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THE IDEA
A tiny server-side library that serializes writes from one wallet, batches them via mutateEntities, dedupes with idempotency keys, and returns retryable receipts.
The problem today
- One wallet = one nonce. Firing concurrent writes (or a raw Promise.all) from a server collides on the nonce and fails.
- The fix is batching with mutateEntities + a write queue, but every team re-implements it from scratch.
- Without idempotency, a retry after a timeout creates duplicate entities.
What it would do
- Serializes writes from a single signer so the nonce never collides.
- Coalesces queued writes into mutateEntities batches (up to 1000 ops/tx) for throughput and cost.
- Idempotency keys: a retried write is deduped, not duplicated.
- Returns receipts (tx hash + entity keys) you can persist and reconcile.
WHY IT’S A BETTER EXPERIENCE
- Server-side Arkiv writes become boring and reliable instead of a nonce-debugging session.
- Batching is both faster and cheaper — throughput and GLM in one move.
- Idempotency is the difference between "retry safely" and "corrupt your data on a timeout."
HOW IT COMPARES
DIY Promise.all (the trap)what people try first — it collides on the nonce. This is the correct alternative.
Generic job queues (BullMQ…)don't know Arkiv: nonce, mutateEntities batching, entity receipts. This one does.
The write-safety skillteaches the pattern; this library enforces it in running code.
FEASIBILITY — AND WHY THIS ISN’T HAND-WAVING
Medium to build
A focused library over the existing SDK. The write-safety skill already teaches the pattern; this ships it as code.
Grounded in
- Nonce collision from looping/concurrent single writes is confirmed in the MCP tool guidance and the write-safety skill.
- mutateEntities 1000-op/tx batching is a verified SDK capability.
- Batch write path verified live on Braga.
PAIRS WITH