For integrations

Phat hanh the theo lap trinh

Tao mot seed duy nhat, phat hanh the ao o trang thai pending_top_up va nhan dia chi funding wallet chi trong mot API call.

REST JSON Seed auth Funding wallet
Visa
Agent-issued
4719 38•• •••• ••••
Issued byseed_…
CreatedJust now
Tuc thiPhan hoi JSON
SeedThong tin xac thuc duy nhat
Visa / MCChon mang
WalletKem san dia chi
What you can build

Sau mau su dung ma API nay duoc xay dung de phuc vu

Endpoint chi la nen tang; cac pattern moi la nhung gi cac builder cua agent thuc su trien khai.

Agent chi tieu tu dong

Agents that decide what to buy and execute the purchase without human approval. The API issues a fresh card per transaction, charges it, then deletes it — leaving no reusable payment surface in the wild.

Tu dong hoa chien dich quang cao

Programmatic issuance of one BIN-471938 (Visa Business) card per Meta / Google / TikTok ad account. Rotate cards every 30-60 days to keep accounts clean.

The dung mot lan cho tung nguoi dung

Marketplaces or platforms that need a unique card per end-user transaction. Issue, charge, delete in under 10 seconds — no PCI scope, no card-storage burden.

Khai thac free trial

Sign up to free trials at scale. Each trial gets a card with the minimum load; deletion before renewal blocks the auto-charge cleanly.

Tinh phi SaaS theo workspace

Multi-tenant agents that bill upstream SaaS (AWS, OpenAI, Cloudflare, GitHub) on a per-workspace card. Costs become attributable to the customer without leaking your master billing identity.

Worker scraping va signup

Each worker requests a card via the API the moment it needs a payment surface, uses it for the intended action, then closes it. The $1.50 unit cost is a fraction of any alternative approach.

Quick start

Tao seed, the va wallet trong 1 lan goi

Endpoint nay tra ve seed duy nhat, mot the o trang thai pending_top_up va dia chi wallet theo asset. Dung X-Seed cho cac request tiep theo.

1. Generate (seed + card + wallet)

curl "https://cryptocardy.com/v1/api?card=visa&asset=BTC"
import json
import requests
r = requests.get(
    "https://cryptocardy.com/v1/api",
    params={"card": "visa", "asset": "BTC"},
).json()
print(json.dumps(r, indent=2))
const r = await fetch("https://cryptocardy.com/v1/api?card=visa&asset=BTC").then(r => r.json());
console.log(JSON.stringify(r, null, 2));
Integration files

Metadata API doc duoc boi may

Dung cac tep nay de kham pha endpoint, schema request/response va auth header.

TypePathDescription
GET/.well-known/openapi.jsonOpenAPI specification for the REST API.
GET/.well-known/ai-plugin.jsonPlugin manifest (references the OpenAPI spec).
GET/.well-known/agent.jsonMachine descriptor (links to spec + docs).
GET/llms.txtShort integration overview and URLs.
API surface

Tat ca endpoint trong mot cai nhin

Su dung base URL https://cryptocardy.com/v1/api.

MethodPathDescription
GET/v1/apiGenerate a seed, return a card in pending_top_up state, and provide a funding wallet address. Optional query params: card, asset.
Security model

Truy cap bang seed, khong co dat lai mat khau

Seed la thong tin xac thuc cua ban. Hay luu no an toan va gui bang header X-Seed. Neu mat seed, quyen truy cap khong the khoi phuc.

Trang thai the

The duoc tra ve voi card.state = pending_top_up, de he thong tich hop biet the da ton tai nhung can duoc funding truoc khi kich hoat.

Bat dau tich hop trong vai phut

Dung quick start de tao seed, the va funding wallet, sau do theo tai lieu API de xem parameter va response field.

Doc quick start