# H1b (npm · @pipeworx/mcp-h1b)

H-1B MCP — US H-1B visa sponsorship & wage data from DOL Labor Condition Application (LCA)…

- Trust score: 82/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `gateway.pipeworx.io`: 87/100, [markdown](https://verifymcp.io/servers/pipeworx-io-h1b/h1b-mcp.md), [page](https://verifymcp.io/servers/pipeworx-io-h1b/h1b-mcp)
- npm · `@pipeworx/mcp-h1b`: 82/100 (this document), [markdown](https://verifymcp.io/servers/pipeworx-io-h1b/pipeworx-mcp-h1b.md), [page](https://verifymcp.io/servers/pipeworx-io-h1b/pipeworx-mcp-h1b)

## Channel facts

- Registry: `npm`
- Package: `@pipeworx/mcp-h1b`
- Version: `0.3.1`
- 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-h1b).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 2 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 65/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 693 tokens (~231/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 H1b MCP server?

H1b runs locally as an npm package, launched with npx -y @pipeworx/mcp-h1b. 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-h1b -- npx -y @pipeworx/mcp-h1b
```

### Cursor

```json
{
  "mcpServers": {
    "pipeworx-io-h1b": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-h1b"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "pipeworx-io-h1b": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-h1b"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add pipeworx-io-h1b -- npx -y @pipeworx/mcp-h1b
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "pipeworx-io-h1b": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@pipeworx/mcp-h1b"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add pipeworx-io-h1b --command npx --arg -y --arg @pipeworx/mcp-h1b
```

### Hermes

```yaml
mcp_servers:
  pipeworx-io-h1b:
    command: "npx"
    args: ["-y", "@pipeworx/mcp-h1b"]
```

### Netclaw

```json
{
  "McpServers": {
    "pipeworx-io-h1b": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@pipeworx/mcp-h1b"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add pipeworx-io-h1b -t stdio -c npx -a -y @pipeworx/mcp-h1b
```

### Other

```json
{
  "mcpServers": {
    "pipeworx-io-h1b": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-h1b"
      ]
    }
  }
}
```

## 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 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 81, +26)

- [security improvement] Malware scan: unverified → pass
- [security improvement] Known CVEs: unverified → pass
- [functional improvement] Dependency health: unverified → pass

### 2026-11-02 (score 55, −26)

- [security regression] Malware scan: pass → unverified
- [security regression] Known CVEs: pass → unverified
- [functional regression] Dependency health: pass → unverified
- [functional] Package version: 0.3.0 → 0.3.1

### 2026-11-01 (score 81, +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 80, +1)

- [functional regression] Security disclosure: unverified → fail

### 2026-10-29 (score 79)

First indexed and scored.

## MCP tools (3)

### `h1b_employer_sponsorship` (~210 tokens)

Check whether a US employer sponsors H-1B visas and profile their sponsorship, from DOL Labor Condition Application (LCA) disclosures. Answers 'does company X sponsor H-1B / green cards' for recruiting and candidate advising. Returns the number of certified LCA filings, base-salary range (min / median / max), the top sponsored job titles, and top work locations for the employer. Filter by year (DOL federal fiscal year, Oct-Sep, for recent years); defaults to the latest full year. Employer name is matched as the disclosed legal name (e.g. 'Google', 'Amazon.com Services').

Input parameters:

- `employer` (string, required): Employer name to look up, e.g. "Google", "Deloitte", "Amazon".
- `year` (number|string): Filing year (e.g. 2024). Defaults to the most recent full year. Interpreted as DOL federal fiscal year (Oct-Sep) for recent years.

### `h1b_salary` (~229 tokens)

Look up real H-1B base salaries for a job title from DOL LCA disclosures — a market wage benchmark backed by actual filed salaries (not estimates). Answers 'what do H-1B software engineers earn at company X / in city Y'. Filter by job title, and optionally by employer, city, and year. Returns salary statistics (count, min / median / average / max) plus a sample of individual records (employer, title, salary, location, dates).

Input parameters:

- `city` (string): Optional work city, e.g. "SEATTLE" or "NEW YORK".
- `employer` (string): Optional employer name to scope to, e.g. "Meta".
- `job_title` (string, required): Job title to search, e.g. "software engineer", "data scientist". Matched as a substring of the disclosed title.
- `limit` (number|string): Max sample records to return (default 15, max 50).
- `year` (number|string): Filing year (e.g. 2024). Defaults to the most recent full year.

### `h1b_top_sponsors` (~200 tokens)

Find which US employers sponsor the most H-1B visas for a given job title (optionally in a specific city) — a candidate-sourcing / target-account signal for recruiting. Answers 'which companies sponsor the most data engineers in Austin' or 'top H-1B sponsors for nurses'. Returns employers ranked by certified LCA filings for the role, each with their filing count and median base salary. Backed by real DOL LCA disclosures.

Input parameters:

- `city` (string): Optional work city to scope to, e.g. "AUSTIN" or "NEW YORK".
- `job_title` (string, required): Job title to rank sponsors for, e.g. "data engineer", "physical therapist".
- `limit` (number|string): Max employers to return (default 15, max 50).
- `year` (number|string): Filing year (e.g. 2024). Defaults to the most recent full year.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/pipeworx-io-h1b/pipeworx-mcp-h1b#diagnostics

## Score history

- 2026-11-05: 82
- 2026-11-04: 82
- 2026-11-03: 81
- 2026-11-02: 55
- 2026-11-01: 81
- 2026-10-31: 80
- 2026-10-30: 80
- 2026-10-29: 79

## Common questions

### What is the H1b MCP server?

H1b is an MCP server listed in the public MCP registry as io.github.pipeworx-io/h1b. H-1B MCP, US H-1B visa sponsorship & wage data from DOL Labor Condition Application (LCA)… This page covers its npm package (@pipeworx/mcp-h1b).

### Is the H1b MCP server safe to use?

H1b scores 82 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 H1b MCP server expose?

H1b exposes 3 tools: h1b_employer_sponsorship, h1b_salary, h1b_top_sponsors. Their descriptions and schemas cost roughly 639 tokens of context every time the server is loaded.

### Is the H1b MCP server still maintained?

H1b 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 H1b MCP server under?

H1b 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 H1b MCP server?

VerifyMCP ran 16 checks on H1b, 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-h1b
- Socket report: https://socket.dev/npm/package/@pipeworx/mcp-h1b
- Repository: https://github.com/pipeworx-io/mcp-h1b
- Website: https://pipeworx.io/packs/h1b
- Changelog RSS feed: https://verifymcp.io/servers/pipeworx-io-h1b/pipeworx-mcp-h1b.xml
- Changelog JSON feed: https://verifymcp.io/servers/pipeworx-io-h1b/pipeworx-mcp-h1b/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/pipeworx-io-h1b/pipeworx-mcp-h1b.json
- HTML version of this page: https://verifymcp.io/servers/pipeworx-io-h1b/pipeworx-mcp-h1b