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@avidian/mcp-slack: Clean npm security report (Allow) | LPM Firewall

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Threat feed How it works Policy

Threat feed How it works Policy

Passed — safe to install

No malicious behavior detected. 11 low-signal pattern(s) reviewed.

View on npm All versions

registry / @avidian/mcp-slack / 0.5.0

@avidian/mcp-slack@0.5.0

TOON-first Model Context Protocol server for Slack, with dual-token auth and both stdio and Streamable HTTP transports.

AI Security Review

scanned 18d ago · by lpm-firewall-ai

No confirmed malicious attack surface. Runtime exposes a user-configured MCP Slack server with stdio or authenticated HTTP transport; Slack API access and local file upload are documented, user-invoked capabilities.

Static reason

One or more suspicious static signals were detected.

Trigger

User runs mcp-slack CLI or imports library and invokes MCP tools.

Impact

Authorized Slack read/write/search/file operations according to configured tokens and tool calls.

Mechanism

Slack MCP server using configured Slack tokens

Rationale

Source inspection shows a package-aligned MCP server for Slack with no install-time execution, persistence, credential harvesting, or unconsented AI-agent control-surface mutation. The scanner's command execution and eval findings come from bundled dependencies, while outbound requests are Slack API/file-download behavior tied to explicit tool calls.

Evidence

package.jsondist/lib.cjsdist/index.jsREADME.md

Network endpoints1

slack.com/api/

Decision evidence

public snapshot

AI called this Clean at 93.0% confidence as Benign with low false-positive risk.

Evidence for block

© 2026 LPM Firewall

Product

Threat feed How it works Policy

LPM

LPM.dev Registry

Evidence against

package.json has no install/postinstall lifecycle hooks; prepublishOnly only builds before publishing.
dist/lib.cjs loadConfig reads only Slack/Auth-related env vars and requires a Slack token.
dist/lib.cjs creates Slack WebClient instances and registers MCP tools for Slack API actions.
dist/lib.cjs network use is Slack API/client-aligned plus authenticated Slack file download URLs.
dist/index.js child_process/eval hits are bundled dependency code, not package logic.
README.md documents HTTP bearer auth and warns upload_file can read local file_path.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsEvalFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 4 file(s), 2.09 MB of source, external domains: docs.slack.dev, github.com, json-schema.org, raw.githubusercontent.com, slack.com

Source & flagged code

4 flagged · loading source

dist/index.jsView file

31544import { EventEmitter } from "node:events"; L31545: import childProcess from "node:child_process"; L31546: import path from "node:path";

High

Child Process

Package source references child process execution.

dist/index.jsView on unpkg · L31544

148prepack: "npm run build", L149: test: "npm run build && bash -c 'node --test-reporter=spec --test-reporter-destination=stdout --test-reporter=junit --test-reporter-destination=test-results.xml --import tsx --test... L150: "test:coverage": "npm run build && node --experimental-test-coverage --test-reporter=spec --test-reporter-destination=stdout --test-reporter=lcov --test-reporter-destination=lcov.i...

High

Shell

Package source references shell execution.

dist/index.jsView on unpkg · L148

148prepack: "npm run build", L149: test: "npm run build && bash -c 'node --test-reporter=spec --test-reporter-destination=stdout --test-reporter=junit --test-reporter-destination=test-results.xml --import tsx --test... L150: "test:coverage": "npm run build && node --experimental-test-coverage --test-reporter=spec --test-reporter-destination=stdout --test-reporter=lcov --test-reporter-destination=lcov.i... ... L160: "@types/retry": "0.12.0", L161: axios: "^1.16.0", L162: eventemitter3: "^5.0.1", L163: "form-data": "^4.0.4", L164: "is-electron": "2.2.2",

High

Command Output Exfiltration

Source combines command execution, command-output handling, and outbound requests; review data flow before blocking.

dist/index.jsView on unpkg · L148

22266sourceCode = this.opts.code.process(sourceCode, sch); L22267: const makeValidate = new Function(`${names_1.default.self}`, `${names_1.default.scope}`, sourceCode); L22268: const validate = makeValidate(this, this.scope.get());

Low

Eval

Package source references a known benign dynamic code generation pattern.

dist/index.jsView on unpkg · L22266

Findings

3 High2 Medium6 Low

HighChild Processdist/index.js

HighShelldist/index.js

HighCommand Output Exfiltrationdist/index.js

MediumNetwork

MediumEnvironment Vars

LowNon Install Lifecycle Scripts

LowScripts Present

LowEvaldist/index.js

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

93%Pass

Verdict confidence

IntentBenign

False-positive riskLow

Review stagesource_first_review

Firewall policyNo policy match

Package metadata

npm

Authoravidianity

Maintainersavidian

Version0.5.0

PublishedJul 3, 2026

LicenseMIT

Dependencies6

Integrityverified

Package size408 KB

Files9

Keywordsmcpmodel-context-protocolslacktoonaillm

LinksRepository Homepage Issues

Runtime surface

package.json

Entrypointsmain → ./dist/lib.cjstypes → ./dist/lib.d.tsexports mapbin → mcp-slack

Runtimenode >=20

Artifact2.12 MB · 9 files1 signature(s) · provenance

Install lifecycleprepublishOnly

Behavioral surface

ChildProcessCryptoEnvironmentVarsEvalFilesystemNetworkShellHighEntropyStringsUrlStringsManifest: clean

LPM CLI

Source & flagged code

4 flagged

dist/index.jsView file

31544import { EventEmitter } from "node:events"; L31545: import childProcess from "node:child_process"; L31546: import path from "node:path";

High

Child Process

Package source references child process execution.

dist/index.jsView on unpkg · L31544

148prepack: "npm run build", L149: test: "npm run build && bash -c 'node --test-reporter=spec --test-reporter-destination=stdout --test-reporter=junit --test-reporter-destination=test-results.xml --import tsx --test... L150: "test:coverage": "npm run build && node --experimental-test-coverage --test-reporter=spec --test-reporter-destination=stdout --test-reporter=lcov --test-reporter-destination=lcov.i...

High

Shell

Package source references shell execution.

dist/index.jsView on unpkg · L148

148prepack: "npm run build", L149: test: "npm run build && bash -c 'node --test-reporter=spec --test-reporter-destination=stdout --test-reporter=junit --test-reporter-destination=test-results.xml --import tsx --test... L150: "test:coverage": "npm run build && node --experimental-test-coverage --test-reporter=spec --test-reporter-destination=stdout --test-reporter=lcov --test-reporter-destination=lcov.i... ... L160: "@types/retry": "0.12.0", L161: axios: "^1.16.0", L162: eventemitter3: "^5.0.1", L163: "form-data": "^4.0.4", L164: "is-electron": "2.2.2",

High

Command Output Exfiltration

Source combines command execution, command-output handling, and outbound requests; review data flow before blocking.

dist/index.jsView on unpkg · L148

22266sourceCode = this.opts.code.process(sourceCode, sch); L22267: const makeValidate = new Function(`${names_1.default.self}`, `${names_1.default.scope}`, sourceCode); L22268: const validate = makeValidate(this, this.scope.get());

Low

Eval

Package source references a known benign dynamic code generation pattern.

dist/index.jsView on unpkg · L22266