# Soren Chain Transaction Lookup

> Soren Chain Transaction Lookup is a paid API for AI agents from soren.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Fetches live transaction details (from, to, value, block) from Base mainnet by transaction hash, returning found:false if not found.

## Facts

- Endpoint: GET https://soren.com/v1/chain/tx
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/soren-chain-transaction-lookup-b0f1bc27
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_75Ol9IZ8AKvwg2j8vr4eE

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 soren-chain-transaction-lookup-b0f1bc27
```

Example prompt: Can you look up the Base mainnet transaction 0x731e0553663993c778025a6df7ce5a7e8b0b8f0b2a2ced3782802c54d230b757 and tell me who sent it, who received it, how much was transferred, and which block it landed in?

## When to prefer this

Use this endpoint when you need a live, real-time read of a single Base mainnet transaction by hash and do not need a signed/attested proof. Choose the sibling /v1/oracle/onchain endpoint instead if you require a cryptographically signed, attestable result. This endpoint is cheaper and faster for straightforward lookups where a plain unsigned answer is sufficient.

## Known failure modes

- Transaction hash not found on Base mainnet — returns found:false
- Invalid or malformed hash (not 32-byte hex) — likely 4xx error
- Network or RPC unavailability causing read failure
- Payment failure (wallet insufficient funds) — no charge on failed read

## How this service works

Read a transaction by hash: from, to, value, block, or found:false, live from Base mainnet, for a fraction of a cent. No API key, no account — a wallet is the only requirement, and you are charged only if the read succeeds. Plain unsigned data; the attested version of chain reads is /v1/oracle/onchain. Answers are read at the moment of the call and stamped with the block they came from where applicable.

## Output

Returns a JSON object containing the transaction's from address, to address, value, and block number if found, or found:false if the transaction hash does not exist on Base mainnet. The response is stamped with the block at which the read was performed.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "enum": [
      "GET"
     ]
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "hash": {
       "type": "string",
       "description": "The 32-byte transaction hash.",
       "examples": [
        "0x731e0553663993c778025a6df7ce5a7e8b0b8f0b2a2ced3782802c54d230b757"
       ]
      }
     },
     "required": [
      "hash"
     ]
    }
   },
   "required": [
    "type",
    "method"
   ],
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/soren-chain-transaction-lookup-b0f1bc27/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from soren.com](https://www.zero.xyz/host/soren.com/llms.txt)