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deepseek-harness/website/zh-CN/api/harness/session-query.md
2026-07-17 21:19:33 +08:00

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# ctx.sessionQuery
`SessionQueryService` — provided by `@deepseek-ai/dsh-session-query`.
Live-preferred logical-corpus exact-read and relationship-tracing service.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/session-query/session-query/src/index.ts#L38)
### ctx.sessionQuery.listSessions()
```ts website-api
listSessions(): Promise<SessionRecord[]>
```
List the complete logical corpus using live-preferred records.
**Returns** deterministic newest-first cloned session records.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/session-query/session-query/src/index.ts#L63)
### ctx.sessionQuery.listEvents(sessionId)
```ts website-api
async listEvents(sessionId: SessionId): Promise<SessionEventRecord[]>
```
List lightweight raw-log event records for one logical session.
- `sessionId` — live-preferred session id to read.
**Returns** event records in ascending seq order.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/session-query/session-query/src/index.ts#L72)
### ctx.sessionQuery.traceSession(sessionId)
```ts website-api
async traceSession(sessionId: SessionId): Promise<SessionLineageTrace>
```
Trace known ancestry and descendants from one corpus observation.
- `sessionId` — logical session id to trace.
**Returns** a complete lineage or an explicit unresolved parent boundary.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/session-query/session-query/src/index.ts#L83)
### ctx.sessionQuery.traceEvent(request)
```ts website-api
async traceEvent(request: SessionEventTraceRequest): Promise<SessionEventTrace>
```
Trace one event's direct positional and provenance relationships.
- `request` — target session id and event seq.
**Returns** direct links plus the target's positional replacement chain.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/session-query/session-query/src/index.ts#L94)
### ctx.sessionQuery.readEvent(request)
```ts website-api
async readEvent(request: SessionEventReadRequest): Promise<SessionEventWindow>
```
Read one full event plus a bounded raw-log context window.
- `request` — target session/seq and context sizes.
**Returns** cloned target and neighboring events.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/session-query/session-query/src/index.ts#L104)