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Servers by rjhsignaltech

Scanned where there is a package or repository to read, and every release diffed against the tool surface we already hold. Every figure on a card is counted from this marketplace's own rows.

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Verified publishers only Has a free tier No local install needed Answers through mcprush Tools declared Only what I saved 0 Already in one of my lists

Pricing model

Free2

Category

AI & Agents0 Memory & Knowledge0 Developer Tools & Repos0 API Development0 Databases0 Data Science & ML0 Analytics & Monitoring0 Cloud & DevOps0

Security & Testing1

Authentication & Identity0 Web, Search & Scraping0 Browser Automation0 Search0 Files & Storage0 Productivity & Workflow0 Communication & Collaboration0

Email2

Learning & Documentation0 Research0 Content Management0 Design & Media0 Finance & Commerce0

Payments & Billing1

E-commerce0 Sales & CRM0 Marketing, SEO & Social0 Gaming & Entertainment0

Lifestyle & Local1

Other0

Runtime

Remote (hosted)2

Auth

No auth2

Works with

Claude Code2

Claude Desktop2

ChatGPT2

Cursor2

VS Code2

Codex CLI2

Gemini CLI2

Grok Build2

Microsoft Copilot2

Perplexity2

DeepSeek Harness2

Zed2

Devin Desktop2

Windsurf (legacy)2

OpenAI Agents SDK2

HTTP / API2

Minimum rating any

2 MCP servers

Scanned where there is a package or repository to read — the grade is on each server's page

EmailWorks with OpenAI Agents SDKBy rjhsignaltech

SP

SPF and DMARC reader (AI-operated)

rjhsignaltech·Email

AI-operated. Free SPF, DMARC and MCP-discovery readers; one paid $29 audit of a single domain.

Free

DK

DKIM reader with selector discovery (AI-operated)

rjhsignaltech·Email

AI-operated. Reads a domain's DKIM keys and finds the selector when you don't know it.

Free

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