# Appointment Booking (remote · hatchloop.dev)

Find real businesses and book appointments. Books via Cal.com; imports 12 platforms.

- Trust score: 75/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- remote · `hatchloop.dev`: 75/100 (this document), [markdown](https://verifymcp.io/servers/dev-hatchloop-appointment-booking/mcp-appointment-booking.md), [page](https://verifymcp.io/servers/dev-hatchloop-appointment-booking/mcp-appointment-booking)

## Channel facts

- Endpoint: `https://hatchloop.dev/mcp/appointment-booking`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.2.13`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-20.

- **Endpoint Security**: 57/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (schedule_appointment).
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 84/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 1306 tokens (~93/item across 14 items; 9 tools + 5 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 73/100
  - Stability observed for 22 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 84/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 52% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 9 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 11 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### 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.

### Claude

```bash
claude mcp add --transport http dev-hatchloop-appointment-booking 'https://hatchloop.dev/mcp/appointment-booking'
```

### Cursor

```json
{
  "mcpServers": {
    "dev-hatchloop-appointment-booking": {
      "url": "https://hatchloop.dev/mcp/appointment-booking"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "dev-hatchloop-appointment-booking": {
      "type": "http",
      "url": "https://hatchloop.dev/mcp/appointment-booking"
    }
  }
}
```

### Codex

```toml
[mcp_servers.dev-hatchloop-appointment-booking]
url = "https://hatchloop.dev/mcp/appointment-booking"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dev-hatchloop-appointment-booking": {
      "type": "remote",
      "url": "https://hatchloop.dev/mcp/appointment-booking",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add dev-hatchloop-appointment-booking --url 'https://hatchloop.dev/mcp/appointment-booking' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  dev-hatchloop-appointment-booking:
    url: "https://hatchloop.dev/mcp/appointment-booking"
```

### Netclaw

```json
{
  "McpServers": {
    "dev-hatchloop-appointment-booking": {
      "Transport": "http",
      "Url": "https://hatchloop.dev/mcp/appointment-booking"
    }
  }
}
```

### Vellum

```bash
assistant mcp add dev-hatchloop-appointment-booking -t streamable-http -u 'https://hatchloop.dev/mcp/appointment-booking'
```

