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Dechonet

30 security tools for AI agents: phishing links, exposure maps, DNS, SSL, PQC, history, pivots.

Connector by dechonet.comOfficial · Domain verified by the MCP Registry

IndexedLicense unknownLocal (stdio)Remote (HTTP)★ 1
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Install

Works with Claude Code, VS Code, Codex, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/dechonet-com-mcp

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://dechonet.com/mcp Remote (HTTP)

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About

30 security tools for AI agents: phishing links, exposure maps, DNS, SSL, PQC, history, pivots.

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools
26 read · 4 write · 0 delete
Secrets
2 (API keys, tokens or passwords)
Install scripts
None found
Runs as
Node.js package

Tools by what they do 30

From the running server's own tool list (tools/list) on Oct 25, 2026.

Read 26 · Look things up without changing anything.

  • asn_lookup
  • check_before_action
  • dns_lookup
  • dns_propagation
  • domain_changes
  • domain_history
  • email_auth
  • email_header_analysis
  • exposure_map
  • golive_check
  • http_security
  • impersonation_exposure
Show 14 more tools
  • infrastructure_pivot
  • ip_info
  • lookalike_domains
  • mcp_server_check
  • owasp_check
  • phishing_link_check
  • port_scan
  • pqc_readiness
  • reverse_dns
  • security_scan
  • ssl_check
  • subdomain_discovery
  • subnet_calc
  • whois_lookup

Write 4 · Create, change, send or run things.

  • report_page
  • set_expectations
  • verify_expectations
  • watch_domain

Secrets and settings it asks for

Secrets: values you paste in that let it act as you.

  • DECHONET_API_KEY
  • DECHONET_SESSION_COOKIE

Other settings (environment variables or headers).

  • DECHONET_LOCALE
  • DECHONET_URL

Network hosts it talks to 1

  • dechonet.com · found in remote endpoint, install command

Tools (30)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • asn_lookupASN / BGP Lookupread-only

    Look up Autonomous System (ASN) / BGP information for an IP address or AS number: the network operator, announced prefixes, abuse contact, and a classification (cloud, CDN, ISP, hosting, or enterprise). Use this to identify who runs a network or whether an IP is cloud/CDN-hosted. Use reverse_dns instead for the host-level PTR name of a single IP. Read-only; requires no API key; rate-limited. Returns operator, prefixes, classification, and abuse contact.

  • check_before_actionCheck a Page Before Logging In or Payingread-only

    Check the page an agent is about to log in, pay, download from or submit to: whether the address impersonates a brand, how new the domain is, whether DechoNet or a licensed feed has already flagged it, and — opened from Seoul (and Tokyo for Japan-targeted pages) as a phone — what the page turns into, including text it hides from people but an AI agent would read (instructions to ignore its rules, hand over secrets or keep the user out of it raise the answer to suspicious). For a payment, the caller can report the page structure as host names only (where forms submit, which origins frames come …

  • dns_lookupDNS Lookupread-only

    Query DNS records (A, AAAA, MX, TXT, NS, SOA, CAA) for a domain and validate email-related records, including DNSSEC presence and SPF/DMARC syntax, returning severity-rated diagnostics. Use this for a single authoritative answer about one domain. Use dns_propagation instead when you need to compare answers across multiple global resolvers (e.g., right after a change), or email_auth for a full SPF/DKIM/DMARC deliverability assessment. Read-only; requires no API key or authentication; subject to rate limiting. Returns a text report: status, KPI summary, detected issues, and recommended actions.

  • dns_propagationDNS Propagation Checkread-only

    Query one DNS record across 8+ global public resolvers (Google, Cloudflare, Quad9, OpenDNS, and more) simultaneously and report which resolvers return stale versus updated values. Use this after changing a record to confirm worldwide propagation. Use dns_lookup instead for a single authoritative answer with SPF/DMARC validation. Read-only; requires no API key; rate-limited. Returns per-resolver values and a consistency verdict.

