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Won — calls for the model

The edits that followed one memory, oldest first

POST/api/v1/memory/lineage

In the SDKs: lineage

/won/revisions says how much a store moved; this says what happened to one fact. The chain runs forward from the id you pass: pass the first version's id to see the whole history; the current version's id comes back alone. is_current marks the version in force.

Authentication

Every call carries your API key in an X-API-Key header. Keys are created in the console.

X-WOS-Modeloptional

Picks the memory model that answers. Omit it and Tablet 2 answers.

Request body

JSON, required. Out-of-range values are refused with a 400 rather than quietly clamped.

user_id string required

The store to operate on. Stores are explicit: create one first or use the built-in "default". Use the id the store was created with: 1-64 ASCII letters, digits, ., _ or -, starting with a letter or digit. Ids that differ only by case name one store.

memory_id string required

Returns

The 200 body. Fields nested one level are shown as parent.child.

user_id string
chain object[]

From the id passed forward, oldest first.

chain.id string
chain.content string
chain.action string

What happened at this step (supersede, update, retract, image removed).

chain.changed_at string
chain.is_current boolean

Example

cURL
curl -X POST https://api.wontopos.com/api/v1/memory/lineage \
  -H "X-API-Key: $WOS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'

Status codes

StatusMeaning
200Success.
401Missing or invalid API key.
404Store (user_id) does not exist. Create it first: POST /api/v1/memory/collection.
429Rate limited (per-account, per-tier RPM). Retry after the indicated delay.
501The selected model’s engine does not implement this endpoint (Tablet 2 and newer do). The message names the model.

Rate limits per tier and the full status list are in Errors & limits.

In the SDKs

The Python, TypeScript, and Rust SDKs wrap this endpoint so you do not build the request by hand — pip install wontopos, npm i wontopos, or cargo add wontopos, then the method list is on the SDK reference. A coding agent can take the whole API in one file at llms.txt, or over MCP with npx -y wontopos-mcp.