MCP Sidecar
NPM · MCP-SIDECAR · SCANNED AUG 3
Cross-platform MCP server for managing long-lived background processes from any MCP client
Available components
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score →
Supply Chain Security100
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 0 of 5 dependencies flagged as unhealthy. View diagnostics → Pass
Provenance & Transparency97
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to lsequeiraa/mcp-sidecar). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 62 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability71
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 238 tokens (~39/item across 6 items; 6 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Unverified: 1 category
A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.
Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.
npm · mcp-sidecar
claude mcp add lsequeiraa-mcp-sidecar -- npx -y mcp-sidecar
codex mcp add lsequeiraa-mcp-sidecar -- npx -y mcp-sidecar
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"lsequeiraa-mcp-sidecar": {
"type": "local",
"command": [
"npx",
"-y",
"mcp-sidecar"
],
"enabled": true
}
}
} openclaw mcp add lsequeiraa-mcp-sidecar --command npx --arg -y --arg mcp-sidecar
mcp_servers:
lsequeiraa-mcp-sidecar:
command: "npx"
args: ["-y", "mcp-sidecar"] {
"mcpServers": {
"lsequeiraa-mcp-sidecar": {
"command": "npx",
"args": [
"-y",
"mcp-sidecar"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 2 Aug 26 +15
- Malware scan: unverified → pass ▲ security
- 31 Jul 26 −10
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 30 Jul 26 −18
- Malware scan: pass → unverified ▼ security
- 27 Jul 26 +33
- Tool coverage: unverified → 100 ▲ functional
- First check of Tool coverage: 100 functional
- First check of Schema quality: fail functional
- First check of Schema quality: pass functional
- First check of Schema quality: good functional
- 26 Jul 26 59
First indexed and scored.
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 3 Aug 2026 · Analysed npm/[email protected]
Provenance verified
Ecosystem: npm · Outcome: verified
Reason: verified
- Source repo:
- lsequeiraa/mcp-sidecar
- Certificate issuer:
- https://token.actions.githubusercontent.com
- Certificate SAN:
- https://github.com/lsequeiraa/mcp-sidecar/.github/workflows/release.yml@refs/tags/v0.3.2
- Rekor log index:
- 1699931668
- Predicate type:
- https://slsa.dev/provenance/v1
- Subject digest:
- sha512:27e9d2b290e08035f424a19c1735d67f8263469b3dc00ff60ca5bf27ba6eba79d5714fec6b1994edec5052e9d87136a3150586214ce57dcfff9ebe8be
- Discovery method:
- attestation_endpoint
Dependencies 5 packages
5 packages in the resolved dependency tree.
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.
list ~12
List all managed processes
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
output ~73
Get buffered stdout and stderr of a process
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | Process ID |
| maxBytes | number | — | Max total bytes for stdout+stderr combined (0 = unlimited). Keeps the most recent output. Stderr is prioritized. |
| tail | number | — | Return only the last N lines (0 = all) |
No output schema declared.
No examples provided.
send ~40
Write to a process's stdin
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | Process ID |
| input | string | yes | Text to send (a trailing newline is added automatically) |
No output schema declared.
No examples provided.
start ~58
Spawn a background process
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | yes | Shell command to execute |
| cwd | string | — | Working directory for the process |
| env | object | — | Additional environment variables |
| name | string | — | Human-friendly name for the process |
No output schema declared.
No examples provided.
status ~24
Get detailed state of a single process
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | Process ID |
No output schema declared.
No examples provided.
stop ~31
Terminate a managed process (graceful, then force)
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | Process ID to stop |
No output schema declared.
No examples provided.