Retrieve a memory version changedapi/beta/memory_stores/memory_versions/retrieve
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160160 - `created_at: string`
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162 A timestamp in RFC 3339 format
162 When this version was written, in RFC 3339 format.
163163
164164 format: date-time
165165
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173173
174174 - `operation: BetaManagedAgentsMemoryVersionOperation`
175175
176 The kind of mutation a `memory_version` records. Every non-no-op mutation to a memory appends exactly one version row with one of these values.
176 The kind of mutation this version records: `created`, `modified`, or `deleted`.
177177
178178 - `"created"`
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from line 203
203203
204204 - `created_by: optional BetaManagedAgentsActor`
205205
206 Identifies who performed an operation. Recorded when the operation happens and not updated afterwards, so the ID may refer to a user, service account, API key, or session that has since been deleted.
206 Who performed this write: one of `session_actor`, `api_actor`, `user_actor`, or `service_account_actor`; `null` when no writer is recorded. Captured at write time and preserved through redaction. A `session_actor` is an agent writing through the store's mounted filesystem at `/mnt/memory/`. The API key that created that session is not recorded on agent writes, so attribution names who made the write, not who is ultimately responsible; look up session provenance via the [Sessions API](/docs/en/api/beta/sessions/retrieve).
207207
208208 - `BetaManagedAgentsSessionActor object`
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from line 259
259259
260260 - `redacted_at: optional string or null`
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262 A timestamp in RFC 3339 format
262 When this version was redacted, in RFC 3339 format, or `null` if it has not been redacted. When set, `content`, `path`, `content_size_bytes`, and `content_sha256` are all `null`. See [Redact a memory version](/docs/en/api/beta/memory_stores/memory_versions/redact).
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264264 format: date-time
265265
266266 - `redacted_by: optional BetaManagedAgentsActor`
267267
268 Identifies who performed an operation. Recorded when the operation happens and not updated afterwards, so the ID may refer to a user, service account, API key, or session that has since been deleted.
268 Who redacted this version, or `null` if it has not been redacted. In practice always an `api_actor`, `user_actor`, or `service_account_actor` (agents do not have a redact capability).
269269
270270## Example
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