# Bizday (remote · isitabizday.com)

Cited US federal and Reserve Bank business days for agents.

- Trust score: 72/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-22

## Components

- remote · `isitabizday.com`: 72/100 (this document), [markdown](https://verifymcp.io/servers/com-isitabizday-bizday/isitabizday.md), [page](https://verifymcp.io/servers/com-isitabizday-bizday/isitabizday)

## Channel facts

- Endpoint: `https://isitabizday.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.3.23`

## 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 2026-10-22.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - 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**: 60/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 2614 tokens (~326/item across 8 items; 8 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 10/100
  - Stability observed for 3 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 8 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Bizday MCP server?

Bizday is a hosted endpoint at https://isitabizday.com/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.

### Claude

```bash
claude mcp add --transport http com-isitabizday-bizday 'https://isitabizday.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-isitabizday-bizday": {
      "url": "https://isitabizday.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-isitabizday-bizday": {
      "type": "http",
      "url": "https://isitabizday.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-isitabizday-bizday]
url = "https://isitabizday.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-isitabizday-bizday": {
      "type": "remote",
      "url": "https://isitabizday.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-isitabizday-bizday --url 'https://isitabizday.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-isitabizday-bizday:
    url: "https://isitabizday.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-isitabizday-bizday": {
      "Transport": "http",
      "Url": "https://isitabizday.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-isitabizday-bizday -t streamable-http -u 'https://isitabizday.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-isitabizday-bizday": {
      "type": "http",
      "url": "https://isitabizday.com/mcp"
    }
  }
}
```

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.

### 2026-10-21 (score 72, +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.

### 2026-10-20 (score 71, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-19 (score 71)

First indexed and scored.

## MCP tools (8)

### `list_calendars` (~146 tokens)

List calendars

Shipped calendars: id, name, source URL, Saturday and Sunday rules, coverage, last verified, and changelog. us-federal-opm is the default. us-nyse covers 2026-01-01 through 2028-12-31. us-sifma covers 2026-01-01 through 2027-12-31. us-ca covers 2026-01-01 through 2026-12-31. us-ny covers 2026-01-01 through 2027-12-31. us-nyc covers 2026-01-01 through 2027-12-31.

Output parameters:

- `calendars`: calendars
- `default`: default

### `list_holidays` (~372 tokens)

List holidays

Holiday rows for one year. us-federal-opm and us-fed-banking return the eleven nationwide legal public holidays. On us-fed-banking, observed is null when the legal date is a Saturday, because Friday stays open. us-nyse returns the NYSE full-day table and accepts only 2026 through 2028. us-sifma returns the SIFMA U.S. full-close table and accepts only 2026 and 2027. us-ca returns the California state-office table and accepts only 2026. us-ny returns the New York State office table and accepts only 2026 and 2027. us-nyc returns the New York City office table and accepts only 2026 and 2027. A Saturday holiday closes Friday. year is 2021 through 2100 on the federal calendars. Years after 2030 use the same rules and are not a later official table.

Input parameters:

- `calendar` (string): Calendar id. Omit for us-federal-opm. Unknown ids are an error. us-fed-banking keeps Reserve Banks open on the Friday before a Saturday holiday. us-nyse is NYSE full-day holidays for 2026 through 202…
- `year` (integer, required): Calendar year, 2021 through 2100.

Output parameters:

- `calendar`: calendar
- `count`: count
- `disclaimer`: disclaimer
- `holidays`: holidays
- `sources`: sources
- `year`: year

### `is_business_day` (~406 tokens)

Is business day

Whether a civil date is a business day, and why. Omit calendar for us-federal-opm (US federal offices). us-fed-banking is the Federal Reserve Banks schedule: a Saturday holiday does not close the preceding Friday. us-nyse is NYSE full-day holidays for 2026 through 2028. us-sifma is SIFMA recommended U.S. fixed-income full closes for 2026 and 2027. An early close stays open. us-ca is California state offices for 2026. Farmworkers Day is closed. Friday, July 3, 2026 stays open. us-ny is New York State executive-branch offices for 2026 and 2027. Friday, July 3, 2026 stays open. Election Day 2026 stays open. us-nyc is New York City offices for 2026 and 2027. Friday, July 3, 2026 is closed. Election Day 2026 is closed. The result includes calendar, sources, and disclaimer. Not legal, payroll, or financial advice.

Input parameters:

- `calendar` (string): Calendar id. Omit for us-federal-opm. Unknown ids are an error. us-fed-banking keeps Reserve Banks open on the Friday before a Saturday holiday. us-nyse is NYSE full-day holidays for 2026 through 202…
- `date` (string, required): Civil date, YYYY-MM-DD. Not a timestamp.

Output parameters:

- `business_day`: business_day
- `calendar`: calendar
- `date`: date
- `disclaimer`: disclaimer
- `sources`: sources

### `add_business_days` (~276 tokens)

Add business days

The date that is days business days after start. The start date is day 0, matching Excel WORKDAY, so days=1 always leaves the start date. days is an integer from -3660 to 3660. Omit calendar for us-federal-opm. us-fed-banking keeps Reserve Banks open on the Friday before a Saturday holiday.

