# BBX Holder Concentration Analysis

> BBX Holder Concentration Analysis is a paid API for AI agents from bbx-trading.vercel.app, paid per call via x402, $0.091938/call, status unknown (last checked 2026-09-16).

Analyzes token holder concentration for a given asset, returning distribution metrics that indicate how concentrated ownership is among top holders

## Facts

- Endpoint: POST https://bbx-trading.vercel.app/api/holder/concentration
- Price: $0.091938/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bbx-holder-concentration-analysis-a0306a9f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_J_VlxBp1urXGyl6ouLkEi

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 bbx-holder-concentration-analysis-a0306a9f -d '<json body>'
```

Example prompt: Can you check the holder concentration for the token at contract address 0xABC123 on Base — I want to know what percentage of supply the top 10 holders control and whether it looks dangerously whale-heavy?

## When to prefer this

Use this endpoint when you need quantitative holder concentration data for a specific token on Base or supported chains — especially for risk assessment before investment, rug-pull screening, or governance analysis. Prefer this over generic blockchain explorers when you need structured, pre-computed concentration scores rather than raw holder lists.

## Known failure modes

- Invalid or unrecognized token contract address returns an error or empty result
- Token with no on-chain holder data returns null metrics
- Rate limiting or payment failure returns 402 or 429 status
- Unsupported blockchain network returns an error
- Very new token with minimal holder history may return incomplete data

## How this service works

BaseBuilder Trading API hub - 20 paid endpoints

## Output

Returns holder concentration metrics including the percentage of total supply held by top N holders, a concentration or Gini-style score, and a breakdown of wallet tiers (whales, mid-tier, retail), enabling assessment of centralization risk.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bbx-holder-concentration-analysis-a0306a9f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bbx-trading.vercel.app](https://www.zero.xyz/host/bbx-trading.vercel.app/llms.txt)