# Best x402 on-chain data API

As of 20 Oct 2026, the best x402 on-chain data API on Hagglyai's ranking is NodeFlare: scored 82/100, $0.001 per chain read, 11 paying wallets in the last 30 days (POST https://rpc.nodeflare.app/base/x402). Hagglyai compares 946 paid on-chain data APIs on price, live uptime and real usage.

| # | Service | Price per chain read | Score | Uptime 7d | Payers 30d | Endpoint |
|---|---|---|---|---|---|---|
| 1 | NodeFlare | $0.001 | 82 B | 100% | 11 | `POST https://rpc.nodeflare.app/base/x402` |
| 2 | api.x402node.dev | $0.01 | 85 A | 100% | 22 | `GET https://api.x402node.dev/chain/honeypot` |
| 3 | ApiToll Base Gas Oracle | $0.001 | 82 B | 100% | 13 | `GET https://gas.apitoll.cloud/v1/base/gas` |
| 4 | Automaton Colony | $0.0049 | 80 B | 100% | 9 | `GET https://colony.automatoncolony.xyz/api/v1/x402/datos/estado-cadena` |
| 5 | Phoenix Zero L2 Health Oracle | $0.01 | 79 B | 100% | 6 | `GET https://rtt.phoenix-ai.work/api/v1/health` |
| 6 | vu.velvetdao.xyz | $0.01 | 79 B | 100% | 6 | `POST https://vu.velvetdao.xyz/api/v1/wallet_402` |
| 7 | canary.countersignpay.com | $0.01 | 79 B | 100% | 6 | `GET https://canary.countersignpay.com/v1/base/head` |
| 8 | NodeFlare | $0.001 | 79 B | 100% | 5 | `POST https://rpc.nodeflare.app/unichain/x402` |
| 9 | api.x402node.dev | $0.004 | 79 B | 100% | 5 | `GET https://api.x402node.dev/chain/balance` |
| 10 | NetIntel | $0.005 | 79 B | 100% | 5 | `GET https://netintel.dev/wallet/balance` |

Listings carrying a warning (wrong price, wrong wallet, not answering) are left out. Full comparison with every listing and filter: https://hagglyai.com/compare/onchain-data

## Questions

### What is the best x402 on-chain data API?

As of 20 Oct 2026, the best x402 on-chain data API on Hagglyai's ranking is NodeFlare: scored 82/100, $0.001 per chain read, 11 paying wallets in the last 30 days (POST https://rpc.nodeflare.app/base/x402). Hagglyai compares 946 paid on-chain data APIs on price, live uptime and real usage.

### How much does an x402 on-chain data API call cost?

Across 1042 paid endpoints Hagglyai tracks, prices run from $0.0001 to $200 per chain read; the middle half costs $0.002 to $0.01.

### How does Hagglyai rank x402 APIs?

Hagglyai probes every paid endpoint for a valid x402 payment-required answer and scores it on 7-day uptime, speed and whether the price and wallet match the listing; usage comes from the public catalogues. Sellers cannot pay for placement. Method: https://hagglyai.com/how-we-test

### How does an agent pay for an x402 on-chain data API?

The agent calls the endpoint, gets an HTTP 402 answer with the price, signs a USDC payment with any x402 client and repeats the call. Agents can also ask Hagglyai first, over MCP (find_best) or https://hagglyai.com/api/v1/best?task=on-chain%20data%20API.

See also: Cheapest x402 on-chain data API: https://hagglyai.com/x402/cheapest-on-chain-data-api.md
Markdown of the full comparison: https://hagglyai.com/compare/onchain-data.md · JSON: https://hagglyai.com/api/v1/categories/onchain-data

Source: hagglyai.com/compare/onchain-data · as of 2026-10-20 13:08 UTC