isMalicious threat intelligence for AI agents

com.ismalicious/mcp-serverVersion 0.8.0

Reputation for IPs, domains, URLs, hashes, emails, phones; CVEs; injection and email scans

Status

Responds156 msNov 14, 2026, 14:02 UTCAnswered our handshake without sign-in.

Registry data may be out of date

We could not refresh it, so this page shows the last copy.

Last checked: Nov 14, 2026, 14:02 UTC
Latency: 156 ms
Remotes responding: 1 of 1
Sign-in: API key
Hosting: EU hosting detected (detected, not a legal statement)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://api.ismalicious.com/mcpResponds156 msNov 14, 2026, 14:02 UTC

No sign-in

Claude Code

claude mcp add --transport http mcp-server https://api.ismalicious.com/mcp --header 'Authorization: Bearer <YOUR_TOKEN>'

Replace <YOUR_TOKEN> before running.

Claude Desktop and claude.ai

Settings > Connectors > Add custom connector
Name: mcp-server
Remote MCP server URL: https://api.ismalicious.com/mcp
This server expects the header Authorization.

Cursor

{
  "mcpServers": {
    "mcp-server": {
      "url": "https://api.ismalicious.com/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_TOKEN>"
      }
    }
  }
}

Replace <YOUR_TOKEN> before running.

VS Code

code --add-mcp '{"name":"mcp-server","type":"http","url":"https://api.ismalicious.com/mcp","headers":{"Authorization":"Bearer <YOUR_TOKEN>"}}'

Replace <YOUR_TOKEN> before running.

Streamable HTTP

npm: @ismalicious/mcp-server 0.8.0

Package only

npm (npx)

