Roundhouse
Onchain Data

Gas price

Read the current gas price for a chain. Priced per read.

Spot price
$0.0038per read
call-weighted across 231 of 268 priced endpoints
Spread
100×
cheapest to dearest
Providers
139
155 hosts
Endpoints
277
236 answered last probe
Where the offers sitLog scale. The shaded band is the middle half of the market, $0.0020 to $0.010.
$0.0010$0.100

Every supplier below carries its index against that rate: 100 is spot, 40 is 60% below it, 310 is 3.1× it. Spot is weighted by how often each endpoint is called, so one wallet listing forty near-identical endpoints cannot move it on listings alone. The cheapest offer here is $0.0010 and the dearest $0.100.

Canonical request
chainstringCAIP-2 chain id.
Canonical response
chainstringThe chain read.
base_fee_gweinumberCurrent base fee in gwei.
priority_fee_gwei?numberSuggested priority fee in gwei.
as_ofstringISO 8601 observation time.

542 endpoints offering this capability, from 139 wallets

EndpointIndexLast called
onchain-gas
payai.agentstools.dev/gas$0.0050133——Unprobed—
seeker.4itools.store
seeker.4itools.store/paid/chain.gas$0.005013322Live5d ago
Farm Distress Mesh
trade-production-180b.up.railway.app/gas$0.0050133323Live55d ago
onchain-gas
webtools402.176-109-107-191.sslip.io/gas$0.005013341Live136d ago
Gas Cost Oracle
work-1-nrumcuplsrigglax.prod-runtime.all-hands.dev/api/gas-oracle$0.0050133——Live—
x402-seller-0ay3.onrender.com
x402-seller-0ay3.onrender.com/api/chain/gas$0.005013311Live32d ago
AgentFeed
x402.ochinimus.app/api/base-gas$0.005013353Live11d ago
api.x402node.dev
api.x402node.dev/chain/gas-oracle$0.006015910621Livetoday
api.x402node.dev
api.x402node.dev/chain/multi-gas$0.006015922Live5d ago
Skill: Gas optimizer
agent402.tools/api/skill/gas-optimizer$0.007018681Live13d ago
Fee & Gas Tracker
amanchain-relay.gitajhd.workers.dev/api/x402/aman-gas-tracker$0.0075198111Livetoday
x402-api-blond.vercel.app
x402-api-blond.vercel.app/eth/gas$0.010265——Live—
Base Chain Status
402.com.tr/api/x402/chain-status$0.01026532Live13d ago
Gas Oracle
402.com.tr/api/x402/gas-oracle$0.01026564Live13d ago
Multi-Chain Gas Compare
402.com.tr/api/x402/multi-chain-gas$0.01026552Live23d ago
47620 Base Data API
47620.xyz/x/base/gas$0.01026511Livetoday
47620 Polygon Data API
47620.xyz/x/polygon/gas$0.01026533Live7d ago
aether-x402.vercel.app/v1/base/gas$0.01026522Live27d ago
Estimate gas, Arbitrum
agent-data-tools.revmesh2074.workers.dev/arb/estimate-gas$0.01026562Live3d ago
Arbitrum gas history, gas price
agent-data-tools.revmesh2074.workers.dev/arb/gas-history$0.01026562Live3d ago
Avalanche block number
agent-data-tools.revmesh2074.workers.dev/avax/block$0.01026552Live3d ago
Estimate gas, Avalanche
agent-data-tools.revmesh2074.workers.dev/avax/estimate-gas$0.01026552Live3d ago
Avalanche gas price
agent-data-tools.revmesh2074.workers.dev/avax/gas$0.01026552Live3d ago
Avalanche gas history, gas price
agent-data-tools.revmesh2074.workers.dev/avax/gas-history$0.01026552Live3d ago
Base gas history, gas price
agent-data-tools.revmesh2074.workers.dev/base/gas-history$0.01026572Live3d ago

Reading this table

Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will pick the best provider of this capability over the free read API. No key, no account.

GET roundhouseai.io/unified.json?capability=gas-price

Open skill.md
Show the prompt
Using Roundhouse, compare every x402 provider of Gas price and pick one for me.
Weigh the price per unit against whether the endpoint answered when last probed, and say
what the cheapest option would cost against the median.

curl -s 'https://roundhouseai.io/unified.json?capability=gas-price'

The canonical request and response in that document are the shape every provider is
mapped onto. Before paying, check the provider's record and read the live 402:
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet on the offer you choose>'

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.