decode-signature?selector=0xa9059cbb

Reverse a 4-byte function selector, an event topic hash, or raw calldata into its human-readable signature using the 4byte database, with collisions resolved so the real signature…

Reverse a 4-byte function selector, an event topic hash, or raw calldata into its human-readable signature using the 4byte database, with collisions resolved so the real signature (the oldest registered) is returned first and the attacker-registered lookalikes are flagged. Parameter types are parsed out.

UNRATEDDelisted

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.003 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0xf22e558a…8ddff493

URL

https://api.agentstools.dev/evm/decode-signature?selector=0xa9059cbb

Seen

first 34 days ago · last 18 days ago

45 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC

Listed on?

Polygon, Arbitrum, Base, Solana

Disagrees with the offer

Score, from free handshakes onlyweights 2026.09.4

UN
RATED

0.747 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held back by sample size, not by the seller · gap to 1.000 is 0.253: 0.138 uncertain ? + 0.115 short ? · 0.053 to B

How the composite of 0.747 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
latency p95costs the most it answered as fast as its class	0.20	0.43	0.146		0.029	−0.115	−0.056
liveness it answered at all	0.60	1.00	0.863		0.518	0	−0.082
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.747	gap to 1.000 = 0.253 · 0.115 short · 0.138 uncertain	0.747	−0.115	−0.138

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out

  0.200 × 0.146   latency p95    
+ 0.600 × 0.863   liveness       
+ 0.200 × 1.000   price stability
= 0.747           → UNRATED: 45 of 30 paid calls      weights 2026.09.4 · 45 samples · seed cap_01M1A5A385PQPQKHHTNWSV2Y2E|2026-08-23T21:20:07.509Z|2026.09.4

Verify it yourselfnpx teppi-check https://api.agentstools.dev/evm/decode-signature?selector=0xa9059cbbcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5A385PQPQKHHTNWSV2Y2E