--- title: "Circle: vendor profile | Agent Ready Checkout" description: "Circle: Issuer of USDC and EURC whose Agent Stack gives agents wallets and balances, a machine-readable marketplace of paid services. Sourced vendor profile." canonical: https://agentreadycheckout.com/vendors/circle site: "Agent Ready Checkout" last_updated: 2026-11-05 section: "Vendors" --- # Circle: vendor profile | Agent Ready Checkout > Circle: Issuer of USDC and EURC whose Agent Stack gives agents wallets and balances, a machine-readable marketplace of paid services. Sourced vendor profile. Source: https://agentreadycheckout.com/vendors/circle Site: Agent Ready Checkout Last reviewed: 2026-11-05 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](https://agentreadycheckout.com/vendors/by-type/agent-pay) Homepage [circle.com](https://www.circle.com) Last read 5 Nov 2026 ## 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](https://www.circle.com/agent-stack), 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](https://www.circle.com/agent-stack), read 5 Nov 2026. - Circle says USDC lets agents move money 24/7 and settle at near-zero cost. [circle.com](https://www.circle.com/agent-stack), read 5 Nov 2026. Vendor claim - Circle says USDC and EURC are fully backed and redeemable 1:1, with reserves reported weekly. [circle.com](https://www.circle.com/agent-stack), read 5 Nov 2026. - Circle says Agent Stack forms an economic loop where agents programmatically hold, transfer and settle USDC. [circle.com](https://www.circle.com/agent-stack), 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 | [How each check is read](https://agentreadycheckout.com/vendors#checks) ## 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](https://agentreadycheckout.com/vendors/by-type/agent-pay) in the vendors section - [All vendors](https://agentreadycheckout.com/vendors) ## Sources 1. [circle.com](https://www.circle.com), read 5 Nov 2026 2. [Circle Agent Stack | Agentic AI Tools for Financial Services | Circle](https://www.circle.com/agent-stack), read 5 Nov 2026 3. [Linux Foundation launches the x402 Foundation](https://www.linuxfoundation.org/press/linux-foundation-is-launching-the-x402-foundation-and-welcoming-the-contribution-of-the-x402-protocol), read 5 Nov 2026 4. [Ora cached score record for circle.com](https://ora.ai/api/score/circle.com?utm_source=agentreadycheckout.com&utm_medium=referral&utm_campaign=vendor), read 5 Nov 2026 5. [robots.txt of circle.com](https://circle.com/robots.txt), read 4 Nov 2026 6. [llms.txt of circle.com](https://circle.com/llms.txt), read 4 Nov 2026 7. [UCP profile path on circle.com](https://circle.com/.well-known/ucp.json), read 4 Nov 2026 8. [isitagentready scan service documentation (llms-full.txt)](https://isitagentready.com/llms-full.txt), read 5 Nov 2026 Last reviewed 5 Nov 2026 ## Edition Matrix edition of 4 Nov 2026. Reviewed 5 Nov 2026, [8 sources](#sources-h). ## Method [How cells, sources and read dates are defined](https://agentreadycheckout.com/method)