Overview

Reley is a per-project, per-session SVM sandbox loaded with real on-chain Solana programs. Clone, patch, replay, and publish a session as a Solana-compatible JSON-RPC endpoint.

What you get

• Clone any program by pubkey. Program, account state, Anchor IDL, transitive PDAs.
• Patch any field on any cloned account. IDL-aware for Anchor, native layouts for SPL Token / Token-2022, raw splices for anything else.
• Replay any historical mainnet transaction by signature. Hydrates at slot - 1, executes, diffs.
• Serve a session as Solana JSON-RPC at localhost:8899/session/<id>. Wire-compatible with @solana/web3.js, Anchor, Phantom dev mode.

Who this is for

Solana program developers, security researchers, integrators, and educators who need to exercise execution paths mainnet authority keys will not give them.

If your program CPIs into a permissioned protocol and you need the admin path, Reley clones the protocol, patches the admin, and lets you run the CPI tree locally.

Where to go next