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peaks-loop@4.0.0-beta.25: AI-agent policy block | LPM Firewall

registry / peaks-loop / 4.0.0-beta.25

peaks-loop@4.0.0-beta.25

Loop Engineering CLI — workflow primitive / loop guards / evaluators / slice orchestration

AI Security Review

scanned 4h ago · by lpm-firewall-ai

LPM blocks this version under the AI-agent control-surface policy. Installing the package automatically modifies broad, foreign AI-agent control surfaces and can trigger a project upgrade. This occurs without an explicit package command.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

npm postinstall

Impact

Injected skills and agent prompts can influence multiple installed AI coding tools; the upgrade can modify a detected project.

Mechanism

cross-platform AI-agent skill/agent/config installation plus automatic CLI upgrade

Policy narrative

On npm installation, the postinstall script automatically installs package-controlled skills across multiple AI-agent home directories, writes agent prompts to Claude's agent loader, and creates user/project configuration. It also detects prior project state and spawns an automatic upgrade. These are unconsented install-time mutations of broad foreign AI-agent control surfaces.

Rationale

The postinstall behavior directly meets the blocking policy for unconsented mutation of foreign/broad AI-agent control surfaces. Opt-out flags do not make the default installation consensual.

Evidence

package.jsonscripts/install-skills.mjsagents/karpathy-reviewer.mdskills/**output-styles/**~/.claude/skills~/.codex/skills~/.cursor/skills~/.trae/skills~/.claude/agents~/.peaks/config.json

Source & flagged code

12 flagged · loading source

package.jsonView file

•scripts.postinstall = node ./scripts/install-skills.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

dist/shared/process.jsView file

1import { execFile } from 'node:child_process'; L2: export async function execCommand(command, args, options) {

High

Child Process

Package source references child process execution.

dist/shared/process.jsView on unpkg · L1

dist/services/upgrade/upgrade-service.jsView file

182// npm install postinstall creates `peaks` → `peaks.sh` on L183: // Windows). cmd.exe (the default Windows shell) cannot run L184: // `.sh` scripts directly, so the shim fails with "unknown

High

Shell

Package source references shell execution.

dist/services/upgrade/upgrade-service.jsView on unpkg · L182

dist/cli/commands/loop-eval-commands.jsView file

478// eslint-disable-next-line @typescript-eslint/no-var-requires L479: const fs = require('node:fs'); L480: let entries;

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/cli/commands/loop-eval-commands.jsView on unpkg · L478

dist/services/code/job-shape-decision.jsView file

92try { L93: parsed = JSON.parse(raw); L94: }

Low

Weak Crypto

Package source references weak cryptographic algorithms.

dist/services/code/job-shape-decision.jsView on unpkg · L92

scripts/install-skills.mjsView file

1Install-time AI-agent control hijack evidence: L1: #!/usr/bin/env node L2: import { closeSync, constants, existsSync, fchmodSync, fstatSync, lstatSync, mkdirSync, openSync, readFileSync, readlinkSync, realpathSync, readdirSync, renameSync, symlinkSync, un... L3: import { spawnSync } from 'node:child_process'; ... L285: fchmodSync(fd, 0o600); L286: writeFileSync(fd, content, 'utf8'); L287: const writeFd = fd; ... L314: fchmodSync(fd, 0o600); L315: writeFileSync(fd, content, 'utf8'); L316: const writeFd = fd; ... L366: * cannot import the TS service at runtime. The dispatch: L367: * - Look for `.claude`, `.trae`, `.codex`, `.cursor`, `.qoder`, L368: * `.tongyi-lingma` in the project root in that insertion order Payload evidence from schemas/mcp-install-spec.schema.json: L1: { L2: "$sch

