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Sign in an AI account for the workspace or for yourself

POST
/connections/ai-accounts/sign-in

Constraints not expressible in JSON Schema, enforced at runtime:

  • An engine-account label must not begin or end with whitespace and must contain no control characters (U+0000–U+001F, U+007F).

May require, depending on the request: connections.write, connections.org.write

x-uai-org
string

Org scope: me or an org slug. Absent means the caller’s active/personal org. It selects the workspace used for permission checks and for most resource filters; operation-specific access rules still apply.

object
scope
required

org: the workspace’s accounts, used by every member’s tasks; me: the caller’s own, in this workspace.

string
Allowed values: org me
engine
required
string
Allowed values: claude codex grok
label
required
string
>= 1 characters <= 64 characters
accountId

Sign in again to this existing account instead of adding one.

string
>= 1 characters <= 128 characters

Server-sent event stream for the sign-in.

string

BAD_JSON — the body is not valid JSON, or INVALID_REQUEST — the decoded body does not match the route’s request schema.

object
error
required
object
code
required

Stable, machine-readable error code

string
message
required

Human-readable explanation

string
details
permission

Present on 403 — the permission the caller lacked

string
feature

Present on 402 — gated feature

string
limit

Present on 402 — the plan’s cap

number
plan

Present on 402 — the current plan

string
seats

Present on 402 when the cap is seat-derived

object
seats
required

Effective seats the cap was computed from

integer
seatsMax
required
Any of:
integer
perSeat
required

Units of the resource each seat carries

number
key
additional properties
any

UNAUTHORIZED — missing or invalid token, or an org-scoped API key (only user-scoped keys are accepted).

object
error
required
object
code
required

Stable, machine-readable error code

string
message
required

Human-readable explanation

string
details
permission

Present on 403 — the permission the caller lacked

string
feature

Present on 402 — gated feature

string
limit

Present on 402 — the plan’s cap

number
plan

Present on 402 — the current plan

string
seats

Present on 402 when the cap is seat-derived

object
seats
required

Effective seats the cap was computed from

integer
seatsMax
required
Any of:
integer
perSeat
required

Units of the resource each seat carries

number
key
additional properties
any

PLAN_LIMIT — the workspace’s plan does not include API access. Every API-key call can return this; session-token calls never do.

object
error
required
object
code
required

Stable, machine-readable error code

string
message
required

Human-readable explanation

string
details
permission

Present on 403 — the permission the caller lacked

string
feature

Present on 402 — gated feature

string
limit

Present on 402 — the plan’s cap

number
plan

Present on 402 — the current plan

string
seats

Present on 402 when the cap is seat-derived

object
seats
required

Effective seats the cap was computed from

integer
seatsMax
required
Any of:
integer
perSeat
required

Units of the resource each seat carries

number
key
additional properties
any

FORBIDDEN (lacking the required permission) or SCOPE_REQUIRED (no workspace, or a membership change in progress).

object
error
required
object
code
required

Stable, machine-readable error code

string
message
required

Human-readable explanation

string
details
permission

Present on 403 — the permission the caller lacked

string
feature

Present on 402 — gated feature

string
limit

Present on 402 — the plan’s cap

number
plan

Present on 402 — the current plan

string
seats

Present on 402 when the cap is seat-derived

object
seats
required

Effective seats the cap was computed from

integer
seatsMax
required
Any of:
integer
perSeat
required

Units of the resource each seat carries

number
key
additional properties
any

SCOPE_REQUIRED — the x-uai-org scope names a workspace that does not exist, or one the caller is not a member of. The two are deliberately indistinguishable: a 403 would confirm the workspace exists.

object
error
required
object
code
required

Stable, machine-readable error code

string
message
required

Human-readable explanation

string
details
permission

Present on 403 — the permission the caller lacked

string
feature

Present on 402 — gated feature

string
limit

Present on 402 — the plan’s cap

number
plan

Present on 402 — the current plan

string
seats

Present on 402 when the cap is seat-derived

object
seats
required

Effective seats the cap was computed from

integer
seatsMax
required
Any of:
integer
perSeat
required

Units of the resource each seat carries

number
key
additional properties
any

PAYLOAD_TOO_LARGE — the request body exceeds 1024 bytes.

object
error
required
object
code
required

Stable, machine-readable error code

string
message
required

Human-readable explanation

string
details
permission

Present on 403 — the permission the caller lacked

string
feature

Present on 402 — gated feature

string
limit

Present on 402 — the plan’s cap

number
plan

Present on 402 — the current plan

string
seats

Present on 402 when the cap is seat-derived

object
seats
required

Effective seats the cap was computed from

integer
seatsMax
required
Any of:
integer
perSeat
required

Units of the resource each seat carries

number
key
additional properties
any

SCOPE_REQUIRED — membership reconciliation required, or membership verification unavailable.

object
error
required
object
code
required

Stable, machine-readable error code

string
message
required

Human-readable explanation

string
details
permission

Present on 403 — the permission the caller lacked

string
feature

Present on 402 — gated feature

string
limit

Present on 402 — the plan’s cap

number
plan

Present on 402 — the current plan

string
seats

Present on 402 when the cap is seat-derived

object
seats
required

Effective seats the cap was computed from

integer
seatsMax
required
Any of:
integer
perSeat
required

Units of the resource each seat carries

number
key
additional properties
any