frontmcp-testing

75 / 100 · Review before installing

Check before installing. Some of what it can do is expected: a coding skill usually runs build and test commands.

By agentfront/frontmcp (GitHub) · coding · 148 stars · scanned at commit cadd045

Use for anything about testing FrontMCP servers: writing or running unit, integration, and E2E tests and reaching the 95%+ coverage bar. Covers Jest setup and coverage gating; unit-testing a ToolContext execute() with mock context, inputs, and Zod schema validation; testing resources and prompts; in-memory testing via create() and connectOpenAI / connectClaude (no HTTP); full MCP-protocol E2E over HTTP with McpTestClient and TestServer; authenticated tests with TestTokenFactory, MockOAuthServer…

Works with any agent that supports SKILL.md skills.

What this skill can do

Downloads and installs other software

The author does not mention this.

Found in 12 places.

libs/skills/catalog/frontmcp-testing/examples/replay-calls/record-and-replay.md, line 45command: 'npx tsx src/main.ts',
libs/skills/catalog/frontmcp-testing/examples/replay-calls/record-and-replay.md, line 55const server = await TestServer.start({ command: 'npx tsx src/main.ts', port: 0 });
libs/skills/catalog/frontmcp-testing/examples/test-auth/role-based-access-test.md, line 35command: 'npx tsx src/main.ts',

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libs/skills/catalog/frontmcp-testing/examples/test-auth/token-factory-test.md, line 34command: 'npx tsx src/main.ts',
libs/skills/catalog/frontmcp-testing/examples/test-e2e-handler/basic-e2e-test.md, line 34command: 'npx tsx src/main.ts',
libs/skills/catalog/frontmcp-testing/examples/test-e2e-handler/manual-client-with-transport.md, line 31command: 'npx tsx src/main.ts',
libs/skills/catalog/frontmcp-testing/examples/test-e2e-handler/tool-call-and-error-e2e.md, line 35command: 'npx tsx src/main.ts',
libs/skills/catalog/frontmcp-testing/references/replay-calls.md, line 96It starts the project server the way the test fixtures do: `TestServer` runs `npx tsx <entry>` (the `entry` of `frontmcp.config`, else `package.json` `main`, el
libs/skills/catalog/frontmcp-testing/references/setup-testing.md, line 313> **Note:** `TestServer.start({ command })` accepts any command that boots your server — your `dev` npm script, the built artifact (e.g. `node dist/main.js`), o
libs/skills/catalog/frontmcp-testing/references/setup-testing.md, line 328command: 'npx tsx src/main.ts',
libs/skills/catalog/frontmcp-testing/references/test-auth.md, line 25command: 'npx tsx src/main.ts',
libs/skills/catalog/frontmcp-testing/references/test-e2e-handler.md, line 28command: 'npx tsx src/main.ts',

Connects to the internet

The author does not mention this.

Found in 4 places.

libs/skills/catalog/frontmcp-testing/examples/test-auth/oauth-flow-test.md, line 56const res = await fetch(mockOAuth.info.jwksUrl);
libs/skills/catalog/frontmcp-testing/examples/test-cli-binary/binary-startup-test.md, line 58const res = await fetch(`http://localhost:${port}/health`);
libs/skills/catalog/frontmcp-testing/references/test-auth.md, line 133const jwks = await fetch(mockOAuth.info.jwksUrl).then((r) => r.json());

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libs/skills/catalog/frontmcp-testing/references/test-cli-binary.md, line 31const res = await fetch('http://localhost:3001/health');

Runs commands on your computer

The author does not mention this. Expected for a coding skill.

Found in 6 places.

libs/skills/catalog/frontmcp-testing/examples/test-browser-build/browser-bundle-validation.md, line 37expect(bundle).not.toContain("require('child_process')");
libs/skills/catalog/frontmcp-testing/examples/test-cli-binary/binary-startup-test.md, line 23import { spawn, execSync } from 'child_process';
libs/skills/catalog/frontmcp-testing/examples/test-cli-binary/binary-startup-test.md, line 30const output = execSync(`${BINARY} --help`, { encoding: 'utf-8' });

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libs/skills/catalog/frontmcp-testing/references/test-browser-build.md, line 26expect(bundle).not.toContain("require('child_process')");
libs/skills/catalog/frontmcp-testing/references/test-cli-binary.md, line 11import { execSync, spawn } from 'child_process';
libs/skills/catalog/frontmcp-testing/references/test-cli-binary.md, line 38const output = execSync(`${BINARY} --help`, { encoding: 'utf-8' });

Safer alternatives

Low-risk skills in the same category (coding) that look related. Check that one does what you need.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'frontmcp-testing' ] || [ -L ~/.agents/skills/'frontmcp-testing' ]; then echo 'A skill folder named frontmcp-testing already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/agentfront/frontmcp' "$d" && git -C "$d" checkout --quiet 'cadd045f5f9f5a3260c23264ae771b4a1ef4de49' -- 'libs/skills/catalog/frontmcp-testing' && mkdir -p ~/.agents/skills && cp -R "$d"/'libs/skills/catalog/frontmcp-testing' ~/.agents/skills/'frontmcp-testing' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'frontmcp-testing' ~/.claude/skills/'frontmcp-testing' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history

Date	Version	Score
2026-11-09	`cadd045`	75
2026-11-07	`4c99d49`	75