# Omnicost (remote · omnicost.com)

Construction unit prices with source and date for Spain, the US and the EU. OAuth or API key.

- Trust score: 39/100 (low)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `omnicost.com`: 39/100 (this document), [markdown](https://verifymcp.io/servers/com-omnicost-catalog/api-mcp.md), [page](https://verifymcp.io/servers/com-omnicost-catalog/api-mcp)

## Channel facts

- Endpoint: `https://omnicost.com/api/mcp`
- Transports: `streamable-http`
- Auth: `required`
- 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**: 97/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - The endpoint enforces authorisation, advertised via RFC 9728 protected-resource metadata.
  - 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.
  - The authorisation server supports Client ID Metadata Documents, the current MCP client-registration mechanism.
- **Transport & Reachability**: 0/100
  - Transport blocked by authentication: the endpoint requires auth we don't have to verify streamable-http.
- **Schema Quality & AI Usability**: 0/100
  - Schema blocked by authentication: the endpoint requires auth we don't have to read it.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 0/100
  - Tool coverage blocked by authentication: the endpoint requires auth we don't have to read its tools.
- **Tool Safety**: 0/100
  - Tool safety blocked by authentication: the endpoint requires auth we don't have to read its tools.
- **Capabilities**: 0/100
  - Capabilities blocked by authentication: the endpoint requires auth we don't have to read them.

**Unverified: 6 categories.** Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

## Install

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

Omnicost is a hosted endpoint at https://omnicost.com/api/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-omnicost-catalog 'https://omnicost.com/api/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-omnicost-catalog": {
      "url": "https://omnicost.com/api/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-omnicost-catalog": {
      "type": "http",
      "url": "https://omnicost.com/api/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-omnicost-catalog]
url = "https://omnicost.com/api/mcp"
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add com-omnicost-catalog --url 'https://omnicost.com/api/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-omnicost-catalog:
    url: "https://omnicost.com/api/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-omnicost-catalog": {
      "Transport": "http",
      "Url": "https://omnicost.com/api/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-omnicost-catalog -t streamable-http -u 'https://omnicost.com/api/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-omnicost-catalog": {
      "type": "http",
      "url": "https://omnicost.com/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.

### 2026-11-04 (score 39, −33)

- [security regression] Endpoint reachability: reachable → behind authorisation
- [security regression] Tool safety: pass → unverified
- [security regression] Stability: 0.07 → unverified
- [security regression] Transport: pass → unverified
- [security improvement] Authorization: partial → pass
- [security] First check of Authorization: pass
- [functional regression] Capabilities: fail → unverified
- [functional regression] Tool coverage: 100 → unverified

### 2026-11-03 (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.

### 2026-11-02 (score 71, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-11-01 (score 71, +35)

- [security improvement] Transport: unverified → pass
- [security improvement] Injection markers: unverified → pass
- [security improvement] Authorization: fail → partial
- [security] First check of Judged manipulation: pass
- [functional regression] MCP protocol: unverified → fail
- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Schema quality: fail
- [functional] First check of Destructive annotations: pass
- [functional] First check of Schema quality: pass
- [functional] First check of Schema quality: good
- [functional] First check of Tool coverage: 80

### 2026-10-29 (score 36)

First indexed and scored.

## MCP tools (4)

### `search_catalog` (~97 tokens)

Search construction cost catalog

Semantic search for canonical construction-cost items. Returns top-K matches with median price, vendor count, and source trust. Deprecated in structuredContent.results (kept for one release): score, category_id.

Input parameters:

- `limit` (integer)
- `q` (string, required): Free-text query (e.g. 'concrete HA-25 m³')
- `region` (string): Restrict to canonicals with at least one vendor in this region

### `get_item` (~54 tokens)

Get catalog item

Fetch a canonical item with vendor breakdown and recent price history. Returns Markdown for readability. Deprecated in structuredContent (kept for one release): item.category_id.

Input parameters:

- `id` (string, required): Canonical id (ci_xxx)

### `list_categories` (~48 tokens)

List catalog categories

Catalog categories: structuredContent.categories items are {id, name, parentId, parent} where parent is the parent category's name. Deprecated (kept for one release): id, parentId.

### `get_decomposition` (~117 tokens)

Get item cost breakdown

BC3 recipe tree for an item: material+labor+machinery components per unit. Returns parent_code and component rows {child_code, factor, yield, per_unit, name, unit, unit_price, item_id}; item_id (vsku_…) can be passed back to get_decomposition. Deprecated (kept for one release): parentId, parentCode, and per component catalog_item_id and position.

Input parameters:

- `item_id` (string, required): Canonical id or vendor SKU id (ci_xxx / vsku_xxx)

## Diagnostics

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

## Score history

- 2026-11-05: 39
- 2026-11-04: 39
- 2026-11-03: 72
- 2026-11-02: 71
- 2026-11-01: 71
- 2026-10-31: 36
- 2026-10-30: 36
- 2026-10-29: 36

## Common questions

### What is the Omnicost MCP server?

Omnicost is an MCP server listed in the public MCP registry as com.omnicost/catalog. Construction unit prices with source and date for Spain, the US and the EU. OAuth or API key. This page covers its hosted endpoint (https://omnicost.com/api/mcp).

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

Omnicost scores 39 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 Omnicost MCP server expose?

Omnicost exposes 4 tools: search_catalog, get_item, list_categories, get_decomposition. Their descriptions and schemas cost roughly 316 tokens of context every time the server is loaded.

### Does the Omnicost MCP server require authentication?

Yes. Omnicost asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.

### Is the Omnicost MCP server still maintained?

Omnicost 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.

### What did VerifyMCP test on the Omnicost MCP server?

VerifyMCP ran 5 checks on Omnicost, covering TLS certificate, Authorization, HTTPS, HSTS header and 1 more. 6 items could not be completed, a gap on our side rather than a finding about Omnicost: Transport, Schema quality, Stability, Tool coverage and 2 more. 6 categories score 0 for that reason, because we only credit what we can confirm. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- Remote endpoint: https://omnicost.com/api/mcp
- Repository: https://github.com/sinequix/omnicost-mcp
- Website: https://omnicost.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-omnicost-catalog/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-omnicost-catalog/api-mcp/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/com-omnicost-catalog/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-omnicost-catalog/api-mcp