txpreflight

Name: txpreflight service
Creator: Agent GDP
License: https://creativecommons.org/licenses/by/4.0/

Unclassifiedx402 base

The service's listing describes it this way: Base agent toolbox. /preflight simulates a tx (revert reason, gas, EIP-1559 fees in ETH and USD) before you sign. /verify reads a receipt and proves a USDC transfer settled: confirmations, amount, sender, recipient. Website

A service is a tool an AI agent pays to call. txpreflight is listed on this page settling on Base, through x402. 30-day settled volume on this page is $0.23. The listing comes from the service catalog. Open a row for payments, payers, and chains. See Bazaar, agent payment use cases, and the methodology.

FacilitatorsCoinbase

Payee

Methodology · settled volume through 2026-10-27 · catalog Oct 27, 2026, 8:02 PM UTC

Settled volume, payments, payers, average payment, use-case share, and rank
Metric	24h	7d	30d
Volume	$0.09	$0.23	$0.23
Payments	9	23	23
Payers	8	12	12
Avg payment	$0.01	$0.01	$0.01
Share of use case	—	—	—
Rank	#762	#1189	#1392

Payers can be counted more than once when they paid through more than one facilitator.

Settled volume

$0.23

n/a

Payments

Payers

Avg payment

$0.01

volume / payments

Daily volume and buyers

90D 1Y All

Data through Oct 27, 2026. Source: public settlement logs. Methodology

Payers

Buyer concentration

58.3%

Top payer's share of lifetime volume. Not the period selected above.

Repeat buyers

60.0%

Lifetime buyers with more than one payment, divided by all buyers.

Endpoints and prices

Price, network, and asset come from the x402 Bazaar catalog.

Endpoint	Network	Asset	Price	Scheme
https://api.firstmention.uk/s/bizcal-api/day Business-day and public-holiday API for US federal and GB bank holidays.	base	USDC	$0.01	exact
https://api.firstmention.uk/s/txpreflight/verify Base agent toolbox. /preflight simulates a tx (revert reason, gas, EIP-1559 fees in ETH and USD) before you sign. /verify reads a receipt and proves a USDC transfer settled: confirmations, amount, sender, recipient.	base	USDC	$0.01	exact
https://api.firstmention.uk/s/basedue/due Base token due diligence over x402. /report bundles due diligence, cross-venue reference price and position exit cost in ONE $0.01 call. /price now takes up to 10 tokens per $0.01 call for bulk screening. Free /sample on every endpoint.	base	USDC	$0.01	exact
https://api.firstmention.uk/s/domain-intel/dns Trust check for any domain in one call: DNS records, email auth (SPF/DMARC/DKIM), WHOIS registrar and age, plus live HTTP status and TLS certificate issuer/expiry and HSTS. Free /preflight sample and landing page.	base	USDC	$0.01	exact
https://api.firstmention.uk/s/funding-rates/funding Perpetual-futures funding rates and annualized carry for BTC, ETH, SOL and more, from exchange public market-data APIs, in one call. Free /preflight sample.	base	USDC	$0.01	exact
https://api.firstmention.uk/s/fundinglens/rates Perpetual funding rates across 7 venues (Binance, Bybit, OKX, Bitget, Hyperliquid, dYdX, Deribit), normalized to 8h and annualized. Free /sample.	base	USDC	$0.01	exact
https://api.firstmention.uk/s/walletprofile/profile Base wallet activity profile + heuristic risk score + exact-address OFAC SDN sanctions screen (US Treasury list, public data). /profile and /sanctions. Free /sample.	base	USDC	$0.01	exact
https://api.firstmention.uk/s/web-extract/extract Extract clean readable text or markdown from any public web page: title, language, word/paragraph counts and the full article body. Free /preview sample first.	base	USDC	$0.01	exact
https://api.firstmention.uk/s/x402-preflight/check Check any x402 endpoint before you pay it: /check reads its 402 challenge and validates scheme, network, asset, payTo, price and latency. /uptime returns accumulated reliability history; every checked URL is auto-monitored so history compounds. Free board at /monitored.	base	USDC	$0.01	exact
https://api.firstmention.uk/s/x402check/check Pre-flight check any x402 seller URL: fetches the 402 challenge, decodes the payment requirements (scheme, network, asset, price, payTo), flags missing discovery metadata and returns a clear verdict.	base	USDC	$0.01	exact
https://api.firstmention.uk/s/x402index/verdict x402 market intelligence: search ~60k live x402 listings, compare competitor prices, vet an endpoint, and see which tags actually have repeat payers. Free /search, /market, /compare, /demand-map. Paid…[53 more chars, already applied]	base	USDC	$0.01	exact

Facilitators used

Facilitator	Volume	Tx	Share
Coinbasex402	$0.24	24	100.0%

How we count txpreflight

We read settlements directly from each chain's public records and refresh them every few minutes.

Data through 2026-10-27. Source: public settlement logs.

Full methodology → · How we compare with other trackers →

Cite this

APA

Agent GDP. (2026). txpreflight [Data set]. Retrieved October 27, 2026, from https://agentgdp.io/service/api.firstmention.uk.

MLA

"txpreflight." Agent GDP, 27 Oct. 2026, https://agentgdp.io/service/api.firstmention.uk.

BibTeX

@misc{agentgdp_txpreflight_2026,
  author = {{Agent GDP}},
  title = {txpreflight},
  year = {2026},
  url = {https://agentgdp.io/service/api.firstmention.uk},
  note = {Retrieved October 27, 2026. Data through 2026-10-27. Licensed under CC BY 4.0.},
  license = {https://creativecommons.org/licenses/by/4.0/}
}

Plain text

txpreflight: $0.23 settled volume (7d), 23 payments, 12 buyers. Agent GDP, data through 2026-10-27. https://agentgdp.io/service/api.firstmention.uk Retrieved October 27, 2026.

Data from Agent GDP (https://agentgdp.io/service/api.firstmention.uk), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).

Payers on a day can be counted more than once if they paid through more than one facilitator. Growth compares this period with the previous period of the same length. The page link uses the service's site when we have one, and the payee address otherwise.

Volume and payment counts include earlier days. Transaction-level detail available from arc from October 26, 2026, base from October 23, 2026, polygon from October 27, 2026, solana from April 12, 2026, tempo from June 22, 2026.

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HTML

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Cite this

APA

Agent GDP. (2026). Service settled volume [Data set]. Retrieved October 27, 2026, from https://agentgdp.io/service/api.firstmention.uk.

MLA

"Service settled volume." Agent GDP, 27 Oct. 2026, https://agentgdp.io/service/api.firstmention.uk.

BibTeX

@misc{agentgdp_service_settled_volume_2026,
  author = {{Agent GDP}},
  title = {Service settled volume},
  year = {2026},
  url = {https://agentgdp.io/service/api.firstmention.uk},
  note = {Retrieved October 27, 2026. Licensed under CC BY 4.0.},
  license = {https://creativecommons.org/licenses/by/4.0/}
}

Plain text

Service settled volume. Agent GDP. https://agentgdp.io/service/api.firstmention.uk. Retrieved October 27, 2026.

Data from Agent GDP (https://agentgdp.io/service/api.firstmention.uk), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).

Time	Daily settled volume for txpreflight
2026-10-26	$0.14
2026-10-27	$0.10

Time	Daily buyers for txpreflight
2026-10-26	10
2026-10-27	9

Time	Daily settled volume for txpreflight
2026-10-26	$0.14
2026-10-27	$0.10

Time	Daily buyers for txpreflight
2026-10-26	10
2026-10-27	9