# Envio > Envio blockchain data stack — HyperSync, HyperIndex, HyperRPC; fast indexing and data APIs. Use when this capability is needed. - Skill: `tomevault-io/envio` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/envio` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/envio/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/envio --- > Skill is based on Envio docs (enviodev/docs), generated at 2026-02-09. Envio provides high-performance blockchain data access and indexing: HyperSync (raw data API), HyperIndex (indexer + GraphQL), and HyperRPC (read-only JSON-RPC). This skill covers product choice, client usage, queries, API tokens, and supported networks. ## Core References | Topic | Description | Reference | |-------|-------------|-----------| | Overview | HyperSync, HyperIndex, HyperRPC; when to use each | [core-overview](references/core-overview.md) | | HyperSync | Client setup, query shape, streaming, field selection | [core-hypersync](references/core-hypersync.md) | | HyperIndex | config.yaml, schema.graphql, event handlers, deployment | [core-hyperindex](references/core-hyperindex.md) | | HyperRPC | When to use, supported methods, endpoint and token | [core-hyperrpc](references/core-hyperrpc.md) | ## Features | Topic | Description | Reference | |-------|-------------|-----------| | API Tokens | Generation, usage in clients, security | [features-api-tokens](references/features-api-tokens.md) | | Supported Networks | HyperSync/HyperRPC URLs and tiers | [features-networks](references/features-networks.md) | ## Best Practices | Topic | Description | Reference | |-------|-------------|-----------| | Query Design | Field selection, join modes, limits, streaming, tip handling | [best-practices-queries](references/best-practices-queries.md) | --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/hairyf) — claim your Tome and manage your conversions.