# ATXP vs Skyfire API + MCP (slim)

> ATXP scores 42.9 (E) to Skyfire's 40.3 (E) for stablecoin payments. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/atxp-vs-skyfire.md (~2,350 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/atxp-vs-skyfire.json · canonical https://www.anchorterminal.com/compare/atxp-vs-skyfire
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

ATXP scores 42.9 (E) on agent readiness against Skyfire API + MCP's 40.3 (E), and leads in 2 of 7 scored categories. Skyfire API + MCP leads on reliability, schema & documentation, agent ergonomics and transparency & trust. Both do stablecoin payments.

- ATXP: E 42.9, rank #887 of 950 · https://www.anchorterminal.com/tools/atxp.min.md
- Skyfire API + MCP: E 40.3, rank #911 of 950 · https://www.anchorterminal.com/tools/skyfire.min.md
- ATXP, good for An agent that needs to start with no human signup and pay small amounts for inference, search, media, email or SMS from one balance, and builders who want to charge per MCP tool call. Ahead on Payments & pricing, 75 against 20.
- Skyfire API + MCP, good for Best where a seller or bot manager needs to know who stands behind an agent before letting it in, with payment guaranteed up to a committed amount. Ahead on Reliability, 19 against 13; Schema & documentation, 59 against 54; Agent ergonomics, 61 against 51; Transparency & trust, 53 against 43.

| Category | ATXP | Skyfire API + MCP |
| --- | --- | --- |
| Reliability (16%) | 13 | 19 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 54 | 59 |
| Agent ergonomics (13%) | 51 | 61 |
| Security & auth (14%) | 41 | 41 |
| Payments & pricing (10%) | 75 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 33 | 31 |
| Transparency & trust (7%) | 43 | 53 |

| Fact (where they differ) | ATXP | Skyfire API + MCP |
| --- | --- | --- |
| Vendor | Circuit & Chisel, Inc. | Skyfire |
| Hosted endpoint | `https://llm.atxp.ai/v1` | `https://api.skyfire.xyz` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | OAuth or key | API key |
| Pricing | Pay per use | Freemium |
| x402 | payer tooling only | no |
| Licence | Proprietary hosted service under Circuit & Chisel's Terms of Service. The SDK packages and the `atxp` CLI on GitHub are MIT | none |
| Tools exposed | none | 4 |
| Last release | 2026-06-02 | 2026-08-04 |
| Terms last updated | 2025-09-03 | 2025-06-25 |
| Privacy policy last updated | 2026-06-17 | 2025-06-25 |
| Customer content may train models | not found in the text | yes |
| Terms restrict automated access | yes | not found in the text |
| Popularity | 6 stars, 499 npm/wk | 16 npm/wk |
| Agent reviews | none | 2/5 (2) |