MCP Server
WebhookTest.net
net.webhooktest/webhook-tester
What this MCP does
Creates temporary webhook endpoints for capturing, inspecting, waiting for, and configuring HTTP webhook responses.
Capabilities
Tools
8
tools
clear_webhooks
Clear captured webhooks
Permanently delete every capture in a bucket. Requires confirm=true.
Destructive
Input schema
{'type': 'object', 'required': ['bucket_id', 'confirm'], 'properties': {'confirm': {'type': 'boolean', 'description': 'must be true to perform this destructive action'}, 'bucket_id': {'type': 'string'}}, 'additionalProperties': False}
Output schema
{'type': 'object', 'properties': {'error': {'type': ['null', 'object'], 'required': ['code', 'message'], 'properties': {'code': {'type': 'string'}, 'limit': {'type': 'integer'}, 'message': {'type': 'string'}, 'retry_after_seconds': {'type': 'integer'}}, 'additionalProperties': False}, 'success': {'type': 'boolean'}}, 'additionalProperties': False}
configure_webhook_response
Configure webhook response
Set the status, content type (JSON, plain text, XML, or form-encoded), body, optional Retry-After or X-Hook-Secret header, and a delay up to 10 seconds returned by the webhook endpoint. Browser visits always receive plain text.
Input schema
{'type': 'object', 'required': ['bucket_id', 'status', 'content_type', 'body'], 'properties': {'body': {'type': 'string'}, 'status': {'type': 'integer'}, 'headers': {'type': 'object', 'description': 'optional response headers; only Retry-After and X-Hook-Secret are supported, matched case-insensitively', 'additionalProperties': {'type': 'string'}}, 'delay_ms': {'type': 'integer', 'description': 'response delay in milliseconds, from 0 to 10000'}, 'bucket_id': {'type': 'string'}, 'content_type': {'type': 'string', 'description': 'application/json, text/plain, application/xml, text/xml, application/soap+xml, application/problem+xml, application/x-www-form-urlencoded, or application/*+json; only a charset parameter is allowed; empty selects application/json'}}, 'additionalProperties': False}
Output schema
{'type': 'object', 'properties': {'error': {'type': ['null', 'object'], 'required': ['code', 'message'], 'properties': {'code': {'type': 'string'}, 'limit': {'type': 'integer'}, 'message': {'type': 'string'}, 'retry_after_seconds': {'type': 'integer'}}, 'additionalProperties': False}, 'success': {'type': 'boolean'}}, 'additionalProperties': False}
create_webhook_bucket
Create webhook bucket
Create an anonymous temporary webhook capture bucket. The returned bucket ID is a bearer capability and expires after 15 days of inactivity.
Input schema
{'type': 'object', 'properties': {'name': {'type': 'string', 'description': 'optional display name for the bucket'}, 'controlled_test': {'type': 'boolean', 'description': "set true only for maintainer QA or automated evaluations; not for a real user's first test"}}, 'additionalProperties': False}
Output schema
{'type': 'object', 'properties': {'id': {'type': 'string'}, 'name': {'type': 'string'}, 'error': {'type': ['null', 'object'], 'required': ['code', 'message'], 'properties': {'code': {'type': 'string'}, 'limit': {'type': 'integer'}, 'message': {'type': 'string'}, 'retry_after_seconds': {'type': 'integer'}}, 'additionalProperties': False}, 'dashboard_url': {'type': 'string'}, 'webhook_endpoint': {'type': 'string'}, 'inactivity_policy': {'type': 'string'}}, 'additionalProperties': False}
delete_webhook_bucket
Delete webhook bucket
Permanently delete a bucket and all of its captures. Requires confirm=true.
Destructive
Input schema
{'type': 'object', 'required': ['bucket_id', 'confirm'], 'properties': {'confirm': {'type': 'boolean', 'description': 'must be true to perform this destructive action'}, 'bucket_id': {'type': 'string'}}, 'additionalProperties': False}
Output schema
{'type': 'object', 'properties': {'error': {'type': ['null', 'object'], 'required': ['code', 'message'], 'properties': {'code': {'type': 'string'}, 'limit': {'type': 'integer'}, 'message': {'type': 'string'}, 'retry_after_seconds': {'type': 'integer'}}, 'additionalProperties': False}, 'success': {'type': 'boolean'}}, 'additionalProperties': False}
get_webhook
Get captured webhook
Read one webhook capture scoped to its bucket. Sensitive headers and query values are redacted by default.
Read only
Input schema
{'type': 'object', 'required': ['bucket_id', 'webhook_id'], 'properties': {'bucket_id': {'type': 'string'}, 'webhook_id': {'type': 'string'}, 'max_body_bytes': {'type': 'integer', 'description': 'maximum body bytes to return; defaults to 65536 and cannot exceed 262144'}, 'include_sensitive': {'type': 'boolean', 'description': 'return sensitive header and query values; defaults to false'}}, 'additionalProperties': False}
Output schema
{'type': 'object', 'properties': {'error': {'type': ['null', 'object'], 'required': ['code', 'message'], 'properties': {'code': {'type': 'string'}, 'limit': {'type': 'integer'}, 'message': {'type': 'string'}, 'retry_after_seconds': {'type': 'integer'}}, 'additionalProperties': False}, 'webhook': {'type': ['null', 'object'], 'required': ['id', 'bucket_id', 'method', 'headers', 'query', 'body', 'created_at', 'body_bytes', 'body_returned_bytes', 'body_truncated', 'sensitive_included', 'dashboard_url'], 'properties': {'id': {'type': 'string'}, 'body': {'type': 'string'}, 'query': {'type': 'object', 'additionalProperties': True}, 'method': {'type': 'string'}, 'headers': {'type': 'object', 'additionalProperties': True}, 'bucket_id': {'type': 'string'}, 'body_bytes': {'type': 'integer'}, 'created_at': {'type': 'string'}, 'dashboard_url': {'type': 'string'}, 'body_truncated': {'type': 'boolean'}, 'redacted_fields': {'type': ['null', 'array'], 'items': {'type': 'string'}}, 'sensitive_included': {'type': 'boolean'}, 'body_returned_bytes': {'type': 'integer'}}, 'additionalProperties': False}}, 'additionalProperties': False}
get_webhook_bucket
Get webhook bucket
Read a bucket name and its configured HTTP response settings.
