# TrueBlocks: pricing, API and features

Category: [On-chain analytics](https://tokvane.app/categories/onchain-analytics) · Vendor: TrueBlocks · Website: https://trueblocks.io · Status: active

Open-source local indexer for EVM chains (Unchained Index of address appearances) with the chifra CLI and local API for exporting transactions, logs and accounting data.

> TrueBlocks (TrueBlocks) — pricing: open-source; free tier: Yes; REST: Yes; MCP: unknown; open source: Yes.

## Pricing

- **Model:** open-source
- **Free tier:** Yes — GPL-3.0 software run locally against your own node.
- **Plans:** unknown

_Verified on 2026-10-30. Source: https://raw.githubusercontent.com/TrueBlocks/trueblocks-core/master/README.md_

## Access & auth

- **Authentication:** none
- **KYC required:** No
- **Notes:** Runs locally; needs an RPC endpoint. 'chifra serve' API is meant for single-user environments.

_Verified on 2026-10-30. Source: https://raw.githubusercontent.com/TrueBlocks/trueblocks-core/master/README.md_

## Coverage

- **Exchanges:** unknown
- **Chains:** EVM-compatible chains, particularly Ethereum mainnet
- **Assets:** Address transaction histories, logs, ERC-20 holdings

_Verified on 2026-10-30. Source: https://raw.githubusercontent.com/TrueBlocks/trueblocks-core/master/README.md_

## Capabilities

- **Capabilities:** onchain-metrics, historical-data

_Verified on 2026-10-30. Source: https://raw.githubusercontent.com/TrueBlocks/trueblocks-core/master/README.md_

## Interfaces

- **REST API:** Yes
- **WebSocket:** unknown
- **SDKs:** go, python, typescript
- **Official MCP server:** unknown
- **Other:** chifra command line; local REST API via chifra serve

_Verified on 2026-10-30. Source: https://trueblocks.io/sdks/_

## Open source & self-hosting

- **Open source:** Yes
- **Licence:** GPL-3.0
- **Self-host:** Yes
- **Repository:** https://github.com/TrueBlocks/trueblocks-core

_Verified on 2026-10-30. Source: https://raw.githubusercontent.com/TrueBlocks/trueblocks-core/master/LICENSE_

## FAQ

**Does TrueBlocks have a free tier?**
Yes. GPL-3.0 software run locally against your own node. (verified 2026-10-30)

**Does TrueBlocks offer an API?**
REST: Yes. WebSocket: unknown. Official MCP server: unknown. Verified 2026-10-30.

**Is TrueBlocks open source or self-hostable?**
Open source: Yes; licence: GPL-3.0; self-host: Yes. Verified 2026-10-30.

**What are alternatives to TrueBlocks?**
Other on-chain analytics in our directory: Alchemy Data APIs, Allium, Arkham Intelligence, Artemis, Blockscout.

Alternatives: https://tokvane.app/alternatives/trueblocks

Information only, not financial or investment advice.