SpiceMCP (oniondas/SpiceMCP) is an MCP server listed on the M8ven Trust Index. It scores 89 out of 100, grade B. It declares 26 tools. The publisher has proved control of what we score (Verified Publisher). It is connected through the M8ven GitHub App, so the listing is re-checked on every push.

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B
Emerging
89/100
1 day ago

SpiceMCP

MCP server for LTspice circuit simulation and optimization. It manages optimization state, evaluates metrics from .meas directives, and supports schematic generation and parameter tuning.

→ oniondas/SpiceMCP· listed on glama

Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

Code Verified⚡ Live Monitored

Monitored 11 days · every push re-verified

Who stands behind it

gmail.com (@oniondas) · Verified Publisher

Source: Glama

Install from

Glama

M8ven verifies MCPs across every public registry — install directly from whichever one you prefer.

// key findings
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
Are you the publisher? Confirm or correct these findings.
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configSPICEMCP_PROJECTState lands in $/.ltspice-mcp/:
configLTSPICE_SYM
configLTSPICE_EXEProgram Files\LTC\LTspiceXVII\XVIIx64.exe, …). Override with .
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

26/26 tools missing one or more hints — simulate_netlist (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); check_ltspice (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); simulate_sweep (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +23 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

License file

No license file

Add a LICENSE file (MIT, Apache-2.0, etc.).

Tool test coverage

Only 5/26 tools referenced in tests (19%)

Write tests that reference each tool by name so every tool has at least one test.

// embed badge in your README
[![M8ven Score](https://m8ven.ai/badge/mcp/oniondas/spicemcp)](https://m8ven.ai/mcp/oniondas/spicemcp)
Shows your grade and updates automatically. Prefer no grade? Append ?variant=verified to the badge URL.
commit: a36559e20ea069f005f43632f778a1104fede083
code hash: b72c22cdcec348c1cf2afe1d80df100633c8c701e4193710b1e88c0c87a7d8a6
verified: 9/8/2026, 8:39:47 PM
view raw JSON →
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