Openhook
REMOTE · OPENHOOK.DEV
Webhook, email and DNS inboxes for AI agents to capture callbacks and test integrations.
Available components
Last scanned (4 hours ago)
Scores higher than 46% of remote servers
Reachable. Last reached 17 Oct 2026.
Category Workflow Automation
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security57
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (create_webhook). See how to fix → View diagnostics → Fail
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability70
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (fair).Partial
- Tool/resource definitions use about 1481 tokens (~46/item across 32 items; 29 tools + 3 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management10
- Stability observed for 3 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage67
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- All 6 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 31 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 17 Oct 26 0
- Tool “access_hosted_inbox” is now declared destructive security
- Tool “configure_webhook” is now declared destructive security
- Tool “create_webhook” is now declared destructive security
- Tool “register_github_webhook” is now declared destructive security
- Tool “register_linear_webhook” is now declared destructive security
- Tool “register_stripe_webhook” is now declared destructive security
- Tool “respond_to_next_request” is now declared destructive security
- Tool “send_requests” is now declared destructive security
- Tool “update_request” is now declared destructive security
- Tool “access_hosted_inbox” changed its title: Access hosted inbox cosmetic
- Tool “check_for_callbacks” changed its title: Check for new callbacks cosmetic
- Tool “configure_webhook” changed its title: Configure webhook inbox cosmetic
- Tool “create_webhook” changed its title: Create webhook inbox cosmetic
- Tool “delete_all_requests” changed its title: Delete all captured events cosmetic
- Tool “delete_request” changed its title: Delete captured event cosmetic
- Tool “delete_webhook” changed its title: Delete webhook inbox cosmetic
- Tool “download_request_file” changed its title: Download captured content cosmetic
- Tool “export_webhook_data” changed its title: Export captured events cosmetic
- Tool “extract_links_from_request” changed its title: Extract captured links cosmetic
- Tool “generate_oob_payloads” changed its title: Get out-of-band callback addresses cosmetic
- Tool “get_hosted_inboxes” changed its title: List hosted inboxes cosmetic
- Tool “get_request” changed its title: Read captured event cosmetic
- Tool “get_webhook_activity” changed its title: Read inbox activity cosmetic
- Tool “get_webhook_email” changed its title: Get inbox email address cosmetic
- Tool “get_webhook_info” changed its title: Inspect webhook inbox cosmetic
- Tool “get_webhook_requests” changed its title: List captured events cosmetic
- Tool “register_github_webhook” changed its title: Register GitHub webhook cosmetic
- Tool “register_linear_webhook” changed its title: Register Linear webhook cosmetic
- Tool “register_stripe_webhook” changed its title: Register Stripe webhook cosmetic
- Tool “respond_to_next_request” changed its title: Configure next callback response cosmetic
- Tool “rotate_webhook_token” changed its title: Rotate inbox token cosmetic
- Tool “search_requests” changed its title: Search captured events cosmetic
- Tool “send_requests” changed its title: Create test events cosmetic
- Tool “server_status” changed its title: Inspect server status cosmetic
- Tool “unregister_webhook” changed its title: Unregister provider webhook cosmetic
- Tool “update_request” changed its title: Annotate captured event cosmetic
- Tool “wait_for_email” changed its title: Wait for email cosmetic
- Tool “wait_for_request” changed its title: Wait for a callback cosmetic
- 16 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 15 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 14 Oct 26 61
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 17 Oct 2026 · Probed https://openhook.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=openhook.dev | CN=YR2,O=Let's Encrypt,C=US | 8 Oct 2026 | 6 Jan 2027 | RSA 4096 | SHA256-RSA | 680da5fc95491697b3818eaf53d25834a0a |
| SANs: openhook.dev | ||||||
| CN=YR2,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | 4ebd24947e24d394802d84a52fd5b319 |
| CN=Root YR,O=ISRG,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | RSA 4096 | SHA256-RSA | f24b6d17f9d9ad7cb1c9fea78782699f |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of openhook.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| openhook.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| content-security-policy | default-src 'self'; script-src 'self'; style-src 'self'; img-src 'self' data:; connect-src 'self'; font-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'none' |
| x-content-type-options | nosniff |
| referrer-policy | no-referrer |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://openhook.dev/mcp | Verified | 200 | |
| http (plaintext) | http://openhook.dev/mcp | HTTPS enforced | 301 | https://openhook.dev/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
access_hosted_inbox Access hosted inbox ~47
Hosted only: issue a private inbox token for an inbox you own. Keep the returned token private.
