registry / AI-agent control-surface risk / suppa-mcp-2
suppa-mcp-2
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.
This report shows the evidence for suppa-mcp-2@1.43.0. 20 of 41 known versions are blocked or flagged. The newest version, 1.43.5, is flagged. See all versions.
AI Security Review
scanned 3d ago · by lpm-firewall-aiSource confirms that npm postinstall can automatically alter Claude Code settings and agent instruction files in qualifying consumer projects without affirmative consent. The scoped trigger and opt-out do not remove the verified control-surface mutation.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source
Trigger
Installing the package with npm in a qualifying project, unless a skip condition or opt-out applies.
Impact
Changes agent behavior in the consuming project by adding hooks around file edits and turn completion, and by installing agent instructions.
Mechanism
The postinstall script invokes an installer that writes project-level Claude Code hooks and AGENTS.md or CLAUDE.md content.
Policy narrative
On qualifying npm installs, the postinstall hook runs the package's installer without an affirmative consent step. The installer modifies project-level Claude Code hooks and agent instruction files, changing how agents handle schema edits and turn completion. This is an unconsented postinstall change to a consumer agent control surface.
AI rationale
Source confirms that npm postinstall can automatically alter Claude Code settings and agent instruction files in qualifying consumer projects without affirmative consent. The scoped trigger and opt-out do not remove the verified control-surface mutation.
Evidence
package.jsonskills/suppa-entity-code/scripts/postinstall.mjsskills/suppa-entity-code/scripts/install-entity-code-guards.mjs.claude/settings.jsonAGENTS.mdCLAUDE.md
Decision evidence
public snapshotAI identified this as a dangerous AI-agent capability at 98.0% confidence with low false-positive risk.
Evidence for policy risk
- package.json runs the guard installer from its postinstall hook.
- During npm installation, the hook automatically invokes the installer for a project with Suppa schema code or an @suppa dependency; it has opt-out and environment skips, but no affirmative consent check.
- The installer adds Claude Code hooks for file writes and turn completion, and adds managed sections to AGENTS.md or CLAUDE.md.
- The installer runs these changes directly when invoked, including from the postinstall hook.
Evidence against
- The hook limits the change to projects it identifies as using Suppa schema code and skips CI, global installs, the package's own install, and installs with its opt-out set. Those scope limits do not require affirmative consent for the configuration changes.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetwork
HighEntropyStrings
Source & flagged code
9 flagged · loading sourcepackage.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 unpkgskills/suppa-form-v2/scripts/vue-compiler-diagnostics.mjsView file
9`,-1),e.hoists.length)){let f=[At,Ct,Xe,Rt,Cn].filter(h=>p.includes(h)).map(Wn).join(", ");i(`const { ${f} } = _Vue
L10: `,-1)}Ni(e.hoists,t),r(),i("return ")}function Et(e,t,{helper:n,push:s,newline:i,isTS:r}){let o=n(t==="filter"?Pt:t==="component"?Dt:Lt);for(let a=0;a<e.length;a++){let l=e[a],c=l....
L11: /*! Bundled license information:
Low
Findings
5 High5 Medium7 Low
HighInstall Time Lifecycle Scriptspackage.json
HighSandbox Evasion Gated Capabilitydist/config.js
HighSemantic Analysis Limiteddist/selfcheck.js#virtual:normalized:round1
HighKnown Malware Source Similaritydist/selfcheck.js
HighPrevious Version Dangerous Deltaskills/suppa-entity-code/scripts/validate-suppa-schema.mjs
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumDynamic Requiredist/tools/entityCode.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowNon Install Lifecycle Scripts
LowScripts Present
LowEvalskills/suppa-form-v2/scripts/vue-compiler-diagnostics.mjs
Affected versions and remediation
This report applies to suppa-mcp-2@1.43.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing suppa-mcp-2@1.43.0. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.
Versions
41 known versions1.43.5latestSuspiciousAgent extension lifecycle riskWarnPublishedOct 22, 2026, 3:27 PM1.43.3SuspiciousAgent extension lifecycle riskWarnPublishedOct 21, 2026, 6:57 AM1.43.2SuspiciousAgent extension lifecycle riskWarnPublishedOct 20, 2026, 9:20 AM1.43.0shownMaliciousSoft block: AI-agent control surfaceBlockPublishedOct 20, 2026, 8:02 AM