# Open Corporates (npm · @pipeworx/mcp-open-corporates)

OpenCorporates MCP — Global company registry data (BYO key)

- Trust score: 84/100 (high trust)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `gateway.pipeworx.io`: 63/100, [markdown](https://verifymcp.io/servers/pipeworx-io-open-corporates/open-corporates-mcp.md), [page](https://verifymcp.io/servers/pipeworx-io-open-corporates/open-corporates-mcp)
- npm · `@pipeworx/mcp-open-corporates`: 84/100 (this document), [markdown](https://verifymcp.io/servers/pipeworx-io-open-corporates/pipeworx-mcp-open-corporates.md), [page](https://verifymcp.io/servers/pipeworx-io-open-corporates/pipeworx-mcp-open-corporates)

## Channel facts

- Registry: `npm`
- Package: `@pipeworx/mcp-open-corporates`
- Version: `0.2.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, 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.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to pipeworx-io/mcp-open-corporates).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 1 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 72/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 522 tokens (~174/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 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.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 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 Open Corporates MCP server?

Open Corporates runs locally as an npm package, launched with npx -y @pipeworx/mcp-open-corporates. 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 pipeworx-io-open-corporates -- npx -y @pipeworx/mcp-open-corporates
```

### Cursor

```json
{
  "mcpServers": {
    "pipeworx-io-open-corporates": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-open-corporates"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "pipeworx-io-open-corporates": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-open-corporates"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add pipeworx-io-open-corporates -- npx -y @pipeworx/mcp-open-corporates
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "pipeworx-io-open-corporates": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@pipeworx/mcp-open-corporates"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add pipeworx-io-open-corporates --command npx --arg -y --arg @pipeworx/mcp-open-corporates
```

### Hermes

```yaml
mcp_servers:
  pipeworx-io-open-corporates:
    command: "npx"
    args: ["-y", "@pipeworx/mcp-open-corporates"]
```

### Netclaw

```json
{
  "McpServers": {
    "pipeworx-io-open-corporates": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@pipeworx/mcp-open-corporates"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add pipeworx-io-open-corporates -t stdio -c npx -a -y @pipeworx/mcp-open-corporates
```

### Other

```json
{
  "mcpServers": {
    "pipeworx-io-open-corporates": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-open-corporates"
      ]
    }
  }
}
```

## 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 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-04 (score 83, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-11-03 (score 68, −14)

- [security regression] Malware scan: pass → unverified
- [functional] Package version: 0.2.0 → 0.2.1

### 2026-11-01 (score 82, +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.

### 2026-10-30 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 0 to 3. That category is still filling its 30-day observation window: 0 days of observed history at the previous scan, 1 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 80)

First indexed and scored.

## MCP tools (3)

### `search_companies` (~176 tokens)

Search global company registries by name across 140+ jurisdictions. Returns company name, jurisdiction, status, type, incorporation date, and registered address. REQUIRES your own OpenCorporates API token via _apiKey — their public API is closed and keyless calls return 401. For keyless global company lookup use gleif search_lei instead. Example: search_companies({query:"Tesla", country:"us", _apiKey:"..."})

Input parameters:

- `_apiKey` (string): Your OpenCorporates API token (required — get one at https://opencorporates.com/api_accounts/new)
- `country` (string): ISO 2-letter country code (e.g., "us", "gb", "de")
- `query` (string, required): Company name to search (e.g., "Acme Corp")

### `get_company` (~163 tokens)

Get full details for a specific company by jurisdiction and company number. Returns registration details, officers, filings, and industry codes. REQUIRES your own OpenCorporates API token via _apiKey — their public API is closed and keyless calls return 401. Example: get_company({jurisdiction:"us_de", number:"4483789", _apiKey:"..."}) for a Delaware company.

Input parameters:

- `_apiKey` (string): Your OpenCorporates API token (required — get one at https://opencorporates.com/api_accounts/new)
- `jurisdiction` (string, required): Jurisdiction code (e.g., "us_de" for Delaware, "gb" for UK, "ca_on" for Ontario)
- `number` (string, required): Company registration number

### `search_officers` (~127 tokens)

Search company officers and directors by name. Returns officer name, position, company, start/end dates, and nationality. REQUIRES your own OpenCorporates API token via _apiKey — their public API is closed and keyless calls return 401. Example: search_officers({query:"Elon Musk", _apiKey:"..."})

Input parameters:

- `_apiKey` (string): Your OpenCorporates API token (required — get one at https://opencorporates.com/api_accounts/new)
- `query` (string, required): Officer name to search (e.g., "John Smith")

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/pipeworx-io-open-corporates/pipeworx-mcp-open-corporates#diagnostics

## Score history

- 2026-11-05: 84
- 2026-11-04: 83
- 2026-11-03: 68
- 2026-11-02: 82
- 2026-11-01: 82
- 2026-10-31: 81
- 2026-10-30: 81
- 2026-10-29: 80

## Common questions

### What is the Open Corporates MCP server?

Open Corporates is an MCP server listed in the public MCP registry as io.github.pipeworx-io/open-corporates. OpenCorporates MCP, Global company registry data (BYO key). This page covers its npm package (@pipeworx/mcp-open-corporates).

### Is the Open Corporates MCP server safe to use?

Open Corporates scores 84 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. 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 Open Corporates MCP server expose?

Open Corporates exposes 3 tools: search_companies, get_company, search_officers. Their descriptions and schemas cost roughly 466 tokens of context every time the server is loaded.

### Is the Open Corporates MCP server still maintained?

Open Corporates 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 licence is the Open Corporates MCP server under?

Open Corporates declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

### What did VerifyMCP test on the Open Corporates MCP server?

VerifyMCP ran 16 checks on Open Corporates, covering Malware scan, Known CVEs, Install scripts, Dependency health and 12 more. Endpoint Security and Transport & Reachability do not apply to an npm package, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- npm package: https://www.npmjs.com/package/@pipeworx/mcp-open-corporates
- Socket report: https://socket.dev/npm/package/@pipeworx/mcp-open-corporates
- Repository: https://github.com/pipeworx-io/mcp-open-corporates
- Website: https://pipeworx.io/packs/open-corporates
- Changelog RSS feed: https://verifymcp.io/servers/pipeworx-io-open-corporates/pipeworx-mcp-open-corporates.xml
- Changelog JSON feed: https://verifymcp.io/servers/pipeworx-io-open-corporates/pipeworx-mcp-open-corporates/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/pipeworx-io-open-corporates/pipeworx-mcp-open-corporates.json
- HTML version of this page: https://verifymcp.io/servers/pipeworx-io-open-corporates/pipeworx-mcp-open-corporates