Tokenized Stocks on Base
Use this when you need the same stock from every issuer on Base in one call: send a ticker (NVDA, AAPL, TSLA) and get, per issuer — ST0x (wtNVDA) and Coinbase tokenized stocks (NVDAc, B20) — the genuine contract verified against the issuer's own registry, live price, premium/discount vs the real share in bps, pool depth and 24h volume, the ST0x-vs-Coinbase spread, any direct cross-issuer pool, and every impostor token using the same symbol. xStocks flagged as not on Base.
TradingLiveeip155:8453Exactvia cdp
Tokenized-stocksBaseCoinbaseSt0xCross-issuer
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 6 snapshots so far.
$0.27
Verified settled volume
33 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-18 08:32Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xbC3A8eAc0601F717E803935cABEDeE8EDB7713C4The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"how": "Retry GET /tokenized-equities/same-stock/<ticker> with an x402 `payment` header (scheme exact, USDC on Base or Solana).",
"menu": "https://x402-accelerometer-feed.fly.dev/",
"error": "payment_required",
"price": "$0.05",
"health": "https://x402-accelerometer-feed.fly.dev/health",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xbC3A8eAc0601F717E803935cABEDeE8EDB7713C4",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
},
"payTo": "5dBE1vqMVJCbxpBv9kw9nQJguUhYXk5mRGVfsxEF9cc4",
"amount": "50000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"preview": "https://x402-accelerometer-feed.fly.dev/preview",
"networks": [
"eip155:8453",
"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
],
"receipts": "https://x402-accelerometer-feed.fly.dev/receipt/{id}",
"resource": {
"url": "https://x402-accelerometer-feed.fly.dev/tokenized-equities/same-stock/:ticker",
"mimeType": "application/json"
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.05USDC≈ $0.05 USD
on Base · exact scheme
Pay 0.05 USDC on Base to 0xbC3A…713C4. The signed payment is good for 5 minutes.
- Paid to
- 0xbC3A…713C4
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 50000 smallest units
50000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 5dBE1v…F9cc4
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xbC3A8eAc0601F717E803935cABEDeE8EDB7713C4",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
},
"payTo": "5dBE1vqMVJCbxpBv9kw9nQJguUhYXk5mRGVfsxEF9cc4",
"amount": "50000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"ticker": ":ticker"
},
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"kind": "same_stock_base",
"read": "NVDA on Base: wtNVDA 176.9 (+0.28% vs NVDA, $12480 liquidity); NVDAc 176.31 (at par vs NVDA, $2945001 liquidity); ST0x vs Coinbase spread +0.24%; 1 impostor token using the same symbol (deepest $633548). xStocks: not on Base.",
"as_of": "2026-09-18T08:30:00.000Z",
"chain": "base",
"ticker": "NVDA",
"issuers": [
{
"note": null,
"issuer": "ST0x",
"paused": null,
"symbol": "wtNVDA",
"address": "0xFb5B41acdbA20a3230F84BE995173CFb98b8D6E7",
"genuine": {
"by": "ST0x registry (github.com/ST0x-Technology/st0x.registry)",
"verified": true
},
"standard": "ERC-4626 wrapper over ERC-20 (debt instrument with Right of Exchange, S01 Issuer GmbH)",
"available": true,
"best_pool": {
"dex": "aerodrome",
"pair": "0x…",
"quote": "USDC",
"price_usd": 176.9,
"liquidity_usd": 8712.5,
"volume_24h_usd": 1450.2
},
"price_usd": 176.9,
"multiplier": null,
"premium_bps": 37.4,
"wrapper_rate": 1.000959,
"volume_24h_usd": 2100.4,
"raindex_last_trade": {
"at": "2026-09-17T19:58:10.000Z",
"qty": 2.5,
"age_s": 45110,
"price_usdc": 176.55
},
"liquidity_total_usd": 12480.1,
"premium_rate_adjusted_bps": 27.8
},
{
"note": null,
"issuer": "Coinbase",
"paused": false,
"symbol": "NVDAc",
"address": "0xb20000000000000000000078ee7ce2fE4908108C",
"genuine": {
"by": "Coinbase tokenized-stocks list + OracleRegistry getOracleParams",
"verified": true
},
"standard": "B20 (ERC-20 extension; direct claim on a share held by Alpaca, ADGM-supervised)",
"available": true,
"best_pool": {
"dex": "aerodrome",
"pair": "0x…",
"quote": "USDC",
"price_usd": 176.31,
"liquidity_usd": 2310721.3,
"volume_24h_usd": 412000.8
},
"price_usd": 176.31,
"multiplier": 1,
"premium_bps": 4,
"wrapper_rate": null,
"volume_24h_usd": 480210.2,
"raindex_last_trade": null,
"liquidity_total_usd": 2945000.5,
"premium_rate_adjusted_bps": 4
},
{
"note": "xStocks (Backed) does not issue on Base: Ethereum, Arbitrum, Mantle, Ink, Solana, TON only — any 'xStock' on Base is not theirs",
