"A browser focused on stealth or privacy features" matching MCP connectors:

Lint a SKILL.md for frontmatter, structure, secrets and size. All 6 tools free.

Risk-scan a diff, flag AI-generated-code tells, find secrets. 5 of 7 tools need no account.

A skeptical senior-engineer code reviewer over MCP: risk-scans unified diffs, flags AI-generated-code tells, reports complexity hotspots, scans for leaked secrets, and runs an OWASP security pass — real analyzers, no external APIs. Free tier, no signup.

A fully free linter for agent skill files: lint_skill validates YAML frontmatter, structure, size budgets, and safety phrasing with a pass/fail verdict; packaging_check validates zip layout against marketplace rules; plus regex_test, json_validate, diff_texts, and cron_explain for skill authors. No license or account required.

What CSS you can actually ship today, from live Baseline data and MDN browser-compat-data.

Score the privilege a Chrome MV3 extension takes from its manifest, and diff permission sets.

Repository evidence for agents before they adopt dependencies, enter codebases, compare, or merge.

Detect malicious or vulnerable npm packages: registry search, OSV.dev and GitHub advisory lookups

Detect malicious or vulnerable npm packages: registry search, OSV.dev and GitHub advisory lookups

Rams is a design reviewer for UI code. The MCP server puts the hosted engine inside a coding agent: the agent passes files to the review_files tool and gets back a 0–100 score with file:line issues and concrete fixes — accessibility, color, typography, spacing, components, UX, motion, craft, and native SwiftUI. Same engine and scoring as the Rams GitHub App. 258 rules, published at rams.ai/rules. Free tier: 30 reviews/month.

Runs your code against a contract; returns HELD or BROKE at the exact input. Deterministic.

Multi-model code review: a panel of models + detectors return a pass/fail verdict. Paid via x402.

Stop your AI agents from writing sloppy TypeScript. A toolkit that teaches coding agents like Claude Code, Codex, Cursor, Amp, and more to ship production-ready code in half the time, at half the cost. Docs are available at https://convention.sh/docs

The OpenZeppelin Cairo Contracts MCP server generates secure smart contracts in the Cairo language for Starknet environments based on OpenZeppelin templates. It brings OpenZeppelin's proven security and style rules directly into AI-driven development workflows to create safe, production-ready contracts. Key capabilities include providing templates for ERC-20, ERC-721, ERC-1155, Multisig, Governor, and Vesting contracts.

Send a coupling matrix, get zone classifications and optimal factorization strategy.

DBRE-grade SQL analysis inside any MCP client. No connection. No install. Paste a query.

Audit GitHub repos for malicious and supply-chain code before you depend on them.

Ask a codebase what calls what: search, blast radius, paths between symbols, and diffs.

Live PR/MR code reviews via review_url_code. OAuth or portal Bearer auth.

65+ free in-browser developer tools (JSON, Base64, JWT, hash, regex…) callable over MCP.