# io.github.SolvoHQ/openworkdays (remote · openworkdays.vercel.app)

Zero-signup business-day date-math API: add days, count days between dates, is-business-day.

- Trust score: 76/100 (medium)
- Change this week: +7
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `openworkdays.vercel.app`: 76/100 (this document), [markdown](https://verifymcp.io/servers/solvohq-openworkdays/api-mcp.md), [page](https://verifymcp.io/servers/solvohq-openworkdays/api-mcp)

## Channel facts

- Endpoint: `https://openworkdays.vercel.app/api/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.1.0`

## 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 2026-08-03.

- **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**: 75/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 218 tokens (~218/item across 1 items; 1 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 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.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http solvohq-openworkdays https://openworkdays.vercel.app/api/mcp
```

### Codex

```toml
[mcp_servers.solvohq-openworkdays]
url = "https://openworkdays.vercel.app/api/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "solvohq-openworkdays": {
      "type": "remote",
      "url": "https://openworkdays.vercel.app/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add solvohq-openworkdays --url https://openworkdays.vercel.app/api/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  solvohq-openworkdays:
    url: "https://openworkdays.vercel.app/api/mcp"
```

### Other

```json
{
  "mcpServers": {
    "solvohq-openworkdays": {
      "type": "http",
      "url": "https://openworkdays.vercel.app/api/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.

### 2026-08-03 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 75, +4)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 71, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-28 (score 70, +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.

### 2026-07-27 (score 69, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 69)

First indexed and scored.

## MCP tools (1)

### `businessdays` (~218 tokens)

Business-day date math. Three modes inferred from params: add (start+days -> the date N business days away, negative days = before), diff (start+end -> count of business days between, inclusive of both endpoints), is (date -> is it a business day). Optional weekend (default sat,sun) and holidays (comma list of YYYY-MM-DD you supply). No signup, no API key. Pure UTC date-only math; no time-of-day/DST/timezone.

Input parameters:

- `date` (string): Date YYYY-MM-DD to test (is mode)
- `days` (integer): Business days to add (add mode); negative subtracts
- `end` (string): End date YYYY-MM-DD (diff mode)
- `holidays` (string): Comma list of YYYY-MM-DD dates treated as non-working
- `start` (string): Start date YYYY-MM-DD (add & diff modes)
- `weekend` (string): Comma list of weekend days, e.g. "sat,sun" (default sat,sun)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/solvohq-openworkdays/api-mcp#diagnostics

## Score history

- 2026-08-03: 76
- 2026-08-02: 75
- 2026-08-01: 75
- 2026-07-31: 75
- 2026-07-30: 71
- 2026-07-29: 71
- 2026-07-28: 70
- 2026-07-27: 69
- 2026-07-26: 69

## Links

- Remote endpoint: https://openworkdays.vercel.app/api/mcp
- Repository: https://github.com/SolvoHQ/openworkdays
- Changelog RSS feed: https://verifymcp.io/servers/solvohq-openworkdays/api-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/solvohq-openworkdays/api-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/solvohq-openworkdays/api-mcp