Webhooks

Create a webhook endpoint

POSThttps://ecdsa.com/api/v1/webhooks

Creates a webhook endpoint for the API key's account. Creating one with a URL the account already has updates its description and event filter and switches it back on if it was switched off. The URL must be https on port 443 with a public host name; the host is resolved and refused when any of its addresses is private or reserved (webhook_url_refused). The number of endpoints is limited by the account's plan (webhook_limit_reached). Deliveries are POST requests with a JSON body, signed with ECDSA P-256 (ES256): headers ECDSA-Webhook-Id, ECDSA-Webhook-Timestamp and ECDSA-Signature (t=<unix seconds>,kid=<key id>,es256=<base64url r‖s>) over the UTF-8 bytes of "<id>.<t>.<raw body>". The public keys are the JWKS at https://ecdsa.com/.well-known/ecdsa-webhook-keys.json; every official SDK verifies deliveries with verifyWebhook().

API キー: 必須（webhooks スコープが必要）
キー使用時のクォータ消費: 呼び出しごとに 1 ユニット
レート制限: IP あたり毎分 60 リクエスト

リクエスト

JSON ボディ：CreateWebhookRequest

フィールド	型	必須	説明
url	string	はい	Where deliveries are POSTed: an https URL on port 443 with a public host name, at most 2048 characters.
description	string	いいえ	A note for yourself, at most 200 characters. 200 文字以下
events	string[]	いいえ	Event types to receive ("monitor.grade_changed") or whole families ("monitor.*"); absent or empty receives every event. At most 20 entries. 要素数 20 以下

フィールド

型

必須

説明

url

string

はい

Where deliveries are POSTed: an https URL on port 443 with a public host name, at most 2048 characters.

description

string

いいえ

A note for yourself, at most 200 characters.

200 文字以下

events

string[]

いいえ

Event types to receive ("monitor.grade_changed") or whole families ("monitor.*"); absent or empty receives every event. At most 20 entries.

要素数 20 以下

レスポンス

200The endpoint, created or updated.

フィールド	型	必須	説明
endpoint	WebhookEndpoint	はい
created	boolean	はい	false when the account already had an endpoint with this URL and it was updated.

ヘッダー： X-Request-Id · X-RateLimit-Limit · X-RateLimit-Remaining · X-RateLimit-Reset · X-Quota-Limit · X-Quota-Remaining · X-Quota-Reset

ステータス	意味	コード
400	Bad request. Input limits: a request body of at most 100 KB (a larger one is answered with 413) and arrays and objects nested at most 64 levels deep, JSON documents inside string fields included.	invalid_json missing_field invalid_input private_key_rejected webhook_url_refused
401	Unauthorized.	unauthorized
403	Forbidden.	forbidden_scope webhook_limit_reached
404	Not found.	not_found
405	Method not allowed.	method_not_allowed
413	Payload too large.	payload_too_large
429	Too many requests.	rate_limited quota_exceeded
500	Internal server error.	internal_error
503	Service unavailable.	service_unavailable webhooks_unavailable
504	Gateway timeout.	timeout

エラーのレスポンスにはすべて JSON エンベロープが含まれます。各コードの意味と対処法はエラー一覧表で確認できます。

例

Receive every monitoring event

curl

curl -sS 'https://ecdsa.com/api/v1/webhooks' \
  -H "authorization: Bearer $ECDSA_API_KEY" \
  -H 'content-type: application/json' \
  -d '{
  "url": "https://hooks.example.com/ecdsa",
  "description": "Production alerts",
  "events": [
    "monitor.*"
  ]
}'

JavaScript (fetch)

const response = await fetch("https://ecdsa.com/api/v1/webhooks", {
  method: "POST",
  headers: { "content-type": "application/json", authorization: `Bearer ${process.env.ECDSA_API_KEY}` },
  body: JSON.stringify({
    "url": "https://hooks.example.com/ecdsa",
    "description": "Production alerts",
    "events": [
      "monitor.*"
    ]
  }),
});
console.log(response.status, await response.json());

Python (httpx)

import os

import httpx

response = httpx.post(
    "https://ecdsa.com/api/v1/webhooks",
    headers={"authorization": f"Bearer {os.environ['ECDSA_API_KEY']}"},
    json={
        "url": "https://hooks.example.com/ecdsa",
        "description": "Production alerts",
        "events": [
            "monitor.*",
        ],
    },
    timeout=30.0,
)
print(response.status_code, response.json())

