Full coin profile by CoinGecko id (e.g. bitcoin, ethereum, solana). Returns price, market cap + rank, FDV, 24h volume, all-time high/low with dates, circulating/total/max supply, price changes (1h/24h/7d/30d/1y), categories, and official links (homepage, X, GitHub, subreddit). Richer than crypto.token-price (spot only) and crypto.markets (list row).
/api/crypto/coinPAYMENT-SIGNATURE.The coin API is a pay-per-call crypto endpoint built for AI agents and autonomous software. Full coin profile by CoinGecko id (e.g.
There is no signup and no API key. An agent (or any HTTP client) hits the endpoint, receives an x402 "402 Payment Required" challenge, signs a sub-cent USDC payment on Base or Solana, and retries — the data comes back on the paid request. That makes it a drop-in coin data source for an agent tool-use loop, an MCP host, or a backend that needs crypto data on demand without onboarding to yet another vendor portal.
| Name | Type | Description |
|---|---|---|
idrequired | string | CoinGecko coin id, e.g. bitcoin, ethereum, solana. min 1 chars · max 80 chars |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/crypto/coin?id=example' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/crypto/coin?id=example' \ -H 'PAYMENT-SIGNATURE: <base64-json-payload>' # Or use the canonical runner (handles probe → sign → retry): # EVM_PRIVATE_KEY=0x... node --env-file=.env.local \ # --experimental-strip-types scripts/x402-pay.ts \ # 'https://2s.io/api/crypto/coin?id=example'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.crypto.coin({
"id": "example"
})
console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)import os
from twosio import TwoS
client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])
result = client.crypto.coin(id="example")
print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)// 1. Add @2sio/mcp to your MCP host config (Claude Desktop example below).
// EVM_PRIVATE_KEY funds x402 payments per call.
// claude_desktop_config.json
{
"mcpServers": {
"2sio": {
"command": "npx",
"args": ["-y", "@2sio/mcp"],
"env": { "EVM_PRIVATE_KEY": "0x..." }
}
}
}
// 2. Once the server is running, agents call this tool via standard MCP:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "crypto.coin",
"arguments": {
"id": "example"
}
}
}| Field | Type | Description |
|---|---|---|
ok | boolean | one of: true |
items | array | |
total | integer | Total matching rows upstream; null when unknown. |
source | object |
{
"ok": true,
"items": [
{
"id": "example",
"symbol": "example",
"name": "example",
"marketCapRank": 1,
"categories": [
"example"
],
"priceUsd": 1,
"marketCapUsd": 1,
"fdvUsd": 1,
"volume24hUsd": 1,
"athUsd": 1,
"atlUsd": 1,
"circulatingSupply": 1,
"totalSupply": 1,
"maxSupply": 1,
"change1hPct": 1,
"change24hPct": 1,
"change7dPct": 1,
"change30dPct": 1,
"change1yPct": 1,
"homepage": "example",
"twitter": "example",
"github": "example",
"subreddit": "example"
}
],
"total": 1,
"source": {
"provider": "example",
"url": "example",
"license": "example"
}
}