tx preflight derived
txguard.schemasure.comMarket dataderived
POST https://txguard.schemasure.com/v1/tx/preflight
passlisted in Coinbasecounted above 95% of Market data
0.01 USDC
per call, as the listing declares it on eip155:
- Validation state
- pass
- Uptime, 7 / 30 / 90 days
- 100% / 100% / 100%
- Calls, trailing 30 days
- 32
- Unique payers, trailing 30 days
- 3
- Last called
- 2026-09-15 07:40 UTC
- First observed by TOLLderived
- 2026-09-10
- Pricederived
- 0.01 USDC
- Networks
- 1
How big is this endpoint among the ones like it?
No trace is drawn of this endpoint’s own volume. Its counters have changed 2 times across 28 observations, and 3 changes are the fewest this site will draw a trace through, because two points and a guess are not a series. Every observation is in the JSON.
At txguard.schemasure.com, tx preflight takes POST requests, is listed in the Coinbase registry, and falls under market data by TOLL's rules.
Per call, tx preflight declares 0.01 USDC on Base.
tx preflight takes a json body with the fields unsigned_tx and expected_quote.
A response from tx preflight, as declared, includes ok, result, verdict, evidence, warnings, confidence and 2 others.
tx preflight answered the sweep of 2026-09-15 with a valid 402, as at every sweep since 2026-09-11.
tx preflight is the only listed endpoint on txguard.schemasure.com.
The registry's counters give tx preflight 32 calls and 3 unique payers over 30 days, about 11 calls per payer.
tx preflight was last called on the day of the snapshot.
Closest in price to tx preflight within market data: price at svm402.com and address current balance at api.nansen.ai.
tx preflight is priced above 37% of comparable listings in market data.
Across market data, 5,172 endpoints carry counters and tx preflight out-counts 95% of them.
6 listed endpoints across 5 hosts pay to the same wallet.
The seller's tags on tx preflight are base, transaction, preflight and x402.
Exactly this price appears on 1,309 other listings in market data.
the payment options, as of 2026-09-15 16:57 UTC · method · pinnable
| registry | network | asset | amount | scheme | pay to |
|---|---|---|---|---|---|
| Coinbase | eip155: | USDC | 0.01 USDC | exact | 0x9876af…612690 |
the checks, as of 2026-09-15 04:46 UTC · method · pinnableendpoint answered HTTP 402
No named check failed.
Every sweep that observed this endpoint, newest first.
| observed, UTC | state | failed checks | sweep |
|---|---|---|---|
| 2026-09-15 04:46 UTC | pass | 0 | daily-2026-09-15 |
| 2026-09-14 04:42 UTC | pass | 0 | daily-2026-09-14 |
| 2026-09-13 04:39 UTC | pass | 0 | daily-2026-09-13 |
| 2026-09-12 06:56 UTC | pass | 0 | daily-2026-09-12 |
| 2026-09-11 10:32 UTC | pass | 0 | daily-2026-09-11 |
Presence in a registry, not liveness of the service (method). Newest first.
- listed in Coinbase
From the registry record, not validated by TOLL.the declared schema, as of 2026-09-15 07:40 UTC · method · live
The input and output block
{
"input": {
"body": {
"unsigned_tx": {
"to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"data": "0xa9059cbb0000000000000000000000005d3e1a9b7c2f4e8a0b6d3c5f9e1a7b4d2c8f0a6e0000000000000000000000000000000000000000000000000000000000002710",
"from": "0x9F2C5E4A8db1C3a7E6B0d4f8C1E2a5b7D9C0e3F4",
"value": "0"
},
"expected_quote": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1a2B3c4D5E6F7a8B9c0D1e2F3A4b5C6d7E8F9a0b",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"result": {
"rpc": {
"endpoints": [],
"reachable": null,
"configured": false
},
"chain": "eip155:8453",
"proxy": {
"kind": "unknown",
"admin": null,
"beacon": null,
"detail": "no RPC endpoint is configured, so no slot could be read",
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"upgradeable": null,
"slots_probed": [],
"implementation": null
},
"intent": {
"args": [
{
"name": "to",
"type": "address",
"value": "0x5D3e1a9b7c2f4E8A0b6d3c5F9E1A7b4D2C8f0a6E"
},
{
"name": "amount",
"type": "uint256",
"value": "10000"
}
],
