# Stablecoin

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

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- **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)
- **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