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BCS Cross-Chain Transaction Tracker via x402
x402
BCS Cross-Chain Transaction Tracker via x402 is a paid API for AI agents from base-agent-preflight.bytoken2023.workers.dev, paid per call via x402, $0.29/call, status unknown (last checked 2026-09-14).
Looks up cross-chain bridge transaction status and provenance data by transaction hash and bridge protocol label, proxied through an x402 pay-per-call gateway.
Price / call$0.29
Success—
StatusUnknown
How this service works
Machine-payable service intelligence for discovering, verifying, and monitoring identity, risk, authorization, execution-preflight, and evidence APIs before autonomous agents spend.
Output
Returns a JSON object containing the product identifier (bcs-cross-chain-track), upstream service name (blockchainsecurity-atlantis), upstream response data with transaction details, and metadata including a request ID. Credit cost and remaining credit fields are also included in the upstream headers.
Example use cases
Verify stuck Axelar bridge transfer
“I sent funds via the Axelar bridge and I'm not sure if it went through — can you check the status of transaction hash 0x1a2b3c4d5e6f7890abcdef1234567890abcdef12 on the axelar protocol for me?”
Audit cross-chain DeFi transaction
“I need to audit a cross-chain transfer for our records — please look up tx hash 0xdeadbeef11223344556677889900aabbccddeeff on the across bridge and return the full transaction data.”
Debug failed Wormhole transfer
“Something went wrong with my Wormhole bridge transfer — can you pull up the details for tx hash 0x9988776655443322110099887766554433221100 using the wormhole label so I can figure out what happened?”
Technical details
Endpoint
GEThttps://base-agent-preflight.bytoken2023.workers.dev/v1/x402/bcs/cross-chainWhen to prefer
Use this endpoint when you need to look up the status or provenance of a specific cross-chain bridge transaction by its source hash and know which bridge protocol was used (e.g. across, axelar, celer, wormhole). It is best suited for point-in-time transaction lookups rather than continuous monitoring. Prefer this over generic block explorers when you need structured, programmatic data from BlockchainSecurity Atlantis via a pay-per-call x402 interface.
Side effects
- Invalid or malformed txhash (must match pattern ^[A-Za-z0-9:_-]{16,160}$) returns a validation error
- Unknown or unsupported bridge protocol label causes upstream lookup failure
- Transaction hash not found in the upstream BlockchainSecurity Atlantis database returns empty data
- Payment failure or insufficient USDC balance blocks the x402 gateway from proxying the request
- Network timeout from the upstream blockchainsecurity-atlantis service
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"product": "bcs-cross-chain-track",
"upstream_headers": {
"request_id": "example-request-id",
"credit_cost": null,
"credit_remaining": null
},
"upstream_service": "blockchainsecurity-atlantis",
"upstream_response": {
"data": {},
"meta": {
"request_id": "example-request-id"
}
}
}
}Tags
x402
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