> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs-beta.getzep.com/v4/sdk-reference/graph/search-thread-summaries/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs-beta.getzep.com/_mcp/server.

# Search thread summaries

POST https://api.getzep.com/api/v4/graphs/{graph_uuid}/search/thread-summaries
Content-Type: application/json

Reference: https://docs-beta.getzep.com/sdk-reference/graph/search-thread-summaries

## Authentication

- `Authorization` header (required) (prefixed with ` Api-Key  `) — Type "Api-Key" followed by a space and the project API key.

## Request

### Path parameters

- `graph_uuid` (string, required) — Graph UUID

### Query parameters

- `limit` (integer, optional) — Page size
- `cursor` (string, optional) — Opaque page cursor

### Body (application/json)

This endpoint expects a v4.SearchRequest.

- `query` (string, required) — The search query.
- `bfs_origin_node_uuids` (list of string, optional) — Nodes used as BFS origins for graph-distance-aware retrieval.
- `center_node_uuid` (string, optional) — The node to rank results by distance from. Required when reranker is node_distance.
- `filters` (v4.SearchFilters, optional) — Filters constraining which items are returned.
- `mmr_lambda` (double, optional) — The diversity weighting used for maximal marginal relevance reranking. Required when reranker is mmr.
- `reranker` (enum, optional) — The reranking strategy applied to retrieved results. Defaults to rrf.
  - Allowed values: `rrf`, `mmr`, `node_distance`, `episode_mentions`, `cross_encoder`

## Response

### 200

OK

- `items` (list of v4.ThreadSummary, optional) — The thread summaries on this page.
- `next_cursor` (string, optional) — The cursor to pass as the next request's cursor to fetch the following page; absent when no further pages remain.
- `total_size` (integer, optional) — Omitted for this collection; use next_cursor to detect the end of pagination.

## Errors

### 400 Bad Request Error

Bad Request

- `error` (v4.ErrorBody, optional)

### 401 Unauthorized Error

Unauthorized

- `error` (v4.ErrorBody, optional)

### 403 Forbidden Error

Forbidden

- `error` (v4.ErrorBody, optional)

### 404 Not Found Error

Not Found

- `error` (v4.ErrorBody, optional)

## Types

### v4.SearchFilters

- `connected_node_uuids` (list of string, optional) — Include edges connected to any of these node UUIDs.
- `content_policy_violated` (boolean, optional) — Match episodes by their content-policy result. Supported only on episode search when the project setting include_policy_violating_episodes is true.
- `date_filters` (v4.DateFilters, optional) — Filter results by temporal values.
- `edge_types` (list of string, optional) — Include results with any of these edge types.
- `edge_uuids` (list of string, optional) — Include results with any of these edge UUIDs.
- `episode_uuids` (list of string, optional) — Include results derived from any of these episode UUIDs.
- `exclude_edge_types` (list of string, optional) — Exclude results with any of these edge types.
- `exclude_node_labels` (list of string, optional) — Exclude results with any of these node labels.
- `metadata_filters` (v4.MetadataFilterGroup, optional) — Filter results by episode metadata.
- `node_labels` (list of string, optional) — Include results with any of these node labels.
- `property_filters` (list of v4.PropertyFilter, optional) — Filter results by node or edge properties.
- `source_node_uuids` (list of string, optional) — Include edges that start at any of these node UUIDs.
- `target_node_uuids` (list of string, optional) — Include edges that end at any of these node UUIDs.

### v4.ThreadSummary

- `created_at` (string, optional) — The time the summary was first created.
- `last_summarized_at` (string, optional) — The wall-clock time of the most recent summary update.
- `last_summarized_episode_valid_at` (string, optional) — The latest episode reference time covered by the most recent summary update.
- `relevance` (double, optional) — A cross-encoder-derived relevance score, present only when the cross-encoder reranker scored this result; like score, it is omitted from plain list results.
- `score` (double, optional) — A score accompanies every search result; it is omitted when the summary appears in a plain list rather than a search result.
- `summary` (string, optional) — The generated summary text for the thread.
- `thread_uuid` (string, optional) — The unique identifier of the thread this summary belongs to.
- `uuid` (string, optional) — The unique identifier of the thread summary.

### v4.ErrorBody

- `code` (string, optional)
- `details` (map from string to any, optional)
- `message` (string, optional)
- `param` (string, optional)
- `request_id` (string, optional)

### v4.DateFilters

- `any_of` (list of v4.DateFilterGroup, optional) — Each group is combined with OR logic.

### v4.MetadataFilterGroup

- `filters` (list of v4.MetadataFilter, optional) — The metadata predicates in this group.
- `groups` (list of v4.MetadataFilterGroup, optional) — The nested metadata groups in this group.
- `type` (enum, optional) — The logical operator for this group.
  - Allowed values: `and`, `or`

### v4.PropertyFilter

- `operator` (enum, optional) — The lowercase comparison operator.
  - Allowed values: `eq`, `ne`, `gt`, `lt`, `gte`, `lte`, `in`, `is_null`, `is_not_null`
- `property_name` (string, optional) — The property name to compare.
- `value` (V4PropertyFilterValue, optional) — The comparison value. Use an array for in. Its string members must be non-empty, contain no comma, and have no surrounding whitespace.

### v4.DateFilterGroup

- `all_of` (list of v4.DateFilter, optional) — All conditions in the group must match.

### v4.MetadataFilter

- `operator` (enum, optional) — The lowercase comparison operator.
  - Allowed values: `eq`, `ne`, `gt`, `lt`, `gte`, `lte`, `in`, `contains`, `is_null`, `is_not_null`
- `property_name` (string, optional) — The metadata property name to compare.
- `value` (V4MetadataFilterValue, optional) — The comparison value. Use an array for in, a non-empty string for contains, and omit the field for null operators.

### V4PropertyFilterValue

The comparison value. Use an array for in. Its string members must be non-empty, contain no comma, and have no surrounding whitespace.

### v4.DateFilter

- `field` (enum, optional) — The temporal field to compare.
  - Allowed values: `created_at`, `valid_at`, `invalid_at`, `expired_at`
- `operator` (enum, optional) — The lowercase comparison operator.
  - Allowed values: `eq`, `ne`, `gt`, `lt`, `gte`, `lte`, `is_null`, `is_not_null`
- `value` (string, optional) — The RFC 3339 timestamp. Omit this field for null operators.

### V4MetadataFilterValue

The comparison value. Use an array for in, a non-empty string for contains, and omit the field for null operators.

## Examples

**Request**

```json
{
  "query": "string"
}
```

**Response**

```json
{
  "items": [
    {
      "created_at": "string",
      "last_summarized_at": "string",
      "last_summarized_episode_valid_at": "string",
      "relevance": 1.1,
      "score": 1.1,
      "summary": "string",
      "thread_uuid": "string",
      "uuid": "string"
    }
  ],
  "next_cursor": "string",
  "total_size": 1
}
```