Create a Stripe Checkout session for an active subscription plan.

POST

/v1/billing/subscribe

curl --request POST \
  --url https://data.predictefy.com/v1/billing/subscribe \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{ "planId": "example" }'

• Canonical reads origin. Execution operations declare their isolated origin per operation.
• Legacy Railway reads origin; existing integrations remain supported.

Key-authed and WEIGHT 0 (starting a subscription never debits credits). The returned URL is Stripe-hosted; monthly credit grants land later via the webhook’s invoice.paid handler, from the plan’s monthly_credit_grant. ONE open subscription per account — 409 SUBSCRIPTION_EXISTS while a non-terminal subscription or a recent (30 min) pending subscribe checkout exists. Only active rows with self_serve=true are purchasable; Enterprise is contract-only. 503 BILLING_UNAVAILABLE until the STRIPE_* env is configured.

Authorizations

• bearerAuth

Request Body^required

Media typeapplication/json

object

planId

required

An ACTIVE, PRICED, self-serve plans id.

string

Example^generated

{
  "planId": "example"
}

Responses

200

The hosted Stripe Checkout URL.

Media typeapplication/json

object

success

required

boolean

data

object

url

required

string | null

Example^generated

{
  "success": true,
  "data": {
    "url": "example"
  }
}

400

Enveloped error.

Media typeapplication/json

object

success

required

boolean

error

required

object

message

required

string

code

required

string

Allowed values: VALIDATION_ERROR NOT_SUPPORTED ACCOUNTS_UNSUPPORTED VENUE_NOT_AVAILABLE EXCHANGE_NOT_AVAILABLE MARKET_NOT_FOUND EVENT_NOT_FOUND CLUSTER_NOT_FOUND OUTCOME_NOT_FOUND SNAPSHOT_NOT_FOUND CATALOG_UNAVAILABLE CATALOG_QUERY_TOO_BROAD HISTORY_UNAVAILABLE ROUTE_NOT_FOUND INTERNAL AUTHENTICATION_ERROR PERMISSION_DENIED RATE_LIMIT_EXCEEDED NETWORK_ERROR NOT_FOUND BAD_REQUEST BRIDGE_UNSUPPORTED BRIDGE_UPSTREAM BRIDGE_PROVIDER_UNAVAILABLE BRIDGE_TRANSACTION_NOT_FOUND BRIDGE_SESSION_NOT_FOUND TRANSFER_PLAN_UNSUPPORTED UNAUTHORIZED SCOPE_MISSING PLAN_REQUIRED INSUFFICIENT_CREDITS RATE_LIMITED GEO_BLOCKED VENUE_REGION_BLOCKED IDEMPOTENCY_KEY_REQUIRED IDEMPOTENCY_CONFLICT ARTIFACT_VERSION_CONFLICT SPEND_CAP_EXCEEDED ARTIFACT_BOUNDS_VIOLATION ARTIFACT_INTEGRITY_MISMATCH VENUE_NOT_SUPPORTED EXECUTION_NOT_FOUND NOT_IMPLEMENTED VENUE_CREDENTIAL_REJECTED VENUE_CREDENTIAL_BREAKER_OPEN GEMINI_TIME_NONCE_REQUIRED GEMINI_HEARTBEAT_KEY_UNSUPPORTED VENUE_RELAY_FAILED EXEC_UNAVAILABLE RAIN_INVALID_OPTION RAIN_INVALID_SIDE RAIN_INVALID_PRICE RAIN_INVALID_AMOUNT RAIN_SLIPPAGE_REQUIRED RAIN_INVALID_DEADLINE RAIN_PHASE_NOT_OPEN RAIN_ORDER_LIMIT_REACHED RAIN_POOL_SAFETY_CHECK_FAILED PLATFORM_UNAVAILABLE PACK_NOT_FOUND BILLING_UNAVAILABLE BILLING_CUSTOMER_REQUIRED INVALID_SIGNATURE FEED_NOT_FOUND FEEDS_UNAVAILABLE FEED_UPSTREAM MATCHES_UNAVAILABLE

retryable

required

boolean

requestId

required

Always present on errors; quote this id when reporting a failed request.

string

exchange

Present only when a venue error is attributed to a specific exchange.

string

Example

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR"
  }
}

401

Enveloped error.

