Heavy Metal Index
A curated reference on heavy metals in food, ingredients, consumer-product categories, regulations, and source evidence. Operated by the Institute of Contaminant Standards.
https://heavymetalindex.com/Opens ChatGPT on the web or desktop and asks it to use the WebMCP tools available here.
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https://heavymetalindex.com/api/mcpWe add this server to your workspace, then open Studio — saved access, one connection to many servers, with a history of what ran.
Last probed Sep 14, 2026 · heavymetalindex.com
8tools discovered
Contamination Lookup
Get the contamination profile for an ingredient — per-analyte typical and 95th-percentile concentration ranges in ppb (µg/kg), confidence, sample size, and citation handles. Use this when a user asks about heavy-metal levels in a specific food ingredient (rice, cocoa, fish, etc.).
Regulation Lookup
Find regulatory thresholds matching jurisdiction / metal / matrix. Returns limit_value, limit_unit, agency, status, effective_date, and citation handles. Use this when a user asks about regulatory limits, action levels, tolerable intakes, or jurisdiction-specific thresholds.
Synthesis Lookup
Find synthesis pages — cross-source analytical claims the Heavy Metal Index has published. Use when a user asks 'what does the literature conclude about X'. Returns the synthesis claim, confidence, contributing sources, and dissenting sources where present.
Search Evidence
Free-text search across the public Heavy Metal Index corpus. Returns the top-ranked pages with title, slug, url, and a short excerpt. Use as a fallback when the structured lookups above don't fit the question.
Coverage Status
Corpus coverage at a glance — counts of source pages by tier and source type, ingredient/product/metal/regulation page totals, and contamination-profile completeness. Use when a user asks how much of a topic the Heavy Metal Index has indexed, or where the gaps are.
Source Lookup
Look up a source page by its cite_key (the slug under wiki/sources/, e.g. 'angelon-gaetz2018-lead-spices-north-carolina'). Returns DOI, access URL, authors, year, publication, evidence tier, review state, and the page URL.
Regulation History
Chronological timeline of regulatory thresholds matching the filters, ordered by effective_date ascending. Supersedeed entries are preserved so downstream readers see how a limit has moved over time. Use for 'how has the limit changed' or 'what is the latest' questions.
Product Category Lookup
Look up an HMTc product-category page or all rows in a category. Returns slug, title, hmtc_category, hmtc_row, variant_type (clean_benchmark / contamination_platform / whole_row_platform), pair (sibling slug), platform_metals, contributing source count, and page URL.
Get your MCP into directories
A working endpoint is step one. Directory coverage is the coordinated launch across ChatGPT, Claude, Cursor, the MCP Registry, and community indexes.
Directory coverage for brandsA curated reference on heavy metals in food, ingredients, consumer-product categories, regulations, and source evidence. Operated by the Institute of Contaminant Standards.
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MCPBundles probed 8 tools on the live server. The tool list on this page reflects what was discovered at the last refresh — connect your client to see the full set available to your session.
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