# Saylor Innovations Safe Multisig Inspector

> Saylor Innovations Safe Multisig Inspector is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).

Returns Gnosis Safe wallet metadata for a given address on one of 16 EVM chains, including owners, signature threshold, contract version, nonce, singleton, and enabled modules.

## Facts

- Endpoint: GET https://saylorinnovations.com/api/chain/safe-info?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-safe-multisig-inspector-4793738c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_odp-TuPCsn1H7Obrsb4wm

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-safe-multisig-inspector-4793738c
```

Example prompt: Can you check the Gnosis Safe at 0xAbC123...def on Ethereum and tell me who the owners are, how many signatures are required, and what version the contract is?

## When to prefer this

Choose this endpoint when you need on-chain Safe multisig metadata across any of 16 supported EVM networks in a single standardized call. Ideal when you need to verify Safe ownership, threshold, or module configuration before executing a transaction or performing a security audit. Prefer over manual RPC calls or chain-specific block explorers when you want normalized output across chains like Ethereum, Base, Arbitrum, Optimism, Polygon, BSC, Avalanche, Gnosis, Linea, Scroll, Mantle, Blast, Sonic, Celo, Berachain, and Unichain.

## Known failure modes

- Address is not a deployed Safe contract — is_safe returns false with a plain-language note
- Invalid or unrecognized chain name/ID — request fails or returns an error
- Contract not deployed on the specified chain — is_safe false
- Malformed address format — validation error
- Network RPC unavailability for a specific chain — timeout or upstream error

## How this service works

Safe multisig inspector for 16 EVM chains: owners, signature threshold, contract version, nonce, singleton and number of enabled modules.

## Output

Returns a JSON object with: chain name and chain ID, the queried address, a boolean is_safe flag, owner addresses (up to 50), signature threshold, Safe contract version, nonce (number of executed transactions), singleton implementation address, count of enabled modules, a plain-language note summarizing the result, and the data source.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "chain",
      "address"
     ],
     "properties": {
      "chain": {
       "type": "string",
       "description": "chain name (ethereum, base, arbitrum, optimism, polygon, bsc, avalanche, gnosis, linea, scroll, mantle, blast, sonic, celo, berachain, unichain) or chain id"
      },
      "address": {
       "type": "string",
       "description": "the Safe (Gnosis Safe) wallet address"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "chain",
      "chain_id",
      "address",
      "is_safe",
      "note",
      "source"
     ],
     "properties": {
      "note": {
       "type": "string",
       "description": "plain-language reading of the result"
      },
      "chain": {
       "type": "string",
       "description": "the chain name that was queried"
      },
      "nonce": {
       "type": [
        "number",
        "null"
       ],
       "description": "number of transactions executed"
      },
      "owners": {
       "type": [
        "array",
        "null"
       ],
       "description": "owner addresses (up to 50)"
      },
      "source": {
       "type": "string",
       "description": "where the data was read from or how it was computed"
      },
      "address": {
       "type": "string",
       "description": "the Safe address queried"
      },
      "is_safe": {
       "type": "boolean",
       "description": "true when the contract answers like a Safe"
      },
      "version": {
       "type": [
        "string",
        "null"
       ],
       "description": "Safe contract version"
      },
      "chain_id": {
       "type": "number",
       "description": "EIP-155 chain id of that network"
      },
      "singleton": {
       "type": [
        "string",
        "null"
       ],
       "description": "implementation the Safe proxy points at"
      },
      "threshold"
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-safe-multisig-inspector-4793738c/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)