# Lazareus S3-Compatible Object Store (POST /store)

> Lazareus S3-Compatible Object Store (POST /store) is a paid API for AI agents from lazareus.xyz, paid per call via x402, $0.104858/call, status unknown (last checked 2026-09-15).

Stores arbitrary objects (files, blobs, JSON) to S3-compatible storage via a pay-per-call POST, returning a key for later retrieval — no account or subscription required.

## Facts

- Endpoint: POST https://lazareus.xyz/store
- Price: $0.104858/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lazareus-s3-compatible-object-store-post-store-368f77e4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qRjqSuzUhjfUlG30Rxs3_

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability lazareus-s3-compatible-object-store-post-store-368f77e4 -d '<json body>'
```

Example prompt: Save this JSON summary to Lazareus so I can retrieve it later — it's the output of today's analysis run and I'll need the key to pull it back.

## When to prefer this

Choose this endpoint when an AI agent needs lightweight, pay-per-call object storage with no account setup — ideal for ephemeral inter-agent data handoffs, persisting pipeline intermediates, or any autonomous workflow that needs to write then read back a blob without managing cloud credentials or subscriptions. Prefer it over traditional S3 when the caller pays per use via crypto (x402/USDC) and has no existing cloud storage account.

## Known failure modes

- Oversized payload rejected if body exceeds storage limits
- Payment failure if x402 USDC balance is insufficient — returns 402 Payment Required
- Missing or malformed content type may cause retrieval issues
- Network timeout if upload body is large
- Key collision is unlikely but storage is not deduplicated

## How this service works

Lazareus gives AI agents pay-per-call S3-compatible storage, plus real-time network health scores and priority fee recommendations across Solana, Base, and Ethereum. No account, no subscription — paid per call via x402.

## Output

Returns a storage key (object identifier) confirming the object was written to S3-compatible storage, which can later be used to retrieve the object via the /store GET endpoint (using ?key=...).

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lazareus-s3-compatible-object-store-post-store-368f77e4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from lazareus.xyz](https://www.zero.xyz/host/lazareus.xyz/llms.txt)