Ethereum method

web3_clientVersion

Returns the node software and version behind an endpoint.

cheapCheap for a provider to serve — no state is read, or one key is.Primary specification

How each provider handles it

Provider support for web3_clientVersion on Ethereum
Provider	Status	Success	Median	Worst p95	Incidents	Samples
Tenderly	Supported	100.0%	13 ms	28 ms	none	15
Cloudflare	Supported	100.0%	19 ms	30 ms	none	14
PublicNode	Supported	100.0%	26 ms	39 ms	none	16
dRPC	Supported	100.0%	42 ms	120 ms	none	15
NodeReal	Supported	100.0%	61 ms	115 ms	none	15
Blast API	Supported	100.0%	96 ms	149 ms	none	16
MEV Blocker	Supported	100.0%	133 ms	1509 ms	none	17
Merkle	Rate limited	7.1%	124 ms	124 ms	none	14
1RPConerpc	Rate limited	0.0%	—	—	none	16

Success excludes calls the provider does not implement — an optional method a provider declines to offer is a capability fact, not a failure, and is never scored as one.

Over time

Median latency per minute. Gaps are periods with no measurement, drawn as gaps rather than joined across — a line through missing data invents a measurement that was never taken.

Logarithmic scale — each gridline is ten times the one below it. Click a provider in the legend to hide it. 1 provider is not plotted: they returned no successful response in this window, so they have no latency.

What it does

A free-form string such as `Geth/v1.14.11-stable/linux-amd64/go1.22.9`. It reveals which client implementation is serving requests.

Many commercial providers replace it with their own product name, which is a legitimate choice and means the field cannot be relied on to identify software.

Returns

String — the client version.

Try it

Runnable as written, against a keyless public endpoint. Nothing here needs an API key.

Request

curl -s https://ethereum-rpc.publicnode.com \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","method":"web3_clientVersion","params":[],"id":67}'

As JSON-RPC

{
  "jsonrpc": "2.0",
  "method": "web3_clientVersion",
  "params": [],
  "id": 67
}

Response

{
  "id": 67,
  "jsonrpc": "2.0",
  "result": "Geth/v1.14.11-stable/linux-amd64/go1.22.9"
}

Things that bite

Client diversity matters for the health of the network, but this string is not evidence of it: a proxy can return anything.

Why it is measured

It shows which providers run a stock client and which sit behind their own infrastructure, which frames the rest of their results.

Called every 900 seconds per endpoint, with jitter so the fleet does not hit a provider in lockstep.

1h window · generated 2026-10-08 18:27:36 UTC · 9 providers