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

scripts/install-skills.mjsView on unpkg · L1

dist/cli/commands/playwright-commands.jsView file

27* The CLI does NOT bundle `playwright-mcp`; it shells out to L28: * `npx playwright-mcp@latest` (G22 / NG3). peaks-loop is the lifecycle L29: * orchestrator, not the install medium. ... L31: import { createHash } from 'node:crypto'; L32: import { spawn } from 'node:child_process'; L33: import { existsSync, mkdirSync, readFileSync, writeFileSync, readdirSync, unlinkSync } from 'node:fs';

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

dist/cli/commands/playwright-commands.jsView on unpkg · L27

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.2 matchedPath = dist/cli/commands/playwright-commands.js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.2 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/cli/commands/playwright-commands.jsView on unpkg

dist/services/code-review/ocr-service.jsView file

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.2 matchedPath = dist/services/code-review/ocr-service.js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.2 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/services/code-review/ocr-service.jsView on unpkg

dist/services/artifacts/artifact-service.jsView file

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.2 matchedPath = [redacted]-service.js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.2 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/services/artifacts/artifact-service.jsView on unpkg

dist/services/runtime/vendors/codex.jsView file

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.2 matchedPath = [redacted].js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.2 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/services/runtime/vendors/codex.jsView on unpkg

dist/services/runtime/vendors/copilot.jsView file

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.2 matchedPath = [redacted].js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.2 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/services/runtime/vendors/copilot.jsView on unpkg

Source & flagged code

12 flagged

package.jsonView file

Lines 72-112json

72 }

73 },

74 "devDependencies": {

75 "@changesets/cli": "2.31.1",

76 "@jridgewell/trace-mapping": "^0.3.31",

77 "@stryker-mutator/core": "^8.7.1",

78 "@stryker-mutator/typescript-checker": "^8.7.1",

79 "@stryker-mutator/vitest-runner": "^9.6.1",

80 "@types/better-sqlite3": "^7.6.13",

81 "@types/node": "^22.10.2",

82 "@vitest/coverage-v8": "^4.1.10",

83 "tsx": "^4.19.2",

84 "typescript": "^5.7.2",

85 "vite": "^6.0.0",

86 "vitest": "^4.1.0",

87 "zod-to-json-schema": "^3.25.2"

88 },

89 "scripts": {

90 "build": "node ./scripts/sync-version.mjs && node ./scripts/clean-dist.mjs && pnpm -r --filter \"./packages/*\" run build && tsc -p tsconfig.build.json && node ./scripts/copy-templates.mjs",

91 "prepublish": "node ./scripts/sync-version.mjs",

92 "postinstall": "node ./scripts/install-skills.mjs",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L92

93 "predev": "node ./scripts/sync-version.mjs",

94 "dev": "tsx src/cli/index.ts",

95 "dev:watch": "node ./scripts/watch.mjs",

96 "pretest": "node ./scripts/sync-version.mjs",

97 "test": "vitest run tests/unit/cli-program.core.test.ts tests/unit/cli-program.stateful.test.ts tests/unit/cli-program.workflow.test.ts tests/unit/cli-program.workflow-cli.test.ts tests/unit/cli-program.workspace.test.ts tests/unit/cli",

98 "test:full": "vitest run",

99 "test:fast": "vitest run --maxWorkers=8 -t \"^((?!@slow|@integration|@replay).)*$\" tests/unit",

100 "test:dev": "vitest run tests/unit",

101 "test:dev:cli": "vitest run tests/unit/cli-program.core.test.ts tests/unit/cli-program.stateful.test.ts tests/unit/cli-program.workflow.test.ts tests/unit/cli-program.workflow-cli.test.ts tests/unit/cli-program.workspace.test.ts tests/unit/cli",

102 "test:unit": "vitest run tests/unit",

103 "test:integration": "vitest run tests/integration",

104 "test:cli": "vitest run tests/unit/cli-program.core.test.ts tests/unit/cli-program.stateful.test.ts tests/unit/cli-program.workflow.test.ts tests/unit/cli-program.workflow-cli.test.ts tests/unit/cli-program.workspace.test.ts tests/unit/cli",

