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SDSentry — SDS Lookup & OSHA HazCom MCP Server

by 0xpi-sdsentry Your server? Claim it
answering

SDSentry — SDS Lookup & OSHA HazCom is answering right now. Last checked 6 min ago. It exposes 6 tools.

Free SDS lookup for one product or a whole chemical inventory list, plus a HazCom readiness check.

Uptime history 50 days of history · worst day 99%
50 days agonow
100.0%
Uptime 24h
91 of 91 checks
6
Tools
read from the server
648 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 6

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 10 October 2026. No other catalogue keeps this.

24 Oct 3 tools appeared ghs_pictogram, hazcom_2024_deadlines, search_sds
24 Oct a tool description was rewritten check_hazcom_readiness
24 Oct a tool changed version
10 Oct a tool appeared find_sds_for_inventory

Nothing serious here today

Today is the operative word: we check SDSentry — SDS Lookup & OSHA HazCom every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

run in your terminal
claude mcp add sds-lookup --transport http https://sdsentry.0xpi.com/mcp-sds
Settings → Connectors → Add custom connector, then paste this address
https://sdsentry.0xpi.com/mcp-sds
~/.codex/config.toml
[mcp_servers.sds-lookup]
url = "https://sdsentry.0xpi.com/mcp-sds"
.cursor/mcp.json
{
  "mcpServers": {
    "sds-lookup": {
      "url": "https://sdsentry.0xpi.com/mcp-sds"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "sds-lookup": {
      "type": "http",
      "url": "https://sdsentry.0xpi.com/mcp-sds"
    }
  }
}

Available tools 6

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

hazcom
check_hazcom_readiness
Explains the OSHA Hazard Communication (HazCom) 2024 update employer dates (20 Nov 2026 for substances, 19 May 2028 for mixtures) and what a facility that stores chemicals needs in place (current safety data sheets, GHS container labels, a written program, and documented employee training), then points to a free, no-signup readiness self-audit. Does NOT invent fines, statistics, or legal conclusions. Use it when someone asks whether their business is OSHA HazCom compliant or ready for the deadline.
hazcom_2024_deadlines
Returns the compliance dates of OSHA's 2024 Hazard Communication Standard update (29 CFR 1910.1200) as extended by 91 FR 1695 (January 15, 2026): for chemical manufacturers/importers/distributors and for employers, for substances and for mixtures, with days remaining. Notes that OSHA State Plans may set different dates. Read-only, free.
sds
find_sds_for_inventory
Look up the manufacturer safety data sheet (SDS) for a LIST of workplace chemicals or products at once, e.g. the product-name column of a chemical inventory spreadsheet. Returns one row per product: whether a verified SDS PDF was found, the manufacturer, and the PDF link, using the same rules as find_safety_data_sheet (an unidentifiable product is reported as not found, never guessed). Up to 10 products per call; call again for the rest. Free, no signup. Use it when someone has several chemicals or an SDS binder/inventory to fill in.
search_sds
Find a manufacturer safety data sheet (SDS) by product name or manufacturer, using the same lookup that powers SDSentry's free /sds-search page plus matching sheets already in SDSentry's shared SDS library. Returns up to 5 matches with product, manufacturer, revision date when recorded, the SDS PDF link and a public page to view or print it. A product that cannot be identified reliably is reported as not found, never guessed. Read-only, free, no signup.
ghs
ghs_pictogram
Given a GHS pictogram code (GHS01 to GHS09) or its name (for example "flame over circle", "skull and crossbones"), returns what it means, the hazard classes it covers as listed on OSHA's pictogram QuickCard (OSHA 3491, 2024), whether OSHA's Hazard Communication Standard requires it, and SDSentry's guide page for it. Read-only, free.
safety
find_safety_data_sheet
Look up the manufacturer safety data sheet (SDS/MSDS) for a workplace chemical or product by name. Returns the product name, manufacturer, CAS number(s), EPA registration where applicable, a link to the actual SDS PDF, and a confidence level. If the product cannot be identified reliably it says so plainly rather than guessing — a wrong SDS is worse than none. Free, no signup. Use it when someone needs hazard or handling information, or the SDS, for a chemical they keep on site.

Endpoints

URLTransportStateLatencyChecked
https://sdsentry.0xpi.com/mcp-sds streamable-http answering 659 ms 6 min ago

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SDSentry — SDS Lookup & OSHA HazCom — questions

Answers built from our own checks of this server.

What can SDSentry — SDS Lookup & OSHA HazCom do?
It exposes 6 tools, read directly from the server on our last check. Among them: check_hazcom_readiness, find_safety_data_sheet, find_sds_for_inventory, ghs_pictogram, hazcom_2024_deadlines, search_sds. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
What is SDSentry — SDS Lookup & OSHA HazCom mostly used for?
Its tools cluster around hazcom and sds. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is SDSentry — SDS Lookup & OSHA HazCom working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 648 ms. The bar chart above shows every period we have measured.
How do I connect SDSentry — SDS Lookup & OSHA HazCom?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does SDSentry — SDS Lookup & OSHA HazCom need an API key?
No. SDSentry — SDS Lookup & OSHA HazCom completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is SDSentry — SDS Lookup & OSHA HazCom?
It answers our handshake in 648 ms on average, which is faster than 18% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.