Preflight
Scans an MCP server for security gaps before your agent connects.
Connector by allthepossibles.com · Domain verified by the MCP Registry
Install
Works with Claude Code, VS Code, Cursor, Windsurf. Read the repository before you give any tool access to your data.
npx agentmarket install connector/allthepossibles-com-preflight
Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.
Remote endpoint
https://preflight.allthepossibles.com/mcpRemote (HTTP)
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About
Reviews
Write a reviewNo reviews yet. Installed it? Reviews come from verified installers only. How reviews work
Permissions
What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.
- Tools
- 4 read · 0 write · 0 deleteRead-only
- Secrets
- None asked for
- Install scripts
- Nothing to install (hosted)
- Runs as
- Hosted (remote endpoint)
Tools by what they do 4
From the running server's own tool list (tools/list) on Oct 25, 2026.
Read 4 · Look things up without changing anything.
check_outputscan_contentscan_extensionscan_mcp_server
Network hosts it talks to 1
preflight.allthepossibles.com· found in remote endpoint, install command
Tools (4)
As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].
check_outputCheck outputread-onlyCheck a structured output you're about to return or act on for degenerate-answer patterns a schema check can't see: invalid JSON, a placeholder value ('TBD', 'N/A', 'unknown') where a real answer should be, an array of byte-identical items (a common symptom of a loop that never advanced), or an expected field that's missing or empty. Schema validity and answer quality are different guarantees, call this before trusting your own output, not just after validating it parses.
scan_contentScan contentread-onlyCheck a document or web page for hidden instructions before an agent reads, summarizes, or acts on it: invisible Unicode, obfuscated payloads, and (on Pro) a semantic pass for prompt-injection phrasing aimed at the model instead of the human reader. Pass either a URL to fetch, or raw text you already have.
scan_extensionScan extensionread-onlyCheck a VS Code extension or a Claude Skill before installing or trusting it. For a VS Code extension (which runs with full Node.js access and no permission model to scope): publisher domain-verification status weighed against install count, and known-bad-signature checks on its description. For a Claude Skill: hidden-instruction and obfuscated-payload detection on the SKILL.md body (the same engine scan_content uses), unscoped or credential-referencing tool grants in its allowed-tools/disallowed-tools frontmatter, inline shell execution baked into the file itself, and pattern matching on any …
scan_mcp_serverScan MCP serverread-onlyCheck an MCP server for real risk signals before trusting it: unauthenticated transport, capability overreach (filesystem/shell/credential access with no scoping), and known-bad signatures. Pass a live server URL, or a manifest of tool definitions if the server isn't reachable over HTTP. Semantic prompt-injection detection runs too if a Pro API key is sent as an Authorization: Bearer header, see /docs.
Signals
- Last release
- Oct 19, 2026 (10 days ago)
Details
- Registry name
com.allthepossibles/preflight- Version
- 1.0.0
- Auth
- Auth not stated
- License
- License unknown
- First seen
- Oct 24, 2026
- Last checked
- Oct 25, 2026
- Source
- Official MCP Registry
More from allthepossibles.com
- 0.562score
Toolbox
allthepossibles.com
Small tools for agent builders: AI-writing tells, tools/list token cost, CLAUDE.md lint, and more.
ConnectorAFreshness: ARemoteRead-onlyClaude Code +3 - 0.562score
Design Check
allthepossibles.com
Scores whether a page reads as AI-generated and names the tells to fix.
ConnectorAFreshness: ARemoteRead-onlyClaude Code +3 - 0.562score
Designers
allthepossibles.com
Checks, prompts and skills for designers working with AI: contrast, a11y, heuristics, critique.
ConnectorAFreshness: ARemoteRead-onlyClaude Code +3 - 0.562score
Pulse
allthepossibles.com
Core Web Vitals (LCP, INP, CLS) per URL from the Chrome UX Report, with daily checks on Pro.
ConnectorAFreshness: ARemoteRead-onlyClaude Code +3 - 0.562score
Verdict
allthepossibles.com
Design review as MCP tools: critique, states, journeys, UI copy, PRD assumptions.
ConnectorAFreshness: ARemoteRead-onlyClaude Code +3
Cite this page
Preflight MCP server. Agent Mart. https://agentmart.dev/connectors/allthepossibles-com-preflight (last updated 2026-10-25)