claude mcp add mcp-server -- npx -y @ismalicious/mcp-server@0.8.0

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Tools

14 tools

Tools of isMalicious threat intelligence for AI agents
	Description		Read-only	Idempotent	Open world
`ack_alert`Set the status of one alert of the isMalicious inbox (an id from list_alerts): ACKNOWLEDGED (seen; still listed by default), RESOLVED (handled; no longer listed by default) or OPEN (new again). Reversible: any status can be set again. A CVE alert (cve.finding) follows its vulnerability finding, for the whole organization: ACKNOWLEDGED acknowledges an open finding, RESOLVED marks a finding not yet closed as patched, OPEN reopens it, and every member's copy of the alert follows; the answer names the finding under `finding`, and the alert's status is the one the API returns (ack_finding sets NOT_AFFECTED or SNOOZED). Scope: the inbox of the user the key belongs to, which for an organization API key is the organization owner's; an alert of another inbox reads as not found. Costs no request of the monthly quota.	Set the status of one alert of the isMalicious inbox (an id from list_alerts): ACKNOWLEDGED (seen; still listed by default), RESOLVED (handled; no longer listed by default) or OPEN (new again). Reversible: any status can be set again. A CVE alert (cve.finding) follows its vulnerability finding, for the whole organization: ACKNOWLEDGED acknowledges an open finding, RESOLVED marks a finding not yet closed as patched, OPEN reopens it, and every member's copy of the alert follows; the answer names the finding under `finding`, and the alert's status is the one the API returns (ack_finding sets NOT_AFFECTED or SNOOZED). Scope: the inbox of the user the key belongs to, which for an organization API key is the organization owner's; an alert of another inbox reads as not found. Costs no request of the monthly quota.	No	No	Yes	No
`ack_finding`Set the status of one vulnerability-monitoring finding (an id like xfnd_…, from watch_domain, watch_dependencies or the Exposure page): ACKNOWLEDGED (seen, being handled), PATCHED (upgraded; the next read confirms it), NOT_AFFECTED (e.g. a distro backport fixed it), or SNOOZED until a date (at most 90 days; it reopens then). A finding reopens by itself when it enters CISA KEV or exploitation is reported. Changes nothing outside the caller's organization.	Set the status of one vulnerability-monitoring finding (an id like xfnd_…, from watch_domain, watch_dependencies or the Exposure page): ACKNOWLEDGED (seen, being handled), PATCHED (upgraded; the next read confirms it), NOT_AFFECTED (e.g. a distro backport fixed it), or SNOOZED until a date (at most 90 days; it reopens then). A finding reopens by itself when it enters CISA KEV or exploitation is reported. Changes nothing outside the caller's organization.	No	No	Yes	No
`check_indicator`The one tool for any single indicator: an IP address, domain, URL, file hash (MD5, SHA-1 or SHA-256; an imphash is looked up as an MD5), email address or phone number. Defanged input (hxxp://, [.], [@]) is accepted. Returns a verdict (malicious, suspicious, clean or unknown), a headline you can relay as is, recommendedAction (block, review, allow or unverified), a 0-100 risk score, the threat blocklists that cite it, up to three evidence reasons, first/last seen, and network, registration or file context. An email address or phone number is never called clean: not being in our sources is unknown / unverified; its answer adds the sender domain's reputation, disposable and MX facts, or the E.164 form of the number. `infrastructure` says what the entity is known as (cloud range, CDN, Tor exit, VPN, crawler, allowlist) without being a verdict. SHA-512, TLSH, ssdeep and input that is none of the six kinds (an address in a form the API cannot read, digits that are not a phone number, a number written with letters, a host that is not a dotted domain name) are refused before any request, at no cost. The default level, fast, answers from cached intelligence without a live DNS, WHOIS or OTX call (a hash nobody has cached may wait up to ~2.5 s on CIRCL); facets not cached yet are listed in meta.pending, and one re-check after a few seconds may complete them; if they are still pending then, keep the answer and do not re-check again. Costs one request of the monthly quota; check_url is the cheaper pre-fetch gate for a link.	