selector-extract

Extract the 4-byte function selector from calldata hex — call when reading the 4-byte selector from calldata.

Extract the 4-byte function selector from calldata hex — call when reading the 4-byte selector from calldata. Use for chain input hygiene without live RPC—adjacent to OneSource-class small chain reads, but static/local only so rights and margin stay clear. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, and no claim of live chain tip, web search, or media gen…

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?

0x9f8bd987…175e73a2

URL

https://api.delx.ai/api/v1/x402/selector-extract

MCP server on this host: io.github.davidmosiah/delx-mcp-a2a

Seen

first 34 days ago · last 29 days ago

26 free handshakes

Payment

Pays through

x402 · MPP tempo

Offered on?

Base USDC, Solana, Tempo USDC.e

Listed on?

Base, Solana

Score, from free handshakes onlyweights 2026.09.1

UN
RATED

0.799 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 0.201: 0.159 uncertain ? + 0.043 short ? · 0.001 to B

How the composite of 0.799 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
livenesscosts the most it answered at all	0.60	1.00	0.754		0.452	0	−0.148
latency p95 it answered as fast as its class	0.20	0.79	0.730		0.146	−0.043	−0.011
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.799	gap to 1.000 = 0.201 · 0.043 short · 0.159 uncertain	0.799	−0.043	−0.159

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

The multiplication, written out

  0.600 × 0.754   liveness       
+ 0.200 × 0.730   latency p95    
+ 0.200 × 1.000   price stability
= 0.799           → UNRATED: 25 of 30 paid calls      weights 2026.09.1 · 25 samples · seed cap_01M1A5A96656VP3DQERJ4S36SN|2026-08-13T16:02:13.964Z|2026.09.1

Verify it yourselfnpx teppi-check https://api.delx.ai/api/v1/x402/selector-extractcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5A96656VP3DQERJ4S36SN