Topl

Apparatus (Topl) Node and Genus gRPC API

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.

GitHub

Documentation

📖
Authentication
https://raw.githubusercontent.com/api-evangelist/topl/refs/heads/main/authentication/topl-authentication.yml
📖
RateLimits
https://raw.githubusercontent.com/api-evangelist/topl/refs/heads/main/rate-limits/topl-rate-limits.yml

Other Resources

🔗
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
🔗
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
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/topl/refs/heads/main/apis.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/apparatus-node"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
aid: topl:apparatus-node
name: Apparatus (Topl) Node and Genus gRPC API
description: '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.'
humanURL: https://github.com/Topl/Knowledge-Base
baseURL: https://testnet.topl.tech
x-baseurl-status: NXDOMAIN when probed 2026-08-30. This is the base the archived quickstart documents
  ("The host is testnet.topl.tech and the port is 443", with --secure for TLS); it is recorded because
  it is what the provider published, not because it answers. A node can still be run locally from docker.io/toplprotocol/bifrost-node
  on ports 9084/9085.
tags:
- Blockchain
- gRPC
- Protobuf
- Transaction
- Blocks
- Tokens
tags_raw:
- Blockchain
- gRPC
- Protobuf
- Transactions
- Blocks
- Tokens
properties:
- type: Protobuf
  url: grpc/node/services/bifrost_rpc.proto
- type: Protobuf
  url: grpc/genus/genus_rpc.proto
- type: Protobuf
  url: grpc/topl-protobuf.yml
- type: Authentication
  url: authentication/topl-authentication.yml
- type: Conventions
  url: conventions/topl-conventions.yml
- type: DataModel
  url: data-model/topl-data-model.yml
- type: Conformance
  url: conformance/topl-conformance.yml
- type: RateLimits
  url: rate-limits/topl-rate-limits.yml