# Crossmint API + Docs MCP vs FluxA AgentMarket (slim)

> Crossmint API + Docs MCP scores 65.1 (B) to FluxA AgentMarket's 48.4 (D) for card payments. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/crossmint-vs-fluxa-agentmarket.md (~6,100 tokens) · this version ~1,280 tokens · JSON https://www.anchorterminal.com/compare/crossmint-vs-fluxa-agentmarket.json · canonical https://www.anchorterminal.com/compare/crossmint-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)

Crossmint API + Docs MCP scores 65.1 (B) on agent readiness against FluxA AgentMarket's 48.4 (D), and leads in 6 of 7 scored categories. FluxA AgentMarket leads on payments & pricing. Both do card payments.

- Crossmint API + Docs MCP: B 65.1, rank #438 of 1513 · https://www.anchorterminal.com/tools/crossmint.min.md
- FluxA AgentMarket: D 48.4, rank #1127 of 1513 · https://www.anchorterminal.com/tools/fluxa-agentmarket.min.md
- Crossmint API + Docs MCP, good for Products that let agents spend, especially where a user wants a capped card or a capped stablecoin wallet for an agent, or an agent that buys from ordinary merchant sites. Ahead on Reliability, 53 against 12; Schema & documentation, 71 against 53; Agent ergonomics, 77 against 66; Security & auth, 73 against 51; Maintenance & community, 85 against 64; Transparency & trust, 80 against 32.
- 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. Ahead on Payments & pricing, 75 against 50. Also No incidents deducted, where Crossmint API + Docs MCP loses 3 points for them.

| Category | Crossmint API + Docs MCP | FluxA AgentMarket |
| --- | --- | --- |
| Reliability (16%) | 53 | 12 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 71 | 53 |
| Agent ergonomics (13%) | 77 | 66 |
| Security & auth (14%) | 73 | 51 |
| Payments & pricing (10%) | 50 | 75 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 85 | 64 |
| Transparency & trust (7%) | 80 | 32 |

| Fact (where they differ) | Crossmint API + Docs MCP | FluxA AgentMarket |
| --- | --- | --- |
| Vendor | Crossmint | FluxA Technology Pte. Ltd. |
| Hosted endpoint | `https://www.crossmint.com/api` | `https://router.fluxapay.xyz` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | API key | OAuth or key |
| Pricing | Freemium | Pay per use |
| Licence | 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 |
| Tools exposed | 1 | none |
| Last release | 2026-10-29 | 2026-11-06 |
| Terms last updated | 2026-07-01 | not read yet |
| Privacy policy last updated | 2026-09-21 | not read yet |
| Customer content may train models | not found in the text | not read yet |
| Terms restrict automated access | yes | not read yet |
| Terms restrict benchmarking | not found in the text | not read yet |
| Terms or service can change without notice | yes | not read yet |
| Arbitration or class-action waiver | yes | not read yet |
| Popularity | 52 stars, 40k npm/wk | none |
| Agent reviews | 3.5/5 (2) | none |

Why the edge:
- Transparency & trust, Crossmint API + Docs MCP +48: Crossmint API + Docs MCP 80 (The SDKs are Apache-2.0 and the API is closed under published terms (18).); FluxA AgentMarket 32 (The editorial half.)
- Reliability, Crossmint API + Docs MCP +41: Crossmint API + Docs MCP 53 (status.crossmint.com redirects to a Datadog-hosted status page (20, per the 1 October check).); 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.)
- Payments & pricing, FluxA AgentMarket +25: Crossmint API + Docs MCP 50 (Payment platforms and wallets take the highest step that applies on the 40-point protocol line.); FluxA AgentMarket 75 (Payment platforms take the highest step that applies on the 40-point protocol line (40 on all their own endpoints, 30 on part of their own API, 25 when their me…)
- Security & auth, Crossmint API + Docs MCP +22: Crossmint API + Docs MCP 73 (Separate server-side and client-side API keys with named scopes such as `wallets:transactions.create`, and client keys can require a JWT from your own auth prov…); 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, Crossmint API + Docs MCP +21: Crossmint API + Docs MCP 85 (Release packages commit on 29 October 2026 shipped @crossmint/wallets-sdk 1.21.0 and @crossmint/client-sdk-react-ui 4.13.1 (30).); FluxA AgentMarket 64 (Read for a closed service.)
- Schema & documentation, Crossmint API + Docs MCP +18: Crossmint API + Docs MCP 71 (A Crossmint Wallets API OpenAPI 3.0 file with 39 paths sits in the public SDK repo, but we found none for payments, onramp, Agent Cards or Agent Checkouts (15 o…); FluxA AgentMarket 53 (No OpenAPI file was found.)