Peptide Library
REMOTE · PEPTIDELIBRARY.APP
Peptide research profiles, evidence by tier, comparisons and educational content. No dosing.
Available components
Last scanned (12 hours ago)
Scores higher than 82% of remote servers
Reachable. Last reached 24 Oct 2026.
Category Health and Science
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security80
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability84
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 5864 tokens (~27/item across 217 items; 10 tools + 207 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management30
- Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage99
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 96% of tool parameters carry a description.Partial
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 10 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 12 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 23 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 21 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 19 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 16 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 15 Oct 26 75
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 24 Oct 2026 · Probed https://peptidelibrary.app/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=peptidelibrary.app | CN=YE1,O=Let's Encrypt,C=US | 7 Sept 2026 | 6 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 5101243d1703d8d348d23192b04bf4b6744 |
| SANs: *.peptidelibrary.app, peptidelibrary.app | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of peptidelibrary.app. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| app. | present | 23684 | 8 | Verified |
| peptidelibrary.app. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains |
| x-content-type-options | nosniff |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(), microphone=(), geolocation=(), payment=(self "https://js.stripe.com") |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://peptidelibrary.app/mcp | Verified | 200 | |
| http (plaintext) | http://peptidelibrary.app/mcp | HTTPS enforced | 301 | https://peptidelibrary.app/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
blend_concentrations Blend concentrations ~85
For several components dissolved together in one volume: each component's concentration and its share of the blend by amount. Arithmetic only; it says nothing about whether components can or should be combined.
| Name | Type | Req | Description |
|---|---|---|---|
| components | array | yes | – |
| volume_ml | – | yes | Total volume of liquid, in mL. A number; "2,5" and "2.5" both work. |
| Name | Type | Req | Description |
|---|---|---|---|
| components | array | yes | – |
| disclaimer | string | yes | – |
| issues | array | yes | – |
| missing | array | yes | – |
| note | string | yes | – |
| retrieved_at | string | yes | – |
| share_unit | – | yes | – |
| source | object | yes | – |
| status | string | yes | – |
| volume_ml | – | yes | – |
No examples provided.
compare_peptides Compare peptides ~135
Side-by-side research comparison of 2-3 peptides on structured profile fields: mechanism and targets, research areas, evidence level and human-trial availability, safety and side effects, FDA/WADA status, half-life and studied routes, with references. Each row says whether the values are the same, different, partial, not comparable or incomplete; missing data is never filled in and the comparison never ranks peptides. Suitable for tables. No dosing information.
| Name | Type | Req | Description |
|---|---|---|---|
| dimensions | array | – | Which comparison sections to return (default: all). |
| peptides | array | yes | 2 or 3 peptide ids, names or aliases to compare. |
| Name | Type | Req | Description |
|---|---|---|---|
| compare_url | string | yes | – |
| dimensions | array | yes | – |
| disclaimer | string | yes | – |
| how_to_read | string | yes | – |
| insights | array | yes | – |
| notes | array | yes | – |
| peptides | array | yes | – |
| retrieved_at | string | yes | – |
| source | object | yes | – |
No examples provided.
convert_units Convert peptide amount units ~149
Convert an amount between mg and mcg exactly. IU ↔ mass conversion only works with a peptide whose profile documents an IU-per-mg factor (pass `peptide`); otherwise the result is an iu_factor_missing issue, never an assumed factor. Pure arithmetic: not a dosing recommendation.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | – | yes | The amount to convert. A number; "2,5" and "2.5" both work. |
| from | string | yes | Unit of the amount (mg, mcg or IU). |
| peptide | string | – | Peptide whose documented IU factor to use (only needed for IU). |
| to | string | yes | Unit to convert to (mg, mcg or IU). |
| Name | Type | Req | Description |
|---|---|---|---|
| disclaimer | string | yes | – |
| input | object | yes | – |
| issues | array | yes | – |
| iu_factor | – | yes | – |
| note | string | yes | – |
| result | – | yes | – |
| retrieved_at | string | yes | – |
| source | object | yes | – |
| status | string | yes | – |
No examples provided.
