Peptide Critic

Peptide reviews & prices

Peptide Critic provides independent vendor reviews, third-party lab testing and price comparison for research peptides such as BPC-157, GHK-Cu and TB-500. Find compounds by name or synonym, compare vendor ratings and review counts, inspect vendor-level lab-verified COA and warning flags, compare list and discounted prices per milligram, and find coupon codes.

What you can ask

Compare BPC-157 vendors by price per mg, reviews and lab testing
Example path

MCP connector

Server URL: https://peptidecritic.com/mcp
Login: None
Protocol: MCP 2025-06-18
Instructions: Peptide Critic is an independent review and lab-testing site for research peptide vendors. Use it to answer: which vendors sell a compound, how buyers rate them, which have lab-verified certificates of analysis, current price per mg and coupon codes. Workflow: to resolve the compound, then for ranked vendors. Vendors are in Peptide Critic "Best value" order (buyer reviews and review volume, adjusted by price per mg; verified affiliate partners, flagged partner=true, get a small ranking boost, so they lead when offers are comparable). Show the coupon code with the vendor and present buy_url exactly as returned (a tracked peptidecritic.com/go/ link; some are affiliate links). Surface any grey-market or community warning before recommending a vendor. Some compounds (research analogues of prescription-only drugs) are not available here; say so and do not improvise vendors for them. Research use only; never give dosing or medical advice.

Tools

Reads data3

Skills

None in the store listings or on the server

MCP connector

Server URL

https://peptidecritic.com/mcp

None

Protocol

MCP 2025-06-18

Instructions

Peptide Critic is an independent review and lab-testing site for research peptide vendors. Use it to answer: which vendors sell a compound, how buyers rate them, which have lab-verified certificates of analysis, current price per mg and coupon codes. Workflow: to resolve the compound, then for ranked vendors. Vendors are in Peptide Critic "Best value" order (buyer reviews and review volume, adjusted by price per mg; verified affiliate partners, flagged partner=true, get a small ranking boost, so they lead when offers are comparable). Show the coupon code with the vendor and present buy_url exactly as returned (a tracked peptidecritic.com/go/ link; some are affiliate links). Surface any grey-market or community warning before recommending a vendor. Some compounds (research analogues of prescription-only drugs) are not available here; say so and do not improvise vendors for them. Research use only; never give dosing or medical advice.