transaction gas preflight derived

api.agentmercantile.comMarket data derived

POST https://api.agentmercantile.com/v1/transaction-gas-preflight

passlisted in Coinbase#5 by calls of 7 on this host

0.005 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 2026-09-15 21:20 UTC · method · pinnable

Validation state: pass; as of 2026-09-15 06:17 UTC · method · pinnable · sweep daily-2026-09-15
Uptime, 7 / 30 / 90 days: 100% / 100% / 100%; as of 2026-09-15 06:17 UTC · method · pinnable · 4 of 4 in 7d, 4 of 4 in 30d, 4 of 4 in 90d
Calls, trailing 30 days: 1; as of 2026-09-15 21:20 UTC · method · pinnable
Unique payers, trailing 30 days: 1; as of 2026-09-15 21:20 UTC · method · pinnable
Last called: 2026-09-12 14:08 UTC; as of 2026-09-15 21:20 UTC · method · pinnable
First observed by TOLLderived: 2026-09-12; as of 2026-09-12 14:15 UTC · method · pinnable · observation began 10 September 2026; listings that predate it show that date
Pricederived: 0.005 USDC; as of 2026-09-15 21:20 UTC · method · pinnable · on eip155:8453
Networks: 1; as of 2026-09-15 21:20 UTC · method · pinnable

Counters

14 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 5,288 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: 3,175 in the category are counted higher and 2,112 lower.

No trace is drawn of this endpoint’s own volume. Its counters have changed 1 time across 14 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

transaction gas preflight first appeared in TOLL's pulls on 2026-09-12.

At api.agentmercantile.com, transaction gas preflight takes POST requests, is listed in the Coinbase registry, and falls under market data by TOLL's rules.

A call to transaction gas preflight costs 0.005 USDC on Base, as declared.

Callers of transaction gas preflight supply a json body with the fields to, data, chain and value_wei.

transaction gas preflight answered the sweep of 2026-09-15 with a valid 402, as at every sweep since 2026-09-12.

A response from transaction gas preflight, as declared, includes chain, status, machine, fee_history, limitations, gas_estimate and 2 others.

Of api.agentmercantile.com's 7 listings, transaction gas preflight ranks tied 5th by calls with 2 others.

Of the calls counted across api.agentmercantile.com, transaction gas preflight takes 4%.

transaction gas preflight drew a single call from a single payer in the trailing 30 days.

The last call to transaction gas preflight came 3 days before the snapshot, 2026-09-12.

Closest in price to transaction gas preflight within market data: stonk yield invoke at api.solenrich.com and gas at base-gas-x402-production.up.railway.app.

transaction gas preflight is priced above 24% of comparable listings in market data.

The wallet paid by transaction gas preflight is the payee of 7 endpoints on one host.

Seller tags: transaction-gas, gas-estimate, fee-history and unsigned-preflight.

The price of transaction gas preflight is declared by 483 other listings in market data too.

Payment options as declared

the payment options, as of 2026-09-15 21:20 UTC · method · pinnable

Every payment option declared on this listing
registry	network	asset	amount	scheme	pay to
Coinbase	eip155:8453	USDC	0.005 USDC	exact	0xdb7b2b…306e1e

Preflight checks at the last sweep

the checks, as of 2026-09-15 06:17 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
2026-09-15 06:17 UTC	pass	daily-2026-09-15
2026-09-14 05:48 UTC	pass	daily-2026-09-14
2026-09-13 05:41 UTC	pass	daily-2026-09-13
2026-09-12 14:17 UTC	pass	new-2026-09-12T14-16-56-365Z

Registry presence

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

2026-09-12 14:15 UTClisted in Coinbase

Declared input and output, as listed

From the registry record, not validated by TOLL.the declared schema, as of 2026-09-12 14:08 UTC · method · live

The input and output block

{
  "input": {
    "body": {
      "to": "0x0000000000000000000000000000000000000001",
      "data": "0x",
      "chain": "eip155:8453",
      "value_wei": "0"
    },
    "type": "http",
    "method": "POST",
    "bodyType": "json"
  },
  "output": {
    "type": "json",
    "example": {
      "chain": {
        "name": "base",
        "caip2": "eip155:8453",
        "chain_id": 8453
      },
      "status": "OK",
      "machine": "VM06",
      "fee_history": {
        "block_count": 5,
        "newest_block": "latest"
      },
      "limitations": [
        "Point-in-time gas evidence, not a guaranteed final cost or total transaction cost."
      ],
      "gas_estimate": {
        "gas_units": "21000"
      },
      "request_shape": {
        "has_from": false,
        "value_nonzero": false,
        "calldata_bytes": 0
      },
      "methodology_version": "transaction-gas-preflight-0.1.0",
      "illustrative_execution_fees": {
        "kind": "illustrative_execution_fee_observations",
        "covers": "l2_execution_fee_only",
        "recommendation": false,
        "guaranteed_final_cost": false
      }
    }
  }
}

What the listing says

Return bounded factual eth_estimateGas units and recent eth_feeHistory execution-fee evidence for one unsigned Ethereum or Base transaction. Not execution, signing, custody, trading, or a guaranteed final cost. Call when you need point-in-time gas units and recent execution-fee context before signing or submitting.

the record, 2026-09-12 14:08 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

0xdb7b2b…306e1e

Takes payment for 7 endpoints on 1 host.

Among Market data

counted above0%

of 5,288 that carry counters

cheaper than24%

of 5,273 with a comparable price

5,329 endpoints are in this category. 483 declare exactly this price.

the comparison, 2026-09-15 21:20 UTC · method · live

Nearest on price

enrich companywin.oneshotagent.com0.005 USDCpass
stonk yield invokeapi.solenrich.com0.005 USDCpass
gasbase-gas-x402-production.up.railway.app0.005 USDCpass
chain erc20 transfersapi.onesource.io0.005 USDCpass
tick latesttick.hugen.tokyo0.005 USDCpass

Same category, nearest declared price, one per payee wallet (method). the list, 2026-09-15 21:20 UTC · method · live

Elsewhere in the record

Cite this page

The pinned URL below renders this page from the snapshot of 2026-09-15 21:20 UTC and does not change; the live page does, every six hours. Data reuse is under CC BY 4.0 (terms).

Plain text

TOLL, "transaction gas preflight on api.agentmercantile.com", snapshot of 2026-09-15 21:20 UTC. https://tollindex.com/e/api-agentmercantile-com-v1-transaction-gas-preflight-b5c512/at/2026-09-15T21-20Z. Accessed [access date].

BibTeX

@misc{toll-e-api-agentmercantile-com-v1-transaction-gas-preflight-b5c512-2026-09-15T21-20Z,
  author = {TOLL},
  title = {transaction gas preflight on api.agentmercantile.com},
  howpublished = {\url{https://tollindex.com/e/api-agentmercantile-com-v1-transaction-gas-preflight-b5c512/at/2026-09-15T21-20Z}},
  year = {2026},
  month = {9},
  note = {Pinned view of the snapshot of 2026-09-15 21:20 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 transaction gas preflight, or reply as the named seller