"issuer": "xStocks",
"paused": null,
"symbol": null,
"address": null,
"genuine": null,
"standard": null,
"available": false,
"best_pool": null,
"price_usd": null,
"multiplier": null,
"premium_bps": null,
"wrapper_rate": null,
"volume_24h_usd": null,
"raindex_last_trade": null,
"liquidity_total_usd": null,
"premium_rate_adjusted_bps": null
}
],
"sources": {
"quote": "https://query1.finance.yahoo.com/v8/finance/chart/NVDA?range=1d&interval=1d",
"dexscreener": "https://api.dexscreener.com",
"coinbase_list": "https://docs.base.org/build-on-base/integrate-defi/list-tokenized-stocks",
"st0x_registry": "https://github.com/ST0x-Technology/st0x.registry",
"xstocks_chains": "https://docs.xstocks.fi/developers",
"b20_oracle_registry": "https://basescan.org/address/0x3f3E8cf41cdd3b1D118c16471aB0113DfDDd5CaD"
},
"impostors": [
{
"dex": "uniswap",
"name": "NVIDIA Curenncy",
"reason": "symbol NVDAc but not the issuer's registered contract",
"symbol": "NVDAc",
"address": "0x345c77838a623A2128a00509f977A973CE2f5f43",
"liquidity_usd": 633547.6
}
],
"disclaimer": "Public blockchain and reference data about tokenized securities. Not investment advice, not an offer, no order routing or execution. Eligibility to hold ST0x tokens is set by the issuer's prospectus.",
"underlying": {
"age_s": 45000,
"price": 176.24,
"source": "yahoo",
"symbol": "NVDA",
"session": "closed",
"currency": "USD",
"exchange": "NMS",
"leg_used": "regular",
"price_at": "2026-09-17T20:00:01.000Z"
},
"cross_issuer": {
"direct_pools": [
{
"dex": "hydrex",
"pair": "0x…",
"other": "NVDAc",
"price_ratio": 1.0004,
"liquidity_usd": 1850.3,
"other_address": "0xb20000000000000000000078ee7ce2fE4908108C"
}
],
"deepest_issuer": "Coinbase",
"st0x_vs_coinbase_bps": 23.8
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"pathParams": {
"type": "object",
"required": [
"ticker"
],
"properties": {
"ticker": {
"type": "string",
"description": "stock ticker (NVDA, AAPL, TSLA); ST0x (wtNVDA) or Coinbase (NVDAc) symbols also accepted"
}
}
},
"queryParams": {
"type": "object",
"properties": {}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"kind": {
"type": "string"
},
"read": {
"type": "string"
},
"as_of": {
"type": "string"
},
"chain": {
"type": "string"
},
"ticker": {
"type": "string"
},
"issuers": {
"type": "array",
"items": {
"type": "object",
"properties": {
"note": {
"type": [
"string",
"null"
]
},
"issuer": {
"type": "string"
},
"paused": {
"type": [
"boolean",
"null"
]
},
"symbol": {
"type": [
"string",
"null"
]
},
"address": {
"type": [
"string",
"null"
]
},
"genuine": {
"type": [
"object",
"null"
],
"properties": {
"by": {
"type": "string"
},
"verified": {
"type": "boolean"
}
}
},
"standard": {
"type": [
"string",
"null"
]
},
"available": {
"type": "boolean"
},
"best_pool": {
"type": [
"object",
"null"
]
},
"price_usd": {
"type": [
"number",
"null"
]
},
"multiplier": {
"type": [
"number",
"null"
]
},
"premium_bps": {
"type": [
"number",
"null"
]
},
"wrapper_rate": {
"type": [
"number",
"null"
]
},
"volume_24h_usd": {
"type": [
"number",
"null"
]
},
"raindex_last_trade": {
"type": [
"object",
"null"
]
},
"liquidity_total_usd": {
"type": [
"number",
"null"
]
},
"premium_rate_adjusted_bps": {
"type": [
"number",
"null"
]
}
}
}
},
"sources": {
"type": "object"
},
"impostors": {
"type": "array",
"items": {
"type": "object",
"properties": {
"dex": {
"type": "string"
},
"name": {
"type": [
"string",
"null"
]
},
"reason": {
"type": "string"
},
"symbol": {
"type": "string"
},
"address": {
"type": "string"
},
"liquidity_usd": {
"type": [
"number",
"null"
]
}
}
}
},
"disclaimer": {
"type": "string"
},
"underlying": {
"type": [
"object",
"null"
]
},
"cross_issuer": {
"type": "object",
"properties": {
"direct_pools": {
"type": "array"
},
"deepest_issuer": {
"type": [
"string",
"null"
]
},
"st0x_vs_coinbase_bps": {
"type": [
"number",
"null"
]
}
}
}
}
}
}
}
}
},
"routeTemplate": "/tokenized-equities/same-stock/:ticker"
}
}Provenance
- Seen in the source catalog
- 2026-09-18 08:32Z
- Last indexed by Roundhouse
- 2026-09-24 07:30Z
- Last enriched (probe, favicon, geo)
- 2026-09-18 10:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 6 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Tokenized Stocks on Base and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Tokenized%20Stocks%20on%20Base' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://x402-accelerometer-feed.fly.dev/tokenized-equities/same-stock/:ticker, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.