AmericanPeptide.com
An AI-grounded research reference for peptides — a trust layer, not a store.
Browse a curated catalog of 56 research peptides, ask a Claude-powered agent that
grounds every answer in PubChem, ClinicalTrials.gov, PubMed & UniProt, decode a
Certificate of Analysis, and run bench calculators offline. All content is
research-framed and openly licensed (CC BY 4.0) so it stays useful wherever it travels.
Live site · Research agent · Remote MCP · Developers
[!IMPORTANT]
Research and educational reference only — not a medical device, not medical advice, and not a store.
Every AI output is a computational hypothesis requiring validation. Peptide profiles,
dosing reference figures, and mechanisms are framed for laboratory research, not human
use. User-facing pages carry this disclaimer and a research-use gate.
What it is
AmericanPeptide.com treats the domain as a trust and authority asset and builds a
research layer on top of a structured data layer:
- Peptide catalog — research peptides with mechanisms, key research, storage/handling,
synthesis notes, molecular data, and per-compound FAQs. Ships as a research reference,
with no fabricated supplier or price data; sourcing lives in the separate
trust-ranked vendor directory.
- Peptide Agent — a Claude research agent that thinks adaptively and grounds claims in
live scientific sources rather than model memory.
- Remote MCP server — connect the whole catalog + grounding tools into Claude, ChatGPT,
Cursor, or any MCP client.
- Bench tools — reconstitution & blend calculators, a COA decoder, and a design lab,
installable as an offline PWA for use at the bench.
Feature tour
| Area | Highlights |
|---|
| Catalog | /catalog with category & comparison views, /catalog/[slug] profiles, side-by-side /compare/[pair], glossary, research areas, and synthesis walkthroughs. |
Peptide Agent (/research) | Anthropic Claude with adaptive extended thinking, a grounding toolset, streamed responses, and multi-model failover. Cited answers with canonical links. |
| Reconstitution calculator | Vial/dose/water solver on a U-100 syringe with a live diagram, doses-per-vial, a reference matrix, peptide-aware autofill presets, mg-scale presets, and shareable URLs. Works offline. |
COA decoder (/tools/coa-decoder) | Parses a Certificate of Analysis (incl. PDF via pdfjs-dist) and explains what the numbers mean. |
| Design lab & blend calculator | Compound/blend builders under /tools and /compounds. |
| Developer surface | Public catalog API, issued API keys with usage metering, and a Streamable-HTTP MCP endpoint — all sharing one data + grounding core. |
| Offline / PWA | Service worker + offline reference so the bench tools keep working with no network. |
How the Peptide Agent is grounded
The agent (src/lib/agent-tools.ts, served at /api/chat) can call free, key-less
scientific APIs and cite them — so answers are anchored to primary data:
Model selection and an ordered multi-model failover chain live in src/lib/models.ts, so a
single upstream outage doesn't take the agent down. The active model is configurable at
runtime via the AGENT_MODEL environment variable.
Remote MCP server
Connect the catalog as a live data source from any MCP client (Streamable HTTP transport):
https://americanpeptide.com/api/mcp
Its tools reuse the same catalog data and grounding executors as the on-site agent, and
every result carries canonical URLs + CC BY 4.0 attribution so content that travels keeps
pointing home.
Tech stack
- Framework: Next.js 15.5 (App Router, Turbopack) · React 19 · TypeScript (strict)
- Styling: Tailwind CSS v4 · Lucide icons · Recharts
- AI: Anthropic Claude via raw
fetch (no SDK); grounding tools; static system prompts sent as cached blocks
- MCP:
mcp-handler (Streamable HTTP)
- Storage: Upstash Redis (REST) for rate limiting, API keys & usage metering — with in-memory fallback for local dev
- Analytics: Vercel Analytics + Speed Insights, optional GA4
- Docs/PDF:
react-markdown + remark-gfm · pdfjs-dist
Quick start
Prerequisites: Node.js 20+ and npm.
git clone https://github.com/utilityincoming/american-peptide.git
cd american-peptide
npm install
# Configure environment
cp .env.example .env.local # then fill in values (see below)
# Run the dev server (Turbopack)
npm run dev
Open http://localhost:3000.
The site runs with zero config for browsing and the bench tools. The Peptide Agent
needs ANTHROPIC_API_KEY; everything else (Redis, GA) is optional and degrades
gracefully in local dev.
Environment variables
Full documentation lives in .env.example. Summary:
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