Osha MCP Server

@pipeworx/osha

US OSHA workplace-safety standards (29 CFR) AND OSHA enforcement records — inspections, violations, and penalties by establishment.

Part of Pipeworx — an MCP gateway connecting AI agents to 1764+ live data sources. This is an independent, unofficial integration — not affiliated with, endorsed by, or published by the upstream provider.

Tools

• osha_standard(citation) — full text of one OSHA standard by citation (e.g. "1910.132"), or a part's section list.
• osha_search(query, limit?) — keyword search across OSHA standards (29 CFR parts 1900–1990).
• osha_inspections(establishment?, state?, since?, limit?) — OSHA inspections for a named establishment and/or state, with dates, inspection type, scope, and open/closed status.
• osha_inspection(activity_nr) — one inspection's violations: standard cited, violation type, instances, employees exposed, and initial + current penalty amounts, with totals.
• osha_establishment_summary(name, state?) — rolled-up inspection count, violation count, total penalties, last inspection date, and the distinct establishment names matched.

Auth

• osha_standard / osha_search: keyless (eCFR).
• osha_inspections / osha_inspection / osha_establishment_summary: platform key (PLATFORM_DOL_KEY) with BYO override via _apiKey — the same key and the same DOL Open Data Portal account the dol-whd pack uses.

Data sources

• https://www.ecfr.gov/api — eCFR, for the standards tools.
• https://apiprod.dol.gov/v4/get/osha/inspection/json — OSHA Inspection (DOL dataset 10334).
• https://apiprod.dol.gov/v4/get/osha/violation/json — OSHA Violation (DOL dataset 10338).

Both enforcement tables are called live, per request — no stored copy. Measured 2026-10-09/10 against the live API:

• The HTML establishment-search UI the original task named (osha.gov/pls|ords/imis/establishment.search) sits behind an AWS WAF "Human Verification" CAPTCHA on every request — HTTP 405, x-amzn-waf-action: captcha — even from a plain curl with a full browser User-Agent. That is a JS/CAPTCHA challenge, not a UA check, so no server-side fetch (including a Cloudflare Worker) can pass it. It is not used by this pack.
• enforcedata.dol.gov 301-redirects to data.dol.gov, the same React SPA host dol-whd already reverse-engineered. Its real API — apiprod.dol.gov/v4 — serves OSHA's inspection and violation tables live and per-request, filterable by filter_object, not as a bulk-download catalog. Frequency is "Daily"; a live violation row's load_dt was the day before this was built. No baking, no KV/D1, no database — this reuses dol-whd's already-funded platform key.
• Row access repeats two dol-whd findings: the /v4/get/... endpoint REJECTS the key as an X-API-KEY HEADER (401) and requires it as a QUERY PARAMETER instead; a zero-match query answers HTTP 204 with an EMPTY body, not {"data":[]}.
• NEW, not documented anywhere DOL publishes: like matching on estab_name is CASE-SENSITIVE and the column is stored UPPER-CASE — %walmart% 204s, %WALMART% 200s for the identical establishment. Every name/establishment argument is upper-cased before building the filter.
• The ~20-call/10-minute 429 throttle dol-whd documented is shared by this dataset (hit it live while building this pack). On 429, each enforcement tool backs off twice, then returns reason: 'upstream_rate_limited' rather than a bare throw or a silent found:false.
• data_as_of on every enforcement response is the call's own timestamp — there is no cache to report a load date for; the request IS the read.

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "osha": {
      "url": "https://gateway.pipeworx.io/osha/mcp"
    }
  }
}

What this endpoint actually serves

tools/list at https://gateway.pipeworx.io/osha/mcp returns the tools in the table above plus the shared Pipeworx meta-tools — ask_pipeworx, discover_tools, search_within, remember/recall and the rest of the gateway-wide set. So the tool count you see is larger than this table: a single-pack endpoint currently lists roughly 30 shared tools alongside the pack's own. The connection's initialize response states its exact scope, and is the authoritative answer for a given day.

This is deliberate, not multiplexing by accident. The meta-tools are what let a scoped connection answer a question this pack does not cover — via ask_pipeworx, which routes across the whole catalog — without you adding a second MCP server. There is currently no way to mount a pack endpoint without them; if the extra schemas cost you more context than the routing is worth, connect to the full gateway once rather than to several pack endpoints.

Or connect to the full Pipeworx gateway to get every pack's tools listed directly, instead of just this one's:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://gateway.pipeworx.io/mcp"
    }
  }
}

Both URLs reach the same gateway and the same 1764+ data sources. The only difference is which pack's tools are listed directly; ask_pipeworx reaches all of them from either one.

No MCP client? Call it over HTTP

curl -X POST https://gateway.pipeworx.io/v1/tools/osha_standard \
  -H 'Content-Type: application/json' \
  -d '{"citation":"1910.132"}'

No account needed for the first calls. Inspect any tool: GET https://gateway.pipeworx.io/v1/tools/osha_standard. Find one: POST https://gateway.pipeworx.io/v1/tools/search_packs with {"query":"..."}.

Standalone (no gateway account)

This package also runs as a local stdio MCP server — no Pipeworx account, no gateway round-trip:

{
  "mcpServers": {
    "osha": {
      "command": "npx",
      "args": ["-y", "@pipeworx/mcp-osha"]
    }
  }
}

Or run it directly to confirm it starts:

npx -y @pipeworx/mcp-osha

It speaks MCP over stdin/stdout and answers initialize/tools/list/tools/call for only this pack's tools — none of the shared meta-tools the gateway connection above adds. Same source, same tools, no ask_pipeworx routing.

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English — this works on the pack endpoint above as well as on the full gateway:

ask_pipeworx({ question: "your question about Osha data" })

The gateway picks the right tool and fills the arguments automatically.

More

• Docs and guides
• pipeworx.io

License

MIT