Appointment Booking
REMOTE · HATCHLOOP.DEV · SCANNED OCT 12
Find real businesses and book appointments. Books via Cal.com; imports 12 platforms.
Available components
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 (schedule_appointment). 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 Usability83
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1516 tokens (~108/item across 14 items; 9 tools + 5 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage85
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 55% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 9 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 11 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
How do I install the Appointment Booking MCP server?
Appointment Booking is a hosted endpoint at https://hatchloop.dev/mcp/appointment-booking, 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 · hatchloop.dev
claude mcp add --transport http dev-hatchloop-appointment-booking 'https://hatchloop.dev/mcp/appointment-booking'
{
"mcpServers": {
"dev-hatchloop-appointment-booking": {
"url": "https://hatchloop.dev/mcp/appointment-booking"
}
}
} {
"servers": {
"dev-hatchloop-appointment-booking": {
"type": "http",
"url": "https://hatchloop.dev/mcp/appointment-booking"
}
}
} [mcp_servers.dev-hatchloop-appointment-booking] url = "https://hatchloop.dev/mcp/appointment-booking"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"dev-hatchloop-appointment-booking": {
"type": "remote",
"url": "https://hatchloop.dev/mcp/appointment-booking",
"enabled": true
}
}
} openclaw mcp add dev-hatchloop-appointment-booking --url 'https://hatchloop.dev/mcp/appointment-booking' --transport streamable-http
mcp_servers:
dev-hatchloop-appointment-booking:
url: "https://hatchloop.dev/mcp/appointment-booking" {
"McpServers": {
"dev-hatchloop-appointment-booking": {
"Transport": "http",
"Url": "https://hatchloop.dev/mcp/appointment-booking"
}
}
} assistant mcp add dev-hatchloop-appointment-booking -t streamable-http -u 'https://hatchloop.dev/mcp/appointment-booking'
{
"mcpServers": {
"dev-hatchloop-appointment-booking": {
"type": "http",
"url": "https://hatchloop.dev/mcp/appointment-booking"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
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.
- 10 Oct 26 0
- Schema quality: pass → fail ▼ functional
- Server version: 0.2.15 → 0.2.16 functional
- 4 Oct 26 0
- Tool “find_business” rewrote its description, which is the text the model reads security
- Tool “import_booking_url” rewrote its description, which is the text the model reads security
- Tool “schedule_appointment” rewrote its description, which is the text the model reads security
- Tool “verify_business” rewrote its description, which is the text the model reads security
- The server no longer declares the “logging” capability functional
- MCP protocol: Implements a current MCP spec version (2026-07-28). functional
- MCP protocol version: 2025-11-25 → 2026-07-28 functional
- “find_business” reworded the description of “availability_window” cosmetic
- “find_business” reworded the description of “capability” cosmetic
- “find_business” reworded the description of “city” cosmetic
- “find_business” reworded the description of “price_band” cosmetic
- “find_business” reworded the description of “region” cosmetic
- “find_business” made “vertical” optional cosmetic
- 2 Oct 26 −2
- HSTS header: pass → fail ▼ security
- 1 Oct 26 0
- Tool “find_business” rewrote its description, which is the text the model reads security
- “find_business” reworded the description of “capability” cosmetic
- “find_business” reworded the description of “location” cosmetic
- “find_business” reworded the description of “price_band” cosmetic
- 30 Sept 26 +3
- HSTS header: fail → pass ▲ security
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 25 Sept 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
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 12 Oct 2026 · Probed https://hatchloop.dev/mcp/appointment-booking
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=hatchloop.dev | CN=YE2,O=Let's Encrypt,C=US | 9 Sept 2026 | 8 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 585b21c0597f38a72ae9ec226ee06a39406 |
| SANs: hatchloop.dev | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of hatchloop.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| hatchloop.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' 'unsafe-inline' 'unsafe-eval' data: blob: https: |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://hatchloop.dev/mcp/appointment-booking | Verified | 200 | |
| http (plaintext) | http://hatchloop.dev/mcp/appointment-booking | HTTPS enforced | 308 | https://hatchloop.dev/mcp/appointment-booking |
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 →
check_booking_link ~126
Free, instant pre-flight check for a booking URL. Classifies which booking platform a URL belongs to and tells you whether import_booking_url will accept it, WITHOUT fetching the page or spending money. Returns the platform, the exact smb_id import_booking_url would assign, the channels the booking will route through, and the inferred country. Use it to de-risk a paid booking BEFORE calling import_booking_url + schedule_appointment. [free, no key]
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | Full http(s) URL to classify, e.g. 'https://cal.com/jane' or… |
No output schema declared.