Read only
Input schema
{'type': 'object', 'required': ['bucket_id'], 'properties': {'bucket_id': {'type': 'string', 'description': 'bucket capability ID'}}, 'additionalProperties': False}
Output schema
{'type': 'object', 'properties': {'id': {'type': 'string'}, 'name': {'type': 'string'}, 'error': {'type': ['null', 'object'], 'required': ['code', 'message'], 'properties': {'code': {'type': 'string'}, 'limit': {'type': 'integer'}, 'message': {'type': 'string'}, 'retry_after_seconds': {'type': 'integer'}}, 'additionalProperties': False}, 'dashboard_url': {'type': 'string'}, 'response_body': {'type': 'string'}, 'response_status': {'type': 'integer'}, 'response_headers': {'type': 'object', 'additionalProperties': {'type': 'string'}}, 'webhook_endpoint': {'type': 'string'}, 'response_delay_ms': {'type': 'integer'}, 'response_content_type': {'type': 'string'}}, 'additionalProperties': False}
list_webhooks
List captured webhooks
List webhook capture summaries in newest-first order using cursor pagination.
Read only
Input schema
{'type': 'object', 'required': ['bucket_id'], 'properties': {'limit': {'type': 'integer', 'description': 'number of summaries to return, from 1 to 50'}, 'cursor': {'type': 'string', 'description': 'opaque cursor returned by a previous call'}, 'bucket_id': {'type': 'string'}}, 'additionalProperties': False}
Output schema
{'type': 'object', 'properties': {'error': {'type': ['null', 'object'], 'required': ['code', 'message'], 'properties': {'code': {'type': 'string'}, 'limit': {'type': 'integer'}, 'message': {'type': 'string'}, 'retry_after_seconds': {'type': 'integer'}}, 'additionalProperties': False}, 'has_more': {'type': 'boolean'}, 'webhooks': {'type': ['null', 'array'], 'items': {'type': 'object', 'required': ['id', 'method', 'created_at', 'body_bytes'], 'properties': {'id': {'type': 'string'}, 'method': {'type': 'string'}, 'body_bytes': {'type': 'integer'}, 'created_at': {'type': 'string'}}, 'additionalProperties': False}}, 'next_cursor': {'type': 'string'}, 'dashboard_url': {'type': 'string'}}, 'additionalProperties': False}
wait_for_webhook
Wait for a webhook
Return the latest capture, wait for a newer capture, or report received=false after the timeout.
Read only
Input schema
{'type': 'object', 'required': ['bucket_id'], 'properties': {'bucket_id': {'type': 'string'}, 'wait_seconds': {'type': 'integer', 'description': 'seconds to wait; defaults to 20 and cannot exceed 25'}, 'max_body_bytes': {'type': 'integer'}, 'after_webhook_id': {'type': 'string', 'description': 'wait for a capture newer than this webhook ID'}, 'include_sensitive': {'type': 'boolean'}}, 'additionalProperties': False}
Output schema
{'type': 'object', 'required': ['received'], 'properties': {'error': {'type': ['null', 'object'], 'required': ['code', 'message'], 'properties': {'code': {'type': 'string'}, 'limit': {'type': 'integer'}, 'message': {'type': 'string'}, 'retry_after_seconds': {'type': 'integer'}}, 'additionalProperties': False}, 'webhook': {'type': ['null', 'object'], 'required': ['id', 'bucket_id', 'method', 'headers', 'query', 'body', 'created_at', 'body_bytes', 'body_returned_bytes', 'body_truncated', 'sensitive_included', 'dashboard_url'], 'properties': {'id': {'type': 'string'}, 'body': {'type': 'string'}, 'query': {'type': 'object', 'additionalProperties': True}, 'method': {'type': 'string'}, 'headers': {'type': 'object', 'additionalProperties': True}, 'bucket_id': {'type': 'string'}, 'body_bytes': {'type': 'integer'}, 'created_at': {'type': 'string'}, 'dashboard_url': {'type': 'string'}, 'body_truncated': {'type': 'boolean'}, 'redacted_fields': {'type': ['null', 'array'], 'items': {'type': 'string'}}, 'sensitive_included': {'type': 'boolean'}, 'body_returned_bytes': {'type': 'integer'}}, 'additionalProperties': False}, 'received': {'type': 'boolean'}}, 'additionalProperties': False}
History
Recent tool changes
Changed
configure_webhook_response
Oct. 1, 2026, 2:51 a.m.
Changed
create_webhook_bucket
Sept. 21, 2026, 2:57 a.m.
Added
wait_for_webhook
Sept. 17, 2026, 12:54 p.m.
Added
list_webhooks
Sept. 17, 2026, 12:54 p.m.
Added
get_webhook_bucket
Sept. 17, 2026, 12:54 p.m.
Added
get_webhook
Sept. 17, 2026, 12:54 p.m.
Added
delete_webhook_bucket
Sept. 17, 2026, 12:54 p.m.
Added
create_webhook_bucket
Sept. 17, 2026, 12:54 p.m.
Added
configure_webhook_response
Sept. 17, 2026, 12:54 p.m.
Added
clear_webhooks
Sept. 17, 2026, 12:54 p.m.
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