---
title: "Early-buyer quality for up to 20 RHC tokens (BASIC+)"
method: POST
path: "/rhc/tokens/batch/buyer-quality"
tags: ["Robinhood Chain"]
---

# Early-buyer quality for up to 20 RHC tokens (BASIC+)

`POST /rhc/tokens/batch/buyer-quality`

## Request

- Base URL: `https://madeonsol.com/api/v1`
- URL: `https://madeonsol.com/api/v1/rhc/tokens/batch/buyer-quality`
- Auth: HTTP bearer

Scores several tokens' earliest-buyer cohorts in one call. **The cap is 20, not the Solana 50** — RHC buyer-quality is a per-token cohort computation (ordered early-buyer scan + bundle RPC + alpha/cluster joins) that cannot collapse into one set-based query, so 50 would mean ~200 round-trips behind a single request. A per-token failure degrades to an `error` entry rather than failing the batch. Scores are identical to the single-token endpoint (shared scorer). Tier: **BASIC**.

## Request body

- object
  - `addresses` string[]
  - `mints` string[]: Alias for `addresses`.

## Response `200`

OK.

- object
  - `chain` 'robinhood'
  - `tokens` object[]: Either a scored result or `{ token_address, error }`.
  - `requested` integer
  - `scored` integer
  - `max_addresses` integer
  - `coverage` object

## Other responses

- `400`: Body must be { addresses: string[] } with 1-20 valid 0x addresses. Response echoes `max_addresses`.
- `401`: Missing or invalid API key, or an expired free-tier key. Authentication-stage error: no `X-RateLimit-*` headers, no `_rid`.
- `403`: Forbidden. One of: the key's tier is below this endpoint's or parameter's gate (`tier_required` with an `upgrade` block); the public demo key used outside its allow-list (`demo_key_endpoint_not_allowed`); an invalid or revoked key; an origin-restricted key called from a disallowed origin (`code` `origin_not_allowed` / `origin_required`). `X-RateLimit-*` headers are present only on `tier_required`.
- `429`: Too many requests. Every 429 carries `Retry-After`. A quota 429 (`rate_limit_exceeded`, with `X-RateLimit-*`), a heavy-query concurrency 429 (`error_kind` `concurrency`/`capacity`), or the per-IP authentication-failure block (30 failed auths/min; plain `error` + `retry_after_seconds`, no `X-RateLimit-*`).
- `500`: Unexpected server error from the route (`Internal server error`, with `_rid`). Safe to retry with backoff. A failed API-key lookup is a 503 `auth_backend_unavailable`, never a 500.
- `503`: Temporarily unavailable — a Postgres statement timeout while the dataset is under load or maintenance (`statement_timeout`, with `X-RateLimit-*` and `_rid`), or the API-key lookup itself unavailable (`auth_backend_unavailable`, authentication stage: no `X-RateLimit-*`, no `_rid`, not counted as a failed authentication). Always carries `Retry-After`; honour it.

---

[API](https://skmtc.dev/madeonsol/apis/madeonsol-robinhood-chain-api.md) · [All operations](https://skmtc.dev/madeonsol/apis/madeonsol-robinhood-chain-api/llms.txt) · [OpenAPI document](https://skmtc.dev/madeonsol/apis/madeonsol-robinhood-chain-api/revisions/5db123bfc4d4?raw)