Resolves a d20 ability check, skill check, attack roll, or saving throw for tabl...
https://x402.agentutility.ai/ability-checkOverview
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.
Protocol
x402 (POST)
Price
$0.0050
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
AgentUtility.ai
Source
self-registered
Indexed
2026-06-25 03:08:06
Health
Status
healthy
Latency (p50)
121ms
Uptime (30d)
98.5%
Reliability Score
99.2/100
Last Checked
2026-10-31 07:06:27
Last Healthy
2026-10-31 07:06:27
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"body": {
"advantage": true,
"dc": 15,
"modifier": 5,
"seed": 2
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Output Schema
{
"example": {
"critical_failure": false,
"critical_success": false,
"d20_rolls": [
15,
7
],
"dc": 15,
"mode": "advantage",
"modifier": 5,
"natural_roll": 15,
"success": true,
"total": 20
},
"type": "json"
}