Media typeapplication/json

object

success

required

boolean

error

required

object

message

required

string

code

required

string

Allowed values: VALIDATION_ERROR NOT_SUPPORTED ACCOUNTS_UNSUPPORTED VENUE_NOT_AVAILABLE EXCHANGE_NOT_AVAILABLE MARKET_NOT_FOUND EVENT_NOT_FOUND CLUSTER_NOT_FOUND OUTCOME_NOT_FOUND SNAPSHOT_NOT_FOUND CATALOG_UNAVAILABLE CATALOG_QUERY_TOO_BROAD HISTORY_UNAVAILABLE ROUTE_NOT_FOUND INTERNAL AUTHENTICATION_ERROR PERMISSION_DENIED RATE_LIMIT_EXCEEDED NETWORK_ERROR NOT_FOUND BAD_REQUEST BRIDGE_UNSUPPORTED BRIDGE_UPSTREAM BRIDGE_PROVIDER_UNAVAILABLE BRIDGE_TRANSACTION_NOT_FOUND BRIDGE_SESSION_NOT_FOUND TRANSFER_PLAN_UNSUPPORTED UNAUTHORIZED SCOPE_MISSING PLAN_REQUIRED INSUFFICIENT_CREDITS RATE_LIMITED GEO_BLOCKED VENUE_REGION_BLOCKED IDEMPOTENCY_KEY_REQUIRED IDEMPOTENCY_CONFLICT ARTIFACT_VERSION_CONFLICT SPEND_CAP_EXCEEDED ARTIFACT_BOUNDS_VIOLATION ARTIFACT_INTEGRITY_MISMATCH VENUE_NOT_SUPPORTED EXECUTION_NOT_FOUND NOT_IMPLEMENTED VENUE_CREDENTIAL_REJECTED VENUE_CREDENTIAL_BREAKER_OPEN GEMINI_TIME_NONCE_REQUIRED GEMINI_HEARTBEAT_KEY_UNSUPPORTED VENUE_RELAY_FAILED EXEC_UNAVAILABLE RAIN_INVALID_OPTION RAIN_INVALID_SIDE RAIN_INVALID_PRICE RAIN_INVALID_AMOUNT RAIN_SLIPPAGE_REQUIRED RAIN_INVALID_DEADLINE RAIN_PHASE_NOT_OPEN RAIN_ORDER_LIMIT_REACHED RAIN_POOL_SAFETY_CHECK_FAILED PLATFORM_UNAVAILABLE PACK_NOT_FOUND BILLING_UNAVAILABLE BILLING_CUSTOMER_REQUIRED INVALID_SIGNATURE FEED_NOT_FOUND FEEDS_UNAVAILABLE FEED_UPSTREAM MATCHES_UNAVAILABLE

retryable

required

boolean

requestId

required

Always present on errors; quote this id when reporting a failed request.

string

exchange

Present only when a venue error is attributed to a specific exchange.

string

Example

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR"
  }
}

403

Enveloped error.

