preflight derived

api.spendpreflight.comMarket data derived

POST https://api.spendpreflight.com/v1/preflight

passlisted in Coinbasecounted above 0% of Market data

0.02 USDC

per call, as the listing declares it on eip155:8453

Compare with another Every figure as JSON Cite this page

the price, as of 2026-10-13 14:08 UTC · method · pinnable

Validation state: pass; as of 2026-10-30 09:48 UTC · method · pinnable · sweep daily-2026-10-30
Uptime, 7 / 30 / 90 days: 100% / 100% / 100%; as of 2026-10-30 09:48 UTC · method · pinnable · 5 of 5 in 7d, 20 of 20 in 30d, 20 of 20 in 90d
Calls, trailing 30 days: 1; as of 2026-10-13 14:08 UTC · method · pinnable
Unique payers, trailing 30 days: 1; as of 2026-10-13 14:08 UTC · method · pinnable
Last called: 2026-10-08 08:17 UTC; as of 2026-10-13 14:08 UTC · method · pinnable
First observed by TOLLderived: 2026-10-08; as of 2026-10-08 13:26 UTC · method · pinnable · observation began 10 September 2026; listings that predate it show that date
Pricederived: 0.02 USDC; as of 2026-10-13 14:08 UTC · method · pinnable · on eip155:8453
Networks: 1; as of 2026-10-13 14:08 UTC · method · pinnable

Counters

15 observations, 1 of them a change, fewer than the 3 a trace needs

How big is this endpoint among the ones like it?

Calls counted in the trailing thirty days across the 8,872 endpoints in Market data that carry counters, binned on a logarithmic scale because the range runs over five orders of magnitude. The marked bin is this endpoint, at 1: 6,656 in the category are counted higher and 2,215 lower.

No trace is drawn of this endpoint’s own volume. Its counters have changed 1 time across 15 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.

In words

api.spendpreflight.com serves preflight, a POST endpoint that TOLL places in market data, listed in the Coinbase registry.

A call to preflight costs 0.02 USDC on Base, as declared.

Callers of preflight supply a json body with the fields rules, context and challenge.

The declared response carries reasons, receipt and decision.

preflight answered the sweep of 2026-10-30 with a valid 402, as at every sweep since 2026-10-08.

api.spendpreflight.com lists no other endpoint.

The registry counted one call from one payer in the trailing 30 days.

preflight was last called 5 days before the snapshot.

Closest in price to preflight within market data: q verdict resource at www.ax1.vc and activities smarttraders smartmoney at x402.sniperx.fun.

preflight is priced above 72% of comparable listings in market data.

The wallet paid by preflight is the payee of 4 endpoints across 2 hosts.

Seller tags: agent-payments, x402, spend-control and preflight.

Exactly this price appears on 811 other listings in market data.

Payment options as declared

the payment options, as of 2026-10-13 14:08 UTC · method · pinnable

Every payment option declared on this listing
registry	network	asset	amount	scheme	pay to
Coinbase	eip155:8453	USDC	0.02 USDC	exact	0xBf4164…0a1c58

Preflight checks at the last sweep

the checks, as of 2026-10-30 09:48 UTC · method · pinnableendpoint answered HTTP 402

No named check failed.

Validation history, 90 days

Every sweep that observed this endpoint, newest first.

Validation observations over the last 90 days
observed, UTC	state	sweep
2026-10-30 09:48 UTC	pass	daily-2026-10-30
2026-10-29 09:28 UTC	pass	daily-2026-10-29
2026-10-28 09:50 UTC	pass	daily-2026-10-28
2026-10-27 09:32 UTC	pass	daily-2026-10-27
2026-10-26 15:58 UTC	pass	daily-2026-10-26
2026-10-23 09:48 UTC	pass	daily-2026-10-23
2026-10-21 12:17 UTC	pass	daily-2026-10-21
2026-10-20 11:56 UTC	pass	daily-2026-10-20
2026-10-19 09:36 UTC	pass	daily-2026-10-19
2026-10-18 11:23 UTC	pass	daily-2026-10-18
2026-10-16 07:34 UTC	pass	daily-2026-10-16
2026-10-15 09:23 UTC	pass	daily-2026-10-15
2026-10-14 07:22 UTC	pass	daily-2026-10-14
2026-10-13 12:09 UTC	pass	daily-2026-10-13
2026-10-12 09:35 UTC	pass	daily-2026-10-12
2026-10-11 08:13 UTC	pass	daily-2026-10-11
2026-10-10 16:21 UTC	pass	daily-2026-10-10
2026-10-09 09:13 UTC	pass	daily-2026-10-09
2026-10-08 13:37 UTC	pass	daily-2026-10-08
2026-10-08 13:32 UTC	pass	new-after-daily-2026-10-08

Registry presence

Presence in a registry, not liveness of the service (method). Newest first.

