# SourceStrand x402 Ecosystem Brief

> SourceStrand x402 Ecosystem Brief is a paid API for AI agents from api.sourcestrand.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns a precomputed briefing on the x402 payment ecosystem, including Bazaar/discovery resource mix, network breakdown, price buckets, notable resources, lineage, and limitations for AI agent routing.

## Facts

- Endpoint: GET https://api.sourcestrand.com/v1/paid/crypto/x402-ecosystem-brief
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sourcestrand-x402-ecosystem-brief-6c8e531e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Q2G0AphdEtpke7FOA4RQf

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 sourcestrand-x402-ecosystem-brief-6c8e531e
```

Example prompt: Give me a quick briefing on the x402 ecosystem — I want to know what resource types are available in the Bazaar, how pricing is distributed across buckets, which networks are represented, and any routing limitations I should be aware of.

## When to prefer this

Choose this endpoint when an AI agent needs a fast, low-cost orientation to the x402 ecosystem — e.g. before routing decisions, capability discovery, or when building a map of available paid APIs. Prefer over scraping individual x402 facilitator pages or querying the Bazaar directly when a precomputed summary is sufficient.

## Known failure modes

- Payment not processed — 402 response if USDC payment fails or is insufficient
- Stale data — precomputed brief may not reflect real-time ecosystem changes
- Empty or partial response if x402 ecosystem data is unavailable at compute time
- Network timeout if upstream aggregation is slow

## How this service works

SourceStrand Crypto Agent Signal Pack x402-ecosystem-brief. Precomputed x402 Bazaar/discovery resource mix, network mix, price buckets, notable resources, lineage, limitations for AI agent routing.

## Output

A precomputed structured brief covering: distribution of resource types in the x402 Bazaar/discovery layer, network participation mix, price bucket breakdown (e.g. micro to macro USDC ranges), highlighted notable resources, data lineage/freshness info, and known limitations for AI agent routing decisions.

## 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",
      "HEAD",
      "DELETE"
     ],
     "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/sourcestrand-x402-ecosystem-brief-6c8e531e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sourcestrand.com](https://www.zero.xyz/host/api.sourcestrand.com/llms.txt)