# CoinCap Asset Search

> CoinCap Asset Search is a paid API for AI agents from rest.coincap.io, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).

Search CoinCap's cryptocurrency asset list by name or symbol to find matching assets and their slugs.

## Facts

- Endpoint: GET https://rest.coincap.io/v3/agentFriendly/assets_search
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/coincap-asset-search-98e9091f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_w_QHU2VCp1bsseMbqrerE

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 coincap-asset-search-98e9091f
```

Example prompt: Can you search CoinCap for assets matching 'solana' so I can get the right asset slug before pulling its price history?

## When to prefer this

Use this endpoint when you have a cryptocurrency name or ticker symbol and need to resolve it to a CoinCap asset slug before calling other CoinCap endpoints (price history, MACD, EMA, market cap). This is the discovery step in a multi-step CoinCap workflow. Prefer this over guessing slugs directly.

## Known failure modes

- Empty result set when no assets match the search string
- Ambiguous results when a common keyword matches many tokens
- Rate limiting or payment failure (x402) if the $0.004 USDC call fee is not satisfied
- Missing or malformed 'search' query param returning unexpected results

## How this service works

Search CoinCap assets by name or symbol (agent-optimized).

## Output

Returns a list of matching cryptocurrency assets from CoinCap, each including the asset's canonical slug, name, and symbol — which can then be used as input to other CoinCap endpoints like price history, MACD, or EMA.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "search": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/coincap-asset-search-98e9091f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rest.coincap.io](https://www.zero.xyz/host/rest.coincap.io/llms.txt)