# Beagle Scout — Investigation Companion

> Beagle Scout — Investigation Companion is a paid API for AI agents from underground.substratesymposium.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-14).

Provides an investigation companion experience focused on following leads, finding connections, and developing a curious, detail-oriented mindset for exploratory research tasks.

## Facts

- Endpoint: GET https://underground.substratesymposium.com/buy/scout?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/beagle-scout-investigation-companion-a1d2fbd8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j5fyeH0Bn2robvk0F0KsR

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 beagle-scout-investigation-companion-a1d2fbd8
```

Example prompt: I'm trying to trace connections between a set of clues I've uncovered and I need a scouting companion to help me think through leads — can you pull up the Beagle Scout investigation companion from Substrate Symposium?

## When to prefer this

Choose this endpoint when an agent or user needs a structured companion experience for open-ended investigation, lead-following, and connection-finding — particularly when the goal is to develop an exploratory, detective-style research mindset rather than looking up a specific fact. It is especially useful for creative or analytical agents that need a reflective framework for scouting unfamiliar domains.

## Known failure modes

- HTTP 402 Payment Required if x402 payment of $0.01 USDC is not provided
- Empty or minimal response if no query parameters are supplied and defaults produce no content
- Service unavailability if underground.substratesymposium.com is unreachable
- Unexpected content format if the output schema type field yields an unrecognized structure

## How this service works

Beagle — Scout — Investigation companion for following leads and finding connections.

## Output

Returns a companion experience — likely narrative or framework content — centered on the Beagle Scout persona, providing investigation methodology, lead-following heuristics, and connection-finding guidance to support exploratory research and analytical tasks.

## 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",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/beagle-scout-investigation-companion-a1d2fbd8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from underground.substratesymposium.com](https://www.zero.xyz/host/underground.substratesymposium.com/llms.txt)