Media typeapplication/json

object

success

required

boolean

error

required

object

message

required

string

code

required

string

Allowed values: VALIDATION_ERROR NOT_SUPPORTED ACCOUNTS_UNSUPPORTED VENUE_NOT_AVAILABLE EXCHANGE_NOT_AVAILABLE MARKET_NOT_FOUND EVENT_NOT_FOUND CLUSTER_NOT_FOUND OUTCOME_NOT_FOUND SNAPSHOT_NOT_FOUND CATALOG_UNAVAILABLE CATALOG_QUERY_TOO_BROAD HISTORY_UNAVAILABLE ROUTE_NOT_FOUND INTERNAL AUTHENTICATION_ERROR PERMISSION_DENIED RATE_LIMIT_EXCEEDED NETWORK_ERROR NOT_FOUND BAD_REQUEST BRIDGE_UNSUPPORTED BRIDGE_UPSTREAM BRIDGE_PROVIDER_UNAVAILABLE BRIDGE_TRANSACTION_NOT_FOUND BRIDGE_SESSION_NOT_FOUND TRANSFER_PLAN_UNSUPPORTED UNAUTHORIZED SCOPE_MISSING PLAN_REQUIRED INSUFFICIENT_CREDITS RATE_LIMITED GEO_BLOCKED VENUE_REGION_BLOCKED IDEMPOTENCY_KEY_REQUIRED IDEMPOTENCY_CONFLICT ARTIFACT_VERSION_CONFLICT SPEND_CAP_EXCEEDED ARTIFACT_BOUNDS_VIOLATION ARTIFACT_INTEGRITY_MISMATCH VENUE_NOT_SUPPORTED EXECUTION_NOT_FOUND NOT_IMPLEMENTED VENUE_CREDENTIAL_REJECTED VENUE_CREDENTIAL_BREAKER_OPEN GEMINI_TIME_NONCE_REQUIRED GEMINI_HEARTBEAT_KEY_UNSUPPORTED VENUE_RELAY_FAILED EXEC_UNAVAILABLE RAIN_INVALID_OPTION RAIN_INVALID_SIDE RAIN_INVALID_PRICE RAIN_INVALID_AMOUNT RAIN_SLIPPAGE_REQUIRED RAIN_INVALID_DEADLINE RAIN_PHASE_NOT_OPEN RAIN_ORDER_LIMIT_REACHED RAIN_POOL_SAFETY_CHECK_FAILED PLATFORM_UNAVAILABLE PACK_NOT_FOUND BILLING_UNAVAILABLE BILLING_CUSTOMER_REQUIRED INVALID_SIGNATURE FEED_NOT_FOUND FEEDS_UNAVAILABLE FEED_UPSTREAM MATCHES_UNAVAILABLE

retryable

required

boolean

requestId

required

Always present on errors; quote this id when reporting a failed request.

string

exchange

Present only when a venue error is attributed to a specific exchange.

string

Example

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR"
  }
}

404

Enveloped error.

Media typeapplication/json

object

success

required

boolean

error

required

object

message

required

string

code

required

string

Allowed values: VALIDATION_ERROR NOT_SUPPORTED ACCOUNTS_UNSUPPORTED VENUE_NOT_AVAILABLE EXCHANGE_NOT_AVAILABLE MARKET_NOT_FOUND EVENT_NOT_FOUND CLUSTER_NOT_FOUND OUTCOME_NOT_FOUND SNAPSHOT_NOT_FOUND CATALOG_UNAVAILABLE CATALOG_QUERY_TOO_BROAD HISTORY_UNAVAILABLE ROUTE_NOT_FOUND INTERNAL AUTHENTICATION_ERROR PERMISSION_DENIED RATE_LIMIT_EXCEEDED NETWORK_ERROR NOT_FOUND BAD_REQUEST BRIDGE_UNSUPPORTED BRIDGE_UPSTREAM BRIDGE_PROVIDER_UNAVAILABLE BRIDGE_TRANSACTION_NOT_FOUND BRIDGE_SESSION_NOT_FOUND TRANSFER_PLAN_UNSUPPORTED UNAUTHORIZED SCOPE_MISSING PLAN_REQUIRED INSUFFICIENT_CREDITS RATE_LIMITED GEO_BLOCKED VENUE_REGION_BLOCKED IDEMPOTENCY_KEY_REQUIRED IDEMPOTENCY_CONFLICT ARTIFACT_VERSION_CONFLICT SPEND_CAP_EXCEEDED ARTIFACT_BOUNDS_VIOLATION ARTIFACT_INTEGRITY_MISMATCH VENUE_NOT_SUPPORTED EXECUTION_NOT_FOUND NOT_IMPLEMENTED VENUE_CREDENTIAL_REJECTED VENUE_CREDENTIAL_BREAKER_OPEN GEMINI_TIME_NONCE_REQUIRED GEMINI_HEARTBEAT_KEY_UNSUPPORTED VENUE_RELAY_FAILED EXEC_UNAVAILABLE RAIN_INVALID_OPTION RAIN_INVALID_SIDE RAIN_INVALID_PRICE RAIN_INVALID_AMOUNT RAIN_SLIPPAGE_REQUIRED RAIN_INVALID_DEADLINE RAIN_PHASE_NOT_OPEN RAIN_ORDER_LIMIT_REACHED RAIN_POOL_SAFETY_CHECK_FAILED PLATFORM_UNAVAILABLE PACK_NOT_FOUND BILLING_UNAVAILABLE BILLING_CUSTOMER_REQUIRED INVALID_SIGNATURE FEED_NOT_FOUND FEEDS_UNAVAILABLE FEED_UPSTREAM MATCHES_UNAVAILABLE

retryable

required

boolean

requestId

required

Always present on errors; quote this id when reporting a failed request.

