# CoinGecko x402 API vs Massive (formerly Polygon.io) (slim)

> CoinGecko x402 API has a score of 71.9 (BB) against Massive (formerly Polygon.io)'s 70 (BB). Both do crypto market data. The largest gap is security & auth, 25 points. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/coingecko-x402-api-vs-massive.md (~1,400 tokens) · this version ~380 tokens · JSON https://www.anchorterminal.com/compare/coingecko-x402-api-vs-massive.json · canonical https://www.anchorterminal.com/compare/coingecko-x402-api-vs-massive
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

CoinGecko x402 API has a score of 71.9 (BB) against Massive (formerly Polygon.io)'s 70 (BB). Both do crypto market data. The largest gap is security & auth, 25 points.

- CoinGecko x402 API: BB 71.9, rank #76 of 452 · https://www.anchorterminal.com/tools/coingecko-x402-api.min.md
- Massive (formerly Polygon.io): BB 70, rank #102 of 452 · https://www.anchorterminal.com/tools/massive.min.md
- Pick CoinGecko x402 API for reliability (+7), security & auth (+25), payments & pricing (+6), transparency & trust (+7). Pick Massive (formerly Polygon.io) for schema & documentation (+17), agent ergonomics (+17).

| Category | CoinGecko x402 API | Massive (formerly Polygon.io) |
| --- | --- | --- |
| Reliability (16%) | 70 | 63 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 72 | 89 |
| Agent ergonomics (13%) | 61 | 78 |
| Security & auth (14%) | 60 | 35 |
| Payments & pricing (10%) | 96 | 90 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 82 | 79 |
| Transparency & trust (7%) | 75 | 68 |