# NOWNodes

> Blockchain JSON-RPC and explorer API for Ethereum, Base, Solana, and Bitcoin

Full-node access through NOWNodes, paid per call.

JSON-RPC: send one JSON-RPC 2.0 request per HTTP call, as you would to any node.
- POST /eth   Ethereum mainnet (eth_blockNumber, eth_getBalance, eth_call, ...)
- POST /base  Base mainnet
- POST /sol   Solana mainnet (getSlot, getBalance, ...)

Explorer (Blockbook REST) for Bitcoin mainnet: addresses, transactions, blocks,
UTXOs, and fee estimates. Add `details=basic` to address calls to keep responses small.

- Category: `blockchain/rpc`. Tags: rpc, json-rpc, blockbook, ethereum, base, solana, bitcoin, nodes.
- Pay URL: `https://pay-servicerouter.agents.bakingbad.dev/service/nownodes`
- Pay with: Credits, x402, MPP.
- Last 30 days: 12 calls, 100.0% success, 272 ms median, 457 ms p95.

## Routes

| Route | Summary | Price | Pay with | Calls (30 days) |
|---|---|---|---|---|
| `POST /eth` | Ethereum JSON-RPC | $0.0005 | Credits, x402, MPP | 3 |
| `POST /base` | Base JSON-RPC | $0.0005 | Credits, x402, MPP | 3 |
| `POST /sol` | Solana JSON-RPC | $0.0005 | Credits, x402, MPP | 3 |
| `GET /btc/api/v2/address/{address}` | Balance and transactions of a Bitcoin address | $0.001 | Credits, x402, MPP | 0 |
| `GET /btc/api/v2/tx/{txid}` | A Bitcoin transaction | $0.001 | Credits, x402, MPP | 0 |
| `GET /btc/api/v2/block/{block}` | A Bitcoin block by height or hash | $0.001 | Credits, x402, MPP | 0 |
| `GET /btc/api/v2/utxo/{descriptor}` | Unspent outputs of an address or xpub | $0.001 | Credits, x402, MPP | 0 |
| `GET /btc/api/v2/estimatefee/{blocks}` | Fee estimate for confirmation within N blocks | $0.001 | Credits, x402, MPP | 3 |

Only `2xx` answers are charged.

## For agents

- [llms.txt](https://api-servicerouter.agents.bakingbad.dev/v1/services/nownodes/llms.txt)
- [Agent Skill](https://api-servicerouter.agents.bakingbad.dev/v1/services/nownodes/skill.md)
- [OpenAPI](https://api-servicerouter.agents.bakingbad.dev/v1/services/nownodes/openapi.json)

> Use the NOWNodes API through Service Router. Read https://api-servicerouter.agents.bakingbad.dev/v1/services/nownodes/llms.txt for how to call and pay for it. Ask me before you spend anything.

## Links

- Homepage: https://nownodes.io
- Docs: https://docs.nownodes.io
- Updated 7 Oct 2026