DOL WHD MCP

TypeScript MCP server for Department of Labor WHD Enforcement, OFLC LCA disclosure, OSHA inspection, and SAM.gov contract opportunity data.

Setup

npm install
npm run build

Create a local .env file:

DOL_API_KEY=your-api-key
SAM_GOV_API_KEY=your-sam-gov-api-key
GOOGLE_PLACES_API_KEY=your-google-places-api-key

The server also accepts DOL_API_KEY, SAM_GOV_API_KEY, or SAM_API_KEY from the process environment. SAM.gov tools can run in dry-run mode without a SAM key. Tool responses redact request URLs and never return keys.

Run Locally Over Stdio

npm start

Example MCP client config:

{
  "mcpServers": {
    "dol-whd": {
      "command": "node",
      "args": ["dist/server.js"],
      "cwd": "<project-directory>"
    }
  }
}

Run Remotely Over HTTP

Build first, then start the Streamable HTTP MCP endpoint:

npm run build
npm run start:http

Defaults:

• MCP endpoint: http://127.0.0.1:8787/mcp

• Health check: http://127.0.0.1:8787/health

• Transport: MCP Streamable HTTP, stateless per request.

Remote environment knobs:

DOL_MCP_HOST=127.0.0.1
DOL_MCP_PORT=8787
DOL_MCP_AUTH_TOKEN=change-this-before-exposing
DOL_MCP_ALLOW_ORIGIN=*

If DOL_MCP_AUTH_TOKEN is set, MCP clients must send either:

Authorization: Bearer change-this-before-exposing

or:

X-API-Key: change-this-before-exposing

Keep the default host for local-only access. To make it reachable from another machine, bind to a reachable interface such as 0.0.0.0 and put it behind a trusted tunnel or reverse proxy with authentication. The DOL and SAM.gov API keys remain server-side in .env.

Tools

• ask_government_data: Route a plain-English question to the right database and execute the query against WHD enforcement, OSHA inspections, DOL foreign-labor/LCA disclosures, or SAM.gov opportunities.

• whd_enforcement_query: Query WHD/enforcement with limit, offset, fields, sort, sort_by, and filter_object.

• whd_enforcement_case: Look up a numeric case_id.

• whd_enforcement_metadata: Return full metadata rows, with optional search, category, and limit.

• whd_enforcement_fields: Return concise field descriptions for query building.

• dol_datasets_search: Search the public DOL datasets catalog.

• lca_disclosure_files: Return official DOL OFLC LCA disclosure and record-layout URLs for a fiscal year quarter.

• lca_disclosure_fields: Read field names from a DOL LCA disclosure XLSX file.

• lca_search: Search DOL OFLC LCA disclosure data by employer, worksite, title, SOC, NAICS, status, visa class, wage, and dates.

• lca_employer_profile: Build a DOL LCA-only employer profile with certification counts, wage statistics, top job titles, SOC codes, worksites, H-1B dependent, and willful violator flags.

• foreign_labor_files: Discover official DOL OFLC disclosure workbook, record-layout, and auxiliary file URLs for LCA, PERM, H-2A, H-2B, or CW.

• foreign_labor_fields: Read field names from an official DOL foreign-labor disclosure XLSX file.

• foreign_labor_search: Stream-search DOL OFLC foreign-labor disclosure workbooks and return a unified schema across LCA, PERM, H-2A, H-2B, and CW-1.

• osha_fields: Return metadata for the official DOL OSHA inspection or violation dataset.

• osha_inspection_search: Search OSHA inspections by establishment, state, city, NAICS, inspection type, safety/health, and open-date range. Optionally joins non-deleted violation/citation records.

• osha_inspection_detail: Look up one OSHA inspection by activity_nr and optionally join violation/citation records.

• sam_opportunities_search: Search official SAM.gov contract opportunities by title keywords, NAICS codes, procurement types, set-aside code, place-of-performance state, and posted date range.

• sam_opportunity_detail: Look up one SAM.gov opportunity by noticeId.

• sam_reference: Return common SAM.gov procurement type and set-aside codes.

• places_search: Search Google Places (New) Text Search for businesses in an area. Returns deduped results with googleMapsUrl for source-tracing. Designed as a per-round retrieval primitive for the Restaurant Research Agent.

• places_detail: Look up one Google place by Place ID. Returns hours, delivery/dine-in flags, and (optionally) editorialSummary and reviews.