string

exchange

Present only when a venue error is attributed to a specific exchange.

string

Example

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR"
  }
}

409

Enveloped error.

Media typeapplication/json

object

success

required

boolean

error

required

object

message

required

string

code

required

string

Allowed values: VALIDATION_ERROR NOT_SUPPORTED ACCOUNTS_UNSUPPORTED VENUE_NOT_AVAILABLE EXCHANGE_NOT_AVAILABLE MARKET_NOT_FOUND EVENT_NOT_FOUND CLUSTER_NOT_FOUND OUTCOME_NOT_FOUND SNAPSHOT_NOT_FOUND CATALOG_UNAVAILABLE CATALOG_QUERY_TOO_BROAD HISTORY_UNAVAILABLE ROUTE_NOT_FOUND INTERNAL AUTHENTICATION_ERROR PERMISSION_DENIED RATE_LIMIT_EXCEEDED NETWORK_ERROR NOT_FOUND BAD_REQUEST BRIDGE_UNSUPPORTED BRIDGE_UPSTREAM BRIDGE_PROVIDER_UNAVAILABLE BRIDGE_TRANSACTION_NOT_FOUND BRIDGE_SESSION_NOT_FOUND TRANSFER_PLAN_UNSUPPORTED UNAUTHORIZED SCOPE_MISSING PLAN_REQUIRED INSUFFICIENT_CREDITS RATE_LIMITED GEO_BLOCKED VENUE_REGION_BLOCKED IDEMPOTENCY_KEY_REQUIRED IDEMPOTENCY_CONFLICT ARTIFACT_VERSION_CONFLICT SPEND_CAP_EXCEEDED ARTIFACT_BOUNDS_VIOLATION ARTIFACT_INTEGRITY_MISMATCH VENUE_NOT_SUPPORTED EXECUTION_NOT_FOUND NOT_IMPLEMENTED VENUE_CREDENTIAL_REJECTED VENUE_CREDENTIAL_BREAKER_OPEN GEMINI_TIME_NONCE_REQUIRED GEMINI_HEARTBEAT_KEY_UNSUPPORTED VENUE_RELAY_FAILED EXEC_UNAVAILABLE RAIN_INVALID_OPTION RAIN_INVALID_SIDE RAIN_INVALID_PRICE RAIN_INVALID_AMOUNT RAIN_SLIPPAGE_REQUIRED RAIN_INVALID_DEADLINE RAIN_PHASE_NOT_OPEN RAIN_ORDER_LIMIT_REACHED RAIN_POOL_SAFETY_CHECK_FAILED PLATFORM_UNAVAILABLE PACK_NOT_FOUND BILLING_UNAVAILABLE BILLING_CUSTOMER_REQUIRED INVALID_SIGNATURE FEED_NOT_FOUND FEEDS_UNAVAILABLE FEED_UPSTREAM MATCHES_UNAVAILABLE

retryable

required

boolean

requestId

required

Always present on errors; quote this id when reporting a failed request.

string

exchange

Present only when a venue error is attributed to a specific exchange.

string

Example

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR"
  }
}

429

Enveloped error.

