## Summary
When the backend serves both `api.stack-auth.com` and `api.hexclave.com`
from the same deployment, signed JWT `iss` claims and OAuth
`redirect_uri` values need to match the host the customer's SDK actually
talks to — otherwise customers with hardcoded issuer checks or
registered OAuth callback URLs break when their SDK upgrades. This PR
makes both follow the request host.
Closes the "Interpretation B" plan from our earlier discussion.
## Changes
### Backend — request-host-derived `iss` and `redirect_uri`
- **New helper**
[`apps/backend/src/lib/request-api-url.ts`](apps/backend/src/lib/request-api-url.ts)
exports `getApiUrlForRequest(req)` and `getApiUrlForHost(host)`. A
consolidated `CLOUD_HOST_PAIRS` constant is the single source of truth
for the stack-auth ↔ hexclave host pairs (prod, dev, staging). Both the
allowlist here and the validator alias map in `tokens.tsx` derive from
it, so they can never drift again.
- **JWT issuer per request**
([`apps/backend/src/lib/tokens.tsx`](apps/backend/src/lib/tokens.tsx)) —
`getIssuer` now takes `apiUrl`.
`generateAccessTokenFromRefreshTokenIfValid` and `createAuthTokens`
accept an `apiUrl` parameter that flows into the `iss` claim.
`getAllowedIssuers` stays env-driven with the bidirectional alias map,
so tokens cross-validate across hosts.
- **OAuth `redirect_uri` per request** — all 12 providers +
`MockProvider` now take `apiUrl` and use it to build `redirect_uri =
apiUrl + "/api/v1/auth/oauth/callback/<provider>"`. `getProvider()`
accepts an `{ apiUrl }` option and forwards it.
- **OAuth2Server factory** — the module-level `oauthServer` singleton
became a per-request `createOAuthServer({ apiUrl })` factory so
`OAuthModel.generateAccessToken` mints tokens with the right `iss`. Used
in the callback route, the token route, and the cross-domain-authorize
helper.
- **Token-minting call sites updated** — all 10 `createAuthTokens`
invocations (password sign-up/sign-in, sessions create,
sessions/current/refresh, anonymous sign-up, apple-native callback,
MFA/OTP/passkey sign-in, OAuth model token exchange), plus the
CLI-complete `generateAccessTokenFromRefreshTokenIfValid` direct call,
now pass `getApiUrlForRequest(fullReq)`.
- **`createVerificationCodeHandler` refactored** to pass `apiUrl` as a
6th positional arg to the user's handler, so MFA/OTP/passkey sign-in
flows get the same per-request `iss` as the rest. The other 8 callers
(password-reset, contact-channels-verify, etc.) don't need changes —
they accept fewer args and TS function-arity compatibility makes that
fine.
### SDK — freeze `@stackframe/*` defaults at stack-auth.com
-
[`packages/template/src/lib/stack-app/apps/implementations/common.ts`](packages/template/src/lib/stack-app/apps/implementations/common.ts)
reverts `defaultBaseUrl` and `defaultAnalyticsBaseUrl` to
`https://api.stack-auth.com` / `https://r.stack-auth.com`. A customer
who upgrades their `@stackframe/*` package to the latest version without
explicitly migrating to `@hexclave/*` keeps hitting `api.stack-auth.com`
and never sees their JWT `iss` or OAuth `redirect_uri` change.
- The `@hexclave/*` mirror packages are unaffected because they were
published from source when `defaultBaseUrl =
"https://api.hexclave.com"`; v1.0.0 already targets the hexclave host on
npm. Extending `scripts/rewrite-packages-to-hexclave.ts` to substitute
these literals during future republishes is a separate follow-up.
### Docs — migration guide rewrite
- [`docs-mintlify/migration.mdx`](docs-mintlify/migration.mdx) rewritten
concisely. Spells out the two host-visible changes that require
pre-deploy action when migrating to `@hexclave/*`: updating manual JWT
verifier code (with the array-of-issuers pattern) and updating OAuth
callback URLs at each provider (with the GitHub-OAuth-Apps single-URL
caveat explicitly called out).
## What was deliberately left out
- **Rewriter pipeline extension** for `@hexclave/*` republishes —
separate follow-up.
- **Cross-SDK defaults** (Swift, stack-cli, init-stack still default to
`api.hexclave.com`) — out of scope per discussion.
- **Dashboard launch-checklist host-awareness** — out of scope per
discussion (callback URLs stay hexclave-branded in the dashboard UI).
## Verification
- `pnpm typecheck` — 29/29 packages pass.
- `pnpm lint` — 29/29 packages pass.
- Five parallel review agents (JWT, OAuth, helper, migration guide, SDK
defaults) + an external review of the commit caught four real issues —
all resolved in the same commit before push:
- Missing `api.staging.*` entries in `issuerHostAliases` (would have
broken cross-host token validation on staging).
