Update custom column
well_update_custom_columnUpdate an existing custom column in the current workspace.
Use this tool when the user asks to rename a column, change its rules, its formula, its format config, or its icon.
REQUIRED: custom_column_id OPTIONAL (only include fields the user wants changed): name, type (one of text, number, amount, date, boolean, single_select, multi_select, record_reference, ai), reference_target, reference_targets, is_multiple, position, icon, rules_config, formula_config, format_config
A change to record_reference also names the root the values point at: one
root in reference_target, or two or more in reference_targets when a
cell may name records of several roots (for example people and companies).
Send one of the two, never both; no other type takes one. A column of people
is a person column. is_multiple (record_reference only) is true when one
cell holds a list of records. While a cell holds a value, a change that drops
a root or switches between one record and a list is refused; those cells are
cleared first.
CRITICAL SIDE EFFECT — recompute on config edit:
Editing rules_config, formula_config, or format_config triggers an automatic
recompute of EVERY row in this view (potentially expensive — proportional to
the number of rows × the cost per AI call). Only edit these fields when the
user explicitly asks to change column behavior. For pure cosmetic edits
(rename, icon), pass only name or icon and leave the configs alone.
Returns { success: true, custom_column_id, name } on success, or { success: false, error } on failure.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| icon | No | Optional Lucide icon name; pass null to clear | |
| name | No | Column header label | |
| type | No | Column data type | |
| position | No | Position within the view (0-indexed). Usually managed by drag-and-drop, not chat. | |
| is_multiple | No | For a record_reference column only: true when one cell holds a list of records, false (the default) when it holds one | |
| rules_config | No | AI rules config; pass null to clear | |
| workspace_id | No | Target workspace. Omit when the token authorizes one workspace. Required when it authorizes several — a write lands in exactly one workspace and this call would not say which. | |
| format_config | No | Format config; pass null to clear | |
| formula_config | No | Formula config; pass null to clear | |
| conversation_id | No | The conversation id returned by the previous Well result, in its meta under well/conversation_id, in its structuredContent, or in its JSON text block. Pass it back on every call in the same conversation, including a call a card makes, so the chosen workspace and the earlier answers still apply. It decides the conversation on its own: nothing the host states about the session replaces it. Omit it only on the first call of a conversation. | |
| idempotency_key | No | Optional client-supplied key. A retried write with the same key returns the original result instead of re-applying the operation. | |
| workspace_scope | No | Restrict this call to the family: the token's primary workspace plus the company workspaces under it that you are a member of. Unrelated authorized workspaces drop out of the read; row reads merge across the family, while a per-workspace figure still reports exactly one workspace. | |
| custom_column_id | Yes | The UUID of the custom column to update (required) | |
| reference_target | No | The root a record_reference column points at, one of: account_balances, accounts, activities, companies, documents, employment_contracts, invoices, journal_entries, journals, ledger_accounts, notes, payment_means, payslips, people, products, projects, subscriptions, tasks, transactions. Required for type=record_reference, refused for every other type. A column targeting people is a person column | |
| reference_targets | No | For a record_reference column whose cells may name records of several roots (a polymorphic link, for example people and companies): every root, two or more. Use in place of reference_target, never with it |
Output Schema
| Name | Required | Description | Default |
|---|---|---|---|
| code | No | ||
| name | No | ||
| error | No | ||
| success | Yes | ||
| reply_lines | No | ||
| conversation_id | No | The conversation this result belongs to. Pass it back as the conversation_id argument on every later Well call in the same conversation. | |
| near_candidates | No | ||
| newly_connected | No | Tools that connected to this workspace since the last result and that no session was told about yet, oldest first. Present only when at least one tool is new. The connected-line rule says when to tell an entry; when it does, one line per entry, in the person's language: "<name> is connected.". Never fold several entries into one sentence. Each entry comes back once, on one result only: never repeat its line later. | |
| custom_column_id | No | ||
| conversation_id_note | No | Present only when the server opened a fresh lane, stating that no choice recorded earlier was read. | |
| conversation_id_source | No | Where the conversation id came from: the host's own request meta, the caller's argument, or a fresh lane the server opened. | |
| near_candidates_truncated | No |