What is AXIO?
AXIO is a Jito-class MEV block engine for the X1/Tachyon blockchain. It captures MEV, distributes yield to stakers, and provides priority block inclusion for searchers.
What is AXIO?
AXIO (Adaptive eXecution & Intelligent Orchestration) is a complete MEV infrastructure layer for the X1/Tachyon blockchain. It operates an off-chain auction engine that accepts bundles from searchers, simulates them for validity, scores them by expected value, and delivers winning bundles to validators for priority block inclusion.
Why AXIO?
MEV (Maximal Extractable Value) is the profit extracted by reordering, inserting, or censoring transactions within a block. On X1/Tachyon, MEV opportunities arise from DEX arbitrage, liquidations, and sandwich attacks. Without infrastructure like AXIO, this value is captured by a small number of sophisticated bots at the expense of regular users.
AXIO solves this by:
- Running a fair auction where searchers compete on expected value, not network spam
- Distributing MEV revenue to validators and stakers via the aXNT liquid staking token
- Providing guaranteed atomicity — all transactions in a bundle execute together or not at all
- Eliminating mempool exposure — searcher transactions never enter the public mempool
Key Metrics (Testnet)
| Metric | Value |
|---|---|
| Bundles on-chain | 527+ |
| Max throughput | 31,136 bundles/sec (burst) |
| Sustained connections | 5,000 (zero errors) |
| End-to-end latency (p99) | 3.32ms |
| Landing rate | 94.7% |
| Tests passing | 199+ |
How It Works
Searchers submit bundles via gRPC
↓
AXIO Engine (evaluate, simulate, score)
↓
Continuous auction (400ms slots)
↓
Winning bundles → Relay → Validators
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Block produced with MEV bundles included
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Tips distributed: 40% validator, 25% reserve, 15% stakers, 20% treasuryFor Searchers
Submit bundles via gRPC and compete in a fair auction. Your transactions are never exposed to the public mempool, and you get guaranteed atomic execution.
Searcher Guide
Authentication, bundle submission, and strategy optimization
API Reference
Complete gRPC and REST API documentation
SDK Reference
TypeScript and Rust SDK documentation
For Validators
Run the AXIO-enabled validator binary to receive auction-winning bundles and earn tip revenue. Zero changes to consensus behavior — AXIO adds an optional bundle priority lane.
Validator Onboarding
Build, configure, and run the AXIO validator
Relay Protocol
WebSocket wire protocol specification
For Stakers
Stake XNT to receive aXNT, a liquid staking token that earns base staking rewards plus MEV yield from the AXIO block engine.