Vendor profile, agent-pay builder
Circle
In short
Circle, the issuer of USDC and EURC, gives developers an Agent Stack in which an agent holds a wallet and balance and buys paid services from a machine-readable marketplace, paying over x402 on supported chains. Cards are outside its scope: the money that moves is USDC. ACP, UCP and the card networks' own agent programmes go unnamed.
At a glance
- What it is
- Issuer of USDC and EURC whose Agent Stack gives agents wallets and balances, a machine-readable marketplace of paid services and x402 payments across supported chains.
- Type
- Agent-pay builder
- Homepage
- circle.com
- Last read
What it does for this layer
- Circle's Agent Stack lets developers equip agents with a wallet and balance and lets agents discover and pay for services in a machine-readable marketplace. circle.com, read 5 Nov 2026.
- Circle says agents using Agent Stack transact across supported chains via x402, with new agent payment protocols added as they emerge. circle.com, read 5 Nov 2026.
- Circle says USDC lets agents move money 24/7 and settle at near-zero cost. circle.com, read 5 Nov 2026. Vendor claim
- Circle says USDC and EURC are fully backed and redeemable 1:1, with reserves reported weekly. circle.com, read 5 Nov 2026.
- Circle says Agent Stack forms an economic loop where agents programmatically hold, transfer and settle USDC. circle.com, read 5 Nov 2026.
Partner lists that name it
| Where it appears | Source | Basis | Read |
|---|---|---|---|
| Initial supporters named in the x402 Foundation release, 2 Apr 2026 | linuxfoundation.org | Secondary source | 5 Nov 2026 |
Products and plans
| Product | What it is | Price on file |
|---|---|---|
| Circle Agent Stack | Wallets, balances, a paid-services marketplace and x402 payments for agents. | No price on file |
| USDC | A dollar stablecoin used as the settlement asset for agent payments. | No price on file |
Standards
| Standard | Status | Evidence and source |
|---|---|---|
| ACP | no statement | None in the pages read, 5 Nov 2026 |
| UCP | no statement | None in the pages read, 5 Nov 2026 |
| AP2 | no statement | None in the pages read, 5 Nov 2026 |
| Visa TAP | no statement | None in the pages read, 5 Nov 2026 |
| Visa IC | no statement | None in the pages read, 5 Nov 2026 |
| Mastercard Agent Pay | no statement | None in the pages read, 5 Nov 2026 |
| Agent Pay for Machines | no statement | None in the pages read, 5 Nov 2026 |
| Amex ACE | no statement | None in the pages read, 5 Nov 2026 |
| x402 | supports | circle.com, read 5 Nov 2026 |
| MPP | no statement | None in the pages read, 5 Nov 2026 |
| Link for agents | no statement | None in the pages read, 5 Nov 2026 |
| Verifiable Intent | no statement | None in the pages read, 5 Nov 2026 |
Checks on this vendor's domains
| Check | Result | Domain read | Dated | Source |
|---|---|---|---|---|
| Ora agent-readiness score (cached) | 79/100 (B) | circle.com | 28 Oct 2026 | ora.ai |
| robots.txt | HTTP 200, 1 user-agent groups | circle.com | 4 Nov 2026 | circle.com |
| llms.txt | HTTP 200 | circle.com | 4 Nov 2026 | circle.com |
| UCP profile at /.well-known/ucp.json | HTTP 404 | circle.com | 4 Nov 2026 | circle.com |
| Cloudflare isitagentready scan | 27/100 (L2 Bot-Aware) | circle.com | 5 Nov 2026 | POST /api/scan on isitagentready.com, documented in llms-full.txt |
| Homepage fetch at build | HTTP 200 | circle.com | 5 Nov 2026 | circle.com |
What it does not do
- Circle does not settle card payments for agents; Agent Stack moves USDC.
- Circle's Agent Stack page does not name ACP, UCP or the card network agent programmes.
Related pages on this site
- All agent-pay builders in the vendors section
- All vendors
Sources
- circle.com, read 5 Nov 2026
- Circle Agent Stack | Agentic AI Tools for Financial Services | Circle, read 5 Nov 2026
- Linux Foundation launches the x402 Foundation, read 5 Nov 2026
- Ora cached score record for circle.com, read 5 Nov 2026
- robots.txt of circle.com, read 4 Nov 2026
- llms.txt of circle.com, read 4 Nov 2026
- UCP profile path on circle.com, read 4 Nov 2026
- isitagentready scan service documentation (llms-full.txt), read 5 Nov 2026
Last reviewed