Addcustomdataforentity
addCustomDataForEntitySet one custom data key on an entity. value can be any JSON type. If the key is missing it is created; if it exists its value and description are overwritten (an upsert, so repeating the same call changes nothing). Overwriting a key that came from a different source, such as the YAML descriptor, returns 400 unless force=true, and a forced value is replaced again the next time the descriptor is processed.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| key | Yes | Custom data key for the entity | |
| force | No | When true, overrides values that were defined in the catalog descriptor. Will be overwritten the next time the catalog descriptor is processed. | |
| value | Yes | ||
| context | Yes | Explain why you're invoking this tool now and how its output will be used. Then state how this call supports your *overall objective* and fits into your broader plan across all tool calls (e.g., why this tool vs. others, and what step it unblocks). Never share any personal details or sensitive information. | |
| tagOrId | Yes | Entity identifier - can be a tag or CID | |
| session_id | Yes | Session continuity handle, one of two values: the ses_ ID issued for the task underway, or start. This server cannot link your calls between requests on its own, so session continuity travels in this parameter instead. If you were handed a session_id for this task — for example by the agent that spawned you — send that exact value from your first call. Otherwise send start on your first call; the server will issue an opaque correlation ID in the mcp_session field of the result, or in a text block at the start of the result beginning [session_id issued. Then send that exact ses_ value on every later call and hand it to any subagents working the same task. start always begins a new, unrelated task — never send it mid-task. If you send a value this server does not recognize, the result reports it: mcp_session.status of unrecognized, or a text block beginning [session_id unrecognized; re-send the ID issued for this task, or start if none was issued yet. Never invent a ses_ value. | |
| description | No |