  • domain_changesDomain Change Historyread-only

    Report what has changed for a domain over time — the security regressions and drift that DechoNet's daily monitoring has recorded across every watch on the domain (SSL grade, headers, DNS, OWASP posture, impersonation exposure, etc.). Use this to answer "what changed on my domain since yesterday/last week?" — a question that requires persistent snapshots and therefore cannot be reconstructed from a single live lookup. It is the first check to run when a domain looked at before comes up again. Two sources: (a) the daily watch timeline if the domain is under DechoNet monitoring, and (b) even wit…

  • domain_historyInfrastructure Historyread-only

    Show how a domain's (or IPv4 address's) infrastructure has changed over time from DechoNet's stored observations: nameservers, A/AAAA, MX, CNAME, certificate issuer, registrar, RDAP nameservers and status, and for an IP its ASN and PTR — each value with when it was first and last seen. Use this when the question is about the past ("when did the nameservers change?", "which IPs has it used?"); use dns_lookup or rdap_lookup for the current state. Coverage: only what DechoNet itself observed (lookups, watches, own discovery, and a daily re-resolution of the Korean-brand and phishing names it trac…

  • email_authEmail Authentication Checkread-only

    Assess a domain's email authentication and deliverability posture: MX records, SPF, DMARC, DKIM (probes 15 common selectors), BIMI, MTA-STS, TLS-RPT, and DANE, plus a blacklist check across all MX hosts, returning a 0-100 deliverability score. Use this for a full sending/receiving readiness review of a domain. Use dns_lookup instead if you only need raw TXT/MX records, or email_header_analysis to diagnose a specific message that was already sent. Read-only; requires no API key; rate-limited. Returns a text report: score, per-mechanism KPIs, issues, and actions.

  • email_header_analysisEmail Header Analysisread-only

    Parse raw email headers to reconstruct the delivery path (each Received hop in order), extract SPF/DKIM/DMARC authentication results, measure per-hop delays, and flag unencrypted (non-TLS) hops. Use this to diagnose a specific message that was already delivered — spoofing, delays, or where mail was lost. Use email_auth instead to assess a domain's sending configuration before sending. Read-only; requires no API key; rate-limited. INPUT is the full raw header block. OUTPUT is a text report containing: the ordered hop route, per-mechanism auth results (pass/fail), detected inter-hop delays, and …

  • exposure_mapExposed Admin Page Checkread-only

    Map what an organisation exposes to the internet beyond its home page: subdomains from Certificate Transparency logs (plus hosts DechoNet has already observed), each opened once from outside and sorted into developer/ops tools, directory listings, admin screens, VPN/remote-access logins, staging servers, default install pages, login pages and so on — the forgotten assets AI-driven attack tools look for first. Use this when a user wants to know their attack surface or after a breach in their sector. Returns counts per category, a verdict (bad/warn/ok) and what to do. Public view only: the per-h…

  • golive_checkGo-Live Readiness Checklistread-only

    Check whether a domain is ready to launch or migrate — a go/no-go verdict over five essentials: DNS resolves to an IP, has propagated consistently across global resolvers, SSL/TLS is ready, the site is reachable over HTTPS, and the domain registration is not about to expire. Use this right before flipping DNS to a new server, or to confirm a migration has landed. It answers "can I switch over yet?"; use security_scan for a security posture grade or the individual tools for depth. Any failing essential yields not_ready; only cautions yields caution; all clear yields ready. Read-only (a passive …

  • http_securityHTTP Security Headers Auditread-only

    Follow a URL's HTTP redirect chain and audit response security headers (CSP, HSTS, X-Frame-Options, COOP, CORP, COEP, Permissions-Policy), grading A+ to F on the six core headers (CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy; COOP/CORP/COEP are reported but not graded) and flagging information leaks such as server-version disclosure. Use this for HTTP-layer/header posture. Use ssl_check instead for certificate or TLS-handshake issues, or security_scan for a full domain report. Read-only (an HTTP GET-style probe that sends no payload); requires no API …

