---
title: "Stripe → AgentiSend: signature-verified, deduplicated by event id."
method: POST
path: "/webhooks/stripe"
tags: ["billing"]
---

# Stripe → AgentiSend: signature-verified, deduplicated by event id.

`POST /webhooks/stripe`

## Request

- Base URL: `https://api.agentisend.com`
- URL: `https://api.agentisend.com/webhooks/stripe`
- Auth: none required

## Headers

- `Idempotency-Key` string
- `Resend-Idempotency-Key` string

## Response `200`

Success

- PostWebhooksStripeReply
  - `received` true, required
  - `status` 'applied' | 'ignored' | 'duplicate', required
  - `event_id` string, required
  - `event_type` string, required

## Other responses

- `400`: The request is malformed or a field failed validation. Codes: validation_error, invalid_idempotency_key, invalid_cursor, plan_not_purchasable, stripe_signature_invalid, support_upload_rejected, sign_in_check_required.
- `409`: The request conflicts with the current state. Codes: domain_already_exists, template_name_taken, template_alias_taken, template_in_use, segment_in_use, contact_resubscribe_required, email_still_scheduled, domain_verified_elsewhere, domain_not_claimable, return_path_subdomain_in_use, overage_not_on_plan, term_not_on_sale, subscription_active, portal_change_unavailable, already_in_account, idempotency_in_flight, idempotency_payload_mismatch, approval_expired, support_closed, support_reopen_expired, support_merge_conflict, support_reply_too_soon.
- `413`: The request body is larger than this operation accepts. Codes: payload_too_large, support_upload_too_large.
- `415`: The request body is not JSON. Codes: unsupported_media_type.
- `429`: A rate, quota or ramp ceiling was reached. Codes: onboarding_daily_cap_reached, trust_throttled, invite_limit_reached, rate_ceiling_exceeded, daily_quota_exceeded, monthly_quota_exceeded, rate_limit_exceeded, support_rate_limited.
- `500`: Something failed on our side. Codes: internal_server_error.
- `503`: A dependency is unavailable for a moment. Codes: dns_unreachable, service_unavailable, billing_not_configured, rate_limiter_unavailable, sending_paused_everywhere, support_draft_unavailable.

---

[API](https://skmtc.dev/agentisend/apis/agentisend-api.md) · [All operations](https://skmtc.dev/agentisend/apis/agentisend-api/llms.txt) · [OpenAPI document](https://skmtc.dev/agentisend/apis/agentisend-api/revisions/3066dda62a56?raw)