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slim-mcp

joncik91 Scanned 11d ago

MCP proxy that gives agents their context window back. Schema compression, lazy loading, response caching.

npm ↗
C
74.8 / 100

Versions

0.3.1latest
Mar 31, 2026
0.3.0
Mar 30, 2026
0.2.0
Mar 30, 2026
0.1.1
Mar 30, 2026
0.1.0
Mar 30, 2026
PermissionsTool SafetyAuthAnnotationsCode QualityStabilitySpecVuln HistoryAuthorTransparencyCommunity

Tools 2

read_file
annotations: none low

desc

${prefix}_${i}
annotations: none low

Mock tool #${i}: ${prefix.replace(

Permissions 4

network medium
Server uses network capabilities via: fetch()
filesystem low
Server uses filesystem capabilities via: fs, path
shell high
Server uses shell capabilities via: child_process, spawn()
env_vars low
Server uses env_vars capabilities via: process.env

Scan Findings 20

low
Tool 'read_file' has no annotations annotation_checker · 100%
low
Tool '${prefix}_${i}' has no annotations annotation_checker · 100%
medium
OAuth implementation without PKCE auth_checker · 75%
info
Sandbox failed to start for behavioral verification behavioral_verifier · 100%
medium
Vulnerable dependency: @modelcontextprotocol/sdk@1.28.0 (GHSA-6qxp-vccf-f47h) dependency_analyzer · 95%
medium
Vulnerable dependency: @anthropic-ai/sdk@0.80.0 (GHSA-5474-4w2j-mq4c) dependency_analyzer · 95%
medium
Vulnerable dependency: @anthropic-ai/sdk@0.80.0 (GHSA-p7fg-763f-g4gf) dependency_analyzer · 95%
medium
Vulnerable dependency: vitest@4.1.2 (GHSA-82fw-gwwq-j7x9) dependency_analyzer · 95%
info
package.json metadata manifest_parser · 100%
info
Tool: read_file manifest_parser · 90%
info
Tool: ${prefix}_${i} manifest_parser · 85%
info
Transport: stdio manifest_parser · 90%
info
Required env vars (5) manifest_parser · 80%
info
Sandbox failed to start for output poisoning scan output_poisoning · 100%
medium
Permission: network access detected permission_analyzer · 70%
low
Permission: filesystem access detected permission_analyzer · 90%
high
Permission: shell access detected permission_analyzer · 95%
low
Permission: env_vars access detected permission_analyzer · 90%
info
SBOM generated: 203 components sbom_generator · 100%
medium
No build provenance detected (SLSA L0) slsa_assessor · 90%