SVM Warp ALT Management

Manage the on-chain Address Lookup Tables (ALTs) that a Sealevel warp route uses to compress its account list into a v0 VersionedTransaction. Fee-enabled SVM warp transfers reference 40+ accounts (core + fee + IGP + token plugin) and exceed Solana's 1232-byte transaction size limit without ALTs.

Wraps the hyperlane warp alt command group (typescript/cli/src/commands/warp-alt.ts): create, check, read.

When to Use

• Right after deploying a new SVM warp route (/warp-deploy-init-route), extending one, or upgrading an SVM program (/svm-warp-program-upgrade) — ALTs must be (re)created.
• SVM transfers fail with transaction-too-large / too-many-accounts errors.
• "check the ALTs for <route>" / "are the lookup tables up to date?" → check.
• "show me the ALT contents for <route>" → read.

Model

Each Sealevel chain in the route has, in the registry warp config under options.sealevel.altAddresses.<chain>:

• core — one chain-shared ALT (mailbox/core accounts, reusable across routes on that chain).
• warpSpecific — an array (min 1) of route-specific ALTs (this route's token/fee/IGP accounts).

ALTs are created on-chain, populated, then frozen. Frozen tables are immutable and their rent cannot be reclaimed — you never "edit" an ALT, you create a fresh one and update the registry pointer. This is why --force/--full-force leak the old (frozen) tables: they create new ones and abandon the old, unrecoverable ones.

Commands

All commands run from typescript/cli and require --warp-route-id. --chain is optional and scopes to a single chain (defaults to all Sealevel chains in the route). create needs write context (--key.sealevel + private RPC via HTTP registry); check and read are read-only.

create — build + persist ALTs

cd <MONOREPO_ROOT>/typescript/cli && pnpm --silent hyperlane warp alt create \
  --registry http://localhost:<port> \
  --key.sealevel "$SEALEVEL_KEY_VAR" \
  -w <WARP_ROUTE_ID> \
  [--chain <chain>]

• Default (no flags): creates ALTs only where the registry has none. Existing entries are left as-is.
• --force / -f: recreate the warp-specific ALTs for chains that already have registry entries; the chain-shared core ALT is reused. Old warp-specific frozen ALTs are leaked (unrecoverable).
• --full-force / -F: recreate all ALTs including core. Implies --force. All old frozen ALTs leaked.
• Writes the resulting ALT addresses back to the registry warp config (options.sealevel.altAddresses).

Use plain create after a fresh deploy. Use --force after an upgrade/extend that changed the route-specific account set. Reserve --full-force for when the core ALT itself is wrong — it's the most wasteful (leaks the shared table too).

check — verify on-chain ALTs match expected

cd <MONOREPO_ROOT>/typescript/cli && pnpm hyperlane warp alt check \
  --registry http://localhost:<port> \
  -w <WARP_ROUTE_ID> \
  [--chain <chain>]

Compares on-chain ALT contents against the expected account set for the route. Exits non-zero on drift — treat a non-zero exit as "ALTs are stale, recreate them". check reports core and warpSpecific drift separately, and the fix differs by bucket: recreate warpSpecific drift with create --force (reuses the shared core ALT); recreate core drift (including an unfrozen core) with create --full-force. Do NOT use --force for a core diff — it reuses the existing core, so the core stays broken and the next check still fails. Report the specific diff and its bucket to the user.

read — dump ALT contents

cd <MONOREPO_ROOT>/typescript/cli && pnpm hyperlane warp alt read \
  --registry http://localhost:<port> \
  -w <WARP_ROUTE_ID> \
  [--chain <chain>] \
  [--out <file.yaml>]

Read-only. Prints (or writes) the current on-chain ALT addresses and their entries. No key needed.

Execution Flow

1. Start the HTTP registry per /start-http-registry (needed for private Sealevel RPC; add --writeMode for create, omit for check/read). Note the port + task ID.
2. Run the requested subcommand (create / check / read) against --registry http://localhost:<port>.
3. For create: after success, confirm the registry warp config now has options.sealevel.altAddresses.<chain>.{core,warpSpecific} and follow with a check to prove no drift.
4. Stop the HTTP registry per /stop-http-registry, even on failure.
5. If create mutated the registry, open a registry PR with the updated warp config (the altAddresses block) so the ALT pointers are canonical.

Caveats

• ALTs are frozen and unrecoverable. Never assume you can reclaim rent or mutate a table. --force/--full-force intentionally abandon old frozen tables — only use them when the account set actually changed.
• Always create ALTs after any deploy/extend/upgrade of an SVM route. Missing or stale ALTs are the usual cause of transaction-too-large failures on fee-enabled SVM transfers.
• check exit code is the signal — non-zero = drift; don't ignore it. Recreate and re-check.
• Core vs warp-specific: match the fix to the drift bucket check reports — --force for warpSpecific drift (keeps the shared core ALT), --full-force for core drift. A --force won't touch the core, so using it on a core diff leaves the check failing.
• create needs write context and a funded --key.sealevel; check/read do not.