AgentaOS vs Fireblocks
Fireblocks is the industry standard for institutional MPC key management. AgentaOS brings the same security model to teams that don’t have a $50k/yr budget.
Both use MPC threshold signing. Both split private keys into shares. The difference is who runs the infrastructure and what it costs.
Quick Comparison
| AgentaOS | Fireblocks |
|---|
| Signing model | 2-of-3 threshold ECDSA (CGGMP24) | MPC-CMP (proprietary) |
| Key custody | No single party holds the full key. You control your shares. | Fireblocks holds shares on your behalf. |
| Pricing | Free and open source | 50k−500k/yr (enterprise contracts) |
| Setup time | 30 seconds (npm install -g agentaos) | Weeks (onboarding, compliance, contracts) |
| Source code | Open source SDK (Apache-2.0) | Proprietary |
| Chain support | Every EVM chain | 40+ chains (EVM, Bitcoin, Solana, Cosmos) |
| Policy engine | Spending limits, allowlists, rate limits, time windows | Comprehensive policy engine with approval flows |
| Audit log | Built-in, exportable | Built-in, SOC 2 compliant |
| AI agent support | Native SDK, CLI, MCP server | API-only |
| Compliance | Self-managed | SOC 2 Type II, ISO 27001 |
| Support | Community (GitHub) | Dedicated account manager |
When to Choose Agenta
- You’re a developer or small team. You don’t need enterprise compliance or a dedicated account manager. You need signing that works.
- You want sovereign accounts. No single party holds the full key. The private key never exists.
- You’re building AI agents. AgentaOS has a native TypeScript SDK, CLI, and MCP server designed for autonomous agent signing.
- You can’t justify $50k/yr. AgentaOS is free to start. Install the CLI and sign in 30 seconds.
- You want to read the source. The SDK and core libraries are open source. Audit the cryptography yourself.
When to Choose Fireblocks
- You need SOC 2 / ISO 27001 compliance. Fireblocks is already certified.
- You’re an institution managing billions. Fireblocks has multi-layer approval workflows, gas station networks, and institutional-grade SLAs.
- You need non-EVM chains today. Fireblocks supports Bitcoin, Solana, Cosmos, and 40+ chains. Agenta currently covers EVM only (Bitcoin and Solana planned).
- You need 24/7 enterprise support. Fireblocks provides dedicated account managers and SLAs.
The Security Model
Both Agenta and Fireblocks use MPC threshold signing. The core security property is the same: the full private key never exists as a single value.
Agenta: Three shares (Signer, Server, User). Any 2-of-3 can sign. No single party controls the key. The signing protocol is CGGMP24, an open peer-reviewed algorithm implemented in Rust and compiled to WebAssembly. The implementation uses the LFDT-Lockness/cggmp21 Rust crate.
Fireblocks: Proprietary MPC-CMP protocol. Fireblocks holds some shares, you hold others (depending on configuration). The implementation is closed-source.
Total Cost Comparison
| Item | Agenta | Fireblocks |
|---|
| Software license | Free to start | 50k−500k/yr |
| Infrastructure | Managed by AgentaOS | Managed by Fireblocks |
| Setup time | 30 seconds | Weeks |
| Ongoing maintenance | Managed | Managed |
| Per-transaction fee | None | Varies by plan |
Migration
If you’re already on Fireblocks and want to evaluate Agenta:
- Test in parallel. Run Agenta on a testnet alongside your Fireblocks setup.
- Create a signer.
agenta init takes 30 seconds.
- Compare the flow. Sign a transaction with both. See the difference in setup complexity.
- Evaluate custody. With AgentaOS, no single party holds the full key. No vendor lock-in.
Agenta doesn’t require a migration from Fireblocks. Each signer gets a new Ethereum address via fresh key generation. You move funds to the new address when you’re ready.
Next Steps
