Helius - Solana's Leading RPC and API Platform

# Helius > Helius is Solana's leading infrastructure provider. From high-performance RPC nodes and transaction sending (Sender) to gRPC streaming (LaserStream), webhooks, and digital asset APIs — Helius powers teams like Phantom, Jupiter, DFlow, Coinbase, and Bitwise. This file is a directory. Each section below has its own llms.txt with detailed product info, examples, and use cases. Agents reading top-down can scope their consumption to the section they need. ## Section Indexes - [Full agent context](https://www.helius.dev/llms-full.txt) — every product page, use case, signup flow, and the docs index inlined in one file for single-fetch ingestion - [API catalog](https://www.helius.dev/api/llms.txt) — every Helius API surface with its OpenAPI spec and docs URL - [Documentation](https://www.helius.dev/docs/llms.txt) — full developer docs and API reference - [Use cases](https://www.helius.dev/use-case/llms.txt) — DeFi, exchanges, wallets, trading, fintech - [Blog](https://www.helius.dev/blog/llms.txt) — research, tutorials, ecosystem updates - [Staking](https://www.helius.dev/staking/llms.txt) — validator comparison and reward calculator ## Agent Surfaces - [AGENTS.md](https://www.helius.dev/AGENTS.md) — agent onboarding doc - [auth.md](https://www.helius.dev/auth.md) — authentication ceremony (API-key model, register/claim/revoke URIs) - [CLI reference](https://www.helius.dev/cli.md) — full helius-cli command catalog and exit-code contract - [Agent signup (Markdown)](https://www.helius.dev/api/agents.md) — programmatic API key acquisition - [Agent signup (JSON)](https://www.helius.dev/api/agents.json) — machine-readable signup spec - [Agent mode JSON](https://www.helius.dev/api/agent-mode) — structured product summary at one URL - [MCP server card](https://www.helius.dev/.well-known/mcp/server-card.json) — MCP tool inventory and install metadata - [A2A agent card](https://www.helius.dev/.well-known/agent-card.json) — A2A protocol

{ "openapi": "3.1.0", "info": { "title": "Helius API Catalog", "version": "1.0.0", "summary": "Machine-readable discovery document for every Helius API surface on Solana.", "description": "This document is a discovery catalog — not an operational spec. It exists so\nAI agents, codegen tools, and SDK generators can locate the canonical\nOpenAPI document for every Helius API in one request instead of crawling\nthe docs site.\n\nStart with the `x-apis` array: each entry links