Sample - Plaid API
POST/signal/prepare

Prepare an Item for Signal

Triggers data collection for an Item that was not initialized with Signal Transaction Scores. Use this endpoint before the first /signal/evaluate call when signal was added as an additionally consented product but is not initialized on the Item. Calling it for an already initialized Item returns successfully without modifying that Item.

  • RetriesRetries up to 2×, 500ms backoff, 30s timeout.

3 body fields

The Item access token to prepare for Signal data collection.

client_idstringoptional
Your Plaid API `client_id`. The `client_id` is required and may be provided either in the `PLAID-CLIENT-ID` header or as part of a request body.
secretstringoptional
Your Plaid API `secret`. The `secret` is required and may be provided either in the `PLAID-SECRET` header or as part of a request body.
access_tokenstringrequired
The access token associated with the Item for which data is being requested.

2 status codes
200Returns a `request_id` confirming that preparation completed or that the Item was already initialized without modification.
request_idstringrequired
A unique identifier for the request, which can be used for troubleshooting. This identifier, like all Plaid identifiers, is case sensitive.
defaultReturned when the request cannot be processed; inspect `error_code`, `error_type`, and `error_message` to identify the problem.
error_typestringrequired
A broad categorization of the error. Safe for programmatic use.
Allowed:INVALID_REQUESTINVALID_RESULTINVALID_INPUTINSTITUTION_ERRORRATE_LIMIT_EXCEEDEDAPI_ERRORITEM_ERRORASSET_REPORT_ERRORBASE_REPORT_ERRORRECAPTCHA_ERROROAUTH_ERRORPAYMENT_ERROR
error_codestringrequired
The particular error code. Safe for programmatic use.
error_code_reasonstringoptional
The specific reason for the error code. Currently, reasons are only supported for OAuth-based item errors; `null` will be returned otherwise. Safe for programmatic use. Possible values: `OAUTH_INVALID_TOKEN`: The user's OAuth connection to this institution has been invalidated. `OAUTH_CONSENT_EXPIRED`: The user's access consent for this OAuth connection to this institution has expired. `OAUTH_USER_REVOKED`: The user's OAuth connection to this institution is invalid because the user revoked their connection.
error_messagestringrequired
A developer-friendly representation of the error code. This may change over time and is not safe for programmatic use.
display_messagestringrequired
A user-friendly representation of the error code. `null` if the error is not related to user action. This may change over time and is not safe for programmatic use.
request_idstringoptional
A unique ID identifying the request, to be used for troubleshooting purposes. This field will be omitted in errors provided by webhooks.
causesarrayoptional
In this product, a request can pertain to more than one Item. If an error is returned for such a request, `causes` will return an array of errors containing a breakdown of these errors on the individual Item level, if any can be identified. `causes` will be provided for the `error_type` `ASSET_REPORT_ERROR` or `CHECK_REPORT_ERROR`. `causes` will also not be populated inside an error nested within a `warning` object.
statusintegeroptional
The HTTP status code associated with the error. This will only be returned in the response body when the error information is provided via a webhook.
documentation_urlstringoptional
The URL of a Plaid documentation page with more information about the error
suggested_actionstringoptional
Suggested steps for resolving the error
required_account_subtypesarray<string>optional
A list of the account subtypes that were requested via the `account_filters` parameter in `/link/token/create`. Currently only populated for `NO_ACCOUNTS` errors from Items with `investments_auth` as an enabled product.
provided_account_subtypesarray<string>optional
A list of the account subtypes that were extracted but did not match the requested subtypes via the `account_filters` parameter in `/link/token/create`. Currently only populated for `NO_ACCOUNTS` errors from Items with `investments_auth` as an enabled product.

Error handling

access_token is required and must identify the Item to prepare. Use this operation only for an Item that is not already initialized with Signal Transaction Scores; it has no effect for Balance-only integrations or an already initialized Item.