# Stock Peer Companies Lookup (Finnhub via 2s.io)

> Stock Peer Companies Lookup (Finnhub via 2s.io) is a paid API for AI agents from 2s.io, paid per call via x402, $0.0025/call, status unknown (last checked 2026-09-14).

Returns a ranked list of peer ticker symbols for a US-listed stock — companies in the same sector and sub-industry, sourced from Finnhub.

## Facts

- Endpoint: GET https://2s.io/api/stocks/peers
- Price: $0.0025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stock-peer-companies-lookup-finnhub-via-2s-io-c5bfddf1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4hCnvjN8dO8MOAVy4Z0AR

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 stock-peer-companies-lookup-finnhub-via-2s-io-c5bfddf1
```

Example prompt: Pull the peer companies for NVDA — I need a ranked list of comparable stocks in the same sector and sub-industry for a relative valuation analysis.

## When to prefer this

Use this endpoint when you need a quick, structured list of sector/sub-industry peer tickers for comparables analysis, relative valuation, or screening — especially when you already have a US-listed ticker and want Finnhub's curated peer groupings without building your own industry mapping.

## Known failure modes

- Invalid or non-US ticker returns empty peer list or error
- Ticker not found in Finnhub database returns empty results
- Network or payment (x402) failure results in no response
- Very small-cap or OTC tickers may have no recognized peers

## How this service works

Peer companies for a US-listed ticker — other companies in the same sector and sub-industry, useful for comparables, relative valuation, and screening. Pass ticker (optionally grouping to control how peers are grouped); returns a ranked list of peer ticker symbols (the input symbol is usually first). Data by Finnhub.

## Output

A ranked array of ticker symbols representing peer companies in the same sector and sub-industry as the input ticker; the input symbol is typically listed first, followed by the most closely related peers.

## 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",
    "queryParams"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "required": [
      "ticker"
     ],
     "properties": {
      "ticker": {
       "type": "string",
       "description": "US-listed ticker, e.g. AAPL."
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stock-peer-companies-lookup-finnhub-via-2s-io-c5bfddf1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 2s.io](https://www.zero.xyz/host/2s.io/llms.txt)