---
title: "Signal Scorecard — out-of-sample efficacy"
method: GET
path: "/signals/{name}/performance"
tags: ["Alpha"]
---

# Signal Scorecard — out-of-sample efficacy

`GET /signals/{name}/performance`

## Request

- Base URL: `https://madeonsol.com/api/v1`
- URL: `https://madeonsol.com/api/v1/signals/{name}/performance`
- Auth: HTTP bearer

Live, OOS backtest for an enrichment signal: per-bucket hit rate, base rate, and lift. `?history=true` adds the per-day series. Open to any authenticated tier.

## Query parameters

- `history` boolean

## Response `200`

OK

- object
  - `signal` string
  - `buckets` object[]
    - `bucket` string
    - `hit_rate` number, nullable
    - `base_rate` number, nullable
    - `lift` number, nullable
    - `sample_n` integer
  - `note` string, nullable: Present (with an empty buckets array) when no performance data has been computed yet
  - `metric_type` string: Omitted when note is present
  - `outcome` string: Omitted when note is present
  - `window_days` integer: Omitted when note is present
  - `base_rate` number, nullable: Omitted when note is present
  - `test_from` string, nullable: Omitted when note is present
  - `test_to` string, nullable: Omitted when note is present
  - `as_of` string, date-time: Omitted when note is present
  - `methodology` string: Omitted when note is present
  - `history` object[], nullable: Present only when ?history=true. One entry per computed_at snapshot, newest first, up to 90.
    - `as_of` string, date-time
    - `buckets` object[]
      - `bucket` string
      - `hit_rate` number, nullable
      - `lift` number, nullable
      - `sample_n` integer

## Other responses

- `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`.
- `404`: Unknown signal
- `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`: The API-key or subscription lookup could not be answered (authentication stage). Retryable and not your fault: it is never counted as a failed authentication. Honour `Retry-After`; no `X-RateLimit-*`, no `_rid`.

---

[API](https://skmtc.dev/madeonsol/apis/madeonsol-api.md) · [All operations](https://skmtc.dev/madeonsol/apis/madeonsol-api/llms.txt) · [OpenAPI document](https://skmtc.dev/madeonsol/apis/madeonsol-api/revisions/96ce84657f55?raw)