Wise

The public C ABI exposes Wise backend opening, token-store ownership, and token setup surfaces. Shared account, transaction, and payment operations remain capability-probed through gln_check_backend_operation_support.

Provider/API reference: Wise Platform API documentation.

Exposed Surface

The Wise personal token enters through gln_wise_set_personal_token as a gln_secret_t. Status and delete operations report only redacted state: public JSON and result fields never include the token string.

Token setup writes one active persistence sink. When profile_name_or_null is configured on the opened backend, setup writes host profile storage. Otherwise, setup writes the supplied Wise token-store handle.

The public header does not expose Wise-specific account, transaction, or payment operation entrypoints. Do not model Wise as supporting gln_retrieve_accounts, gln_retrieve_balances, gln_retrieve_transactions, or transfer submission unless gln_check_backend_operation_support reports support for the opened backend.

Open a Backend

gln_wise_config_t config = {0};
gln_default_wise_config(&config);
config.endpoint = "https://api.wise.example";
config.profile_id_or_null = "profile-123";
config.profile_name_or_null = "company-profile";

gln_backend_t* backend = NULL;
gln_error_t error = {0};
gln_default_error(&error);
gln_status_t status = gln_open_wise_backend(
    &config,
    state_store,
    token_store,
    &backend,
    &error);

The token store and state store must outlive the backend handle using them.

Token Store

gln_wise_token_store_t* token_store = NULL;
gln_error_t error = {0};
gln_default_error(&error);
gln_status_t status = gln_create_file_wise_token_store(
    "wise-token-store",
    NULL,
    &token_store,
    &error);

Release it with gln_destroy_wise_token_store after closing every backend that uses it.

Token Setup

gln_secret_t* personal_token = NULL;
make_secret_from_prompt(&personal_token);

gln_error_t error = {0};

gln_default_error(&error);

gln_status_t status = gln_wise_set_personal_token(
    backend,
    personal_token,
    &error);

Use gln_wise_token_status to retrieve redacted token state as caller-owned JSON, and release that string with gln_release_string. Use gln_wise_delete_token to remove persisted Wise token state associated with an opened backend.

Runtime Checks

int can_list_transactions =
    gln_check_backend_operation_support(backend, GLN_BACKEND_OPERATION_LIST_TRANSACTIONS);
int can_submit_transfer =
    gln_check_backend_operation_support(backend, GLN_BACKEND_OPERATION_SUBMIT_TRANSFER);

Probe each operation independently before enabling it for an arbitrary backend handle.