Stablecoin

A cryptocurrency designed to hold a stable value, typically pegged to a fiat currency such as the US dollar.

Stablecoins are a leading settlement rail for agentic commerce; protocols like x402 and AP2 lean on them for instant, programmable, machine-native payments.

term
Stablecoin
category
commerce
short_def
A cryptocurrency designed to hold a stable value, typically pegged to a fiat currency such as the US dollar.
long_def
A stablecoin (e.g. USDC) aims to keep a 1:1 peg to a reference asset, usually backed by reserves, so it can be transferred on-chain without the volatility of other crypto. For agent payments, stablecoins offer fast, programmable, low-friction settlement — which is why several agent-payment protocols settle in them.
see_also
agentic-commerce x402 micropayment
etymology_origin
— verify-against-primary-at-build ↗ https://en.wikipedia.org/wiki/Stablecoin — term emerged with fiat-pegged crypto tokens in the mid-2010s
related_to
agentic-commerce x402 micropayment agent-as-buyer
contrast_with
Unlike volatile cryptocurrencies whose price swings, a stablecoin targets a fixed value, making it usable as a unit of account for an actual payment.
example
The x402 payment flow demonstrated in this site's services page settles in a USD stablecoin (USDC) — the kind of programmable rail an agent can pay over.
source
https://en.wikipedia.org/wiki/Stablecoin
status
active
why_it_matters
Stablecoins are a leading settlement rail for agentic commerce; protocols like x402 and AP2 lean on them for instant, programmable, machine-native payments.
sameAs
https://en.wikipedia.org/wiki/Stablecoin
bridge_entity
agentic-commerce
last_verified
2026-07-06
md_twin
/glossary/stablecoin.md

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