The one tool for any single indicator: an IP address, domain, URL, file hash (MD5, SHA-1 or SHA-256; an imphash is looked up as an MD5), email address or phone number. Defanged input (hxxp://, [.], [@]) is accepted. Returns a verdict (malicious, suspicious, clean or unknown), a headline you can relay as is, recommendedAction (block, review, allow or unverified), a 0-100 risk score, the threat blocklists that cite it, up to three evidence reasons, first/last seen, and network, registration or file context. An email address or phone number is never called clean: not being in our sources is unknown / unverified; its answer adds the sender domain's reputation, disposable and MX facts, or the E.164 form of the number. `infrastructure` says what the entity is known as (cloud range, CDN, Tor exit, VPN, crawler, allowlist) without being a verdict. SHA-512, TLSH, ssdeep and input that is none of the six kinds (an address in a form the API cannot read, digits that are not a phone number, a number written with letters, a host that is not a dotted domain name) are refused before any request, at no cost. The default level, fast, answers from cached intelligence without a live DNS, WHOIS or OTX call (a hash nobody has cached may wait up to ~2.5 s on CIRCL); facets not cached yet are listed in meta.pending, and one re-check after a few seconds may complete them; if they are still pending then, keep the answer and do not re-check again. Costs one request of the monthly quota; check_url is the cheaper pre-fetch gate for a link.	Not declared	Yes	Yes	Yes
`check_indicators`Reputation of up to 100 indicators in one call, for triaging a list rather than one alert: IPs, domains, URLs, file hashes (MD5, SHA-1 or SHA-256), email addresses and phone numbers, mixed freely; defanged input is accepted. Each row: malicious, recommendedAction (block, escalate, review, monitor, allow, unverified; unverified means nothing is known either way, and an email address or phone number is never allow), risk 0-100 with level, the number of threat blocklists citing it, categories, lookupStatus, and `infrastructure` (cloud, cdn, tor-exit…) when the entity is known as such. A row with `pending` (e.g. ["circl"] for a hash whose lookup outlasted the API's deadline) is not settled: re-check it once, after a few seconds. A URL row is judged on its host. BILLING: every unique indicator the API receives charges one request of the monthly quota — unique after trimming and lowercasing, and including rows the API cannot type, which come back with an error. Exact duplicates are free; entries under 3 characters, SHA-512, TLSH and ssdeep, and input that is none of the six kinds (an address or a number in a shape the API cannot read, a number written with letters, a host that is not a dotted domain name) are refused here with a per-row error, never sent and never charged. Plans cap the batch below the tool ceiling (Free 10, Basic 50, Pro 100); over the cap the API refuses the whole batch. Use check_indicator for the full picture of one indicator.	Reputation of up to 100 indicators in one call, for triaging a list rather than one alert: IPs, domains, URLs, file hashes (MD5, SHA-1 or SHA-256), email addresses and phone numbers, mixed freely; defanged input is accepted. Each row: malicious, recommendedAction (block, escalate, review, monitor, allow, unverified; unverified means nothing is known either way, and an email address or phone number is never allow), risk 0-100 with level, the number of threat blocklists citing it, categories, lookupStatus, and `infrastructure` (cloud, cdn, tor-exit…) when the entity is known as such. A row with `pending` (e.g. ["circl"] for a hash whose lookup outlasted the API's deadline) is not settled: re-check it once, after a few seconds. A URL row is judged on its host. BILLING: every unique indicator the API receives charges one request of the monthly quota — unique after trimming and lowercasing, and including rows the API cannot type, which come back with an error. Exact duplicates are free; entries under 3 characters, SHA-512, TLSH and ssdeep, and input that is none of the six kinds (an address or a number in a shape the API cannot read, a number written with letters, a host that is not a dotted domain name) are refused here with a per-row error, never sent and never charged. Plans cap the batch below the tool ceiling (Free 10, Basic 50, Pro 100); over the cap the API refuses the whole batch. Use check_indicator for the full picture of one indicator.	Not declared	Yes	Yes	Yes
`check_url`Check a single URL, domain, or IP against threat intelligence before fetching it. Returns block \| warn \| allow. Use as a pre-fetch gate; use check_indicator when you need the full reputation picture (score, sources, timeline).	Check a single URL, domain, or IP against threat intelligence before fetching it. Returns block \| warn \| allow. Use as a pre-fetch gate; use check_indicator when you need the full reputation picture (score, sources, timeline).	Not declared	Yes	Yes	Yes
`exploited_cves`CVEs with attested exploitation in the last N days (default 7): confirmed (CISA KEV, CISA SSVC active, or two independent catalogues) or reported (one catalogue). Those first attested inside the window come first, then those only seen again in it; confirmed first in each. Each with severity, CVSS, EPSS, first and last exploitation evidence, KEV date, whether a patch exists, the sources, and how many indicators in our data were tagged with it this week (absent when unknown, never 0). Not in this list does not mean not exploited. Follow up with get_cve for one CVE. Costs one request of the monthly quota with a key; works without one (rate-limited by IP).	CVEs with attested exploitation in the last N days (default 7): confirmed (CISA KEV, CISA SSVC active, or two independent catalogues) or reported (one catalogue). Those first attested inside the window come first, then those only seen again in it; confirmed first in each. Each with severity, CVSS, EPSS, first and last exploitation evidence, KEV date, whether a patch exists, the sources, and how many indicators in our data were tagged with it this week (absent when unknown, never 0). Not in this list does not mean not exploited. Follow up with get_cve for one CVE. Costs one request of the monthly quota with a key; works without one (rate-limited by IP).	Not declared	Yes	Yes	Yes
