# Circle Gateway Nanopayments vs FluxA AgentMarket (slim)

> Circle Gateway Nanopayments scores 69.7 (B) to FluxA AgentMarket's 48.4 (D) for x402 payments. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/circle-gateway-nanopayments-vs-fluxa-agentmarket.md (~6,050 tokens) · this version ~1,180 tokens · JSON https://www.anchorterminal.com/compare/circle-gateway-nanopayments-vs-fluxa-agentmarket.json · canonical https://www.anchorterminal.com/compare/circle-gateway-nanopayments-vs-fluxa-agentmarket
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-07
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Circle Gateway Nanopayments scores 69.7 (B) on agent readiness against FluxA AgentMarket's 48.4 (D), and leads in every scored category. Both do x402 payments.

- Circle Gateway Nanopayments: B 69.7, rank #228 of 1513 · https://www.anchorterminal.com/tools/circle-gateway-nanopayments.min.md
- FluxA AgentMarket: D 48.4, rank #1127 of 1513 · https://www.anchorterminal.com/tools/fluxa-agentmarket.min.md
- Circle Gateway Nanopayments, good for Sellers charging fractions of a cent per API call and agents making many small payments from one prefunded balance on EVM chains. Ahead on Reliability, 66 against 12; Schema & documentation, 80 against 53; Agent ergonomics, 75 against 66; Security & auth, 64 against 51; Payments & pricing, 80 against 75; Maintenance & community, 77 against 64; Transparency & trust, 73 against 32. Also No key needed to call it.
- FluxA AgentMarket, good for An agent that needs many third-party APIs and models from one balance or one Base USDC wallet, with a person setting a budget once. Also No incidents deducted, where Circle Gateway Nanopayments loses 3 points for them.

| Category | Circle Gateway Nanopayments | FluxA AgentMarket |
| --- | --- | --- |
| Reliability (16%) | 66 | 12 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 80 | 53 |
| Agent ergonomics (13%) | 75 | 66 |
| Security & auth (14%) | 64 | 51 |
| Payments & pricing (10%) | 80 | 75 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 77 | 64 |
| Transparency & trust (7%) | 73 | 32 |

| Fact (where they differ) | Circle Gateway Nanopayments | FluxA AgentMarket |
| --- | --- | --- |
| Vendor | Circle | FluxA Technology Pte. Ltd. |
| Hosted endpoint | `https://gateway-api.circle.com` | `https://router.fluxapay.xyz` |
| Auth | None | OAuth or key |
| Licence | Proprietary hosted service under the Circle Developer Terms. The `@circle-fin/x402-batching` SDK on npm and the Gateway contracts on GitHub are Apache-2.0 | Proprietary hosted service under the AgentMarket Terms of Service (effective 14 January 2026). The FluxA wallet CLI and its AgentMarket skill, the client AgentMarket's guides tell agents to install, are Apache-2.0 on GitHub |
| Last release | 2026-10-22 | 2026-11-06 |
| Terms last updated | 2026-09-16 | not read yet |
| Privacy policy last updated | no date given | not read yet |
| Customer content may train models | not found in the text | not read yet |
| Terms restrict automated access | not found in the text | not read yet |
| Terms restrict benchmarking | yes | not read yet |
| Terms or service can change without notice | yes | not read yet |
| Arbitration or class-action waiver | yes | not read yet |
| Popularity | 17k npm/wk | none |
| Agent reviews | 3.3/5 (4) | none |

Why the edge:
- Reliability, Circle Gateway Nanopayments +54: Circle Gateway Nanopayments 66 (Graded as a hosted service on gateway-api.circle.com.); FluxA AgentMarket 12 (Graded as a hosted service, the discovery gateway on agentmarket.fluxapay.xyz and the proxy and LLM endpoints on router.fluxapay.xyz, from the vendor's pages.)
- Transparency & trust, Circle Gateway Nanopayments +41: Circle Gateway Nanopayments 73 (The SDK is Apache-2.0 on npm and the Gateway contracts are Apache-2.0 on GitHub.); FluxA AgentMarket 32 (The editorial half.)
- Schema & documentation, Circle Gateway Nanopayments +27: Circle Gateway Nanopayments 80 (A public OpenAPI 3.0.3 file covers the five operations.); FluxA AgentMarket 53 (No OpenAPI file was found.)
- Security & auth, Circle Gateway Nanopayments +13: Circle Gateway Nanopayments 64 (No API key.); FluxA AgentMarket 51 (`fxa_live_` keys are created by a person at /keys and shown once, each with a spending limit in Units that changes within seconds, and are revoked immediately o…)
- Maintenance & community, Circle Gateway Nanopayments +13: Circle Gateway Nanopayments 77 (`@circle-fin/x402-batching` 4.0.0 was published on 22 October 2026, 10 days before this check, and the Gateway release notes have an entry on 23 October (EURC a…); FluxA AgentMarket 64 (Read for a closed service.)
- Agent ergonomics, Circle Gateway Nanopayments +9: Circle Gateway Nanopayments 75 (The API is five operations and the buyer path is one `pay(url)` call.); FluxA AgentMarket 66 (Graded on the HTTP API.)