# SignalHarness Token Holder Concentration Analyzer

> SignalHarness Token Holder Concentration Analyzer is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Analyzes the concentration of token holders for a given cryptocurrency token, returning a concentration assessment with supporting evidence.

## Facts

- Endpoint: POST https://signalharness.ai/api/agent/services/token_holder_concentration/invoke
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signalharness-token-holder-concentration-analyzer-757ed262
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Q2rl5sWIBCS1k3t1tWmcY

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 signalharness-token-holder-concentration-analyzer-757ed262 -d '<json body>'
```

Example prompt: Can you check the token holder concentration for UNI (Uniswap token) and tell me whether the supply is mostly held by whales or is reasonably distributed?

## When to prefer this

Choose this endpoint when you need a fast, agent-native, pay-per-call assessment of token holder concentration without setting up a full blockchain data pipeline. It is especially useful for DeFi due diligence, rug pull screening, or decentralization audits where you need a structured concentration verdict with an auditable receipt. Prefer it over raw on-chain data tools when you want an interpreted result rather than raw holder lists.

## Known failure modes

- Insufficient or malformed token_holder_request string returns an error or low-confidence result
- Token not found or unrecognized may yield warnings with incomplete concentration data
- Ambiguous token names (e.g. common ticker symbols) may produce evidence_scope limited to caller-supplied data with no on-chain lookup
- Payment failure or insufficient USDC balance prevents execution
- Overly long input exceeding 65,536 characters will be rejected

## How this service works

Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.

## Output

Returns a JSON object containing a holder_concentration assessment (a label or score describing how concentrated token holders are), an evidence_scope field indicating the basis of the analysis (caller-supplied data), any warnings generated during analysis, and a signed receipt with payment details, execution metadata, and a SHA-256 result hash for auditability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "token_holder_request": {
   "type": "string",
   "maxLength": 65536,
   "minLength": 2
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "replay": false,
  "result": {
   "warnings": [
    "Incomplete holder sets produce incomplete concentration metrics."
   ],
   "service_id": "token_holder_concentration",
   "evidence_scope": "caller_supplied_data",
   "holder_concentration": "{\"hhi\":\"0.52\",\"holder_count\":2,\"top_10_share_percent\":\"100\",\"top_1_share_percent\":\"60\",\"total_atomic\":\"100\"}"
  },
  "status": "succeeded",
  "receipt": {
   "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
   "usage": [],
   "status": "succeeded",
   "network": "eip155:8453",
   "artifacts": [],
   "endedAtMs": 0,
   "latencyMs": 0,
   "paymentId": "example-payment",
   "receiptId": "example-receipt",
   "requestId": "example-request",
   "serviceId": "token_holder_concentration",
   "executionId": "example-execution",
   "startedAtMs": 0,
   "amountAtomic": "10000",
   "resultSha256": "41774a6931df6a07e22e7bd670b13b087965106564f11f80308f2889255f7c7d",
   "serviceVersion": "1.0.0",
   "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
  },
  "artifacts": [],
  "requestId": "example-request",
  "executionId": "example-execution"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signalharness-token-holder-concentration-analyzer-757ed262/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from signalharness.ai](https://www.zero.xyz/host/signalharness.ai/llms.txt)