CodeSampleX

Sample

verify @modelcontextprotocol/sdk.McpServer in pkg:npm/%40modelcontextprotocol/sdk@1.30.0

sha256:8b026dc8c483a9b470aa244ae48c7d40dc547aa8f4897a5bc16a5960e6783ca4

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…
2026-08-27

Case

HOW
Goal
verify @modelcontextprotocol/sdk.McpServer in pkg:npm/%40modelcontextprotocol/sdk@1.30.0
Packages
Symbols
  • @modelcontextprotocol/sdk.McpServer
Environment
node 22.23.2
Created
2026-08-27T21:58:36Z

Contract

  1. McpServer initializes with server metadata and exposes the underlying low-level Server instance
  2. McpServer.tool registers tools with Zod schema validation and executes handlers over transport
  3. McpServer.tool returns structured error results with isError true when argument validation fails
  4. McpServer.resource registers static and dynamic templated resources and serves resource contents
  5. McpServer.prompt registers prompt templates with arguments and renders structured prompt messages
  6. McpServer pairs with Client over InMemoryTransport and closes cleanly

Files

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.js
  • test/contract.mjs

Download the source artifact (tar.gz)

Origin Seeder

anonymous