> ## Documentation Index
> Fetch the complete documentation index at: https://developer.hellgate.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Guardian Updates

> New releases and improvements of Guardian.

<Update label="May 4, 2026" tags={["New Release", "Improvement"]}>
  ## Guardian Admin UI

  Guardian now ships with a built-in Admin UI for day-to-day token operations.
  Browse and manage tokens, handle API keys with proper timezone-aware
  expiration, and walk new operators through token creation — all backed by a
  Playwright end-to-end test suite so it stays solid release after release.

  ## Metadata Inquiry Endpoint

  A new `POST /metadata/inquiry` endpoint lets you look up issuer metadata
  on-demand. The endpoint is feature-flagged per tier, propagates the
  `x-request-id` end-to-end as a correlation ID, and emits a billing event
  tagged with the requester's contract ID — so reporting and chargeback
  reconciliation work out of the box.

  ## Improvements and bugfixes

  * American Express now renders with its proper scheme name in admin views.
  * Metadata inquiry events include `network_token_id` for richer
    reconciliation data.
  * Hellgate SDK `<script>` tag no longer carries SRI/`crossorigin`
    attributes, simplifying embedding.
</Update>

<Update label="March 30, 2026" tags={["New Release", "Improvement"]}>
  ## Token Import

  Migrating into Guardian from a legacy vault just got dramatically easier.
  A new admin **Tokens Import** workflow lets you bulk-load tokens via SFTP,
  with vault key handling that accepts both PEM and OpenSSH key formats.
  Move large token estates in hours, not weeks.

  ## Improvements and bugfixes

  * Vault error handling is now much more informative — fewer mystery
    failures, more actionable messages.
  * Clearer error response when creating a PCI token with invalid input.
</Update>

<Update label="March 11, 2026" tags={["New Release", "Improvement"]}>
  ## Generic Token Types API

  Building on January's Generic Tokens launch, you can now manage token
  *type* definitions through a new admin API: `GET /api/admin/types`,
  `GET /api/admin/types/{id}`, and `DELETE /api/admin/types/{id}`. Type
  schemas are validated at token-creation time, and you can filter your
  generic tokens by `type_id` — making it straightforward to organize
  SEPA credentials separately from API keys, for example.

  ## Improvements and bugfixes

  * PCI token limits are now checked *before* network tokenization, avoiding
    half-completed states when a tenant hits its cap.
  * Network token status is validated before cryptogram creation, surfacing
    a clean error instead of an opaque failure deep in the cryptogram path.
  * Token requestor returns proper user-facing error messages.
  * `404` response shape is now consistent across the API.
  * Completed sessions return a sensible response even when the network
    token attempt failed.
  * Added PAYONE test cards to the test fixtures.
</Update>

<Update label="January 29, 2026" tags={["New Release", "Maintenance"]}>
  ## Introduction of Generic Tokens

  Effecitve with this release, you can now store arbitrary payloads (for example SEPA credentials, API keys, or other sensitive data).
  Find more information in our [documentation](/products/guardian/tokens/generic-tokens).

  ## Improved TMS Support

  The integration of VISA Token Management Service (TMS) was update for better feature coverage and more flexibility.
</Update>

<Update label="December 19, 2025" tags={["New Release", "Maintenance"]}>
  ## Added support for VISA Token Management Service (TMS)

  Effecitve with this release another backend for network token management was added. This brings more options and better flexibility.

  ## Bugfixes

  * Allow deletion of network tokens in case of active cryptograms.
  * Better handling of image dimensions of card-art data.
  * Better error messages for missing data in scheme cryptograms.
</Update>

<Update label="November 8, 2025" tags={["Improvement", "Maintenance"]}>
  ## Small improvements

  * Updates to the latest PCI DSS requirements.
  * Support more card art formats from issuers (including PDFs 😀).

  ## Bugfix

  * Fixed a small issue where notifications were retried on successful delivery.
</Update>

<Update label="August 29, 2025" tags={["New Release"]}>
  ## Wide support of metadata attributes on API

  We rolled out a wide support of metadata attributes on API. This allows you to store more information along side your token operations.

  ## Support of deterministic TPANs

  We added support for deterministic TPANs on Guardian's Network Token Sandbox. This allows you to test your integration with deterministic TPANs.
</Update>