Endpoint · lookupPOSTx402.agentutility.ai/ability-check

Resolves a d20 ability check, skill check, attack roll, or saving throw for tabletop RPGs.

Resolves a d20 ability check, skill check, attack roll, or saving throw for tabletop RPGs. Rolls a d20 with an optional modifier and advantage/disadvantage, compares to a DC, and reports total, success/failure, and natural-20 / natural-1. Seedable. Use it as a d20 check resolver API for any RPG.

UNRATEDListed

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.005 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x6c0752c0…9ebb5621

URL

https://x402.agentutility.ai/ability-check

Seen

first 34 days ago · last 12 hr ago

55 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC, Solana

Listed on?

Base, Solana

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.596 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by liveness · gap to 1.000 is 0.404: 0.082 uncertain ? + 0.322 short ? · 0.054 to C

How the composite of 0.596 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
livenesscosts the most it answered at all	0.60	0.80	0.659		0.396	−0.122	−0.082
latency p95 it answered as fast as its class	0.20	0.00	0.000		0.000	−0.200	0
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.596	gap to 1.000 = 0.404 · 0.322 short · 0.082 uncertain	0.596	−0.322	−0.082

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

The multiplication, written out

  0.600 × 0.659   liveness       
+ 0.200 × 0.000   latency p95    
+ 0.200 × 1.000   price stability
= 0.596           → UNRATED: 49 of 30 paid calls      weights 2026.09.6 · 49 samples · seed cap_01M1A5A0SMJW2C6HS7SG8SGK09|2026-09-02T10:35:23.117Z|2026.09.6

Verify it yourselfnpx teppi-check https://x402.agentutility.ai/ability-checkcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5A0SMJW2C6HS7SG8SGK09