| Name | Type | Req | Description |
|---|---|---|---|
| account_key | string | yes | – |
| inbox_id | string | yes | – |
No output schema declared.
No examples provided.
check_for_callbacks Check for new callbacks ~35
Check for callbacks newer than a sequence cursor without waiting.
| Name | Type | Req | Description |
|---|---|---|---|
| since | integer | – | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
configure_webhook Configure webhook inbox ~68
Set HTTP responses and optional SHA256 HMAC verification, preserving unspecified fields.
| Name | Type | Req | Description |
|---|---|---|---|
| cors | – | – | – |
| default_content | – | – | – |
| default_content_type | – | – | – |
| default_status | – | – | – |
| signature_provider | – | – | – |
| verification_secret | – | – | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
create_webhook Create webhook inbox ~57
Create an inbox. Save its private token; share only public capture addresses. A hosted Pro account_key creates a persistent owned inbox.
| Name | Type | Req | Description |
|---|---|---|---|
| account_key | string | – | – |
| expiry | integer | – | – |
| name | string | – | – |
No output schema declared.
No examples provided.
delete_all_requests Delete all captured events ~29
Clear stored events, keeping the inbox's addresses and settings.
| Name | Type | Req | Description |
|---|---|---|---|
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
delete_request Delete captured event ~34
Permanently delete one event belonging to this inbox.
| Name | Type | Req | Description |
|---|---|---|---|
| request_id | string | yes | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
delete_webhook Delete webhook inbox ~27
Permanently delete this inbox and its stored events.
| Name | Type | Req | Description |
|---|---|---|---|
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
download_request_file Download captured content ~40
Retrieve exact captured bytes as base64, including binary bodies or raw MIME.
| Name | Type | Req | Description |
|---|---|---|---|
| request_id | string | yes | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
export_webhook_data Export captured events ~52
Export a bounded page of full events; resume with next_since. Browser export streams the entire inbox.
| Name | Type | Req | Description |
|---|---|---|---|
| format | string | – | – |
| since | integer | – | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
extract_links_from_request Extract captured links ~35
Extract HTTP links and verification codes without visiting the URLs.
| Name | Type | Req | Description |
|---|---|---|---|
| request_id | – | – | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
generate_oob_payloads Get out-of-band callback addresses ~29
Read callback addresses for authorized out-of-band testing.
| Name | Type | Req | Description |
|---|---|---|---|
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
get_hosted_inboxes List hosted inboxes ~36
Hosted only: list your persistent inboxes and usage using a private account agent key.
| Name | Type | Req | Description |
|---|---|---|---|
| account_key | string | yes | – |
No output schema declared.
No examples provided.
get_request Read captured event ~36
Read a complete event; omit request_id to inspect the newest one.
| Name | Type | Req | Description |
|---|---|---|---|
| request_id | – | – | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
get_webhook_activity Read inbox activity ~48
Read durable receipt and mutation history with a cursor. Bodies and secrets are excluded.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | – |
| since | integer | – | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
get_webhook_email Get inbox email address ~30
Read the email address, available when this deployment runs SMTP.
| Name | Type | Req | Description |
|---|---|---|---|
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
get_webhook_info Inspect webhook inbox ~31
Read addresses, expiry, response settings, and retained event count.
| Name | Type | Req | Description |
|---|---|---|---|
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
get_webhook_requests List captured events ~55
Read events with pagination or a durable sequence cursor.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | – |
| page | integer | – | – |
| request_type | – | – | – |
| since | integer | – | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
register_github_webhook Register GitHub webhook ~57
Create a signed GitHub repository subscription and native inbox. Requires webhook-write permission.
| Name | Type | Req | Description |
|---|---|---|---|
| access_token | string | yes | – |
| account_key | string | – | – |
| events | array | yes | – |
| repository | string | yes | – |
No output schema declared.