- Stale comment in `apps/backend/src/stack.tsx`.
- Misleading "backward-compat" comment in `getHardcodedFallbackUrls`.
- MFA/OTP/passkey using env-var fallback for `iss` instead of the
request host.
<!-- This is an auto-generated description by cubic. -->
---
## Summary by cubic
Makes JWT issuers and OAuth redirect_uri values follow the incoming
request’s host so tokens and redirects always match `api.stack-auth.com`
or `api.hexclave.com`. Also freezes `@stackframe/*` SDK defaults to
Stack Auth and tightens the migration guide to focus on OAuth callbacks.
- **New Features**
- Added `request-api-url` helper with an allowlist of cloud hosts;
unknown hosts fall back to the deployment’s API URL.
- JWT `iss` now uses the per-request API URL; validation accepts both
brands via aliases derived from one `CLOUD_HOST_PAIRS` source.
- All OAuth providers build `redirect_uri` from the request host;
`getProvider()` now takes `{ apiUrl }`.
- Replaced the OAuth2Server singleton with per-request
`createOAuthServer({ apiUrl })` so token exchange mints with the right
issuer.
- Updated token-minting and OAuth routes to pass the API URL;
verification-code flows receive it; connected-accounts refresh paths
safely pin the deployment default.
- SDK: `@stackframe/*` defaults point to `https://api.stack-auth.com`;
`@hexclave/*` mirrors remain hexclave-branded.
- Shared: updated fallback API host lists to include both stack-auth and
hexclave hosts.
- **Migration**
- Update each provider’s OAuth callback URL to
`https://api.hexclave.com/api/v1/auth/oauth/callback/<provider>` when
migrating to `@hexclave/*`.
- If you verify JWTs manually, update the expected issuer to the
hexclave host (including anonymous/restricted variants).
<sup>Written for commit e42dfaf05b.
Summary will update on new commits. <a
href="https://cubic.dev/pr/hexclave/stack-auth/pull/1498?utm_source=github">Review
in cubic</a></sup>
<!-- End of auto-generated description by cubic. -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Per-request API host awareness so tokens and OAuth flows reflect the
incoming request’s canonical API URL.
* **Updates**
* OAuth providers and servers now derive callback/redirect URLs from
request context rather than a static URL.
* Token issuance/validation now embeds and accepts host-specific issuer
URLs and paired host aliases for rebrand compatibility.
* **Documentation**
* Migration guide updated for branding, JWT issuer expectations, and
OAuth callback guidance.
<!-- review_stack_entry_start -->
[](https://app.coderabbit.ai/change-stack/hexclave/stack-auth/pull/1498?utm_source=github_walkthrough&utm_medium=github&utm_campaign=change_stack)
<!-- review_stack_entry_end -->
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Hexclave handles everything around your users: authentication, teams,
payments, emails, analytics, and much more. Start in minutes on the hosted
cloud. Your data is always yours to export and self-host.
Setting up Hexclave is one prompt. Paste this into your coding agent of choice:
Read skill.hexclave.com and help me setup hexclave in this project
What's included
Hexclave ships as a catalog of apps you switch on as your product needs them.
Each one is built on the same user model, and new apps land regularly.
Authentication
Authentication that just works with passkeys, OAuth, and CLI auth. Drop in one component and ship the whole flow; auth methods toggle from the dashboard with no code changes needed.
Teams
Build for teams, not just users, with workspaces, email invites, and roles that actually gate the work. The workspace switcher remembers selection, invites auto sign up new users, and permissions hold up under audit.
RBAC
Permissions, sorted: roles that nest and one permission check that works the same on server or client. Define them in the dashboard, check them anywhere in your code.
API Keys
API keys without the footguns: leaked keys get auto-revoked, work for users and teams, and show the full secret only once. We never keep the plaintext after creation.
Payments
Payments without the plumbing for subscriptions, one-time charges, and usage metering with credits. Bill a person or a whole team with one model, no separate codepath.
Emails
Email that delivers and tells you so, handling transactional and marketing sends from one API. Edit templates with an AI editor, theme once, and track every open and click.
Analytics
Know your users with no data stack required, with live active user counts and session replays out of the box. Ask in plain English to build dashboards or write SQL to save queries, all with one flag enabled.
Webhooks
React to every user event in real time with signed, tamper-proof webhooks. Retries and backoff are handled for you; verify in five lines and manage endpoints from the dashboard.
Data Vault
A safe for the secrets your users hand you, locked with your secret so we never see the plaintext. Store and retrieve tokens in two lines each, server-only by design.
Launch Checklist
Run through the must-do checks before flipping to production: domain setup, callbacks locked, secrets rotated. The progress tracker keeps your team aligned so nothing critical slips through on launch day.
Contributing
Hexclave is open source, and contributions are welcome. Read
CONTRIBUTING.md to get started, and say hello in
Discord before picking up anything large.
Found a security issue? Email security@hexclave.com.
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