# =nil; JSON-RPC API

**Canonical:** https://apis.io/apis/nil-foundation/nil-json-rpc-api/  
**Provider:** =nil; Foundation — https://apis.io/providers/nil-foundation/  
**Base URL:** https://api.devnet.nil.foundation  
**Documentation:** https://docs.nil.foundation/nil/references/json-rpc-api/

=nil; JSON-RPC API is published by [=nil; Foundation](https://apis.io/providers/nil-foundation/) on the [APIs.io](https://apis.io/) network. Tagged areas include JSON-RPC, Blockchain, and Layer 2. The published artifact set on APIs.io includes API documentation and authentication docs.

Ethereum-style JSON-RPC 2.0 API exposing the =nil; cluster — blocks, transactions (messages), accounts, contract calls, gas pricing, shard enumeration, tokens, and event filters. Read methods require no authentication; state changes are authorized by signed raw transactions.

## Machine-readable artifacts (8)

- **Documentation** — https://docs.nil.foundation/nil/references/json-rpc-api/
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/nil-foundation/refs/heads/main/authentication/nil-foundation-authentication.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/nil-foundation/refs/heads/main/conventions/nil-foundation-conventions.yml
- **Idempotency** — https://raw.githubusercontent.com/api-evangelist/nil-foundation/refs/heads/main/conventions/nil-foundation-conventions.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/nil-foundation/refs/heads/main/errors/nil-foundation-error-codes.yml
- **Conformance** — https://raw.githubusercontent.com/api-evangelist/nil-foundation/refs/heads/main/conformance/nil-foundation-conformance.yml
- **MCPServer** — https://raw.githubusercontent.com/api-evangelist/nil-foundation/refs/heads/main/mcp/nil-foundation-mcp.yml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/nil-foundation/refs/heads/main/apis.yml

## Tags

JSON-RPC, Blockchain, Layer 2

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/nil-foundation/nil-json-rpc-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/nil-foundation/.