---
title: "Get Retriever Signals"
method: GET
path: "/v1/analytics/retrievers/{retriever_id}/signals"
tags: ["Analytics", "Analytics - Retrievers"]
---

# Get Retriever Signals

`GET /v1/analytics/retrievers/{retriever_id}/signals`

Get retriever signals for interaction tuning.

Retrieves fine-grained signals about retriever behavior:
- Cache hits/misses
- Reranking scores
- Filter effectiveness
- Query expansion results

**Signal Types:**
- `cache_hit`: Successful cache lookups
- `cache_miss`: Cache misses requiring full search
- `rerank_scores`: Reranking effectiveness metrics
- `filter_reduction`: Pre-filter document reduction
- `expansion_results`: Query expansion impact

**Use Cases:**
- Fine-tune retrieval parameters
- Analyze query patterns
- Optimize cache strategies
- Validate optimization improvements

**Example:**
```bash
curl -X GET "https://api.mixpeek.com/v1/analytics/retrievers/ret_abc123/signals?signal_type=rerank_scores&limit=50" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "X-Namespace: your-namespace"
```

## Path parameters

- `retriever_id` string, required

## Query parameters

- `signal_type` string, nullable — Filter by signal type (cache_hit, rerank_scores, etc.)
- `limit` integer — Maximum results
- `hours` integer — Hours of history

## Response `200`

Successful Response

- RetrieverSignal[]
  - `timestamp` string, date-time, required — Event timestamp
  - `execution_id` string, required — Execution identifier
  - `signal_type` string, required — Type of signal
  - `signal_data` object, required — Signal-specific data
  - `metadata` object, nullable — Additional metadata

## Other responses

- `400` — Bad Request
- `401` — Unauthorized
- `403` — Forbidden
- `404` — Not Found
- `422` — Validation Error
- `500` — Internal Server Error

---

[API](https://skmtc.net/mixpeek/apis/mixpeek-api.md) · [All operations](https://skmtc.net/mixpeek/apis/mixpeek-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/mixpeek/mixpeek-api/revisions/1c7f31821424/schema)