レスポンス 200

{
  "endpoint": {
    "id": "7349e17c-8b41-4fc1-b1a9-dca88578ca1c",
    "url": "https://hooks.example.com/ecdsa",
    "description": "Production alerts",
    "events": [
      "monitor.*"
    ],
    "enabled": true,
    "createdAt": "2026-10-20T07:34:27.000Z",
    "disabledAt": null,
    "disabledReason": null,
    "lastDelivery": null
  },
  "created": true
}

この例に対する API のレスポンスです。2026年10月20日にこのページ用に取得したもので、含まれる相対時間や日数はその日を基準にしています。

エラーコード

コード	ステータス	意味
invalid_json	400	The body is not valid JSON or not a JSON object; or the input nests arrays and objects more than 64 levels deep (JSON documents inside string fields count too), or is too complex to inspect for private keys.
missing_field	400	A required field is absent or empty.
invalid_input	400	A field could not be parsed — the message explains exactly why.
private_key_rejected	400	The request contains private-key material (a PEM PRIVATE KEY block, an OpenSSH, SSH2 or PuTTY private key, or a JWK with "d"). Never send private keys anywhere.
webhook_url_refused	400	The webhook URL cannot receive deliveries: it is not https on port 443, its host is not a public DNS name, or the name does not resolve or resolves (at least partly) to a private or reserved address.
unauthorized	401	The Authorization or X-API-Key header is malformed, the API key is not valid (wrong checksum, unknown, revoked or expired), or the operation needs a key.
forbidden_scope	403	The API key is valid but lacks a scope this operation requires; the message names it.
webhook_limit_reached	403	The account already has as many webhook endpoints as its plan allows.
not_found	404	No operation exists at this path.
method_not_allowed	405	The path exists but does not accept this HTTP method; see the Allow header.
payload_too_large	413	The body exceeds 100 KB.
rate_limited	429	Too many requests — see Retry-After.
quota_exceeded	429	A daily or monthly quota of the API key's account is used up. X-Quota-Reset (and Retry-After) say when it starts over; retrying earlier cannot succeed.
internal_error	500	Unexpected server error.
service_unavailable	503	API keys cannot be verified right now (the key store is unreachable); retry shortly.
webhooks_unavailable	503	Webhooks are switched off on this server: it has no signing keys configured.
timeout	504	The operation did not finish within its time budget.

スキーマ

WebhookEndpoint

フィールド	型	必須	説明
id	string	はい	形式 uuid パターン ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}\|00000000-0000-0000-0000-000000000000\|ffffffff-ffff-ffff-ffff-ffffffffffff)$
url	string	はい
description	string \| null	はい
events	string[]	はい	Subscribed event types or families ("monitor.*"); empty receives every event.
enabled	boolean	はい
createdAt	string	はい	UTC time, ISO 8601. 形式 date-time
disabledAt	string \| null	はい
disabledReason	string \| null	はい	Why deliveries stopped: "consecutive_failures" after five failed deliveries in a row.
lastDelivery	WebhookDelivery \| null	はい

WebhookDelivery

フィールド	型	必須	説明
id	string	はい	Delivery id, sent as ECDSA-Webhook-Id and as the body's id; the same on every retry.
type	string	はい	Event type, e.g. "monitor.grade_changed" or "webhook.test".
status	string	はい	"pending"、"delivered"、または"failed" のいずれか
attempts	integer	はい	0 以上
createdAt	string	はい	UTC time, ISO 8601. 形式 date-time
lastAttemptAt	string \| null	はい
lastStatusCode	integer \| null	はい	HTTP status of the last attempt; null when no response arrived.
lastError	string \| null	はい	Why the last attempt failed: "http_status" (any status outside 200–299, redirects included), "timeout", "address_refused", "tls_certificate", "endpoint_disabled", … ; null after a success.
nextAttemptAt	string \| null	はい	When a pending delivery is tried again.
deliveredAt	string \| null	はい

Error

The error envelope of every non-2xx response.

フィールド	型	必須	説明
error	object	はい
error.code	string	はい	Machine-readable error code. Each response lists the codes it can carry; new codes may be added within v1, so treat an unknown code by its HTTP status.
error.message	string	はい	Human-readable explanation (English).
error.requestId	string	いいえ	The X-Request-Id of this request — quote it when reporting a problem. Sent since v1.1.
error.detail	object	いいえ	Structured context for the error, such as the offending field; omitted when there is none. メンバー名は任意
error.docs	string	いいえ	Where the error codes are explained. Sent since v1.1. 形式 uri

すべての操作は API リファレンスに掲載しています。