No examples provided.
register_linear_webhook Register Linear webhook ~59
Create a signed Linear subscription and native inbox. Requires admin scope; optional team filter.
| Name | Type | Req | Description |
|---|---|---|---|
| access_token | string | yes | – |
| account_key | string | – | – |
| resource_types | array | yes | – |
| team_id | string | – | – |
No output schema declared.
No examples provided.
register_stripe_webhook Register Stripe webhook ~50
Create a signed Stripe webhook endpoint and native inbox. Provider credentials are not stored.
| Name | Type | Req | Description |
|---|---|---|---|
| access_token | string | yes | – |
| account_key | string | – | – |
| events | array | yes | – |
No output schema declared.
No examples provided.
respond_to_next_request Configure next callback response ~69
Respond to the next request using ?openhook_wait=1, within its 20-second response window.
| Name | Type | Req | Description |
|---|---|---|---|
| content | string | yes | – |
| content_type | string | – | – |
| status | integer | – | – |
| timeout_seconds | number | – | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
rotate_webhook_token Rotate inbox token ~35
Revoke the old private token and return a new one; capture addresses stay unchanged.
| Name | Type | Req | Description |
|---|---|---|---|
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
search_requests Search captured events ~56
Search captured bodies, URLs, and headers for a literal substring.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | – |
| page | integer | – | – |
| query | string | yes | – |
| request_type | – | – | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
send_requests Create test events ~36
Create up to ten marked test HTTP events in this inbox.
| Name | Type | Req | Description |
|---|---|---|---|
| payloads | array | yes | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
server_status Inspect server status ~19
Inspect native storage, retention, and enabled capture transports.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
unregister_webhook Unregister provider webhook ~39
Remove the registered provider subscription and permanently delete its native inbox and events.
| Name | Type | Req | Description |
|---|---|---|---|
| access_token | string | yes | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
update_request Annotate captured event ~42
Annotate an event without changing its original captured body.
| Name | Type | Req | Description |
|---|---|---|---|
| note | string | yes | – |
| request_id | string | yes | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
wait_for_email Wait for email ~50
Wait for an email received by Openhook's SMTP listener.
| Name | Type | Req | Description |
|---|---|---|---|
| return_existing | boolean | – | – |
| since | – | – | – |
| timeout_seconds | number | – | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
wait_for_request Wait for a callback ~62
Wait up to 120 seconds; pass next_since when reconnecting to avoid missing events.
| Name | Type | Req | Description |
|---|---|---|---|
| request_type | – | – | – |
| return_existing | boolean | – | – |
| since | – | – | – |
| timeout_seconds | number | – | – |
| webhook_token | string | yes | – |
No output schema declared.
No examples provided.
How do I install the Openhook MCP server?
Openhook is a hosted endpoint at https://openhook.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · openhook.dev
claude mcp add --transport http openhook-dev-openhook-inbox 'https://openhook.dev/mcp'
What is the Openhook MCP server?
Openhook is an MCP server listed in the public MCP registry as io.github.openhook-dev/openhook-inbox. Webhook, email and DNS inboxes for AI agents to capture callbacks and test integrations. This page covers its hosted endpoint (https://openhook.dev/mcp).
Is the Openhook MCP server safe to use?
Openhook scores 62 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Openhook MCP server expose?
Openhook exposes 29 tools: server_status, create_webhook, get_hosted_inboxes, access_hosted_inbox, configure_webhook, and 24 more. Their descriptions and schemas cost roughly 1,263 tokens of context every time the server is loaded.
Does the Openhook MCP server require authentication?
No. We connected to Openhook without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Openhook MCP server still maintained?
Openhook is still listed as active in the MCP registry. We last reached this channel on 17 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.