supabase__server/docs/api-reference.md

API Reference

Complete reference for every export, organized by entry point.

---

@supabase/server

withSupabase

function withSupabase<Database = unknown>(
  config: WithSupabaseConfig,
  handler: (req: Request, ctx: SupabaseContext<Database>) => Promise<Response>,
): (req: Request) => Promise<Response>

Wraps a fetch handler with auth, CORS, and client creation. Returns a (req: Request) => Promise<Response> function suitable for export default { fetch }.

• Handles OPTIONS preflight when CORS is enabled
• Verifies credentials per config.allow
• Returns JSON error response on auth failure
• Adds CORS headers to all responses

createSupabaseContext

function createSupabaseContext<Database = unknown>(
  request: Request,
  options?: WithSupabaseConfig,
): Promise<
  | { data: SupabaseContext<Database>; error: null }
  | { data: null; error: AuthError }
>

Creates a SupabaseContext from a request. Returns a result tuple. The cors option is ignored.

Defaults to allow: 'user' when options is omitted.

---

@supabase/server/core

verifyAuth

function verifyAuth(
  request: Request,
  options: { allow: AllowWithKey | AllowWithKey[]; env?: Partial<SupabaseEnv> },
): Promise<{ data: AuthResult; error: null } | { data: null; error: AuthError }>

Extracts credentials from a request and verifies them. Convenience wrapper over extractCredentials + verifyCredentials.

verifyCredentials

function verifyCredentials(
  credentials: Credentials,
  options: { allow: AllowWithKey | AllowWithKey[]; env?: Partial<SupabaseEnv> },
): Promise<{ data: AuthResult; error: null } | { data: null; error: AuthError }>

Verifies pre-extracted credentials against allowed auth modes. Tries each mode in order — first match wins.

extractCredentials

function extractCredentials(request: Request): Credentials

Reads Authorization: Bearer <token> and apikey headers from a request. Pure extraction, no validation. Synchronous.

resolveEnv

function resolveEnv(
  overrides?: Partial<SupabaseEnv>,
): { data: SupabaseEnv; error: null } | { data: null; error: EnvError }

Resolves Supabase environment configuration from runtime variables. SUPABASE_URL is the only hard requirement.

createContextClient

function createContextClient<Database = unknown>(
  options?: CreateContextClientOptions,
): SupabaseClient<Database>

Creates a user-scoped Supabase client. RLS applies. Throws EnvError if URL or publishable key is missing.

Configured with:

• Publishable key (named or default) as apikey header
• User's JWT as Authorization: Bearer header (when auth.token is provided)
• persistSession: false, autoRefreshToken: false, detectSessionInUrl: false

createAdminClient

function createAdminClient<Database = unknown>(
  options?: CreateAdminClientOptions,
): SupabaseClient<Database>

Creates an admin Supabase client that bypasses RLS. Throws EnvError if URL or secret key is missing.

---

@supabase/server/adapters/hono

withSupabase (Hono)

function withSupabase(
  config?: Omit<WithSupabaseConfig, 'cors'>,
): MiddlewareHandler

Hono middleware. Sets c.var.supabaseContext on the Hono context. Throws HTTPException on auth failure with cause: AuthError.

Skips if c.var.supabaseContext is already set (enables route-level overrides).

Defaults to allow: 'user' when config is omitted.

---

Types

Allow

type Allow = 'always' | 'public' | 'secret' | 'user'

AllowWithKey

type AllowWithKey = Allow | `public:${string}` | `secret:${string}`

Extended auth mode with named key support. Examples: 'public:web', 'secret:*', 'secret:internal'.

SupabaseContext<Database>

interface SupabaseContext<Database = unknown> {
  supabase: SupabaseClient<Database>
  supabaseAdmin: SupabaseClient<Database>
  userClaims: UserClaims | null
  claims: JWTClaims | null
  authType: Allow
}

WithSupabaseConfig

interface WithSupabaseConfig {
  allow?: AllowWithKey | AllowWithKey[] // default: 'user'
  env?: Partial<SupabaseEnv>
  cors?: boolean | Record<string, string> // default: true
  supabaseOptions?: SupabaseClientOptions<string>
}

SupabaseEnv

interface SupabaseEnv {
  url: string
  publishableKeys: Record<string, string>
  secretKeys: Record<string, string>
  jwks: JsonWebKeySet | null
}

Credentials

interface Credentials {
  token: string | null
  apikey: string | null
}

AuthResult

interface AuthResult {
  authType: Allow
  token: string | null
  userClaims: UserClaims | null
  claims: JWTClaims | null
  keyName?: string | null
}

JWTClaims

interface JWTClaims {
  sub: string
  iss?: string
  aud?: string | string[]
  exp?: number
  iat?: number
  role?: string
  email?: string
  app_metadata?: Record<string, unknown>
  user_metadata?: Record<string, unknown>
  [key: string]: unknown
}

UserClaims

interface UserClaims {
  id: string
  role?: string
  email?: string
  appMetadata?: Record<string, unknown>
  userMetadata?: Record<string, unknown>
}

ClientAuth

interface ClientAuth {
  token?: string | null
  keyName?: string | null
}

CreateContextClientOptions

interface CreateContextClientOptions {
  auth?: ClientAuth
  env?: Partial<SupabaseEnv>
  supabaseOptions?: SupabaseClientOptions<string>
}

CreateAdminClientOptions

interface CreateAdminClientOptions {
  auth?: Pick<ClientAuth, 'keyName'>
  env?: Partial<SupabaseEnv>
  supabaseOptions?: SupabaseClientOptions<string>
}

JsonWebKeySet

interface JsonWebKeySet {
  keys: JsonWebKey[]
}

---

Error Classes

EnvError

class EnvError extends Error {
  readonly status: 500
  readonly code: string
}

AuthError

class AuthError extends Error {
  readonly status: number // 401 or 500
  readonly code: string
}

---

Error Code Constants

Constant	Value	Class	Meaning
EnvGenericError	'ENV_ERROR'	EnvError	Generic environment error
MissingSupabaseURLError	'MISSING_SUPABASE_URL'	EnvError	SUPABASE_URL not set
MissingPublishableKeyError	'MISSING_PUBLISHABLE_KEY'	EnvError	Named publishable key not found
MissingDefaultPublishableKeyError	'MISSING_DEFAULT_PUBLISHABLE_KEY'	EnvError	No default publishable key
MissingSecretKeyError	'MISSING_SECRET_KEY'	EnvError	Named secret key not found
MissingDefaultSecretKeyError	'MISSING_DEFAULT_SECRET_KEY'	EnvError	No default secret key
AuthGenericError	'AUTH_ERROR'	AuthError	Generic auth error
InvalidCredentialsError	'INVALID_CREDENTIALS'	AuthError	No credential matched, or JWT failed verification
CreateSupabaseClientError	'CREATE_SUPABASE_CLIENT_ERROR'	AuthError	Client creation failed after auth

---

Errors Factory Map

const Errors: {
  [MissingSupabaseURLError]: () => EnvError
  [MissingPublishableKeyError]: (name: string) => EnvError
  [MissingDefaultPublishableKeyError]: () => EnvError
  [MissingSecretKeyError]: (name: string) => EnvError
  [MissingDefaultSecretKeyError]: () => EnvError
  [InvalidCredentialsError]: () => AuthError
  [CreateSupabaseClientError]: () => AuthError
}

Keyed by error code constant. Each entry returns a pre-configured error instance.