Media typeapplication/json

object

success

required

boolean

error

required

object

message

required

string

code

required

string

Allowed values: VALIDATION_ERROR NOT_SUPPORTED ACCOUNTS_UNSUPPORTED VENUE_NOT_AVAILABLE EXCHANGE_NOT_AVAILABLE MARKET_NOT_FOUND EVENT_NOT_FOUND CLUSTER_NOT_FOUND OUTCOME_NOT_FOUND SNAPSHOT_NOT_FOUND CATALOG_UNAVAILABLE CATALOG_QUERY_TOO_BROAD HISTORY_UNAVAILABLE ROUTE_NOT_FOUND INTERNAL AUTHENTICATION_ERROR PERMISSION_DENIED RATE_LIMIT_EXCEEDED NETWORK_ERROR NOT_FOUND BAD_REQUEST BRIDGE_UNSUPPORTED BRIDGE_UPSTREAM BRIDGE_PROVIDER_UNAVAILABLE BRIDGE_TRANSACTION_NOT_FOUND BRIDGE_SESSION_NOT_FOUND TRANSFER_PLAN_UNSUPPORTED UNAUTHORIZED SCOPE_MISSING PLAN_REQUIRED INSUFFICIENT_CREDITS RATE_LIMITED GEO_BLOCKED VENUE_REGION_BLOCKED IDEMPOTENCY_KEY_REQUIRED IDEMPOTENCY_CONFLICT ARTIFACT_VERSION_CONFLICT SPEND_CAP_EXCEEDED ARTIFACT_BOUNDS_VIOLATION ARTIFACT_INTEGRITY_MISMATCH VENUE_NOT_SUPPORTED EXECUTION_NOT_FOUND NOT_IMPLEMENTED VENUE_CREDENTIAL_REJECTED VENUE_CREDENTIAL_BREAKER_OPEN GEMINI_TIME_NONCE_REQUIRED GEMINI_HEARTBEAT_KEY_UNSUPPORTED VENUE_RELAY_FAILED EXEC_UNAVAILABLE RAIN_INVALID_OPTION RAIN_INVALID_SIDE RAIN_INVALID_PRICE RAIN_INVALID_AMOUNT RAIN_SLIPPAGE_REQUIRED RAIN_INVALID_DEADLINE RAIN_PHASE_NOT_OPEN RAIN_ORDER_LIMIT_REACHED RAIN_POOL_SAFETY_CHECK_FAILED PLATFORM_UNAVAILABLE PACK_NOT_FOUND BILLING_UNAVAILABLE BILLING_CUSTOMER_REQUIRED INVALID_SIGNATURE FEED_NOT_FOUND FEEDS_UNAVAILABLE FEED_UPSTREAM MATCHES_UNAVAILABLE

retryable

required

boolean

requestId

required

Always present on errors; quote this id when reporting a failed request.

string

exchange

Present only when a venue error is attributed to a specific exchange.

string

Example

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR"
  }
}

500

Enveloped error.

Media typeapplication/json

object

success

required

boolean

error

required

object

message

required

string

code

required

string

Allowed values: VALIDATION_ERROR NOT_SUPPORTED ACCOUNTS_UNSUPPORTED VENUE_NOT_AVAILABLE EXCHANGE_NOT_AVAILABLE MARKET_NOT_FOUND EVENT_NOT_FOUND CLUSTER_NOT_FOUND OUTCOME_NOT_FOUND SNAPSHOT_NOT_FOUND CATALOG_UNAVAILABLE CATALOG_QUERY_TOO_BROAD HISTORY_UNAVAILABLE ROUTE_NOT_FOUND INTERNAL AUTHENTICATION_ERROR PERMISSION_DENIED RATE_LIMIT_EXCEEDED NETWORK_ERROR NOT_FOUND BAD_REQUEST BRIDGE_UNSUPPORTED BRIDGE_UPSTREAM BRIDGE_PROVIDER_UNAVAILABLE BRIDGE_TRANSACTION_NOT_FOUND BRIDGE_SESSION_NOT_FOUND TRANSFER_PLAN_UNSUPPORTED UNAUTHORIZED SCOPE_MISSING PLAN_REQUIRED INSUFFICIENT_CREDITS RATE_LIMITED GEO_BLOCKED VENUE_REGION_BLOCKED IDEMPOTENCY_KEY_REQUIRED IDEMPOTENCY_CONFLICT ARTIFACT_VERSION_CONFLICT SPEND_CAP_EXCEEDED ARTIFACT_BOUNDS_VIOLATION ARTIFACT_INTEGRITY_MISMATCH VENUE_NOT_SUPPORTED EXECUTION_NOT_FOUND NOT_IMPLEMENTED VENUE_CREDENTIAL_REJECTED VENUE_CREDENTIAL_BREAKER_OPEN GEMINI_TIME_NONCE_REQUIRED GEMINI_HEARTBEAT_KEY_UNSUPPORTED VENUE_RELAY_FAILED EXEC_UNAVAILABLE RAIN_INVALID_OPTION RAIN_INVALID_SIDE RAIN_INVALID_PRICE RAIN_INVALID_AMOUNT RAIN_SLIPPAGE_REQUIRED RAIN_INVALID_DEADLINE RAIN_PHASE_NOT_OPEN RAIN_ORDER_LIMIT_REACHED RAIN_POOL_SAFETY_CHECK_FAILED PLATFORM_UNAVAILABLE PACK_NOT_FOUND BILLING_UNAVAILABLE BILLING_CUSTOMER_REQUIRED INVALID_SIGNATURE FEED_NOT_FOUND FEEDS_UNAVAILABLE FEED_UPSTREAM MATCHES_UNAVAILABLE

