Lit Protocol · TEE-secured compute

Read anywhere.
Compute in a TEE.
Write to any chain or API.

One programmable runtime. Pulls data from any source, runs your logic inside a chain-secured TEE, signs on any chain or API — with no backend to trust.

READ
APIs · RPCs · feeds · prices
COMPUTE
Your JavaScript, in a TEE
WRITE
EVM · SVM · BTC · Cosmos · HTTPS
What it looks like

One file. Reads, computes, signs across chains.

A Lit Action is JavaScript that runs inside the network's TEE. Deploy it once. Sign with a wallet bound to the action code itself, or with one you control through your own on-chain governance.

rebalance.action.ts
// Inside a Lit Action — runs in a chain-secured TEE

// Read off-chain
const price = await fetch(
  "https://api.coinbase.com/v2/prices/ETH-USD/spot"
).then(r => r.json());

// Read on-chain (Base)
const base = new ethers.providers.JsonRpcProvider(BASE_RPC);
const vault = new ethers.Contract(vaultAddress, vaultAbi, base);
const ratio = await vault.currentRatio();

// Decide, then sign + broadcast on Arbitrum
if (Number(price.data.amount) * Number(ratio) < threshold) {
  const pk = await Lit.Actions.getLitActionPrivateKey();
  const arb = new ethers.providers.JsonRpcProvider(ARB_RPC);
  const wallet = new ethers.Wallet(pk, arb);
  const hook = new ethers.Contract(hookAddress, hookAbi, wallet);
  const tx = await hook.rebalance();
  Lit.Actions.setResponse({ response: tx.hash });
}
Why TEE, not consensus

Speed of a backend, trust of a contract. A chain-secured enclave.

Most cross-chain infra forces a tradeoff: trust a multisig, or wait for slow consensus on every read. Lit takes a different path. Code runs inside a TEE — an enclave the hardware itself cryptographically attests to. Keys never leave. Logs can't be rewritten.

The TEE's identity, its allowed code, and its signing authority are all governed on-chain. You get the speed and expressiveness of a single trusted runtime, with the auditability and on-chain governability of a smart contract.

The properties

Decentralized where it matters.
Fast where it has to be.

Latency
Sub-second signing
Auditability
Code hash on-chain
Pricing
$0.01 per second
Surface
Any HTTP, any chain
Patterns shipping today

Things people are building right now.

Cross-chain token
Lit checks burn events on one chain and signs the matching mint on another — permissionless bridging, any chain.
Custom price oracle
Aggregate any combination of CEX + DEX feeds, sign once, deliver to multiple chains.
Prediction market resolver
Poll one or more LLMs in a TEE, sign the consensus, post it on-chain — no UMA, no dispute window.
Compliance-gated transfers
Lit Action screens every recipient against a sanctions list before signing — flagged wallets simply can’t receive.

Read. Compute. Write.
Anywhere.

One programmable runtime for everything that has to happen between an event and a signed action.