Peptul gives an assistant live research-peptide prices, price history, vendor trust records and a reconstitution calculator.
What you can do
Look up a compound's current price per milligram across tracked vendors, including the cheapest listing and the cheapest COA-verified vendor. Check a single vendor's trust record: score, testing claims, reviews, reported issues and shipping coverage. Review how a compound's cheapest in-stock price has moved over time, with period low, high and change. Search the vendor directory by score, verified-COA status and country. Calculate syringe units, volume, concentration and doses per vial for a given vial size, water volume and dose.
When to use it
Useful when comparing peptide prices across vendors, judging whether a current price is good against its history, vetting a vendor's testing and reputation, or working out syringe draw amounts for a dose.
Requirements
Remote endpoint at the provider's site; no packages, environment variables or headers are declared.
Before you install
Prices and vendor records come from third-party storefronts and are informational only; the reconstitution calculator is arithmetic, not medical advice. No authentication is declared, so treat results as public reference data rather than verified purchases.
Enable the server for the chats that should use its tools.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Use with an agent
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/com.peptul%2Fpeptul/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.
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.
Parameterscompoundrequired
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.
Parametersvendorrequired
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.
Parametersdayscompoundrequired
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.
Search Peptul's open research peptide vendor directory. Returns active vendors with their Peptul Score, verified-COA status and country - scored vendors first.
Parameterslimitquery
Version history
1
v1.0.0LatestSep 16, 2026
Score
83%
83% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
Reached in the last 30 daysRequired25 pts
Auth declaredRequired10 pts
Tools listedRequired15 pts
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
LicenseNot applicable
A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.