  • impersonation_exposureBrand Impersonation Exposureread-only

    Assess how exposed a domain is to brand impersonation and phishing, PASSIVELY: live typosquat/lookalike domains (homoglyph, omission, transposition, TLD swap) that actually resolve, operational subdomains (dev/staging/admin) exposed in CT logs, and whether a wildcard certificate exists — returning an A+ (low exposure) to F (high exposure) grade. Framing: a registered lookalike domain is not proof of impersonation — it may be a legitimate third party or the owner's own — so report it as exposure to verify, not as an accusation against that domain. Fully passive: public DNS delegation checks plu…

  • infrastructure_pivotInfrastructure Pivotread-only

    Find other domains DechoNet has seen with the same infrastructure value — a nameserver, IP address, MX host, certificate issuer or registrar — with first and last seen, to map related infrastructure (e.g. other phishing domains on the same rare nameserver). Use it after domain_history or dns_lookup gives you a distinctive value. Shared infrastructure (CDN edges, public CAs, large registrars and DNS hosts) returns a count only, since sharing it says nothing about ownership. Read-only; REQUIRES a free DechoNet API key (account page; remote: send Authorization: Bearer dn_…, npm: set DECHONET_API_…

  • ip_infoMy IP Inforead-only

    Report information about the caller's own public IP as seen by the server: IPv4/IPv6 address, ISP, ASN, approximate geolocation, and proxy/VPN heuristics. Takes no input — it reflects the egress IP of THIS MCP server's network, which is usually NOT the end user's IP. Use this to discover the server's outbound IP or test connectivity. To inspect a specific, known IP instead, use asn_lookup or reverse_dns. Read-only; requires no API key; rate-limited.

  • lookalike_domainsLookalike Domain Checkread-only

    Generate the typosquat/lookalike variants of a domain that phishers actually register — homoglyph swaps (l→1, o→0, rn→m), TLD swaps (.com→.co), character omissions, transpositions, repetitions, hyphenations — and check which of them are currently registered (live NS delegation via DoH). Use this to assess brand-impersonation and phishing exposure for a domain the user is responsible for. A registered variant is NOT proof of abuse (it may be an unrelated legitimate site) — follow up with whois_lookup on each hit for its owner and registration date. Read-only; requires no API key; rate-limited. …

Show 15 more tools
  • mcp_server_checkMCP Server Checkread-only

    Check a remote MCP server from outside before connecting it to an agent: whether it requires authentication (and publishes OAuth protected-resource metadata, RFC 9728), which of its tools act on the world (run commands, write or delete files, send messages, make payments, read secrets), whether its server instructions or tool and parameter descriptions contain text that steers an agent (tool poisoning), whether a web page on any site could call it (CORS and Origin), HTTPS, and tool annotations. Sends initialize and tools/list only — no tool is ever called; query strings are removed before anyt…

  • owasp_checkOWASP Security Checkupread-only

    Assess a domain's OWASP posture from EXTERNAL OBSERVATION only: the OWASP Secure Headers Project plus the externally observable OWASP Top 10:2025 subset — A04 Cryptographic Failures (TLS/cert), A02 Security Misconfiguration (header/info leaks), and A03 Software Supply Chain Failures (outdated components via version disclosure) — returning an A+ to F grade. Scope: A01 (Access Control, incl. SSRF), A05 (Injection), A06 (Insecure Design), A07 (Authentication), A08, A09 and A10 (Exceptional Conditions) are not checked — they need authenticated access or active/injection testing, so the result list…