Input parameters:

- `calendar` (string): Calendar id. Omit for us-federal-opm. Unknown ids are an error. us-fed-banking keeps Reserve Banks open on the Friday before a Saturday holiday. us-nyse is NYSE full-day holidays for 2026 through 202…
- `days` (integer, required): Business days to add. Negative counts backward. Zero returns the start date.
- `start` (string, required): Civil date, YYYY-MM-DD. Not a timestamp.

Output parameters:

- `calendar`: calendar
- `date`: date
- `days`: days
- `disclaimer`: disclaimer
- `sources`: sources
- `start`: start

### `count_business_days` (~247 tokens)

Count business days

How many business days are in the inclusive span from start through end, matching Excel NETWORKDAYS. Negative when end is earlier. The span must be 3660 days or less. Omit calendar for us-federal-opm.

Input parameters:

- `calendar` (string): Calendar id. Omit for us-federal-opm. Unknown ids are an error. us-fed-banking keeps Reserve Banks open on the Friday before a Saturday holiday. us-nyse is NYSE full-day holidays for 2026 through 202…
- `end` (string, required): Civil date, YYYY-MM-DD. Not a timestamp.
- `start` (string, required): Civil date, YYYY-MM-DD. Not a timestamp.

Output parameters:

- `business_days`: business_days
- `calendar`: calendar
- `disclaimer`: disclaimer
- `end`: end
- `sources`: sources
- `start`: start

### `roll_date` (~248 tokens)

Roll to a business day

Stay on date when it is already a business day. Otherwise move to the nearest business day in direction next or previous. This is not Excel WORKDAY, and it does not decide whether a filing is timely. Omit calendar for us-federal-opm.

Input parameters:

- `calendar` (string): Calendar id. Omit for us-federal-opm. Unknown ids are an error. us-fed-banking keeps Reserve Banks open on the Friday before a Saturday holiday. us-nyse is NYSE full-day holidays for 2026 through 202…
- `date` (string, required): Civil date, YYYY-MM-DD. Not a timestamp.
- `direction` (string, required): next walks forward. previous walks backward.

Output parameters:

- `calendar`: calendar
- `date`: date
- `direction`: direction
- `disclaimer`: disclaimer
- `reason`: reason
- `result`: result
- `rolled`: rolled
- `sources`: sources

### `frcp_6a_deadline` (~217 tokens)

FRCP 6(a) deadline

Count a period stated in days under Fed. R. Civ. P. 6(a)(1). Exclude the trigger day. Count every calendar day, including intermediate Saturdays, Sundays, and legal holidays. Roll only the last day. direction is after or before. days is an integer from 1 to 3660. There is no calendar argument. Legal holidays are the Rule 6(a)(6)(A) days on the federal-office observed weekday, including Juneteenth. This is not Excel WORKDAY. It does not apply state holidays, one-off holidays, clerk inaccessibility, Good Friday, or Inauguration Day, and it does not decide whether a filing is timely.

Input parameters:

- `days` (integer, required): Days to count. Integer from 1 to 3660. Zero and negative values are rejected.
- `direction` (string, required): after counts forward. before counts backward. next and previous are rejected.
- `trigger` (string, required): Civil date, YYYY-MM-DD. Not a timestamp.

Output parameters:

- `counted_date`: counted_date
- `days`: days
- `deadline`: deadline
- `direction`: direction
- `disclaimer`: disclaimer
- `rolled`: rolled
- `rule`: rule
- `skipped`: skipped
- `sources`: sources
- `trigger`: trigger

### `report_discrepancy` (~171 tokens)

Report a discrepancy

Store a suspected wrong closing for later review. Requires calendar, date, claim, and source_url. The report is not applied to either calendar. The result is accepted true and applied false. claim is one line of at most 500 characters. source_url is an http or https URL with no username or password. Do not send a name or an email. This is not a calculation.

Input parameters:

- `calendar` (string, required): Calendar id. Required. Unknown ids are an error.
- `claim` (string, required): One line, at most 500 characters. Do not include a name or an email address.
- `date` (string, required): Civil date, YYYY-MM-DD. Not a timestamp.
- `source_url` (string, required): http or https URL for the source that was checked. No username or password.

Output parameters:

- `accepted`: accepted
- `applied`: applied

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-isitabizday-bizday/isitabizday#diagnostics

## Score history

- 2026-10-22: 72
- 2026-10-21: 72
- 2026-10-20: 71
- 2026-10-19: 71

## Common questions

### What is the Bizday MCP server?

Bizday is an MCP server listed in the public MCP registry as com.isitabizday/bizday. Cited US federal and Reserve Bank business days for agents. This page covers its hosted endpoint (https://isitabizday.com/mcp).

### Is the Bizday MCP server safe to use?

Bizday scores 72 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 Bizday MCP server expose?

Bizday exposes 8 tools: list_calendars, list_holidays, is_business_day, add_business_days, count_business_days, and 3 more. Their descriptions and schemas cost roughly 2,083 tokens of context every time the server is loaded.

### Does the Bizday MCP server require authentication?

No. We connected to Bizday without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Bizday MCP server still maintained?

Bizday is still listed as active in the MCP registry. We last reached this channel on 22 October 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://isitabizday.com/mcp
- Website: https://isitabizday.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-isitabizday-bizday/isitabizday.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-isitabizday-bizday/isitabizday.json
- HTML version of this page: https://verifymcp.io/servers/com-isitabizday-bizday/isitabizday