Skip to content
KataraKatara documentation
This is the staging documentation, where Katara rehearses releases. Live and Test both settle on Avalanche Fuji in test USDC here.

Submit an externally signed source event

POST
/katara/v1/orgs/{org_id}/environments/{environment_id}/event-sources/{source_id}/events
curl --request POST \
  --url https://api.staging.katara.com/katara/v1/orgs/2489E9AD-2EE2-8E00-8EC9-32D5F69181C0/environments/2489E9AD-2EE2-8E00-8EC9-32D5F69181C0/event-sources/2489E9AD-2EE2-8E00-8EC9-32D5F69181C0/events \
  --header 'Content-Type: application/json' \
  --header 'X-Katara-Event-Signature: example' \
  --data '{ "org_id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "environment_id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "schema_version": 1, "source_id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "source_version": { "id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "version": 1, "integrity": "example" }, "activation_generation": 1, "mode": "test", "reset_generation": 1, "event_id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "occurred_at": "2026-04-15T12:00:00Z", "input_ref": { "org_id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "environment_id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "version": 1, "integrity": "example", "media_type": "application/json", "size_bytes": 1 }, "signed_at": "2026-04-15T12:00:00Z" }'

Server-to-server signed producer ingress. Body1–16384 raw bytes; exact application/json Content-Type. Authorization, Cookie, Origin, Idempotency-Key, Content-Encoding and query parameters are refused. Sign Ed25519 over UTF8(katara.synapse.event.v1), NUL, UTF8(enrolled signing key UUID), NUL, and ASCII(sha256: plus lowercase SHA256 hex of the exact transmitted body bytes). Send canonical padded base64 of the 64-byte signature. Keep the private key exclusively at the external source. Whole-second UTC signed_at must be newer than 5 minutes ago, at most 30 seconds in the future and no earlier than occurred_at. A fresh signature may repeat unchanged semantic event metadata, subject to current source authority. Altered semantic fields conflict with the existing receipt. Source existence, invalid signatures and revoked authority share HTTP403. A persisted receipt does not prove run execution. The portal never sends signed events.

Parameters

Section titled “Parameters”

Path Parameters

Section titled “Path Parameters”
org_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
environment_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
source_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000

Header Parameters

Section titled “Header Parameters”
X-Katara-Event-Signature
required
string
/^[A-Za-z0-9+/]{85}[AQgw]==$/

Request Bodyrequired

Section titled “Request Bodyrequired”
Media typeapplication/json
object
org_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
environment_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
schema_version
required
Allowed value: 1
source_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
source_version
required
object
id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
version
required
integer
>= 1 <= 9223372036854776000
integrity
required
string
/^sha256:[a-f0-9]{64}$/
activation_generation
required
integer
>= 1 <= 9007199254740991
mode
required
Allowed values: test live
reset_generation
required
integer
>= 1 <= 9007199254740991
event_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
occurred_at
required
string format: date-time
/^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\dZ$/
input_ref
object
org_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
environment_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
version
required
integer
>= 1 <= 9223372036854776000
integrity
required
string
/^sha256:[a-f0-9]{64}$/
media_type
required
Allowed values: text/plain text/markdown application/json application/pdf application/vnd.openxmlformats-officedocument.wordprocessingml.document image/png image/jpeg text/csv application/zip
size_bytes
required
integer
<= 104857600
media_type
required
Allowed value: application/json
version
required
integer
>= 1 <= 9007199254740991
signed_at
required
string format: date-time
/^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\dZ$/

Responses

Section titled “Responses”

202

Section titled “202”

Persisted signed-event receipt. Admission and run execution remain separate.

Media typeapplication/json
object
org_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
environment_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
source_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
event_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
reset_generation
required
integer
>= 1 <= 9007199254740991
version_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
activation_generation
required
integer
>= 1 <= 9007199254740991
event
required
object
org_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
environment_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
schema_version
required
Allowed value: 1
source_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
source_version
required
object
id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
version
required
integer
>= 1 <= 9223372036854776000
integrity
required
string
/^sha256:[a-f0-9]{64}$/
activation_generation
required
integer
>= 1 <= 9007199254740991
mode
required
Allowed values: test live
reset_generation
required
integer
>= 1 <= 9007199254740991
event_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
occurred_at
required
string format: date-time
/^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\dZ$/
input_ref
object
org_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
environment_id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
id
required
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
version
required
integer
>= 1 <= 9223372036854776000
integrity
required
string
/^sha256:[a-f0-9]{64}$/
media_type
required
Allowed values: text/plain text/markdown application/json application/pdf application/vnd.openxmlformats-officedocument.wordprocessingml.document image/png image/jpeg text/csv application/zip
size_bytes
required
integer
<= 104857600
media_type
required
Allowed value: application/json
version
required
integer
>= 1 <= 9007199254740991
digest
required
string
/^sha256:[a-f0-9]{64}$/
received_at
required
string format: date-time
/^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d(?:\.\d{0,8}[1-9])?Z$/
Allowed value: 0001-01-01T00:00:00Z
expires_at
required
string format: date-time
/^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d(?:\.\d{0,8}[1-9])?Z$/
Allowed value: 0001-01-01T00:00:00Z
state
required
Allowed values: pending admitted denied expired
run_id
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
projection_version
required
integer
>= 1 <= 9007199254740991
Example
{
  "event": {
    "schema_version": 1,
    "mode": "test",
    "input_ref": {
      "media_type": "application/json"
    }
  },
  "state": "pending"
}

Headers

Section titled “Headers”
Cache-Control
string
Allowed value: no-store

default

Section titled “default”

Request error

Media typeapplication/json
object
error
required
object
message
required
string
>= 1 characters <= 500 characters
type
required
string
>= 1 characters <= 100 characters
code
required

Stable; branch on it. Any operation can answer invalid_request, with param naming the refused field when there is one; human_session_required, when an API key, service account or workload calls an operation only a signed-in person may perform; reauthentication_required, when a person’s sign-in is too old for the operation; permission_denied; route_not_found and method_not_allowed, when no operation matches the path or method; and feature_unavailable, when the operation’s service is not enabled on this deployment.

string
>= 1 characters <= 100 characters
param
required

The request field a refusal is about, such as the agent_id or run_id query parameter; null when the refusal is not about one field.

string | null
request_id
required
string
>= 1 characters <= 100 characters
upstream_status
required
integer | null
action
Allowed values: sign_in reauthenticate request_access review fund retry reconcile refresh support
operation_id
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
snapshot_ref
string format: uuid
/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/
Allowed value: 00000000-0000-0000-0000-000000000000
Example
{
  "error": {
    "action": "sign_in"
  }
}