MCP Client (modelcontextprotocol) MCP Server
@modelcontextprotocol/client
npm
v2.0.0
Official
Published by Model Context Protocol — an official vendor package. A brand name in a package name proves nothing; this one is verified by npm scope ownership or publish provenance.
Model Context Protocol implementation for TypeScript - Client package
The grade answers one question — how safe is this server for you to adopt — so it is computed in two auditable stages. Nothing below is an opinion or an LLM's guess; every line is a real term the deterministic engine applied, and the same input always yields the same number.
1. Threat score — 100 − 0 = 100. What the published surface and source actually contain:
The deterministic scan raised no scored threat in the surface it inspected — the threat score stayed at 100. Capability observations and advisory notes are recorded but never lower it.
2. Client adoption risk — 100 − 6 = 94. Three small, subtract-only factors that reflect your risk in adopting it — a clean scan proves less on a powerful, unverified or barely-inspectable package, so the grade says so plainly:
| Points | Adoption-risk factor |
|---|---|
| −6 | capability blast radius (high) — client exposure if the model is manipulated |
Capability observations and info notes are shown under Findings but never scored.
Open any row's finding below for the file, line and evidence behind a deduction.
Findings 3
high Dynamic code execution in server code (dist/ajvProvider-1b6pVpkg.cjs)MTC-SRC-001
In the server's implementation (`dist/ajvProvider-1b6pVpkg.cjs:2594`): Evaluating strings as code is the most direct RCE primitive; if any tool input reaches it, the server executes attacker-chosen code. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: h); const validate = new Function(`${names_1.default.self}`, `${names_1.default.scope}`, sourceCode)(this, this.scope
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/ajvProvider-1b6pVpkg.cjs
high Dynamic code execution in server code (dist/ajvProvider-97rDpkRx.mjs)MTC-SRC-001
In the server's implementation (`dist/ajvProvider-97rDpkRx.mjs:2594`): Evaluating strings as code is the most direct RCE primitive; if any tool input reaches it, the server executes attacker-chosen code. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: h); const validate = new Function(`${names_1.default.self}`, `${names_1.default.scope}`, sourceCode)(this, this.scope
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/ajvProvider-97rDpkRx.mjs
high Shell/command execution in server code (dist/stdio.mjs)MTC-SRC-002
In the server's implementation (`dist/stdio.mjs:68`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: => { this._process = spawn(this._serverParams.command, this._serverParams.args ?? [], { env: { ...getDefault
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/stdio.mjs
Tools 2
Each tool and what it can reach — statically extracted from the published source.
deployno sensitive capabilitygreetno sensitive capability
What this scan could not see
- Tools were statically extracted from the published source (2 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, scan the running server: --command "npx -y <package>".
Versions 2
Scan history per published version. The engine is deterministic — the same version always yields the same score, so a changed score means the package itself changed.
| Version | Score | Findings | Engine | Scanned |
|---|---|---|---|---|
v2.0.0 latest |
A 94/100 | 3 | 1.13.0 | 2026-09-07 |
v2.0.0-beta.5 |
A 94/100 | 3 | 1.12.1 | 2026-07-27 |
Embed this score
Show this server's live Trust Score in your README, docs or website. The badge is served straight from the registry and updates automatically after every rescan — no API key needed. It links back to this page, so anyone who sees the grade can also read the findings behind it instead of taking a number on faith.
Verify this score yourself
The score above is reproducible: the same package version always yields the same result. Run it locally or over the free API — no account, no LLM, fully deterministic.
npx mcptrustchecker scan @modelcontextprotocol/client --onlineOther implementations of MCP Client 1
Independent packages implementing the same tool, scanned with the same engine. Compare all 2 side by side →
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