registry / suppa-mcp-2 / 1.33.0

suppa-mcp-2@1.33.0

MCP server for the Suppa platform (modern.suppa.me) — Tasks, Docs/Pages, Entities & Schema, Forms, Automations, and file attachments, with multi-tenant Google auth. Node port of PyPI suppa-mcp.

AI Security Review

scanned 1mo ago · by lpm-firewall-ai

Source inspection confirms automatic, guarded repository and AI-agent configuration changes during postinstall. No covert payload, self-dependency chain, secret exfiltration, or unbounded destructive behavior was found, so this warrants a warning rather than a block.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review

Trigger

npm install of the package from a detected Suppa application repository.

Impact

Repository agent behavior and developer workflow can be changed without a separate setup command.

Mechanism

Postinstall invokes a bundled installer that configures repository-level agent and development controls.

AI rationale

Evidence

package.jsonskills/suppa-entity-code/scripts/postinstall.mjsskills/suppa-entity-code/scripts/install-entity-code-guards.mjs.claude/settings.jsonAGENTS.mdCLAUDE.md.githooks/pre-commit.gitlab/suppa-schema-gate.yml

Decision evidence

public snapshot

AI called this Suspicious at 95.0% confidence as Unknown with medium false-positive risk.

Evidence for warning

The package runs a postinstall script automatically.
Postinstall locates the consuming project and runs a bundled installer when it detects Suppa code or dependencies.
The installer adds command hooks to the consuming project's Claude settings and writes managed content to AGENTS.md and CLAUDE.md.
The installer can set Git's hooks path and changes the consumer package.json and GitLab CI snippet.

Evidence against

The mutations are limited to detected Suppa projects and have opt-out, CI, global-install, and own-package guards.
The installed hooks point to this package's bundled schema validator; no remote payload download or credential exfiltration was found.
No runtime dependency on suppa-mcp-2 itself is declared.
Observed network code is for the stated Suppa authentication/API service and an npm version check, not the install hook.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNativeBindings

Source & flagged code

9 flagged

package.jsonView file

•scripts.postinstall = node skills/suppa-entity-code/scripts/postinstall.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node skills/suppa-entity-code/scripts/postinstall.mjs

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

dist/tools/entityCode.jsView file

81try { L82: const mod = await import(pathToFileURL(p).href); L83: return String(mod.BLOCKING_SUMMARY ?? "").trim() || "the house rules in SKILL.md";

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/tools/entityCode.jsView on unpkg · L81

dist/version.jsView file

•Manifest-reachable source resolves another installed package, overwrites its runtime code, and injects package-defined remote behavior. dist/version.js: * node_modules holds; publishing a fix changes nothing until that client is import { mkdirSync, readFileSync, renameSync, writeFileSync } from "node:fs"; const REGISTRY_URL = `https://registry.npmjs.org/${PACKAGE_NAME}/latest`; writeFileSync(tmp, `${JSON.stringify(cache, null, 2)}\n`, "utf-8");

High

Entrypoint Foreign Package Code Overwrite

Manifest-reachable source overwrites another installed package with package-defined remote behavior.

dist/version.jsView on unpkg

dist/auth.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 6

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

dist/auth.js#virtual:normalized:round1View on unpkg

dist/auth.jsView file

•matchType = normalized_sha256 matchedPackage = suppa-mcp-2@1.31.1 matchedPath = dist/auth.js matchedIdentity = npm:c3VwcGEtbWNwLTI:1.31.1 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/auth.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = 3fbfe4bc727bf68d signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = suppa-mcp-2@1.31.1 matchedPath = dist/auth.js matchedIdentity = npm:c3VwcGEtbWNwLTI:1.31.1 similarity = 1.000 shingleOverlap = 25 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

dist/auth.jsView on unpkg

dist/selfcheck.jsView file

•matchType = normalized_sha256 matchedPackage = suppa-mcp-2@1.31.1 matchedPath = dist/selfcheck.js matchedIdentity = npm:c3VwcGEtbWNwLTI:1.31.1 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/selfcheck.jsView on unpkg

dist/tools/files.jsView file

•matchType = normalized_sha256 matchedPackage = suppa-mcp-2@1.31.1 matchedPath = dist/tools/files.js matchedIdentity = npm:c3VwcGEtbWNwLTI:1.31.1 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/tools/files.jsView on unpkg

Source & flagged code

9 flagged · loading source

package.jsonView file

•scripts.postinstall = node skills/suppa-entity-code/scripts/postinstall.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node skills/suppa-entity-code/scripts/postinstall.mjs

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

dist/tools/entityCode.jsView file

81try { L82: const mod = await import(pathToFileURL(p).href); L83: return String(mod.BLOCKING_SUMMARY ?? "").trim() || "the house rules in SKILL.md";

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/tools/entityCode.jsView on unpkg · L81

Findings

7 High5 Medium5 Low

HighInstall Time Lifecycle Scriptspackage.json

HighEntrypoint Foreign Package Code Overwritedist/version.js

HighSemantic Analysis Limiteddist/auth.js#virtual:normalized:round1

HighKnown Malware Source Similaritydist/auth.js

HighKnown Malware Source Similaritydist/selfcheck.js

HighKnown Malware Source Similaritydist/tools/files.js

HighKnown Malware Source Fingerprint Signaturedist/auth.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumDynamic Requiredist/tools/entityCode.js

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

Affected versions and remediation

This report applies to suppa-mcp-2@1.33.0.

See all versions of suppa-mcp-2 for other recorded verdicts.

Review the evidence and your use of suppa-mcp-2@1.33.0 before allowing it. Restrict the permissions described in this report.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.

Evidence last updated: 2026-09-11 13:15:00.084Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.