No examples provided.
find_business ~270
Find real businesses near a place, sorted by distance (nearest of those examined; see result.search). Data: OpenStreetMap (ODbL, (c) OSM contributors); phone, website, hours only when mapped. Coverage varies; community-mapped, NOT verified by us; source=openstreetmap rows cannot be booked. Answers within about 5 s: status partial (search_in_progress) means repeat the call. If OSM is down: retriable 'temporarily unavailable', never invented rows. [free, no key] [beta]
| Name | Type | Req | Description |
|---|---|---|---|
| availability_window | object | – | Accepted but NOT APPLIED: it does not narrow results (no live calendars). The… |
| capability | string | – | Kind of business: 'dentist', 'cafe', 'plumber'. Use it or vertical. |
| city | string | – | Instead of location: a city, e.g. 'Muscat, Oman'. |
| location | object | yes | City/town or ZIP, optionally with country ('Nizwa, Oman'). Geocoded by OSM. |
| max_results | integer | – | – |
| price_band | object | – | Supply-network rows only (OpenStreetMap has no prices). |
| region | string | – | With city: a state or region. |
| vertical | string | – | – |
No output schema declared.
No examples provided.
get_outcome ~33
Retrieve the final OutcomeReceipt for a completed operation. [free, no key]
| Name | Type | Req | Description |
|---|---|---|---|
| operation_id | string | yes | – |
No output schema declared.
No examples provided.
get_status ~36
Query the current state of any in-flight async operation by operation_id. [free, no key]
| Name | Type | Req | Description |
|---|---|---|---|
| operation_id | string | yes | – |
No output schema declared.
No examples provided.
import_booking_url ~296
Turn a public booking URL into a callable smb_id for send_message and capture_lead. But schedule_appointment only completes on Cal.com bound to our one connected account — the other 11 always fail schedule_appointment honestly, uncharged. Detects 12 platforms (Cal.com, Calendly, Doctolib, Booksy, Fresha, OpenTable, Setmore, Square, Acuity, Schedulista, Squarespace, BookMyCity). Idempotent — calling twice returns the same smb_id. [free, requires key] [limited]
| Name | Type | Req | Description |
|---|---|---|---|
| booking_url | string | yes | Full URL the user supplied. Must point at one of the 12 supported booking… |
| business_name | string | – | If omitted, auto-extracted from the page's <title> or og:title. |
| capabilities | array | – | Free-form capability tags (e.g., ['haircut','color','blowdry']). |
| contact_email | string | – | – |
| contact_phone | string | – | If omitted, the platform integration handles outreach. |
| country_code | string | – | ISO 3166-1 alpha-2 (e.g. 'US', 'FR'); routes compliance on later sends. |
| idempotency_key | string | – | Retry key: a 24h replay returns the original receipt, not re-run or charged. |
| vertical | string | – | If omitted, inferred from the booking platform. |
No output schema declared.
No examples provided.
preview_cost ~95
Return an expected cost estimate, latency estimate, and success-probability estimate for a proposed call before execution. Returns the exact price when it is fixed, and a min/max range when the cost depends on channel or outcome. It does not promise an accuracy percentage - check cost_range. [free, no key]
| Name | Type | Req | Description |
|---|---|---|---|
| operation | string | yes | – |
| params | object | yes | The same request body you would pass to the operation |
No output schema declared.
No examples provided.
schedule_appointment ~199
Check availability, book, or cancel via Cal.com. Only completes when the SMB's imported booking link is bound to this deployment's ONE connected Cal.com account; otherwise fails honestly (booking_destination_unmapped) with no charge. No working booking path exists yet for non-Cal.com platforms (voice AI, web form) — those SMBs fail honestly instead of a fabricated confirmation. [from $0.15/call, variable, not charged while no payment rail is on] [async→get_outcome] [limited]
| Name | Type | Req | Description |
|---|---|---|---|
| action | string | yes | – |
| customer | object | – | – |
| existing_appointment_id | string | – | Required for cancel |
| idempotency_key | string | – | Retry key: a 24h replay returns the original receipt, not re-run or charged. |
| notes | string | – | – |
| requested_time | object | – | – |
| service | string | – | – |
| smb_id | string | yes | – |
No output schema declared.
No examples provided.
self_test ~54
Service health probe: runs 6 internal checks and reports how many passed. Confirms the server is up and responding - it does NOT probe each tool individually. Use to verify connectivity before production use. [free, no key]
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
verify_business ~78
Look up what we know about a business in our supply network: contact channels, capabilities, last verification. A DIRECTORY LOOKUP - it does not contact the business. Supply-network ids only, not osm:... ids. [free, no key] [limited]
| Name | Type | Req | Description |
|---|---|---|---|
| capability_to_verify | string | – | – |
| smb_id | string | yes | – |
No output schema declared.
No examples provided.
What is the Appointment Booking MCP server?
Appointment Booking is an MCP server listed in the public MCP registry as dev.hatchloop/appointment-booking. Find real businesses and book appointments. Books via Cal.com; imports 12 platforms. This page covers its hosted endpoint (https://hatchloop.dev/mcp/appointment-booking).
Is the Appointment Booking MCP server safe to use?
Appointment Booking scores 79 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 Appointment Booking MCP server expose?
Appointment Booking exposes 9 tools: find_business, verify_business, schedule_appointment, get_status, get_outcome, and 4 more. Their descriptions and schemas cost roughly 1,187 tokens of context every time the server is loaded.
Does the Appointment Booking MCP server require authentication?
No. We connected to Appointment Booking without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Appointment Booking MCP server still maintained?
Appointment Booking is still listed as active in the MCP registry. We last reached this channel on 12 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.