# SigmaJunction (remote · sigmajunction.com)

Software engineering firm in Serbia: services, engagement models, articles - and send an inquiry.

- Trust score: 88/100 (high trust)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `sigmajunction.com`: 88/100 (this document), [markdown](https://verifymcp.io/servers/com-sigmajunction-site/sigmajunction.md), [page](https://verifymcp.io/servers/com-sigmajunction-site/sigmajunction)

## Channel facts

- Endpoint: `https://sigmajunction.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## 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 2026-11-05.

- **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**: 83/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 621 tokens (~88/item across 7 items; 7 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 90/100
  - Stability observed for 27 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.
  - All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.
  - An AI judge read all 8 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 SigmaJunction MCP server?

SigmaJunction is a hosted endpoint at https://sigmajunction.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-sigmajunction-site 'https://sigmajunction.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-sigmajunction-site": {
      "url": "https://sigmajunction.com/mcp"
    }
  }
}
```

### VS Code

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

### Codex

```toml
[mcp_servers.com-sigmajunction-site]
url = "https://sigmajunction.com/mcp"
```

### opencode

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

### OpenClaw

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

### Hermes

```yaml
mcp_servers:
  com-sigmajunction-site:
    url: "https://sigmajunction.com/mcp"
```

### Netclaw

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

### Vellum

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

### Other

```json
{
  "mcpServers": {
    "com-sigmajunction-site": {
      "type": "http",
      "url": "https://sigmajunction.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.

### 2026-11-05 (score 88, +1)

No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 87, +1)

No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-01 (score 86, +1)

No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-30 (score 85, +1)

No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-28 (score 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-26 (score 83, +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.

### 2026-10-23 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-21 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (7)

### `get_company_profile` (~31 tokens)

Company profile

Who SigmaJunction is: practices, engagement models, how engagements start, markets, languages and contact details.

Output parameters:

- `markdown` (string): The answer as Markdown

### `list_services` (~53 tokens)

Services

SigmaJunction's three practices and their capabilities, with links to each service page.

Input parameters:

- `locale` (string): Language of the returned links and texts: en (default), de, sr, fr, es or it.

Output parameters:

- `caseStudiesUrl` (string)
- `services` (array)

### `get_engagement_models` (~70 tokens)

Engagement models and pricing

How working with SigmaJunction is priced: dedicated team, per project with milestone billing, or an equity partnership; plus the cost guide and the free diagnosis.

Input parameters:

- `locale` (string): Language of the returned links and texts: en (default), de, sr, fr, es or it.

Output parameters:

- `bookingUrl` (string)
- `costGuideUrl` (string)
- `freeDiagnosisUrl` (string)
- `models` (array)

### `read_page` (~63 tokens)

Read a page

Any page of sigmajunction.com as Markdown, by path ("/pricing", "/de/work") or by full URL on sigmajunction.com.

Input parameters:

- `path` (string, required): Site path such as /pricing or /de/work, or a full https://sigmajunction.com URL

Output parameters:

- `markdown` (string): Page content as Markdown
- `url` (string): Canonical URL of the page

### `list_articles` (~87 tokens)

Articles

SigmaJunction's articles (title, summary, date, link), newest first, optionally filtered by a search term.

Input parameters:

- `locale` (string): Language of the returned links and texts: en (default), de, sr, fr, es or it.
- `query` (string): Words to look for in titles, summaries and categories, e.g. "partner" or "Rust"

Output parameters:

- `articles` (array)

### `send_inquiry` (~141 tokens)

Send an inquiry

Send a project inquiry to SigmaJunction on the user's behalf. Only use when the user has asked to contact SigmaJunction, and confirm the name, email and message with them first. A partner replies by email within one business day.

Input parameters:

- `company` (string): The user's company, if they gave one
- `email` (string, required): Where SigmaJunction should reply
- `message` (string, required): What the user wants to build or solve, in their own words
- `name` (string, required): The user's full name
- `topic` (string): Area of interest, e.g. Custom software, AI, Automation, Dedicated team, Partnership

Output parameters:

- `message` (string): What happens next, or why it failed
- `sent` (boolean): Whether the request was accepted

### `request_partner_checklist` (~114 tokens)

Email the partner checklist

Email the user SigmaJunction's two-page checklist for choosing a software development partner (PDF). Only use when the user asked for it and gave their email address. Newsletter sign-up only if the user explicitly wants it.

Input parameters:

- `email` (string, required): Where to send the download link
- `locale` (string): Language of the returned links and texts: en (default), de, sr, fr, es or it.
- `newsletter` (boolean): Also subscribe the user to the newsletter - only if they asked

Output parameters:

- `message` (string): What happens next, or why it failed
- `sent` (boolean): Whether the request was accepted

## Diagnostics

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

## Score history

- 2026-11-05: 88
- 2026-11-04: 87
- 2026-11-03: 87
- 2026-11-02: 86
- 2026-11-01: 86
- 2026-10-31: 85
- 2026-10-30: 85
- 2026-10-29: 84
- 2026-10-28: 84
- 2026-10-27: 83
- 2026-10-26: 83
- 2026-10-25: 82
- 2026-10-24: 82
- 2026-10-23: 82
- 2026-10-22: 81
- 2026-10-21: 81
- 2026-10-20: 80
- 2026-10-19: 80
- 2026-10-18: 79
- 2026-10-17: 79
- 2026-10-16: 78
- 2026-10-15: 78
- 2026-10-14: 77
- 2026-10-13: 77
- 2026-10-12: 76
- 2026-10-10: 75
- 2026-10-09: 75

## Common questions

### What is the SigmaJunction MCP server?

SigmaJunction is an MCP server listed in the public MCP registry as com.sigmajunction/site. Software engineering firm in Serbia: services, engagement models, articles - and send an inquiry. This page covers its hosted endpoint (https://sigmajunction.com/mcp).

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

SigmaJunction scores 88 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 SigmaJunction MCP server expose?

SigmaJunction exposes 7 tools: get_company_profile, list_services, get_engagement_models, read_page, list_articles, and 2 more. Their descriptions and schemas cost roughly 559 tokens of context every time the server is loaded.

### Does the SigmaJunction MCP server require authentication?

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

### Is the SigmaJunction MCP server still maintained?

SigmaJunction is still listed as active in the MCP registry. We last reached this channel on 5 November 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://sigmajunction.com/mcp
- Website: https://sigmajunction.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-sigmajunction-site/sigmajunction.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-sigmajunction-site/sigmajunction.json
- HTML version of this page: https://verifymcp.io/servers/com-sigmajunction-site/sigmajunction