cost_per_amount Cost per amount ~251
Price 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. Uses only the numbers given; it never estimates prices or shipping and converts no currencies.
| Name | Type | Req | Description |
|---|---|---|---|
| amount_per_package | – | yes | Amount in each vial or package. A number; "2,5" and "2.5" both work. |
| amount_unit | string | yes | Unit of the amount per package (mg, mcg or IU). |
| currency | string | – | ISO currency code of the price (no conversion is done). |
| package_count | – | – | Number of vials or packages bought for that price. A number; "2,5" and "2.5" both work. |
| peptide | string | – | Optional: peptide whose documented IU factor to use for cost per IU. |
| price | – | yes | Price paid for the product, in major units (e.g. 49.99). A number; "2,5" and "2.5" both work. |
| shipping | – | – | Optional one-time shipping cost, same currency. A number; "2,5" and "2.5" both work. |
| Name | Type | Req | Description |
|---|---|---|---|
| cost_per_amount_unit | – | yes | – |
| cost_per_unit | object | yes | – |
| currency | string | yes | – |
| disclaimer | string | yes | – |
| issues | array | yes | – |
| iu_factor | – | yes | – |
| missing | array | yes | – |
| note | string | yes | – |
| retrieved_at | string | yes | – |
| source | object | yes | – |
| status | string | yes | – |
| total_amount | – | yes | – |
| total_cost | – | yes | – |
No examples provided.
get_peptide_categories List research categories ~62
List the Peptide Library research categories (e.g. GLP-1/Metabolic, Cognitive, Longevity) with a description, the number of profiles and every profile in each, with links. Use a category id with search_peptides to filter.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| categories | array | yes | – |
| disclaimer | string | yes | – |
| note | string | yes | – |
| retrieved_at | string | yes | – |
| source | object | yes | – |
No examples provided.
get_peptide_details Get peptide research profile ~137
Full educational research profile for one peptide: classification, mechanism and targets, research areas, evidence by tier (regulatory label, controlled human trials, other human studies, secondary reports, animal and in-vitro research) with cited sources, safety and side effects, regulatory status (FDA, WADA), review dates and the canonical Peptide Library URL. Fields the profile lacks are "not_documented". Dose figures and administration instructions are never included.
| Name | Type | Req | Description |
|---|---|---|---|
| peptide | string | yes | A peptide id (e.g. "bpc-157"), name, synonym or alias (e.g. "PT-141", "Ozempic"). |
| Name | Type | Req | Description |
|---|---|---|---|
| also_known_as | array | yes | – |
| categories | array | yes | – |
| classification | object | yes | – |
| disclaimer | string | yes | – |
| evidence | object | yes | – |
| id | string | yes | – |
| mechanism | object | yes | – |
| name | string | yes | – |
| notes | array | yes | – |
| properties | object | yes | – |
| references | array | yes | – |
| regulatory | object | yes | – |
| research_areas | array | yes | – |
| retrieved_at | string | yes | – |
| review | object | yes | – |
| safety | object | yes | – |
| source | object | yes | – |
| summary | – | yes | – |
| url | string | yes | – |
No examples provided.
get_research_trends Get research trends ~74
This week's most-researched peptides in the Peptide Library community (Trending Now, last 7 days): rank, share of researchers and growth as percentages, with what moved. Aggregate and privacy-preserving: no head counts, no individual activity, small cohorts suppressed. Popularity is not evidence of safety or effectiveness.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| as_of | – | yes | – |
| board | string | yes | – |
| disclaimer | string | yes | – |
| methodology | array | yes | – |
| more | string | yes | – |
| period | string | yes | – |
| retrieved_at | string | yes | – |
| rows | array | yes | – |
| share_means | string | yes | – |
| source | object | yes | – |
| status | string | yes | – |
| trends_url | string | yes | – |
| window | – | yes | – |
No examples provided.
search_peptides Search peptides ~187
Search the Peptide Library research database by name, synonym or alias (fuzzy), optionally filtered by research category or research area. Returns short educational profiles with evidence level and the canonical Peptide Library URL. Use get_peptide_details for the full profile. No dosing information.
