Install
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add agentfront/frontmcp --skill frontmcp-configgit clone --depth 1 https://github.com/agentfront/frontmcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/agentfront/frontmcp/frontmcp-config)<a href="https://agentmods.dev/skills/agentfront/frontmcp/frontmcp-config"><img src="https://agentmods.dev/badge/skills/agentfront/frontmcp/frontmcp-config/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/agentfront/frontmcp/frontmcp-config"><img src="https://agentmods.dev/badge/skills/agentfront/frontmcp/frontmcp-config.svg" alt="Reviewed on agentmods" width="80" height="20"></a> Per session 187 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,390 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits How audits are shown
- NVIDIA SkillSpector warn
SkillSpector: 21 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Prompt Injection · line 110 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 185 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 120 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 120 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 155 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 169 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 246 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 169 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 215 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 177 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 223 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 238 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 238 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 246 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Memory Poisoning · line 256 Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.Fix: Implement context-window management that detects and rejects padding or stuffing attempts. Prioritize system instructions over user-injected content.
- medium Prompt Injection · line 256 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 258 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 259 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 215 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 208 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
Origin original No closer match found in the catalogue.
Token cost
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00187 | $0.04390 |
| Opus 5.5 | $0.00075 | $0.01756 |
| Sonnet 5.5 | $0.00037 | $0.00878 |
| Haiku 4.5 | $0.00019 | $0.00439 |
Security
Grade A, and why
frontmcp-config scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- [ ] CORS allows expected origins (test with browser or curl) libs/skills/catalog/frontmcp-config/SKILL.md · 269 lines
How it starts
The opening of the file, as written. The whole thing — 269 lines — stays where its author put it; the contents beside it link to each section on GitHub.
FrontMCP Configuration Router
Entry point for configuring FrontMCP servers. This skill helps you find the right configuration reference (under references/) based on what aspect of your server you need to set up.
When to Use This Skill
Must Use
- Setting up a new server and need to understand which configuration options exist
- Deciding between authentication modes, transport protocols, or storage backends
- Planning server configuration across transport, auth, throttling, and storage
Recommended
- Looking up which reference covers a specific config option (CORS, rate limits, session TTL, etc.)
- Understanding how configuration layers work (server-level vs app-level vs tool-level)
- Reviewing the full configuration surface area before production deployment
Skip When
- You already know which config area to change (go directly to
configure-transport,configure-auth, etc.) - You need to build components, not configure the server (see
frontmcp-development) - You need to deploy, not configure (see
frontmcp-deployment)
Decision: Use this skill when you need to figure out WHAT to configure. Open the matching reference under
references/directly when you already know.
Prerequisites
- A FrontMCP project scaffolded with
frontmcp create(seefrontmcp-setup) - Node.js 24+ and npm/yarn installed
Steps
- Identify the configuration area you need using the Scenario Routing Table below
- Navigate to the specific configuration reference (e.g.,
references/configure-transport.md,references/configure-auth.md) for detailed instructions - Apply the configuration in your
@FrontMcpor@Appdecorator - Verify using the Verification Checklist at the end of this skill
Scenario Routing Table
| Scenario | Reference | Description |
|---|---|---|
| Choose between SSE, Streamable HTTP, or stdio | configure-transport |
Transport protocol selection with distributed session options |
| Set up CORS, port, base path, or request limits | configure-http |
HTTP server options for Streamable HTTP and SSE transports |
| Add rate limiting, concurrency, or IP filtering | configure-throttle |
Server-level and per-tool throttle configuration |
| Enable tools to ask users for input | configure-elicitation |
Elicitation schemas, stores, and multi-step flows |
| Set up authentication (public, transparent, local, remote) | configure-auth |
OAuth flows, credential vault, multi-app auth |
| Configure session storage backends | configure-session |
Memory, Redis, Vercel KV, and custom session stores |
| Add Redis for production storage | setup-redis |
