REA
Reverse engineer anything from your terminal or agent with one CLI and MCP server.
Read deSEC domains, DNSSEC keys, zone files and RRsets; create or replace one DNS record set.
Pick the AI app you use, then copy the settings.
Passed 4/4 checks · What you ask goes through the maker’s server (desec.usefulapi.io) · ✓ Commands checked Nov 13, 2026
First: which AI do you use?
Pick your app and the steps appear below.
Works with Claude · about 2 min
No key, nothing to install · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1 · on Team/Enterprise an Owner adds it
CustomizeConnectors
Copy each value into the field with the same name in Claude, then click Continue
deSEC MCP by usefulapihttps://desec.usefulapi.io/mcpClick Continue past the sign-in settings Claude detected · under Authentication choose what the maker says (Sign in now, Sign in when needed or No sign in), then click Add
+ConnectorsdeSEC MCP by usefulapi
Use deSEC MCP by usefulapi and tell me what you can do for me, then show me one thing✓ If Claude says it is using deSEC MCP by usefulapi or shows a deSEC MCP by usefulapi tool in the answer, you are connected
Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with ChatGPT, depending on your plan
Full MCP: ChatGPT Business, Enterprise or Edu on the web · Pro: connects with read/fetch permissions, so tools that change data may not work · Plus: not confirmed in OpenAI’s docs; if you see an add-custom-MCP option on the Plugins page you can try these steps · web only
Plugins+Add custom MCP server
Enter a name, paste the address under Connection, tick the risk warning and click Create as a plugin
deSEC MCP by usefulapihttps://desec.usefulapi.io/mcpStart a new chat and pick deSEC MCP by usefulapi from your plugins before typing
Use deSEC MCP by usefulapi and tell me what you can do for me, then show me one thing✓ If ChatGPT says it is using deSEC MCP by usefulapi or shows a deSEC MCP by usefulapi tool in the answer, you are connected
Menu names checked against OpenAI’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with Claude Code · about 2 min
No key, nothing to install
Mac: press Command+Space and type Terminal · Windows: open PowerShell
claude mcp add --transport http --scope user desec https://desec.usefulapi.io/mcpYou should see deSEC MCP by usefulapi listed as connected
Use deSEC MCP by usefulapi and tell me what you can do for me, then show me one thing✓ If Claude Code says it is using deSEC MCP by usefulapi or shows a deSEC MCP by usefulapi tool in the answer, you are connected
Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with Cursor · about 2 min
No key, nothing to install
Use deSEC MCP by usefulapi and tell me what you can do for me, then show me one thing✓ If Cursor says it is using deSEC MCP by usefulapi or shows a deSEC MCP by usefulapi tool in the answer, you are connected
Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with VS Code · about 2 min
No key, nothing to install
Use deSEC MCP by usefulapi and tell me what you can do for me, then show me one thing✓ If VS Code says it is using deSEC MCP by usefulapi or shows a deSEC MCP by usefulapi tool in the answer, you are connected
Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.
Address for apps that connect over the web
https://desec.usefulapi.io/mcpJSON settings are under “For developers” below
Claude Code
claude mcp add --transport http --scope user desec https://desec.usefulapi.io/mcpCursor (~/.cursor/mcp.json)
{
"mcpServers": {
"desec": {
"url": "https://desec.usefulapi.io/mcp"
}
}
}VS Code (mcp.json)
{
"servers": {
"desec": {
"type": "http",
"url": "https://desec.usefulapi.io/mcp"
}
}
}These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.
