Trust score
72/100
MarketNow Registry / Security / @mcpspec/core
@mcpspec/core
Core engine for [MCPSpec](https://www.npmjs.com/package/mcpspec) — the reliability platform for MCP servers. MCP client, test runner, security scanner (including Tool Poisoning detection), performance
Security
v1.2.2
by lighthandle
Install risk
Runs registry code
Downloads / week
100
Source
npm-registry
Indexed
2026-09-10
Install
$ npx -y @mcpspec/coreInstalling via npx/uvx/npm install executes arbitrary code from the public registry on your machine. This is the install-risk semantic of the MarketNow catalog — verify the publisher before running it.
Adoption evidence: 100 weekly registry downloads.
How MarketNow scored this
Sentinel Index Heuristics — a security-first estimate from public signals:
- Package age and release activity (stale repositories lose points)
- Verified adoption: registry downloads or GitHub stars, not follower counts
- Typosquat distance against the 150 most-installed MCP packages
- Injection markers scanned in the package description
Heuristic, not a guarantee. For verified agent credentials and revocation, see the MarketNow Trust API.
What is @mcpspec/core?
Core engine for [MCPSpec](https://www.npmjs.com/package/mcpspec) — the reliability platform for MCP servers. MCP client, test runner, security scanner (including Tool Poisoning detection), performance Indexed by MarketNow with trust 72/100 (Runs registry code).
How do I install it?
Run $ npx -y @mcpspec/core Installing via npx/uvx/npm install executes arbitrary code from the public registry on your machine. This is the install-risk semantic of the MarketNow catalog — verify the publisher before running it.
What does the trust score mean?
Security-first heuristic over public signals (age, adoption, typosquat distance, injection markers). It is not a popularity ranking and not a guarantee of safety. @mcpspec/core scores 72/100.