`get_cve`One CVE by id: description, severity, CVSS score and vector, EPSS exploitation probability, CISA KEV status (date added, due date, required action, known ransomware use), exploitation evidence where recorded (CISA SSVC none/poc/active, Exploit-DB ids, Nuclei template, the number of Metasploit modules, Microsoft's exploited flag), affected packages with introduced and fixed versions (OSV.dev, first 5), vendor advisories (CSAF, first 3), external identifiers (GHSA, PYSEC, GO, EUVD ids, bundle advisories such as USN or RHSA, first 6), the products the CNA itself declares affected in the CVE record with their version ranges (often the only product data before NVD analyses a CVE; as many as fit), publication dates and references (NVD, KEV, EPSS, CERT-FR, GitHub advisories, Exploit-DB), and an attribution block: MITRE's CVE designation and licence and the NVD notice, to keep with any CVE text you reproduce, and the sources the answer draws on. Also takes an external id (GHSA-…, PYSEC-…, GO-…, RUSTSEC-…, EUVD-…, USN-…, RHSA-…, ALSA-…, a Metasploit module path…): one CVE comes back as its record with resolvedFrom, several as a list of candidate CVE ids to look up. No recorded exploitation evidence does not mean the CVE is not exploited. This is the only CVE lookup path; do not guess other routes. Costs one request of the monthly quota.	One CVE by id: description, severity, CVSS score and vector, EPSS exploitation probability, CISA KEV status (date added, due date, required action, known ransomware use), exploitation evidence where recorded (CISA SSVC none/poc/active, Exploit-DB ids, Nuclei template, the number of Metasploit modules, Microsoft's exploited flag), affected packages with introduced and fixed versions (OSV.dev, first 5), vendor advisories (CSAF, first 3), external identifiers (GHSA, PYSEC, GO, EUVD ids, bundle advisories such as USN or RHSA, first 6), the products the CNA itself declares affected in the CVE record with their version ranges (often the only product data before NVD analyses a CVE; as many as fit), publication dates and references (NVD, KEV, EPSS, CERT-FR, GitHub advisories, Exploit-DB), and an attribution block: MITRE's CVE designation and licence and the NVD notice, to keep with any CVE text you reproduce, and the sources the answer draws on. Also takes an external id (GHSA-…, PYSEC-…, GO-…, RUSTSEC-…, EUVD-…, USN-…, RHSA-…, ALSA-…, a Metasploit module path…): one CVE comes back as its record with resolvedFrom, several as a list of candidate CVE ids to look up. No recorded exploitation evidence does not mean the CVE is not exploited. This is the only CVE lookup path; do not guess other routes. Costs one request of the monthly quota.	Not declared	Yes	Yes	Yes
`list_alerts`One page of the isMalicious alert inbox (GET /alerts): the alerts raised on what the account watches, such as a watched domain or IP turning malicious or named on a ransomware leak site, certificate, WHOIS, location and infrastructure changes, lookalike domains, and vulnerability findings (cve.finding). Open and acknowledged alerts by default (set status to change that), most recent activity first; filters by severity, eventType, entityType and a search over title, description and value. Each alert: id (for ack_alert), type, severity, status, entity, title, description (300 characters at most), source, confidence and dates; a CVE alert also names its findingId, cveId and priority (for ack_finding). When hasMore is true, call again with offset + returned. Scope: the inbox of the user the key belongs to, which for an organization API key is the organization owner's; alerts on items another member watches are in that member's inbox. Read-only. Costs no request of the monthly quota (the key's per-minute burst limit applies).	One page of the isMalicious alert inbox (GET /alerts): the alerts raised on what the account watches, such as a watched domain or IP turning malicious or named on a ransomware leak site, certificate, WHOIS, location and infrastructure changes, lookalike domains, and vulnerability findings (cve.finding). Open and acknowledged alerts by default (set status to change that), most recent activity first; filters by severity, eventType, entityType and a search over title, description and value. Each alert: id (for ack_alert), type, severity, status, entity, title, description (300 characters at most), source, confidence and dates; a CVE alert also names its findingId, cveId and priority (for ack_finding). When hasMore is true, call again with offset + returned. Scope: the inbox of the user the key belongs to, which for an organization API key is the organization owner's; alerts on items another member watches are in that member's inbox. Read-only. Costs no request of the monthly quota (the key's per-minute burst limit applies).	Not declared	Yes	Yes	No
