Write .x3
Edit complete mandate and payment examples, then inspect compiler errors and local policy decisions.
The .x3 workspace
Ported directly from a pinned x3lang source commit. The compiler calls Python; the browser labs evaluate policy locally.
Real compiler API
Staged example · illustrative accounts · user-supplied source, not a live model run. Never paste keys or private receipts.
Mutations visibly edit the source. Policy assumes no prior spend and no revocation. Token metadata is a checked-in fixture. No wallet or chain authorization is established.
No current decision
Choose an exercise
Change the payment
Redirect a recipient, raise a cap, change refund terms or remove a nonce. The browser checker evaluates the edited source.
Attack a scoped vault
Run ten offline scenarios covering one allowed control and nine attacks, including replay and budget exhaustion. The session ledger stays in browser memory.
Open Attack LabWhat each result means
The .x3 playground checks a Solana-USDC to NEAR-USDC mandate example. The Attack Lab previews a separate native-test-NEAR vault policy with a 0.2 NEAR payment cap and 0.4 NEAR total budget. It does not compile .x3 or prove that a deployed access key enforces its decision.
Source for the Attack Lab is pinned at X3Lang commit a120169. The branch port preserves its policy module and evidence links. Inspect copied-file hashes and provenance.
Local browser results, real local Sandbox vault transactions, historical public Guard transactions and two-chain testnet delivery are separate evidence classes. Each source guide identifies which one it records.
Wallets and DeFi tools
External tools with their own accounts and terms.
Meteor Wallet
A NEAR wallet for accessing applications across the ecosystem.
RHEA Finance
Explore RHEA's NEAR DeFi application. Review its pool and token details before use.
Operations integrations
These existing services retain their own access controls. A link is not a connected worker or an execution receipt.
NEAR Intents Explorer
Inspect historical 1Click swaps and provider-reported statuses. Explorer records are separate from independent verification of chain finality and settlement.
Open the official ExplorerNEAR Business
Official team treasury application. Its members propose and review financial requests using its own roles and voting rules. A .x3 policy preview does not authorize a treasury payment.
Read the treasury documentation
External service · treasury connection not configured
Control Room
Existing readiness and planning workspace. Owner access may be required. Jobs are planning claims until a real worker returns evidence.
Open existing Control Room ↗Linked · operational controls not ported
Phantom
Scan worker source, authenticated API, authorized target selection and report authenticity are required before scans can run here.
Unverified · no scan started
Radar
Radar's canonical source and data contract have not been identified. No invented targets, live telemetry or test results appear here.
Unverified · no telemetry connected
Eye remains the desktop shell. Open Eye ↗. Port provenance: source commit and file digests.