"kind": "erc20_transfer",
"calls": [],
"depth": 0,
"target": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"summary": "Transfer 10000 base units of token 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 to 0x5D3e1a9b7c2f4E8A0b6d3c5F9E1A7b4D2C8f0a6E.",
"selector": "0xa9059cbb",
"standard": "erc20",
"signature": "transfer(address,uint256)",
"truncated": false,
"value_wei": "0",
"decode_source": "bundled-abi",
"function_name": "transfer"
},
"spender": {
"detail": "this transaction grants no allowance, so it has no spender",
"address": null,
"is_contract": null
},
"approvals": [],
"simulation": {
"detail": "simulation was not requested; send simulate: true to run one",
"status": "not_requested",
"gas_used": null,
"requested": false,
"block_number": null,
"asset_changes": []
},
"unresolved": [
"proxy status of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is unknown: no RPC endpoint is configured, so no slot could be read"
],
"input_shape": "unsigned_tx",
"permit_scope": null,
"denylist_hits": [],
"quote_comparison": {
"detail": "2 of 3 comparable fields match",
"fields": [
{
"field": "payTo",
"actual": "0x5D3e1a9b7c2f4E8A0b6d3c5F9E1A7b4D2C8f0a6E",
"matches": false,
"expected": "0x1a2B3c4D5E6F7a8B9c0D1e2F3A4b5C6d7E8F9a0b"
},
{
"field": "amount",
"actual": "10000",
"matches": true,
"expected": "10000"
},
{
"field": "asset",
"actual": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"matches": true,
"expected": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
{
"field": "chainId",
"actual": null,
"matches": null,
"expected": "8453"
},
{
"field": "extra.name",
"actual": null,
"matches": null,
"expected": "USD Coin"
},
{
"field": "extra.version",
"actual": null,
"matches": null,
"expected": "2"
}
],
"matches": false,
"present": true
},
"expected_transfers": [
{
"to": "0x5D3e1a9b7c2f4E8A0b6d3c5F9E1A7b4D2C8f0a6E",
"from": "0x9f2C5E4a8DB1C3A7e6b0d4f8C1e2A5b7d9c0E3f4",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"source": "decode",
"token_id": null,
"asset_kind": "erc20"
}
],
"authorization_checks": [],
"candidate_signatures": []
},
"verdict": "block",
"evidence": [
{
"code": "RECIPIENT_MISMATCH",
"data": {
"field": "payTo",
"actual": "0x5D3e1a9b7c2f4E8A0b6d3c5F9E1A7b4D2C8f0a6E",
"expected": "0x1a2B3c4D5E6F7a8B9c0D1e2F3A4b5C6d7E8F9a0b"
},
"detail": "Pays 0x5D3e1a9b7c2f4E8A0b6d3c5F9E1A7b4D2C8f0a6E, but the quote names 0x1a2B3c4D5E6F7a8B9c0D1e2F3A4b5C6d7E8F9a0b. Signing this pays someone other than the party you are buying from.",
"source": "quote-comparison",
"severity": "critical"
},
{
"code": "RPC_UNAVAILABLE",
"detail": "No Base RPC endpoint is configured, so chain-dependent fields are unknown rather than assumed. See result.unresolved.",
"source": "rpc",
"severity": "medium"
}
],
"warnings": [],
"confidence": 1,
"risk_codes": [
"RECIPIENT_MISMATCH",
"RPC_UNAVAILABLE"
],
"request_hash": "sha256:6d5c717eb5eede165dada2645ad0944430ff492739cf58d0c2dad2b812f0ddb4",
"data_versions": {
"chain": "eip155:8453",
"policy": "2026-08-03",
"denylist": "2026-08-03.1",
"abi_packs": "2026-08-03.1",
"signature_index": "2026-08-03.1"
},
"policy_version": "2026-08-03"
}
}
}Cite this page
The pinned URL below renders this page from the snapshot of 2026-09-15 16:57 UTC and does not change; the live page does, every six hours. Data reuse is under CC BY 4.0 (terms).
Plain text
TOLL, "tx preflight on txguard.schemasure.com", snapshot of 2026-09-15 16:57 UTC. https://tollindex.com/e/txguard-schemasure-com-v1-tx-preflight-54bb07/at/2026-09-15T16-57Z. Accessed [access date].
BibTeX
@misc{toll-e-txguard-schemasure-com-v1-tx-preflight-54bb07-2026-09-15T16-57Z,
author = {TOLL},
title = {tx preflight on txguard.schemasure.com},
howpublished = {\url{https://tollindex.com/e/txguard-schemasure-com-v1-tx-preflight-54bb07/at/2026-09-15T16-57Z}},
year = {2026},
month = {9},
note = {Pinned view of the snapshot of 2026-09-15 16:57 UTC. Accessed [access date].}
}None yet. Anything submitted through the form below is published here with its outcome.