2026-10-08 13:26 UTClisted in Coinbase

Declared input and output, as listed

From the registry record, not validated by TOLL.the declared schema, as of 2026-10-08 08:17 UTC · method · live

The input and output block

{
  "input": {
    "body": {
      "rules": {
        "hold_above_usd": 0.25,
        "new_domain_days": 30,
        "max_per_payment_usd": 1
      },
      "context": {
        "spent_today_usd": 0
      },
      "challenge": {
        "accepts": [
          {
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "payTo": "0x0000000000000000000000000000000000000001",
            "amount": "10000",
            "scheme": "exact",
            "network": "eip155:8453"
          }
        ],
        "resource": {
          "url": "https://api.example.com/data"
        },
        "x402Version": 2
      }
    },
    "type": "http",
    "method": "POST",
    "bodyType": "json"
  },
  "output": {
    "type": "json",
    "example": {
      "reasons": [
        "allow: all rules passed"
      ],
      "receipt": {
        "id": "…",
        "ts": "…",
        "decision": "allow",
        "input_sha256": "…"
      },
      "decision": "allow"
    }
  }
}

What the listing says

Spend preflight for AI agents. Send the x402 PaymentRequired body (v1 or v2) you received, or a cart, plus optional rules (per-payment max, hold threshold, daily cap, allowlists, new-domain days). Returns allow|hold|block with reasons, the cheapest acceptable payment option, and a receipt id. Read-only: never signs, settles, or holds funds. Use before every payment.

the record, 2026-10-08 08:17 UTC · method · pinnable

As declared

POST
eip155:8453
USDC
exact

Every tag is a field on the listing, not a keyword TOLL assigned.

Who is paid

0xBf4164…0a1c58

Takes payment for 4 endpoints on 2 hosts.

Among Market data

counted above0%

of 8,872 that carry counters

cheaper than72%

of 8,851 with a comparable price

9,140 endpoints are in this category. 811 declare exactly this price.

the comparison, 2026-10-13 14:08 UTC · method · live

Nearest on price

q verdict resourcewww.ax1.vc0.02 USDCfail
activities smarttraders smartmoneyx402.sniperx.fun0.02 USDCpass
stonk alerts invokeapi.solenrich.com0.02 USDCpass
grouped dailyx402stock.xyz0.02 USDCpass
analytics makersapi.onesource.io0.02 USDCpass

Same category, nearest declared price, one per payee wallet (method). the list, 2026-10-13 14:08 UTC · method · live

Elsewhere in the record

Cite this page

The pinned URL below renders this page from the snapshot of 2026-10-13 14:08 UTC and does not change; the live page does, every six hours. Data reuse is under CC BY 4.0 (terms).

Plain text

TOLL, "preflight on api.spendpreflight.com", snapshot of 2026-10-13 14:08 UTC. https://tollindex.com/e/api-spendpreflight-com-v1-preflight-8e38cf/at/2026-10-13T14-08Z. Accessed [access date].

BibTeX

@misc{toll-e-api-spendpreflight-com-v1-preflight-8e38cf-2026-10-13T14-08Z,
  author = {TOLL},
  title = {preflight on api.spendpreflight.com},
  howpublished = {\url{https://tollindex.com/e/api-spendpreflight-com-v1-preflight-8e38cf/at/2026-10-13T14-08Z}},
  year = {2026},
  month = {10},
  note = {Pinned view of the snapshot of 2026-10-13 14:08 UTC. Accessed [access date].}
}

Reports and replies about this endpoint

None yet. Anything submitted through the form below is published here with its outcome.

Report an error about preflight, or reply as the named seller