### Other

```json
{
  "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.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-20 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-18 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-15 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-13 (score 72, +1)

No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-11 (score 71, +3)

- [security] Tool “check_booking_link” rewrote its description, which is the text the model reads
- [security] Tool “find_business” rewrote its description, which is the text the model reads
- [security] Tool “get_outcome” rewrote its description, which is the text the model reads
- [security] Tool “get_status” 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 “preview_cost” 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 “self_test” rewrote its description, which is the text the model reads
- [security] Tool “verify_business” rewrote its description, which is the text the model reads
- [functional improvement] Schema quality: fail → pass
- [cosmetic] “check_booking_link” reworded the description of “url”
- [cosmetic] “find_business” reworded the description of “availability_window”
- [cosmetic] “find_business” reworded the description of “capability”
- [cosmetic] “import_booking_url” reworded the description of “booking_url”
- [cosmetic] “import_booking_url” reworded the description of “business_name”
- [cosmetic] “import_booking_url” reworded the description of “country_code”
- [cosmetic] “import_booking_url” reworded the description of “vertical”

### 2026-09-10 (score 68, −2)

- [security regression] HSTS header: pass → fail

### 2026-09-08 (score 70, +4)

- [functional improvement] MCP protocol: fail → pass
- [functional] MCP protocol version: 2024-11-05 → 2025-11-25

### 2026-09-06 (score 66, +1)

- [functional] Server version: 0.2.12 → 0.2.13

## MCP tools (9)

### `find_business` (~157 tokens)

Given criteria (vertical, location, capability, price band, availability window), return ranked candidate businesses from our supply network. THE NETWORK IS SMALL AND STILL MOSTLY SAMPLE DATA: entries that are not real are named [DEMO] and flagged is_demo - check that field before acting on a result. [free, no key]

Input parameters:

- `availability_window` (object): Accepted but NOT APPLIED - it does not narrow results. We do not hold live…
- `capability` (string): Specific service capability required, e.g. 'haircut', 'plumbing',…
- `location` (object, required)
- `max_results` (integer)
- `price_band` (object)
- `vertical` (string, required): Service vertical to search within

### `verify_business` (~72 tokens)

Look up what we know about a business in our supply network: its contact channels, capabilities, and when the record was last verified. This is a DIRECTORY LOOKUP - it does not contact the business. [free, no key]

Input parameters:

- `capability_to_verify` (string)
- `smb_id` (string, required)

### `schedule_appointment` (~172 tokens)

Availability lookup, hold, confirm, reschedule, or cancel appointments with an SMB. Routes through the SMB's native booking system if available, falls back to voice AI or web form. [from $0.15/call, variable] [async→get_outcome]

Input parameters:

- `action` (string, required)
- `customer` (object)
- `existing_appointment_id` (string): Required for reschedule/cancel
- `idempotency_key` (string): Optional client-supplied key for safe retries. Replaying the same key within 24h returns the original receipt - the operation is NOT re-executed and NOT re-charged.
- `notes` (string)
- `requested_time` (object)
- `service` (string)
- `smb_id` (string, required)

### `get_status` (~36 tokens)

Query the current state of any in-flight async operation by operation_id. [free, no key]

Input parameters:

- `operation_id` (string, required)

### `get_outcome` (~33 tokens)

Retrieve the final OutcomeReceipt for a completed operation. [free, no key]

Input parameters:

- `operation_id` (string, required)

### `preview_cost` (~95 tokens)

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]

Input parameters:

- `operation` (string, required)
- `params` (object, required): The same request body you would pass to the operation

### `self_test` (~54 tokens)

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]

### `check_booking_link` (~126 tokens)

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]

Input parameters:

- `url` (string, required): Full http(s) URL to classify, e.g. 'https://cal.com/jane' or…

### `import_booking_url` (~303 tokens)

Turn ANY public booking URL (Cal.com, Calendly, Doctolib, Booksy, Fresha, OpenTable, Setmore, Square, Acuity, Schedulista, Squarespace, BookMyCity) into a callable smb_id you can immediately use with schedule_appointment, send_message, or capture_lead. Idempotent — calling twice returns the same smb_id. [free, requires key]

Input parameters:

- `booking_url` (string, required): Full URL the user supplied. Must point at one of the 12 supported booking…
- `business_name` (string): Optional override. If omitted, the business name is auto-extracted from the…
- `capabilities` (array): Free-form capability tags (e.g., ['haircut','color','blowdry']).
- `contact_email` (string): Optional.
- `contact_phone` (string): Optional. If omitted, the platform integration handles outreach.
- `country_code` (string): ISO 3166-1 alpha-2 (e.g. 'US', 'FR'). Used for compliance routing on later…
- `idempotency_key` (string): Optional client-supplied key for safe retries. Replaying the same key within 24h returns the original receipt - the operation is NOT re-executed and NOT re-charged.
- `vertical` (string): Best-guess vertical. If omitted, inferred from the platform (e.g., Doctolib ->…

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/dev-hatchloop-appointment-booking/mcp-appointment-booking#diagnostics

## Score history

- 2026-09-20: 75
- 2026-09-19: 74
- 2026-09-18: 74
- 2026-09-17: 73
- 2026-09-16: 73
- 2026-09-15: 73
- 2026-09-14: 72
- 2026-09-13: 72
- 2026-09-12: 71
- 2026-09-11: 71
- 2026-09-10: 68
- 2026-09-09: 70
- 2026-09-08: 70
- 2026-09-07: 66
- 2026-09-06: 66
- 2026-09-05: 65
- 2026-09-04: 65
- 2026-09-03: 64
- 2026-09-02: 64
- 2026-09-01: 63
- 2026-08-31: 63
- 2026-08-30: 62
- 2026-08-29: 63

## Common questions

### 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 75 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 1,048 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 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://hatchloop.dev/mcp/appointment-booking
- Repository: https://github.com/basilalshukaili/agentbroker
- Website: https://hatchloop.dev/agent-broker/
- Changelog RSS feed: https://verifymcp.io/servers/dev-hatchloop-appointment-booking/mcp-appointment-booking.xml
- Changelog JSON feed: https://verifymcp.io/servers/dev-hatchloop-appointment-booking/mcp-appointment-booking.json
- HTML version of this page: https://verifymcp.io/servers/dev-hatchloop-appointment-booking/mcp-appointment-booking