# RobinX Smart Holders — Token Smart-Holder Rankings on Robinhood Chain

> RobinX Smart Holders — Token Smart-Holder Rankings on Robinhood Chain is a paid API for AI agents from api.robinx.io, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-12).

Returns ranked smart-holder addresses for a given token on Robinhood Chain (chain 4663), scored by their historical on-chain accuracy and deployer track record.

## Facts

- Endpoint: GET https://api.robinx.io/structure/%7Btoken%7D/smart-holders
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/robinx-smart-holders-token-smart-holder-rankings-on-robinhood-chain-b2474e9d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_03GWZ49BnAgMuMmcf6NzV

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 robinx-smart-holders-token-smart-holder-rankings-on-robinhood-chain-b2474e9d
```

Example prompt: Who are the smart holders of token 0xcdfc08a1c1fbafb355645e5ddc32122e5716ca90 on Robinhood Chain — show me their RobinX scores and what percentile they rank as extractors?

## When to prefer this

Use this endpoint when you need to evaluate the quality of a token's holder base on Robinhood Chain specifically, grounded in verifiable on-chain price history rather than social signals. Prefer it over generic holder-list APIs when you want accuracy-weighted reputation scores and extractor percentile rankings rather than raw balance data.

## Known failure modes

- Token address not found on Robinhood Chain (chain 4663) — returns empty data or 404
- Malformed token address in path parameter — returns 400 or validation error
- Insufficient on-chain history for token — may return empty smart_holders array
- Payment failure via x402 — request blocked before processing
- Rate limiting or quota exceeded — 429 response

## How this service works

RobinX grades every X (Twitter) caller and every deployer on Robinhood Chain (chain 4663) against real on-chain price since genesis — who called it early, who chased, whose launches survive. Receipts, not follower counts. Per call over x402, or one line of MCP.

## Output

A JSON object containing a list of smart holder wallet addresses for the queried token, each annotated with a deployer_record score (0–100 integer reflecting historical on-chain accuracy) and an extractor_rank_pct (percentile rank among all extractors on Robinhood Chain).

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "smart_holders": [
    {
     "address": "0xcdfc08a1c1fbafb355645e5ddc32122e5716ca90",
     "deployer_record": {
      "score": 78
     },
     "extractor_rank_pct": 3
    }
   ]
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/robinx-smart-holders-token-smart-holder-rankings-on-robinhood-chain-b2474e9d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.robinx.io](https://www.zero.xyz/host/api.robinx.io/llms.txt)