Fetch and follow the instructions at https://qamcp.dev/setup.md to test my MCP server.Your AI finds your server in your project, tests it with QAmcp, explains what's wrong in plain words, fixes it with your OK, and tests again. Read the instructions
Directory / Peptide Library
Peptide Library
by peptidelibrary.app · https://peptidelibrary.app/mcp
Peptide research profiles, evidence by tier, comparisons and educational content. No dosing.
12 of 12 checks · 8 Nov 2026
At a glance
- Runs where
- On their server. What you send to it goes to them.
- What you need
- Nothing: it answered without a login
- Tools
- 12 tools
- Its own safety labels
- 12 read-only
- Memory it takes
- About 3,400 tokens of your AI's memory, just for its tool descriptions
- Largest answer
- About 111 KB in our test
- Speed
- Average answer in our test: 471 ms
Tokens are an estimate: the characters in its tool names, descriptions and inputs, divided by 4. The exact number depends on your AI model. Safety labels are what the server says about itself. From our latest test, 8 Nov 2026.
Is Peptide Library MCP server safe?
- None of the hidden-instruction wordings we know were found in its 12 tool descriptions.
- Its error messages showed no secrets or internal details.
- All 12 of its tools are labeled read-only.
- Overall it scored 91/100 on 8 Nov 2026.
A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.
What this test does not check
- Its source code and packages.
- What a tool quietly does behind the scenes, such as writing a file or calling another service.
- Instructions hidden inside live tool answers. We only look for those in tool descriptions.
- Hidden instructions worded in a way our list doesn't know yet.
- Tools that could change something. Those are read, never run.
What QAmcp can and can't see · How to tell if an MCP server is safe · Hidden instructions · Prompt injection
Known security advisories
None found in GitHub Security Advisories on 8 Nov 2026.
That means none were published there, not that there are no problems. QAmcp tests how a server behaves. It does not scan source code.
What it can do
12 tools, in the server's own words.
search_peptidesread-onlySearch the Peptide Library research database by name, synonym or alias (fuzzy), optionally filtered by research category or research area.
get_peptide_detailsread-onlyFull educational research profile for one peptide: classification, mechanism and targets, research areas, evidence by tier (regulatory label, controlled human …
compare_peptidesread-onlySide-by-side research comparison of 2-3 peptides on structured profile fields: mechanism and targets, research areas, evidence level and human-trial availabili…
search_researchread-onlySearch Peptide Library's own educational content: the site FAQ, per-peptide FAQs, published articles and free courses.
get_peptide_categoriesread-onlyList the Peptide Library research categories (e.g.
get_research_trendsread-onlyThis week's most-researched peptides in the Peptide Library community (Trending Now, last 7 days): rank, share of researchers and growth as percentages, with w…
get_evidence_summaryread-onlyWhat reviewed human research shows for one peptide, claim by claim: each claim under investigation, its GRADE certainty per outcome (or that it is not yet asse…
get_human_studyread-onlyThe reviewed record of one distinct human study (id like PLS-00001, from get_evidence_summary): design, planned and actual participants, groups, outcomes as th…
convert_unitsread-onlyConvert an amount between mg and mcg exactly.
solution_concentrationread-onlyConcentration of an amount dissolved in a volume of liquid (amount ÷ volume), as mg/mL, mcg/mL and, with a peptide's documented factor, IU/mL.
blend_concentrationsread-onlyFor several components dissolved together in one volume: each component's concentration and its share of the blend by amount.
cost_per_amountread-onlyPrice arithmetic for a purchase: total cost (price plus optional shipping) and cost per mg, per mcg and (with a peptide's documented factor) per IU.
Test results
Safe mode: only tools labeled read-only were run. How the test works
- !Tools work with good inputsnote
1 warning
- !get_peptide_categories: Answered with about 111 KB of text. Many AI apps cut off tool answers this big, so the AI may never see the end of it.
- –convert_units: Not run: labeled read-only, but its has a "amount" input, which usually means it changes something. Skipped to be safe: if it only reads, a clearer description helps AI apps too, or test again with --owner
- –solution_concentration: Not run: labeled read-only, but its has a "amount" input, which usually means it changes something. Skipped to be safe: if it only reads, a clearer description helps AI apps too, or test again with --owner
- –cost_per_amount: Not run: labeled read-only, but its has a "price" input, which usually means it changes something. Skipped to be safe: if it only reads, a clearer description helps AI apps too, or test again with --owner
- and 8 more
- !Follows MCP best practices (not scored yet)note
1 tip (not scored)
- !The tool list is about 45 KB (roughly 11k tokens). AI apps send it with every message, so it takes that much of the AI's memory before any work starts.
- !Resources and prompts worknote
1 warning (213 resources, 1 template, 5 prompts)
- !explain_mechanism: Could not open it with sample inputs: Invalid arguments for prompt explain_mechanism: audience: Invalid option: expected one of "general"|"student"|"researcher"
- and 4 more
- ✓ConnectsConnected in 741 mspass
- ✓Ready for the newest MCP versionUses the latest MCP version (2026-07-28)pass
- ✓Lists its toolsFound 12 toolspass
- ✓Every tool is describedAll 12 tools and their inputs are describedpass
- ✓Tools are labeled safe or dangerousEvery tool has a safety labelpass
- ✓No known hidden instructionsNone of the hidden-instruction wordings we know were found in tool descriptions. New wordings can get past this check.pass
- ✓Bad inputs give a clean errorpass
All good
- ✓search_peptides: Refused wrong type for "query" with a clear error
- ✓get_peptide_details: Refused missing required input "peptide" with a clear error
- ✓get_peptide_details: Refused wrong type for "peptide" with a clear error
- ✓compare_peptides: Refused missing required input "peptides" with a clear error
- ✓compare_peptides: Refused wrong type for "peptides" with a clear error
- ✓search_research: Refused missing required input "query" with a clear error
- ✓search_research: Refused wrong type for "query" with a clear error
- ✓get_evidence_summary: Refused missing required input "peptide" with a clear error
- and 5 more
- ✓Fast enoughpass
All good
- ✓Connecting took 741 ms
- ✓Listing tools took 683 ms
- ✓Average tool answer: 471 ms
- ✓search_research: Slowest tool: search_research (2.0 s)
- ✓No secrets leakedChecked 22 error messages: no secrets or internal detailspass
- –Tools work togetherNo tool's answer could be fed into another tool, so there were no chains to test (not counted either way)not tested
Test it yourself
Free and open source. Same checks, same score.
npx qamcp-cli https://peptidelibrary.app/mcpShow this score on GitHub
Free for every server in the directory. Paste this into your README: the badge shows the score from our latest test.
[](https://qamcp.dev/s/app-peptidelibrary-peptide-library.html)Score over time
- 8 Nov 202691
One test so far. New tests will show here.
Reviews
Coming soon: reviews from people who use Peptide Library, signed in with GitHub, one per person. Reviews never change the score.
QAmcp Monitor tests it every hour and emails you when it goes down, the score drops, a tool changes or a secret leaks. Free for 1 server, no card.
Have a concern, or want it removed? Ask us and we'll take it off the list. How the directory works