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | Limit to one Peptide Library research category (see get_peptide_categories). |
| limit | integer | – | Results per page (1-25). |
| offset | integer | – | Results to skip, for pagination (use next_offset from the previous page). |
| query | string | – | Name, synonym, alias or partial name to search for (fuzzy; e.g. "bpc", "semaglutide", "PT-141"). |
| research_area | string | – | Limit to peptides studied for this research area, e.g. "tissue repair", "cognition". |
| Name | Type | Req | Description |
|---|---|---|---|
| disclaimer | string | yes | – |
| filters | object | yes | – |
| library_url | string | yes | – |
| page | object | yes | – |
| query | – | yes | – |
| results | array | yes | – |
| retrieved_at | string | yes | – |
| source | object | yes | – |
No examples provided.
search_research Search research content ~150
Search Peptide Library's own educational content: the site FAQ, per-peptide FAQs, published articles and free courses. Returns titles, short snippets and links with source attribution (no full text, no third-party articles). Dosing, reconstitution and injection guides, and content about buying, vendors or prices, are excluded.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Results to return (1-10). |
| query | string | yes | What to look for in Peptide Library's educational content, e.g. "GLP-1 mechanism", "what is a half-life". |
| types | array | – | Content types to search (default: all): site FAQ, per-peptide FAQ, articles, courses. |
| Name | Type | Req | Description |
|---|---|---|---|
| disclaimer | string | yes | – |
| notes | array | yes | – |
| query | string | yes | – |
| results | array | yes | – |
| retrieved_at | string | yes | – |
| source | object | yes | – |
| total_matches | integer | yes | – |
| unavailable_sources | array | yes | – |
No examples provided.
solution_concentration Solution concentration ~161
Concentration 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. Pure arithmetic on the given numbers: it does not suggest amounts, volumes or how to prepare anything.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | – | yes | Amount of substance. A number; "2,5" and "2.5" both work. |
| peptide | string | – | Optional: peptide whose documented IU factor to use for IU/mL. |
| unit | string | yes | Unit of the amount (mg, mcg or IU). |
| volume_ml | – | yes | Volume of liquid, in mL. A number; "2,5" and "2.5" both work. |
| Name | Type | Req | Description |
|---|---|---|---|
| concentration | – | yes | – |
| disclaimer | string | yes | – |
| issues | array | yes | – |
| iu_factor | – | yes | – |
| missing | array | yes | – |
| note | string | yes | – |
| retrieved_at | string | yes | – |
| source | object | yes | – |
| status | string | yes | – |
No examples provided.
How do I install the Peptide Library MCP server?
Peptide Library is a hosted endpoint at https://peptidelibrary.app/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · peptidelibrary.app
claude mcp add --transport http app-peptidelibrary-peptide-library 'https://peptidelibrary.app/mcp'
What is the Peptide Library MCP server?
Peptide Library is an MCP server listed in the public MCP registry as app.peptidelibrary/peptide-library. Peptide research profiles, evidence by tier, comparisons and educational content. No dosing. This page covers its hosted endpoint (https://peptidelibrary.app/mcp).
Is the Peptide Library MCP server safe to use?
Peptide Library scores 79 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Peptide Library MCP server expose?
Peptide Library exposes 10 tools: search_peptides, get_peptide_details, compare_peptides, search_research, get_peptide_categories, and 5 more. Their descriptions and schemas cost roughly 1,391 tokens of context every time the server is loaded.
Does the Peptide Library MCP server require authentication?
No. We connected to Peptide Library without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Peptide Library MCP server still maintained?
Peptide Library is still listed as active in the MCP registry. We last reached this channel on 24 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.