Connect over the internet in
ClaudeChatGPTGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatOpen WebUIRaycast
Tool names and descriptions exactly as the server reported them on Nov 9, 2026. The maker wrote them, not us; we show them as plain text.
desec_list_domainsList the DNS domains (zones) in this deSEC account, newest first, with creation and last-published times and minimum TTL. DNSSEC keys are omitted here (see desec_get_domain). Use owns_qname to find which of your domains is responsible for a DNS name (for example before adding a r
desec_get_domainOne domain with its DNSSEC key material: the DNSKEY and the DS records to publish at the registrar for the chain of trust, plus minimum TTL and publication times. GET /domains/{name}/.
desec_export_zonefileThe whole zone as a plain-text BIND-format zonefile (all RRsets except DNSSEC types). Handy as a backup before changing records. Counts as an expensive deSEC operation (300/min). GET /domains/{name}/zonefile/.
desec_list_rrsetsList the DNS records of a domain as RRsets (all records of one name and type, sharing one TTL), newest first. Filter by type and/or subname. Up to 500 per page. GET /domains/{name}/rrsets/.
desec_get_rrsetOne RRset by subname and type, e.g. the A records of "www" or the MX records of the apex. GET /domains/{name}/rrsets/{subname}/{type}/.
desec_create_rrsetWRITE: create ONE new RRset (a set of DNS records of one type at one name) in a domain. It goes live in DNS immediately and a wrong record can take a site or mail offline. Fails if an RRset with this subname and type already exists (use desec_replace_rrset for that) or if a CNAME
desec_replace_rrsetWRITE (overwrites): set ONE RRset to exactly the given TTL and records, creating it if it does not exist and REPLACING all its current records if it does. It goes live in DNS immediately; a wrong value can take a site or mail offline. The previous RRset is read first and returned
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 13, 2026
The registry name was verified against the domain usefulapi.io (the registry checks domain ownership)
Code last changed yesterday
Not applicable: a cloud server run by the owner of usefulapi.io; you don't run code from the repo
No sign-in needed
Read 7 tool descriptions and found no hidden instructions to the AI
Ask, share a tip or report that it does not work. Sorted by what people marked helpful.
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Posts here are written by users, not the PopNx team.
No reviews yet
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 4 of 4 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
The registry does not list a required key, though some servers ask you to sign in on first use.
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
The GitHub repo last changed yesterday, and the latest version (1.25.0) reached the registry yesterday.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT on the web (full MCP on Business and above; Pro read-only).
Servers in the same category from other makers, sorted by stars.
Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Reverse engineer anything from your terminal or agent with one CLI and MCP server.
A powerful toolkit for coding, providing semantic retrieval and editing capabilities.
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
Use deSEC from Claude, Cursor, or any MCP client — domains, DNSSEC keys, zone files and RRsets, plus guarded single-RRset writes. Hosted, no local install: connect with your own deSEC credentials.
Live endpoint: https://desec.usefulapi.io/mcp · Homepage: https://usefulapi.io/desec
https://desec.usefulapi.io/mcp.claude mcp add --transport http desec https://desec.usefulapi.io/mcp, then run /mcp to log in.{
"mcpServers": { "desec": { "url": "https://desec.usefulapi.io/mcp" } } }
Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your deSEC credentials.
Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/desec/
| Tool | Type | What it does |
|---|---|---|
desec_list_domains | read | List domains |
desec_get_domain | read | Get domain |
desec_export_zonefile | read | Export zonefile |
desec_list_rrsets | read | List RRsets |
desec_get_rrset | read | Get RRset |
desec_create_rrset | write | Create RRset |
desec_replace_rrset | write | Replace RRset |
desec_usage_status | meta | Usage status (free-tier meter) |
desec_request_feature | meta | Request a missing feature |
desec_upgrade | meta | Upgrade to Pro or Pro+ |
desec_cancel_subscription | meta | Cancel the Pro subscription |
read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Pro (per user) | $9/mo or $90/yr (2 months free) | Unlimited* |
\*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to support@usefulapi.io.
Pro covers this server only. Subscribe with desec_upgrade (it returns a Stripe Checkout link). Cancel any time with desec_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running desec_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
MIT © usefulapi. Not affiliated with or endorsed by deSEC.