  • phishing_link_checkPhishing / Smishing Link Checkread-only

    Check the links in a suspicious text message (smishing) or e-mail before anyone taps them. Paste the whole message or a single URL: every link is extracted, followed through URL shorteners to its real destination, and judged on observable signals — domain age from RDAP, impersonation of Korean banks/couriers/telecoms/portals and global brands incl. AI services such as ChatGPT/Claude/Gemini (brand keyword, lookalike spelling, or the brand domain worn as a subdomain), ClickFix pages (a fake "verify you are human" check that has the visitor paste a command into Win+R/PowerShell), Android APK down…

  • port_scanOpen Port Scanread-only

    Probe a host for a fixed set of common TCP ports (HTTP, HTTPS, SSH, FTP, SMTP, DNS, and common databases) and report which are open, the service name, and the response time. BEHAVIOR: this makes an ACTIVE TCP connection to the target. It is non-intrusive — a connect probe only; it does not authenticate, send exploits, or transfer data — and changes nothing on the target (read-only), but the connection is visible in the target's logs, so only scan hosts you own or are explicitly authorized to test. Use this to confirm which services are exposed. Use ssl_check or http_security instead to assess …

  • pqc_readinessPost-Quantum TLS Readinessread-only

    Check whether a website's public TLS endpoint is ready for post-quantum cryptography: does it complete a TLS 1.3 handshake that offers only the hybrid X25519MLKEM768 key exchange (ML-KEM), and does the organisation's own server provide it or a CDN edge in front of it. Also reports what the certificate chain is signed with (tracked, not scored: public CAs do not issue post-quantum certificates yet). Verdicts: ready (the origin server supports it), partial (a CDN edge provides it; the CDN-to-origin leg is invisible), not_ready (the hybrid-only handshake was refused), unknown (inconclusive — not …

  • report_pageReport a Page

    Report a page to DechoNet: phishing or brand impersonation, a fake payment window (card fields where a payment provider should be), hidden instructions aimed at AI agents, a malicious download, a DechoNet verdict that looks wrong (false_positive) or a danger it missed (missed), an MCP server whose tool descriptions steer agents (malicious_mcp — url is the MCP endpoint), or a network anomaly (network_anomaly — the certificate serial/issuer or addresses you saw for the host, in observed). Kept for 90 days: the host and the kind, with an anonymous reporter hash used to count independent reports; …

  • reverse_dnsReverse DNS (PTR) Lookupread-only

    Resolve the PTR (reverse DNS) record for an IPv4 or IPv6 address and verify forward-confirmed reverse DNS (FCrDNS) by checking that the PTR hostname resolves back to the same IP. Infers the hosting provider from PTR naming patterns. Use this to validate mail-server rDNS or identify a single IP's host. Use asn_lookup instead for network/BGP ownership of the IP. Read-only; requires no API key; rate-limited. Returns the PTR hostname, FCrDNS pass/fail, and a provider guess.

  • security_scanFull Domain Security Scanread-only

    One-shot comprehensive audit of a domain, scored 0-100 with an A+ to F grade and a prioritized action list. Five scored areas: the web connection (TLS certificate and HTTP security headers, measured on www when only www has an address), mail spoofing defence (SPF/DKIM/DMARC; a domain that uses no mail is judged only on SPF -all and an enforced DMARC policy), domain registration and DNS, exposure (admin screens, developer tools and the like on hosts named in public certificate logs — counts only), and reputation (DechoNet verdict store and licensed phishing feeds). DNS propagation, reverse DNS …

  • set_expectationsSet Outside Expectations (daily re-check)

    Record what a domain should show from outside and check it now — HSTS or another header present, DMARC enforcing, an issue key no longer reported, an HTTP or TLS grade at or above a level, a certificate with enough days left, a DNS record present, absent or containing a value, HTTPS answering. DechoNet reads the domain fresh (not from cache) with its public dns / ssl / http / email tools, from its own servers and the Seoul observation point, and then re-checks the set every day. Each result is pass, fail or unknown; unknown (a tool or part of it did not answer) is never a pass. Without an API …

