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Slack interactivity (approve and deny from an approval card)

POST
/v1/slack/interact
curl --request POST \
  --url http://127.0.0.1:8080/v1/slack/interact \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --header 'X-Slack-Request-Timestamp: example' \
  --header 'X-Slack-Signature: example' \
  --data payload=example

Slack’s Interactivity Request URL (S29). Not part of the JSON API: Slack posts a form body with one field, payload (Slack’s JSON), signed with the app’s signing secret. Deedglass routes by the payload’s team and app ids, checks X-Slack-Signature (v0= + hex HMAC-SHA256 of v0:{timestamp}:{body}) with that org’s secret, refuses a timestamp more than 300 seconds from now, and acts on one signature once. Every refusal before the signature verifies is a bare 401 with no body. A verified click answers 200 within 2.5 seconds; refusals of the decision (not eligible, self, already decided, expired) reach the person as a message only they can see. A deny opens a form whose submission answers 200, or 200 with {"response_action":"errors",…} when the reason is missing.

Parameters

Section titled “Parameters”

Header Parameters

Section titled “Header Parameters”
X-Slack-Request-Timestamp
required
string
/^[0-9]{1,12}$/
X-Slack-Signature
required
string
/^v0=[0-9a-f]{64}$/

Request Bodyrequired

Section titled “Request Bodyrequired”
Media typeapplication/x-www-form-urlencoded
object
payload
required

Slack’s interaction payload (block_actions or view_submission) as JSON, at most 256 KiB.

string
Examplegenerated
payload=example

Responses

Section titled “Responses”

200

Section titled “200”

Received. The body is empty, or the deny form’s field errors.

Media typeapplication/json
object
response_action
string
Allowed values: errors
errors
object
key
additional properties
string
Example
{
  "response_action": "errors"
}

401

Section titled “401”

Refused (bad or missing signature, stale timestamp, unknown team or app, malformed body). No body.

429

Section titled “429”

Too many requests from this address. No body.

default

Section titled “default”

An error. Every error has this envelope; doc_url explains the code.

Media typeapplication/json
object
error
required
object
type
required
string
Allowed values: invalid_request_error authentication_error permission_error policy_error rate_limit_error api_error
code
required
string
Allowed values: invalid_api_key api_key_revoked api_key_expired agent_suspended agent_stopped org_stopped insufficient_scope policy_denied approval_required approval_expired budget_exceeded intent_required intent_invalid intent_replay tool_unknown connector_unavailable upstream_error timeout rate_limited idempotency_conflict validation_failed not_found conflict internal_error authentication_required method_not_allowed request_too_large unsupported_media_type invalid_json api_version_invalid idempotency_key_invalid idempotency_key_in_use service_unavailable session_expired csrf_failed insufficient_role login_link_invalid login_code_invalid last_owner policy_unavailable policy_invalid credentials_missing destination_blocked vault_unavailable upstream_auth_failed upstream_not_found upstream_rate_limited response_too_large statement_refused row_limit_exceeded database_role_unsafe database_not_ready witness_not_configured approval_decided already_countersigned approver_not_eligible self_approval approval_needs_person context_changed approval_unsatisfiable approval_link_invalid approval_link_review_only approver_unmapped stripe_live_key_refused stripe_livemode_detected upstream_approval_pending schedule_needs_approval action_executing from_denied undo_unavailable undo_plan_stale already_undone undo_conflict replay_too_large replay_window_invalid suggestion_stale shadow_slot_taken suggestion_decided observe_not_enabled pro_required
message
required

One or more calm sentences with the next step.

string
param
required

The request field, query parameter or header the error is about.

string | null
request_id
required
string
/^req_[0-7][0-9a-hjkmnp-tv-z]{25}$/
doc_url
required
string format: uri
diagnostics

On policy_invalid only. Each problem with its line, code and hint.

Array<object>

One finding about a policy file, with its position and the next step. Codes are stable and listed in docs/POLICY_ERRORS.md. In the policy_invalid error envelope each diagnostic also carries object: policy_diagnostic. The full PolicyDiagnostic schema is in openapi.yaml.

object
action

One agent action. Its sections mirror the deed’s. status is the one field an agent needs; state is the exact lifecycle state (docs/GATE.md). The Gate’s own responses (POST /v1/actions and its result report) add execution.result and witness.reasons; lists leave both out. The full Action schema is in openapi.yaml.

object
checks

On undo_unavailable only. Every check of the undo, each with its fix. Additive (S23).

Array<object>

One of the twelve safety checks (S23 §3.3). Available means no check failed. The full UndoCheck schema is in openapi.yaml.

object
Example
{
  "error": {
    "type": "invalid_request_error",
    "code": "not_found",
    "message": "There's no endpoint at GET /v1/helth. Did you mean /v1/health?",
    "param": null,
    "request_id": "req_01j9zr3m5k8q2w7x4t6v0b1c9d",
    "doc_url": "https://docs.deedglass.com/errors/not_found"
  }
}

Headers

Section titled “Headers”
Deedglass-Request-Id
string
/^req_[0-7][0-9a-hjkmnp-tv-z]{25}$/

This request’s id. Quote it to support; it matches error.request_id.

Deedglass-Version
string

The API version this response follows.