# OneSource TSR Holder Concentration Analytics

> OneSource TSR Holder Concentration Analytics is a paid API for AI agents from api.onesource.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-14).

Returns on-chain holder concentration metrics for The Standard Reserve (TSR) on Robinhood Chain, including HHI score, top owners, branch/charter distribution, and cohort splits.

## Facts

- Endpoint: GET https://api.onesource.io/standard/v1/holders/concentration?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/onesource-tsr-holder-concentration-analytics-d883a1ca
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KYQ2n8fKHFnyPSM9Ae8TV

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 onesource-tsr-holder-concentration-analytics-d883a1ca
```

Example prompt: Pull the current TSR holder concentration report from OneSource — I want to see the HHI score, who the top branch owners are, and how branches are split between the auction and genesis cohorts on Robinhood Chain.

## When to prefer this

Use this endpoint when you need a pre-computed, on-chain concentration analysis of TSR branch holders on Robinhood Chain, including HHI scoring and cohort breakdowns, without having to aggregate raw holder data yourself. Prefer it over raw RPC calls when you want structured analytics ready for display or decision-making. Best suited for governance analysis, risk dashboards, or decentralization audits of The Standard Reserve protocol.

## Known failure modes

- Network unavailable or Robinhood Chain RPC unreachable — may return 503 or empty response
- Payment not processed (x402 / MPP) — returns 402 Payment Required
- Data not yet indexed for latest blocks — as_of_block may lag current tip
- Invalid or missing query parameters — returns 400 Bad Request
- Rate limit exceeded without subscription — returns 429

## How this service works

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. How concentrated Charter and Branch ownership is across wallets, including a standard concentration score and a genesis-versus-auction breakdown.

## Output

Returns a JSON object containing: network and chain ID, the block the data is derived from, a list of top owners with branch counts and share of live branches, HHI concentration score with label, total live branches, unique owner count, burned and live charter counts, and a cohort split (auction/genesis/unknown) showing branches, charters, retirements, and revocations per cohort.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "basis": "derived",
  "network": "robinhood",
  "chain_id": 4663,
  "top_owners": [
   {
    "owner": "0x5977b25419f9c0ddcb2f89fe204955622f4f57ea",
    "branches": 74,
    "charters": 6,
    "share_of_live_branches": 0.1445
   }
  ],
  "as_of_block": 63499000,
  "cohort_split": {
   "auction": {
    "branches": 332,
    "charters": 38,
    "retirements": 11,
    "revocations": 1
   },
   "genesis": {
    "branches": 180,
    "charters": 20,
    "retirements": 3,
    "revocations": 0
   },
   "unknown": {
    "branches": 0,
    "charters": 2,
    "retirements": 0,
    "revocations": 0
   }
  },
  "live_charters": 58,
  "unique_owners": 41,
  "burned_charters": 2,
  "concentration_hhi": 812.4,
  "branch_distribution": [
   {
    "bucket": "1",
    "charters": 12
   }
  ],
  "total_branches_live": 512,
  "concentration_hhi_label": "Herfindahl-Hirschman Index (0-10000 scale) of owner share of live branches; conventionally, <1500 is unconcentrated, 1500-2500 moderately concentrated, >2500 highly concentrated"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/onesource-tsr-holder-concentration-analytics-d883a1ca/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.onesource.io](https://www.zero.xyz/host/api.onesource.io/llms.txt)