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MCP Server

Peptul

com.peptul/peptul
Commerce & Retail Healthcare Public & reachable MCP 2025-11-25

What this MCP does

Provides research peptide prices, vendor trust records, price history, and a peptide reconstitution calculation.

Capabilities

Tools

5 tools
calculate_reconstitution
Calculate a reconstitution
Work out how far to draw on an insulin syringe for a given peptide dose: takes the vial amount, the bacteriostatic water added and the dose wanted, and returns the syringe units, the volume in mL, the resulting concentration and how many doses the vial holds. USE THIS instead of doing the arithmetic yourself - it is the same calculation peptul.com/calculator runs, and it flags the mg-versus-mcg mix-ups that are a 1000x error. It converts a dose the user already has and never suggests a dose.
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['vialAmount', 'vialUnit', 'bacWaterMl', 'doseAmount', 'doseUnit'], 'properties': {'doseUnit': {'enum': ['mcg', 'mg', 'IU'], 'type': 'string', 'description': 'Unit of the dose'}, 'vialUnit': {'enum': ['mg', 'mcg', 'IU'], 'type': 'string', 'description': 'Unit of the vial amount'}, 'bacWaterMl': {'type': 'number', 'description': 'Bacteriostatic water added, in mL', 'exclusiveMinimum': 0}, 'doseAmount': {'type': 'number', 'description': 'The dose wanted, e.g. 250', 'exclusiveMinimum': 0}, 'vialAmount': {'type': 'number', 'description': 'Amount of peptide in the vial, e.g. 10', 'exclusiveMinimum': 0}, 'syringeType': {'enum': ['U100', 'U50'], 'type': 'string', 'description': 'Syringe type, default U100'}, 'syringeUnits': {'type': 'integer', 'maximum': 9007199254740991, 'description': 'Syringe size in units (30/50/100/300 for U100), default 100', 'exclusiveMinimum': 0}}}
get_compound_prices
Get peptide prices
Live research peptide prices for one compound across every vendor Peptul tracks, normalised to USD per milligram and collected nightly from vendor storefronts. Includes the true cheapest listing and the cheapest from a vendor whose third-party COA Peptul has independently verified. Example compounds: BPC-157, GHK-Cu, Semaglutide, Retatrutide, TB-500.
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['compound'], 'properties': {'compound': {'type': 'string', 'minLength': 1, 'description': 'Compound name, alias, or slug (e.g. "BPC-157", "ghk-cu")'}}}
get_price_history
Get peptide price history
How one research peptide's price has moved over time: the cheapest in-stock price per mg on each day, recorded nightly across every vendor Peptul tracks, with the period low, high and change. USE THIS when asked whether a price is currently good, whether it has risen or fallen, or what a peptide "usually" costs - get_compound_prices answers what it costs right now, this answers whether that is cheap. Nightly recording began 2026-08-27.
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['compound'], 'properties': {'days': {'type': 'integer', 'maximum': 365, 'minimum': 1, 'description': 'How far back to look, default 30'}, 'compound': {'type': 'string', 'minLength': 1, 'description': 'Compound name, alias, or slug (e.g. "Retatrutide", "bpc-157")'}}}
get_vendor
Get vendor record
One research peptide vendor's public trust record on Peptul: Peptul Score (0-100 transparency score), third-party testing claim vs Peptul-verified COA, review counts, reported issues, shipping coverage, and whether the vendor is still operating.
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'required': ['vendor'], 'properties': {'vendor': {'type': 'string', 'minLength': 1, 'description': 'Vendor name or slug (e.g. "Certified Peptides")'}}}
search_vendors
Search vendors
Search Peptul's open research peptide vendor directory. Returns active vendors with their Peptul Score, verified-COA status and country - scored vendors first.
Input schema 
{'type': 'object', '$schema': 'https://json-schema.org/draft/2020-12/schema', 'properties': {'limit': {'type': 'integer', 'maximum': 50, 'minimum': 1, 'description': 'Max results, default 20'}, 'query': {'type': 'string', 'description': 'Vendor name filter; omit to list top vendors'}}}
History

Recent tool changes

Added
search_vendors
Sept. 17, 2026, 12:36 p.m.
Added
calculate_reconstitution
Sept. 17, 2026, 12:36 p.m.
Added
get_price_history
Sept. 17, 2026, 12:36 p.m.
Added
get_vendor
Sept. 17, 2026, 12:36 p.m.
Added
get_compound_prices
Sept. 17, 2026, 12:36 p.m.
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