LCA tools use official OFLC disclosure workbooks from the DOL Performance Data page. The workbooks can be large, so downloaded files are cached under .cache/dol-lca/. You can also pass localFile with an already-downloaded official LCA disclosure XLSX file.

The LCA profile is DOL-only. USCIS H-1B petition approval and denial rates are not included unless a separate USCIS data source is added.

Foreign-labor tools read the DOL Performance Data page to discover current disclosure links, then stream-parse XLSX files row by row. Supported programs are LCA, PERM, H-2A, H-2B, and CW; supported unified-parser fiscal years are 2020 through 2030. Use localFile to point at an already-downloaded official workbook.

OSHA tools use the official DOL Open Data API datasets OSHA/inspection and OSHA/violation. Violation rows are joined to inspections by activity_nr; rows with delete_flag equal to X are excluded from joined output.

SAM.gov tools use the official Opportunities API at https://api.sam.gov/opportunities/v2/search. Live searches require SAM_GOV_API_KEY or SAM_API_KEY; dry-run searches return sample opportunities without calling SAM.gov. The API requires posted date bounds, so postedDaysAgo is converted to postedFrom and postedTo in MM/dd/yyyy format.

Examples

Filter Iowa records with back wages:

{
  "limit": 10,
  "fields": ["case_id", "trade_nm", "st_cd", "bw_atp_amt", "findings_end_date"],
  "sort": "desc",
  "sort_by": "bw_atp_amt",
  "filter_object": {
    "and": [
      { "field": "st_cd", "operator": "eq", "value": "IA" },
      { "field": "bw_atp_amt", "operator": "gt", "value": 0 }
    ]
  }
}

Search field metadata:

{
  "search": "backwage",
  "limit": 20
}

Search LCA disclosure data:

{
  "fiscalYear": 2026,
  "quarter": 1,
  "employerName": "Google",
  "state": "CA",
  "jobTitle": "software",
  "maxResults": 25
}

Build a DOL LCA employer profile:

{
  "fiscalYear": 2026,
  "quarter": 1,
  "employerName": "Google",
  "searchMode": "contains",
  "maxResults": 5000
}

Search unified DOL foreign-labor disclosures:

{
  "visaProgram": "H-2A",
  "fiscalYear": 2026,
  "fiscalQuarter": "Q1",
  "worksiteState": "IA",
  "caseStatus": "Certified",
  "maxItems": 100
}

Search PERM certifications:

{
  "visaProgram": "PERM",
  "fiscalYear": 2026,
  "fiscalQuarter": "Q1",
  "employerName": "Intel",
  "minAnnualWage": 150000,
  "maxItems": 500
}

Search OSHA inspections with joined citations:

{
  "companyName": "Walmart",
  "state": "TX",
  "includeViolations": true,
  "maxResults": 25
}

Search fatality/catastrophe construction inspections:

{
  "state": "TX",
  "naicsCode": "23",
  "inspectionType": "A",
  "dateFrom": "2024-01-01",
  "includeViolations": true,
  "maxResults": 100
}

Search SAM.gov opportunities in dry-run mode:

{
  "keywords": "cybersecurity",
  "naicsCodes": ["541512"],
  "setAsideType": "SBA",
  "postedDaysAgo": 30,
  "maxResults": 10,
  "dryRun": true
}

Search live SAM.gov opportunities after adding a SAM key:

{
  "keywords": "software development",
  "naicsCodes": ["541512", "541511"],
  "procurementTypes": ["o", "k", "r"],
  "state": "VA",
  "postedDaysAgo": 30,
  "maxResults": 100,
  "dryRun": false
}

Ask a plain-English routed question:

{
  "question": "Show OSHA inspections and citations for Walmart in TX",
  "maxResults": 10
}

Ask for SAM.gov opportunities in dry-run mode:

{
  "question": "Find cybersecurity solicitations NAICS 541512 in Virginia",
  "maxResults": 10,
  "dryRun": true
}

Ask for DOL foreign-labor disclosure records:

{
  "question": "H-2A certified farm jobs in IA SOC 45-2092 over $20 hourly",
  "maxResults": 10
}

Search Google Places for restaurants in a city:

{
  "query": "restaurants in Hillsdale, MI",
  "includedTypes": ["restaurant"],
  "maxResults": 30,
  "excludeClosed": true
}

Look up one Google place by Place ID:

{
  "placeId": "ChIJN1t_tDeuEmsRUsoyG83frY4",
  "includeAtmosphere": false
}