Docker Redis, Vercel KV, pub/sub for distributed subscriptions |
| Add SQLite for local development | setup-sqlite |
SQLite with WAL mode, migration helpers |
| Understand auth mode details (public/transparent/local/remote) | configure-auth-modes |
Authentication mode details (public, transparent, local, remote) |
| Fine-tune guard configuration for throttling | configure-throttle-guard-config |
Advanced guard configuration for throttling |
| Use transport protocol presets | configure-transport-protocol-presets |
Transport protocol preset configurations |
| Configure multi-target deployments and frontmcp.config.ts | configure-deployment-targets |
Typed config with defineConfig(), 9 deployment targets, JSON schema |
| Add CSP, HSTS, X-Frame-Options, and other security headers | configure-security-headers |
CSP directives, report-only mode, HSTS preload, custom headers |
| Configure skills HTTP, instructions injection, or audit log | configure-skills-http |
Full skillsConfig reference: auth, cache, instructions, audit log |
Split apps into separate scopes (splitByApp) |
decorators-guide |
Per-app scope and basePath isolation on @FrontMcp |
| Enable widget-to-host communication (ext-apps) | decorators-guide |
extApps host capabilities, session validation, widget comms |
| Enable background jobs and workflows | decorators-guide |
jobs: { enabled: true, store? } on @FrontMcp |
| Configure pagination for list operations | decorators-guide |
pagination defaults for tools/list endpoint |
| Configure npm/ESM package loader for remote apps | decorators-guide |
loader config for App.esm() / App.remote() resolution |
Files
What ships with it
55 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- examples/configure-auth-modes/local-behind-tunnel.md 2.6 KB
- examples/configure-auth-modes/local-consent-enforcement.md 3.2 KB
- examples/configure-auth-modes/local-dcr-control.md 3.6 KB
- examples/configure-auth-modes/local-minimal.md 1.9 KB
- examples/configure-auth-modes/local-multi-provider-orchestration.md 4.0 KB
- examples/configure-auth-modes/local-self-signed-tokens.md 2.8 KB
- examples/configure-auth-modes/local-single-operator.md 2.0 KB
- examples/configure-auth-modes/remote-enterprise-oauth.md 3.7 KB
- examples/configure-auth-modes/transparent-jwt-validation.md 3.2 KB
- examples/configure-auth/local-credential-vault.md 4.1 KB
- examples/configure-auth/local-secure-store.md 5.8 KB
- examples/configure-auth/multi-app-auth.md 2.5 KB
- examples/configure-auth/public-mode-setup.md 1.6 KB
- examples/configure-auth/remote-oauth-with-vault.md 4.1 KB
- examples/configure-deployment-targets/distributed-ha-config.md 3.6 KB
- examples/configure-deployment-targets/json-schema-ide-support.md 1.8 KB
- examples/configure-deployment-targets/multi-target-with-security.md 3.3 KB
- examples/configure-elicitation/basic-confirmation-gate.md 2.3 KB
- examples/configure-elicitation/distributed-elicitation-redis.md 2.5 KB
- examples/configure-http/cors-restricted-origins.md 1.6 KB
- examples/configure-http/custom-http-routes.md 4.4 KB
- examples/configure-http/entry-path-reverse-proxy.md 1.9 KB
- examples/configure-http/unix-socket-local.md 1.7 KB
- examples/configure-security-headers/csp-report-only.md 1.9 KB
- examples/configure-security-headers/full-production-headers.md 2.8 KB
- examples/configure-session/multi-server-key-prefix.md 2.0 KB
- examples/configure-session/redis-session-store.md 1.6 KB
- examples/configure-session/vercel-kv-session.md 1.5 KB
- examples/configure-skills-http/audit-log-basic.md 2.9 KB
- examples/configure-skills-http/audit-log-redis.md 4.8 KB
- examples/configure-skills-http/inject-instructions.md 2.5 KB
- examples/configure-throttle-guard-config/full-guard-config.md 2.7 KB
- examples/configure-throttle-guard-config/minimal-guard-config.md 1.5 KB
- examples/configure-throttle/distributed-redis-throttle.md 3.4 KB
- examples/configure-throttle/per-tool-rate-limit.md 2.6 KB
- examples/configure-throttle/server-level-rate-limit.md 2.2 KB
- examples/configure-transport-protocol-presets/legacy-preset-nodejs.md 1.9 KB
- examples/configure-transport-protocol-presets/stateless-api-serverless.md 2.0 KB
- examples/configure-transport/custom-protocol-flags.md 2.4 KB
- examples/configure-transport/distributed-sessions-redis.md 2.5 KB
- examples/configure-transport/stateless-serverless.md 2.0 KB
- references/configure-auth-modes.md 20 KB
- references/configure-auth.md 37 KB
- references/configure-deployment-targets.md 22 KB
- references/configure-elicitation.md 9.6 KB
- references/configure-http.md 27 KB
- references/configure-security-headers.md 9.5 KB
- references/configure-session.md 12 KB
- references/configure-skills-http.md 17 KB
- references/configure-throttle-guard-config.md 5.4 KB
- references/configure-throttle.md 23 KB
- references/configure-transport-protocol-presets.md 3.6 KB
- references/configure-transport.md 16 KB
- references/setup-redis.md 546 B
- references/setup-sqlite.md 527 B
Changes
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 11d ago Changed c1190614fe25
- 1mo ago First seen · 269 lines · 187 tokens per session scan A 1e05685c6b3d
frontmcp-config is a skill published in the GitHub repository agentfront/frontmcp (147 stars, last pushed today), licensed Apache-2.0. It adds 187 tokens to every session and 4,390 once invoked, about $0.0007 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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