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AgentUtility.ai · x402.agentutility.ai

Resolves a d20 ability check, skill check, attack roll, or saving…

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.

Ready now5 calls · 4 buyers in 30 days

Input

Roll twice, take the higher.
Difficulty class to beat. Omit to just get the roll.
Roll twice, take the lower.
Total bonus/penalty added to the d20 (-20..40). Default 0.
Optional integer seed for a reproducible roll.

Sample response

Published by the provider. Your run returns a fresh response.

response9 keys
critical_failurefalse
critical_successfalse
d20_rolls2 items
015
17
dc15
mode"advantage"
modifier5
natural_roll15
successtrue
total20
responseobject, 9 keys
Your agent can do this on its own
Add the MCP URL in Claude Code, Cursor or Codex. Your agent can run Tools within its spending limits, or ask for approval each time. Connect your agent

Connect your agent

Add one MCP URL and your agent can find and run this tool within its spending limits. Choose “Ask each time” if you want to approve every Call.

MCP URL

https://app.aecon.ai/mcp
Terminalbash
claude mcp add --transport http --scope user agentic-economy "https://app.aecon.ai/mcp"

In Claude Code, open /mcp, select agentic-economy, then choose Authenticate.

Track record

Paid calls, last 30 days
5
Buyers, last 30 days
4
Last paid call

Reported by the x402 directory.

A$0.0072 per call