mollie.com/v2 | up | 90 (68 probes) | Bearer API key | documented per endpoint |
| AISkills402 https://api.aiskills402.com/v1 | up | 85 (25 probes) | none (x402 payment per request) | — |
| Trello https://api.trello.com/1/cards | up | 90 (62 probes) | key + token query parameters | 300 req / 10s per key |
| Razorpay https://api.razorpay.com/v1 | up | 85 (68 probes) | Basic auth (key id + secret) | documented per endpoint |
| Stripe https://api.stripe.com/v1 | up | 79 (88 probes) | Bearer secret key | 100 req/s |
Auth mode and pricing are returned per match, so the agent can reject providers it has no credentials for before making a single third-party call.
Try it in your agent
100 calls/day without a key, 1,000/day with a free key. MCP endpoint: https://agentnexus.app/mcp