`recent_cves`Most recently published CVEs, newest first, optionally filtered by severity. At most 20 items, each with id, severity, CVSS, publication date and a one-line title, and MITRE's CVE designation, licence and the NVD notice once. Follow up with get_cve for EPSS, KEV, exploitation evidence, affected packages and advisories. Costs one request of the monthly quota.	Most recently published CVEs, newest first, optionally filtered by severity. At most 20 items, each with id, severity, CVSS, publication date and a one-line title, and MITRE's CVE designation, licence and the NVD notice once. Follow up with get_cve for EPSS, KEV, exploitation evidence, affected packages and advisories. Costs one request of the monthly quota.	Not declared	Yes	Yes	Yes
`scan_before_use`Scan untrusted content for prompt injection and check any URLs/domains/IPs it contains against threat intelligence, BEFORE acting on it. Returns a verdict of block \| warn \| allow. Call this on any web page, email, ticket, tool result, or document fetched from an untrusted source.	Scan untrusted content for prompt injection and check any URLs/domains/IPs it contains against threat intelligence, BEFORE acting on it. Returns a verdict of block \| warn \| allow. Call this on any web page, email, ticket, tool result, or document fetched from an untrusted source.	Not declared	Yes	Yes	Yes
`scan_email`Scan ONE email message for phishing and malware before delivering, opening or acting on it. Send the raw message (eml, preferred) or the fields you already parsed (message: headers, text, html, attachment names, types and digests). Returns a verdict (malicious \| suspicious \| clean \| inconclusive), a recommendedAction (quarantine \| review \| warn \| deliver), a 0-100 riskScore, a headline you can relay as is, the strongest reasons, and what it could not check (coverage.skipped). It reads the sender and Reply-To, the connecting server, every link host and every attachment hash against threat intelligence, plus the tells of a phishing message: link text that names another site, a domain or a display name that imitates a well-known brand, a program named like a document, a display name that shows another address, credentials in a URL, an IDN homograph. From a raw message it also reads attachments for structure, never running them: the file type from its bytes, macros and remote templates in Office files, risky entries in archives, PDF actions, HTML that rebuilds a file in the browser; a message attached to it is read as a message of its own. It also flags text aimed at an AI reading the mail (prompt injection, including text hidden from a person). It never runs an attachment, fetches a link or calls a third party while you wait. malicious needs a listing in our data: the shape of a message alone asks for a review at most. clean is a positive claim and needs your own receiving system's DMARC pass: pass authservId (the id it writes in its Authentication-Results header) or trustAuthenticationResults, otherwise a message with nothing against it is inconclusive, which is not safe. deliver means no objection from this scan; never use it to release a message another engine quarantined. Costs one scan of the scan meter per message, whatever its size (not a request of the monthly quota).	Scan ONE email message for phishing and malware before delivering, opening or acting on it. Send the raw message (eml, preferred) or the fields you already parsed (message: headers, text, html, attachment names, types and digests). Returns a verdict (malicious \| suspicious \| clean \| inconclusive), a recommendedAction (quarantine \| review \| warn \| deliver), a 0-100 riskScore, a headline you can relay as is, the strongest reasons, and what it could not check (coverage.skipped). It reads the sender and Reply-To, the connecting server, every link host and every attachment hash against threat intelligence, plus the tells of a phishing message: link text that names another site, a domain or a display name that imitates a well-known brand, a program named like a document, a display name that shows another address, credentials in a URL, an IDN homograph. From a raw message it also reads attachments for structure, never running them: the file type from its bytes, macros and remote templates in Office files, risky entries in archives, PDF actions, HTML that rebuilds a file in the browser; a message attached to it is read as a message of its own. It also flags text aimed at an AI reading the mail (prompt injection, including text hidden from a person). It never runs an attachment, fetches a link or calls a third party while you wait. malicious needs a listing in our data: the shape of a message alone asks for a review at most. clean is a positive claim and needs your own receiving system's DMARC pass: pass authservId (the id it writes in its Authentication-Results header) or trustAuthenticationResults, otherwise a message with nothing against it is inconclusive, which is not safe. deliver means no objection from this scan; never use it to release a message another engine quarantined. Costs one scan of the scan meter per message, whatever its size (not a request of the monthly quota).	Not declared	Yes	Yes	Yes
