Peptigraph MCP server

Which servers in the official MCP registry are Peptigraph's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-19

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Whose server it is

Registry nameorg.peptigraph/mcpverified in the MCP registry

The registry name sits under peptigraph.org. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-19

Stateanswerschecked 2026-10-19
Tools2
Server calls itselfpeptigraph
Server version1.0.0
Protocol version2025-06-18

On 2026-10-19 the server answered initialize and tools/list without a sign-in. First answer in 277 ms.

Measured dailydaily checks: 2, the first on 2026-10-19

Answeredmeasuring2 of the 7 daily checks it takes to print a share
Median first answer751 ms
Space in an agent's context≈ 722 tokensthe definitions of all its tools (2), which an agent carries on every turn
Tool definitionsB · 83 of 100

Not saying whether it only reads or can destroy: 2 of 2

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The state of vendors' MCP servers: method and numbers →

Tools it offers2 tools · read 2026-10-19

reconstitution_calc
Berechnet die Rekonstitution eines Peptid-Vials: aus Vial-Wirkstoffmenge (mg), BAC-Wasser-Volumen (ml) und Zieldosis (mcg) die Einheiten/Striche auf der Insulinspritze, mcg pro Einheit und die Zahl der Dosen pro Vial. Standard ist eine…
reverse_calc
Rückrechnung, wenn zu wenig/zu viel BAC-Wasser eingefüllt wurde: aus der Vial-Wirkstoffmenge (mg) und der GESAMTZAHL der bis zur Leerung gezogenen Einheiten die reale Konzentration (mcg/Einheit) und die reale Dosis einer einzelnen…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "peptigraph": {
      "type": "http",
      "url": "https://peptigraph.org/mcp"
    }
  }
}

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.