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Pulse Verity x402 Signed Crypto Price Feed
x402
Pulse Verity x402 Signed Crypto Price Feed is a paid API for AI agents from mcp.thepulse.markets, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).
Returns a cryptographically signed, multi-exchange USD price for a given cryptocurrency ticker, paid per-request in USDC via x402 with no API key required.
Price / call$0.01
Success—
StatusUnknown
How this service works
Signed crypto prices from the Pulse Verity Index, paid per request in USDC with x402, with no account or API key. Each price is a multi-exchange US dollar price signed with ECDSA P-256, and its signature can be checked offline against the public keys Pulse publishes.
Output
A JSON object containing the ticker symbol, USD price as a number and text string, ISO 8601 timestamp, an ECDSA P-256 signature (v1 and v2), a signing key ID, a confidence score (0–1), and a grade (e.g. 'consensus') — all verifiable offline against Pulse's published public keys.
Example use cases
Verifiable trade price audit trail
“Fetch me a cryptographically signed BTC price from Pulse Verity right now — I need the signature and key ID so I can verify the price was correct at execution time for our trade audit log.”
DeFi smart contract price assertion
“Get me the Pulse Verity signed ETH price in USD with its ECDSA signature and timestamp — our on-chain contract needs to verify the price offline before settling.”
Real-time crypto dashboard with trust scores
“Pull the latest Pulse Verity price for SOL including the confidence score and grade — I want to show the consensus multi-exchange price on our dashboard and flag anything below high confidence.”
Technical details
Endpoint
GEThttps://mcp.thepulse.markets/api/index/v1/x402/price?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a cryptographically verifiable, multi-exchange consensus crypto price that can be audited or validated offline without trusting the delivery channel — especially when no persistent API key or account setup is acceptable and pay-per-request micropayment billing in USDC is preferred. It is ideal for audit trails, smart contract price assertions, compliance workflows, or any context where tamper-evidence of the price matters more than raw speed or volume.
Side effects
- Unsupported ticker symbol returns an error — only symbols listed in the Pulse Verity Index are valid
- Payment failure via x402 if the wallet has insufficient USDC or the payment flow is not completed
- Network timeout or service unavailability returns no data
- Stale or unavailable exchange data may lower confidence score or prevent a response
- Invalid query parameter format (e.g. missing symbol) returns a 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"at": "2026-10-17T20:00:00.000Z",
"v2": {
"kid": "<signing key id>",
"sig": "pulse-index-v2",
"canonical": "<the exact signed text>",
"signature": "<base64 signature>"
},
"kid": "<signing key id>",
"sig": "pulse-index-v1",
"grade": "consensus",
"price": 65000.12,
"symbol": "BTC",
"priceText": "65000.12",
"signature": "<base64 signature>",
"confidence": 0.91
}
}Tags
x402
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