`search_indicators`Find the domains isMalicious lists that look like a brand or domain (e.g. "paypal", read as paypal.com, or "login.paypal.com"): typosquats, homoglyphs, the same name on other TLDs or hosting platforms, or wrapped in phishing words such as login or secure. The default API returns them most dangerous first, at most 500, with the searched name itself first when it is listed; other API bases can have different bounds. `total_hits` counts this API sample. `truncated: true` means results were omitted; `null` means completeness is unknown. An empty answer does not prove no lookalike exists: only listed domains are returned, and a name buried in a longer hostname is not matched. Follow up with check_indicator or check_indicators for verdicts. Cost: one request of the monthly quota, on the default https://ismalicious.com/api as on the Rust API host (https://api.ismalicious.com).	Find the domains isMalicious lists that look like a brand or domain (e.g. "paypal", read as paypal.com, or "login.paypal.com"): typosquats, homoglyphs, the same name on other TLDs or hosting platforms, or wrapped in phishing words such as login or secure. The default API returns them most dangerous first, at most 500, with the searched name itself first when it is listed; other API bases can have different bounds. `total_hits` counts this API sample. `truncated: true` means results were omitted; `null` means completeness is unknown. An empty answer does not prove no lookalike exists: only listed domains are returned, and a name buried in a longer hostname is not matched. Follow up with check_indicator or check_indicators for verdicts. Cost: one request of the monthly quota, on the default https://ismalicious.com/api as on the Rust API host (https://api.ismalicious.com).	Not declared	Yes	Yes	Yes
`watch_dependencies`Start vulnerability monitoring of a project from the text of its lockfile or SBOM: package-lock.json, composer.lock, requirements.txt, Gemfile.lock, Cargo.lock or a CycloneDX JSON SBOM (format detected when omitted). Each dependency is matched by version against OSV and NVD ranges; development dependencies are left out unless includeDev is true. Returns the source, the dependencies read (direct and transitive) and the findings already open, with priority and the version that fixes each. Uses one watched source of the plan; sending the same project name again replaces its file. Pass the file's content, not a path (at most 5 MiB).	Start vulnerability monitoring of a project from the text of its lockfile or SBOM: package-lock.json, composer.lock, requirements.txt, Gemfile.lock, Cargo.lock or a CycloneDX JSON SBOM (format detected when omitted). Each dependency is matched by version against OSV and NVD ranges; development dependencies are left out unless includeDev is true. Returns the source, the dependencies read (direct and transitive) and the findings already open, with priority and the version that fixes each. Uses one watched source of the plan; sending the same project name again replaces its file. Pass the file's content, not a path (at most 5 MiB).	No	No	No	Yes
`watch_domain`Start vulnerability monitoring of one public website: the API reads what the site exposes (Server and X-Powered-By headers, generator meta tag, versioned script paths, open ports) now and every day, matches each versioned component against CVEs, and alerts on what is exploited (P1 at once, P2/P3 in digests, per the organization's alert rules). Returns the source, the components read and the findings already open, with priority and fix. Uses one watched source of the plan (re-adding a watched domain returns the existing one and costs nothing). Only the public site is read; no scan beyond one page.	Start vulnerability monitoring of one public website: the API reads what the site exposes (Server and X-Powered-By headers, generator meta tag, versioned script paths, open ports) now and every day, matches each versioned component against CVEs, and alerts on what is exploited (P1 at once, P2/P3 in digests, per the organization's alert rules). Returns the source, the components read and the findings already open, with priority and fix. Uses one watched source of the plan (re-adding a watched domain returns the existing one and costs nothing). Only the public site is read; no scan beyond one page.	No	No	Yes	Yes

Details

Registry status: Active
Published: Oct 23, 2026
Updated: Oct 23, 2026
Website: https://ismalicious.com/prompt-injection-scanner⁠ (opens in a new tab)
Repository: https://github.com/hexablob/ismalicious-mcp-server⁠ (opens in a new tab)
Categories (suggested): SecuritySuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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