Atlas / MCP servers / jonradoff / LastSaaS

LastSaaSCAUTION

mcp/jonradoff/lastsaas

SaaS boilerplate/starter-kit in Go+React with Stripe integration, multi-tenant support, comprehensive features and AI-agent ready

Verdict
CAUTION
Grade
B
Trust score
87 /100
Exposed tools
—
Transport
stdio
License
MIT
Stars
173
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

[](https://github.com/jonradoff/lastsaas/actions/workflows/ci.yml) [](https://codecov.io/gh/jonradoff/lastsaas) [](https://goreportcard.com/report/github.com/jonradoff/lastsaas)

The last SaaS boilerplate you'll ever need.

LastSaaS is a complete, production-ready SaaS foundation built entirely through conversation with Claude Code. It gives you multi-tenant account management, authentication, role-based access control, white-label branding, Stripe billing, API keys, outgoing webhooks, a full admin interface, system health monitoring, credit-based usage tracking, and product analytics with telemetry — everything you need to launch a SaaS business, ready to customize for your specific product.

The bottleneck for building software isn't engineering capacity anymore — it's imagination. LastSaaS proves it: a single person with a clear vision and an AI agent can stand up what used to require a team and months of work. And because it was built with Claude Code, the codebase is fork-ready for agentic engineering — point an AI agent at it and keep building your product through conversation.

[Project Page](https://metavert.io/lastsaas)

Why LastSaaS Exists

Every SaaS product needs the same boring foundation: user accounts, teams, roles, authentication, admin dashboards, billing, usage limits, branding, webhooks, API keys. Historically, building that foundation meant weeks of plumbing before you could write a single line of your actual product.

LastSaaS eliminates that. Fork it, point an AI agent at it, and start building your product on top of a foundation that already handles:

  • Multi-tenant isolation with role-based access
  • JWT authenticat
Read from source at commit 4681db5b6a5dOBSERVED · 2026-10-07
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.

claude-code
claude mcp add frontend --env LASTSAAS_API_KEY=${LASTSAAS_API_KEY} -- npx -y [email protected]
claude-desktop
{
  "mcpServers": {
    "frontend": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "LASTSAAS_API_KEY": "${LASTSAAS_API_KEY}"
      }
    }
  }
}
03

Trust audit

CAUTIONgrade B · trust 87/100 Install with care. The audit found things worth knowing before you trust its output.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codeFAIL
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
declared (9 observation(s))
Network
declared (6 observation(s))
Shell
none-observed
Dependencies
not all pinned
Secrets in source
none-found

Findings (12)

HIGHNetwork egress · net.metadata_ip · CWE-200, CWE-319
backend/internal/api/handlers/webhooks.go:172
if ip.Equal(net.ParseIP("169.254.169.254")) {
Why it matters. cloud metadata endpoint: the classic SSRF credential grab
LOWInventory / provenance · inv.hidden_file · CWE-1104
.goreleaser.yaml
.goreleaser.yaml
Why it matters. hidden member outside the usual dotfiles
Fix. review its purpose
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
frontend/src/pages/admin/APIPage.tsx:8
import { adminApi } from '../../api/client';
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
frontend/src/pages/admin/APIPage.tsx:9
import type { APIKey, Webhook as WebhookType, WebhookDelivery, WebhookEventTypeInfo } from '../../types';
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
frontend/src/pages/admin/APIPage.tsx:10
import LoadingSpinner from '../../components/LoadingSpinner';
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
frontend/src/pages/admin/APIPage.tsx:11
import { getErrorMessage } from '../../utils/errors';
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
frontend/src/pages/admin/APIPage.tsx:12
import { useTenant } from '../../contexts/TenantContext';
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
backend/internal/webhooks/dispatcher_integration_test.go:257
webhook := testutil.CreateTestWebhook(t, database, "Bad URL Hook", "http://127.0.0.1:1", "",
LOWSupply chain · supply.unpinned · CWE-829, CWE-1357
frontend/package.json
@hookform/resolvers, @tanstack/react-query, axios, dompurify, lucide-react, react, react-dom, react-hook-form
Why it matters. 35 dependency range(s) float
Fix. pin exact versions or ship a lockfile
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
README.md:323
- [Resend](https://resend.com) API key — for email verification, password resets, and invitations
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWInventory / provenance · mcp.no_tools_extracted · CWE-1104
server.json
Why it matters. the tool list is enumerated at runtime by tools/list, not declared in source
Fix. the page says so rather than showing an empty table
INFOSupply chain · prompt.pipe_to_shell · CWE-829, CWE-1357
README.md:844
curl -L https://fly.io/install.sh | sh

Gates applied: no_behavioural_pass.

Audited 2026-10-07 · audit v0.4.1 · source sha 4681db5b6a5dfull audit observations/trust-audit/mcp-server/jonradoff__lastsaas.json · Report an issue / request a re-scan
04

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-074681db5b6a5dCAUTIONB87first audit
05

Questions

What is the LastSaaS MCP server?

SaaS boilerplate/starter-kit in Go+React with Stripe integration, multi-tenant support, comprehensive features and AI-agent ready

Is LastSaaS safe to connect to an agent?

With care. The audit graded it B (87/100) and found 12 things worth knowing before you trust this server, listed below with the exact line each was found on.

What credentials does LastSaaS need?

It reads LASTSAAS_API_KEY from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.

How does LastSaaS run?

It speaks stdio, so it runs as a local process your client starts. It is published on npm as frontend at 0.0.0.

How current is this page?

The grade is for one exact copy of the source (4681db5b6a5d), read on 2026-10-07. The repository is watched and re-audited when it changes.

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