  • ssl_checkSSL Certificate Checkread-only

    Inspect a host's served TLS/SSL certificate and connection: expiry date, issuer, SAN list, chain integrity, revocation (OCSP, then CRL; unknown when neither answers — not graded unless revoked), TLS version, and HSTS, returning an A+ to F grade weighted by certificate validity (40%), TLS version (25%), chain trust (15%), and HSTS (20%). From Seoul it also lists the protocol versions and cipher suites the server accepts — including SSL 3.0, RC4, 3DES, export, NULL and anonymous suites and the Korean SEED/ARIA ciphers — with TLS compression, secure renegotiation, TLS_FALLBACK_SCSV, DH group size…

  • subdomain_discoverySubdomain Discoveryread-only

    Enumerate the subdomains of a domain from Certificate Transparency logs — fully passive (no packets are sent to the target; CT logs are public records of every TLS certificate ever issued). Flags operational-looking names (dev, staging, admin, vpn, legacy) and wildcard certificates, because forgotten subdomains are a common takeover path. Use this as the first recon step to map a domain's attack surface. Use dns_lookup to check whether a discovered name still resolves, or lookalike_domains for typosquat variants of the domain name itself. Read-only; requires no API key; rate-limited. Returns t…

  • subnet_calcIPv4 Subnet Calculatorread-only

    Compute IPv4 subnet details from CIDR notation entirely locally — no network call: network and broadcast addresses, usable host range, total usable hosts, subnet mask, and wildcard mask. /31 and /32 are handled per RFC 3021 (point-to-point / single host). Use this for IPv4 address planning. It does not query DNS or contact any host, so it is purely computational. Requires no API key and is NOT rate-limited (computed in-process). Returns the calculated fields as text.

  • verify_expectationsVerify Outside Expectations Now

    Check expectations from outside now, with fresh reads: either a stored set by id (from set_expectations — its state is updated and an anonymous set is kept another 30 days), or a domain plus a list of checks once, storing nothing. Same checks and outcomes as set_expectations (pass / fail / unknown, unknown is never a pass), each tool read once with a signed observation receipt. Typical use: right after a change, to see whether it is visible from outside yet — DNS and CDN changes can take minutes to hours to show. Rate-limited (a few checks per minute).

  • watch_domainWatch a Domain (daily re-check)

    Start (or reuse) a daily DechoNet watch on a domain so that changes are recorded over time — SSL grade/issuer/expiry, DNS records, HTTP security headers, domain registration, and optionally OWASP posture and impersonation exposure. Use this once when the user cares about a domain beyond a one-off check (their own domain, a client, a vendor, a target under investigation). After this, domain_changes answers "what changed since last time?" from real daily snapshots. Not read-only (it creates a watch record) but idempotent: watching an already-watched domain returns the existing watch. No account,…

  • whois_lookupWHOIS / RDAP Domain Lookupread-only

    Retrieve domain registration data via RDAP (with WHOIS fallback): registrar, creation/expiry/update dates, nameservers, and EPP status flags, highlighting risk states such as clientHold and pendingDelete. Use this for ownership, lifecycle, and expiry questions about a registered domain. Use dns_lookup instead for live DNS records, or reverse_dns/asn_lookup for IP-level ownership. Read-only; requires no API key; rate-limited. Returns registrar, key dates, nameservers, and status flags.

Signals

Stars
1
Forks
0
Open issues
1
Last commit
Oct 19, 2026 (9 days ago)
Last release
Oct 19, 2026 (9 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name
com.dechonet/mcp
Version
1.6.3
Auth
Auth not stated, API key
Packages
npm dechonet-mcp
License
License unknown
Repository
github.com/node-man/dechonet-mcp
Website
dechonet.com/mcp
First seen
Oct 24, 2026
Last checked
Oct 25, 2026
Source
Official MCP Registrygithub-graphql
Cite this page

Dechonet MCP server. Agent Mart. https://agentmart.dev/connectors/dechonet-com-mcp (last updated 2026-10-25)