# Saylor Innovations — EVM Base Contract Storage Slot 0 Reader

> Saylor Innovations — EVM Base Contract Storage Slot 0 Reader is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Reads storage slot 0 of a smart contract deployed on the Base EVM-compatible blockchain

## Facts

- Endpoint: GET https://saylorinnovations.com/api/evm/base/storage/:address/0?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-evm-base-contract-storage-slot-0-reader-aa770db2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gCc3NKnuUv0yEERevh6Mq

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 saylor-innovations-evm-base-contract-storage-slot-0-reader-aa770db2
```

Example prompt: What's the raw value stored in storage slot 0 of the contract at 0x4200000000000000000000000000000000000006 on the Base blockchain?

## When to prefer this

Choose this endpoint when you need to directly read the raw on-chain storage value at slot 0 of a specific contract on the Base network, particularly for debugging contract state, verifying proxy implementations, or inspecting low-level EVM storage without calling a contract function. Prefer this over ABI-based contract calls when you don't have the ABI or need the raw bytes rather than a decoded value.

## Known failure modes

- Invalid or malformed contract address returns an error or zero value
- Contract does not exist at the given address on Base — may return zero bytes rather than an error
- Network congestion or RPC node issues may cause timeouts
- Slot 0 may be uninitialized (returns 0x0000...0000) if the contract uses a different storage layout
- Address is an EOA (externally owned account) rather than a contract — returns empty storage

## How this service works

Contract Storage Slot (base). Base contract storage slot read: raw 32-byte value plus uint and address decodings.

## Output

Returns the raw 32-byte value stored at storage slot index 0 of the specified smart contract address on the Base EVM blockchain, representing the on-chain state of that storage position at query time.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-evm-base-contract-storage-slot-0-reader-aa770db2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)