registry / incur / 0.4.13

incur@0.4.13

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AI Security Review

scanned 3h ago · by lpm-firewall-ai

Review flagged AI-agent configuration or capability changes. This remains warn-only unless evidence shows foreign-agent hijack through preinstall/install/postinstall, hidden persistence, exfiltration, remote code execution, or other concrete malicious behavior.

Static reason

No blocking static signals were detected.

Trigger

User runs `incur mcp add` or `incur skills add`.

Impact

Adds MCP server entries or skills for detected/specified local agents; no confirmed credential exfiltration or malicious payload execution.

Mechanism

Explicit CLI registration and skill-file sync

Rationale

Because agent configuration mutation is explicit and package-aligned rather than install-time or covert, this does not meet the block threshold. It remains a warn-level lifecycle/capability risk under the agent control-surface policy.

Evidence

package.jsondist/bin.jsdist/internal/command.jsdist/SyncMcp.jsdist/SyncSkills.jsdist/internal/agents.jsdist/internal/utils.jsdist/Fetch.jsdist/Openapi.jsdist/McpSource.js~/.config/amp/settings.json~/.agents/skills/<skill>~/.config/agents/skills/<skill>~/.codex/skills/<skill>~/.cursor/skills/<skill>~/.claude/skills/<skill>~/.local/share/incur/<name>.json

Decision evidence

public snapshot

AI called this Suspicious at 86.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

dist/internal/command.js exposes explicit built-ins `mcp add` and `skills add`.
dist/SyncMcp.js runs package-manager `add-mcp` and writes Amp MCP config under the user's home directory.
dist/SyncSkills.js and dist/internal/agents.js copy/symlink SKILL.md files into multiple AI-agent skill directories.
dist/internal/utils.js dynamically imports a user-selected CLI entry for the `gen` command.

Evidence against

package.json has no preinstall/install/postinstall lifecycle scripts.
dist/index.js only re-exports library modules; import has no obvious side effects beyond module loading.
Network use is package-aligned: Fetch/Openapi/McpSource forward user-configured fetch/OpenAPI/MCP requests, not hardcoded exfiltration.
No hardcoded exfiltration endpoints, credential harvesting loop, obfuscated payload, destructive install-time behavior, or persistence found.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 93 file(s), 1.11 MB of source, external domains: api.example.com, custom.example.com, example.com, expressjs.com, json-schema.org, mcp.example.com, mcp.local, pkg.pr.new, prod.example.com, registry.npmjs.org, staging.example.com

Source & flagged code

1 flagged

dist/internal/utils.jsView file

Lines 1-41javascript

1import fs from 'node:fs/promises';

2import path from 'node:path';

3import url from 'node:url';

4import * as Cli from '../Cli.js';

5/**

6 * Dynamically imports a module and extracts its default-exported CLI instance.

7 * Temporarily replaces `process.argv` and `process.exit` to prevent imported

8 * modules that call `.serve()` at the top level from interfering.

9 */

10export async function importCli(input) {

11 const resolved = path.resolve(input);

12 const stat = await fs.stat(resolved);

13 const file = stat.isDirectory() ? await resolveEntry(resolved) : resolved;

14 const href = url.pathToFileURL(file).href;

15 const savedArgv = process.argv;

16 const savedExit = process.exit;

17 const savedWrite = process.stdout.write;

18 process.argv = [savedArgv[0]];

19 process.exit = (() => { });

20 process.stdout.write = (() => true);

21 try {

22 const mod = await import(href);

23 const cli = mod.default;

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/internal/utils.jsView on unpkg · L21

24 if (!cli || !Cli.toCommands.has(cli))

25 throw new Error(`Expected default export to be a \`Cli\` instance: ${input}`);

26 return cli;

27 }

28 finally {

29 process.argv = savedArgv;

30 process.exit = savedExit;

31 process.stdout.write = savedWrite;

32 }

33}

34/** Resolves the CLI entry file from a directory by checking `package.json` `bin`, then falling back to `cli.ts`. */

35async function resolveEntry(dir) {

36 try {

37 const pkg = JSON.parse(await fs.readFile(path.join(dir, 'package.json'), 'utf8'));

38 if (pkg.bin) {

39 const entries = typeof pkg.bin === 'string' ? [pkg.bin] : Object.values(pkg.bin);

40 const src = entries.find((e) => e.endsWith('.ts'));

41 const entry = src ?? entries[0];

Source & flagged code

1 flagged · loading source

dist/internal/utils.jsView file

21try { L22: const mod = await import(href); L23: const cli = mod.default;

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/internal/utils.jsView on unpkg · L21

Findings

3 Medium3 Low

MediumDynamic Requiredist/internal/utils.js

MediumNetwork

MediumEnvironment Vars

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

Source & flagged code

1 flagged

dist/internal/utils.jsView file

Lines 1-41javascript

1import fs from 'node:fs/promises';

2import path from 'node:path';

3import url from 'node:url';

4import * as Cli from '../Cli.js';

5/**

6 * Dynamically imports a module and extracts its default-exported CLI instance.

7 * Temporarily replaces `process.argv` and `process.exit` to prevent imported

8 * modules that call `.serve()` at the top level from interfering.

9 */

10export async function importCli(input) {

11 const resolved = path.resolve(input);

12 const stat = await fs.stat(resolved);

13 const file = stat.isDirectory() ? await resolveEntry(resolved) : resolved;

14 const href = url.pathToFileURL(file).href;

15 const savedArgv = process.argv;

16 const savedExit = process.exit;

17 const savedWrite = process.stdout.write;

18 process.argv = [savedArgv[0]];

19 process.exit = (() => { });

20 process.stdout.write = (() => true);

21 try {

22 const mod = await import(href);

23 const cli = mod.default;

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/internal/utils.jsView on unpkg · L21

24 if (!cli || !Cli.toCommands.has(cli))

25 throw new Error(`Expected default export to be a \`Cli\` instance: ${input}`);

26 return cli;

27 }

28 finally {

29 process.argv = savedArgv;

30 process.exit = savedExit;

31 process.stdout.write = savedWrite;

32 }

33}

34/** Resolves the CLI entry file from a directory by checking `package.json` `bin`, then falling back to `cli.ts`. */

35async function resolveEntry(dir) {

36 try {

37 const pkg = JSON.parse(await fs.readFile(path.join(dir, 'package.json'), 'utf8'));

38 if (pkg.bin) {

39 const entries = typeof pkg.bin === 'string' ? [pkg.bin] : Object.values(pkg.bin);

40 const src = entries.find((e) => e.endsWith('.ts'));

41 const entry = src ?? entries[0];