105 "test:workflow": "vitest run tests/unit/cli-program.workflow.test.ts tests/unit/cli-program.workflow-cli.test.ts tests/unit/workflow-autonomous-resume-validation.test.ts tests/unit/workflow-autonomous-service.test.ts tests/unit/workflow-router-service.test.ts tests/unit/skill-browser-workflow.test.ts tests/unit/services/workflow",

106 "test:audit:silent-warning": "node ./scripts/lint/silent-warning-detector.mjs",

107 "test:ci": "node ./scripts/sync-version.mjs && node ./scripts/lint/silent-warning-detector.mjs && vitest run --coverage",

108 "test:changed": "node scripts/test-changed.mjs",

109 "lint:silent-warning": "node ./scripts/lint/silent-warning-detector.mjs",

110 "test:race": "vitest run --no-file-parallelism packages/peaks-loop-shared-channel/tests/shared-channel.test.ts tests/unit/dispatch-record-writer.test.ts tests/unit/services/retrospective/heartbeat.test.ts tests/unit/cli/commands/share-commands.test.ts",

111 "test:replay": "node scripts/fixture-capture-setup.mjs && vitest run tests/unit/replay tests/unit/fixture",

112 "fixture:capture-setup": "node scripts/fixture-capture-setup.mjs",

dist/shared/process.jsView file

Lines 1-13javascript

1import { execFile } from 'node:child_process';

2export async function execCommand(command, args, options) {

High

Child Process

Package source references child process execution.

dist/shared/process.jsView on unpkg · L1

3

dist/services/upgrade/upgrade-service.jsView file

Lines 162-202javascript

162}

163function read1xVersion(cwd) {

164 const home = process.env['HOME'] ?? process.env['USERPROFILE'] ?? '';

dist/cli/commands/loop-eval-commands.jsView file

Lines 458-498javascript

458 cycles: result.cycles,

459 finalReport: result.finalReport,

460 finalReportCode,

461 summary: result.summary

462 }, nextActionsForCode(result.code, r2, sid, result.summary)), options.json);

463 process.exitCode = exitCode;

464

dist/services/code/job-shape-decision.jsView file

Lines 72-112javascript

72 const path = decisionPath(projectRoot, sessionId);

73 if (!existsSync(path)) {

74 throw new JobShapeDecisionError({

75 code:

scripts/install-skills.mjsView file

Lines 1-21javascript

1#!/usr/bin/env node

2import { closeSync, constants, existsSync, fchmodSync, fstatSync, lstatSync, mkdirSync, openSync, readFileSync, readlinkSync, realpathSync, readdirSync, renameSync, symlinkSync, unlinkSync, writeFileSync } from 'node:fs';

3import { spawnSync } from 'node:child_process';

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

scripts/install-skills.mjsView on unpkg · L1

4import { createHash, randomUUID }

dist/cli/commands/playwright-commands.jsView file

Lines 7-47javascript

7 * dir. This command:

8 *

9 * 1. `peaks playwright start [--port N] [--browser <chromium|firefox|webkit>]`

10 * Allocates a unique port (default 8931; walks 8931→8949

dist/services/code-review/ocr-service.jsView file

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.2 matchedPath = dist/services/code-review/ocr-service.js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.2 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/services/code-review/ocr-service.jsView on unpkg

dist/services/artifacts/artifact-service.jsView file

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.2 matchedPath = [redacted]-service.js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.2 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/services/artifacts/artifact-service.jsView on unpkg

dist/services/runtime/vendors/codex.jsView file

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.2 matchedPath = [redacted].js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.2 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/services/runtime/vendors/codex.jsView on unpkg

dist/services/runtime/vendors/copilot.jsView file

•matchType = normalized_sha256 matchedPackage = peaks-loop@4.0.2 matchedPath = [redacted].js matchedIdentity = npm:cGVha3MtbG9vcA:4.0.2 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/services/runtime/vendors/copilot.jsView on unpkg