retryable

required

boolean

requestId

required

Always present on errors; quote this id when reporting a failed request.

string

exchange

Present only when a venue error is attributed to a specific exchange.

string

Example

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR"
  }
}

503

Enveloped error.

Media typeapplication/json

object

success

required

boolean

error

required

object

message

required

string

code

required

string

Allowed values: VALIDATION_ERROR NOT_SUPPORTED ACCOUNTS_UNSUPPORTED VENUE_NOT_AVAILABLE EXCHANGE_NOT_AVAILABLE MARKET_NOT_FOUND EVENT_NOT_FOUND CLUSTER_NOT_FOUND OUTCOME_NOT_FOUND SNAPSHOT_NOT_FOUND CATALOG_UNAVAILABLE CATALOG_QUERY_TOO_BROAD HISTORY_UNAVAILABLE ROUTE_NOT_FOUND INTERNAL AUTHENTICATION_ERROR PERMISSION_DENIED RATE_LIMIT_EXCEEDED NETWORK_ERROR NOT_FOUND BAD_REQUEST BRIDGE_UNSUPPORTED BRIDGE_UPSTREAM BRIDGE_PROVIDER_UNAVAILABLE BRIDGE_TRANSACTION_NOT_FOUND BRIDGE_SESSION_NOT_FOUND TRANSFER_PLAN_UNSUPPORTED UNAUTHORIZED SCOPE_MISSING PLAN_REQUIRED INSUFFICIENT_CREDITS RATE_LIMITED GEO_BLOCKED VENUE_REGION_BLOCKED IDEMPOTENCY_KEY_REQUIRED IDEMPOTENCY_CONFLICT ARTIFACT_VERSION_CONFLICT SPEND_CAP_EXCEEDED ARTIFACT_BOUNDS_VIOLATION ARTIFACT_INTEGRITY_MISMATCH VENUE_NOT_SUPPORTED EXECUTION_NOT_FOUND NOT_IMPLEMENTED VENUE_CREDENTIAL_REJECTED VENUE_CREDENTIAL_BREAKER_OPEN GEMINI_TIME_NONCE_REQUIRED GEMINI_HEARTBEAT_KEY_UNSUPPORTED VENUE_RELAY_FAILED EXEC_UNAVAILABLE RAIN_INVALID_OPTION RAIN_INVALID_SIDE RAIN_INVALID_PRICE RAIN_INVALID_AMOUNT RAIN_SLIPPAGE_REQUIRED RAIN_INVALID_DEADLINE RAIN_PHASE_NOT_OPEN RAIN_ORDER_LIMIT_REACHED RAIN_POOL_SAFETY_CHECK_FAILED PLATFORM_UNAVAILABLE PACK_NOT_FOUND BILLING_UNAVAILABLE BILLING_CUSTOMER_REQUIRED INVALID_SIGNATURE FEED_NOT_FOUND FEEDS_UNAVAILABLE FEED_UPSTREAM MATCHES_UNAVAILABLE

retryable

required

boolean

requestId

required

Always present on errors; quote this id when reporting a failed request.

string

exchange

Present only when a venue error is attributed to a specific exchange.

string

Example

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR"
  }
}