# Apparatus (Topl) Node and Genus gRPC API

**Canonical:** https://apis.io/apis/topl/apparatus-node/  
**Provider:** Topl — https://apis.io/providers/topl/  
**Base URL:** https://testnet.topl.tech  
**Documentation:** https://github.com/Topl/Knowledge-Base

Apparatus (Topl) Node and Genus gRPC API is published by [Topl](https://apis.io/providers/topl/) on the [APIs.io](https://apis.io/) network. Tagged areas include Blockchain, gRPC, Protobuf, Transaction, and Blocks. The published artifact set on APIs.io includes authentication docs and rate-limit docs.

The gRPC interface to the Apparatus (Topl) blockchain: NodeRpc on the Bifrost full node for submitting transactions, reading blocks and following the chain tip, and the Genus indexer's BlockService, TransactionService, NetworkMetricsService and TokenService for querying blocks, transactions, transaction outputs, network statistics and token policies. The node also implements the standard gRPC Health Checking Protocol. The contract is published and still downloadable; the service is not running.

## Machine-readable artifacts (9)

- **Protobuf** — https://raw.githubusercontent.com/api-evangelist/topl/refs/heads/main/grpc/node/services/bifrost_rpc.proto
- **Protobuf** — https://raw.githubusercontent.com/api-evangelist/topl/refs/heads/main/grpc/genus/genus_rpc.proto
- **Protobuf** — https://raw.githubusercontent.com/api-evangelist/topl/refs/heads/main/grpc/topl-protobuf.yml
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/topl/refs/heads/main/authentication/topl-authentication.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/topl/refs/heads/main/conventions/topl-conventions.yml
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/topl/refs/heads/main/data-model/topl-data-model.yml
- **Conformance** — https://raw.githubusercontent.com/api-evangelist/topl/refs/heads/main/conformance/topl-conformance.yml
- **RateLimits** — https://raw.githubusercontent.com/api-evangelist/topl/refs/heads/main/rate-limits/topl-rate-limits.yml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/topl/refs/heads/main/apis.yml

## Tags

Blockchain, gRPC, Protobuf, Transaction, Blocks, Tokens

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