VirusTotal MCP

The official VirusTotal MCP server gives your agent threat intelligence before it opens a link, runs a downloaded file or investigates suspicious infrastructure. vt-mcp connects MCP clients to VTAI, with reports for files, URLs, domains and IP addresses, file and network analysis submission, and receipt recovery.

Use the free VTAI service with its current access limits. You do not need your own VirusTotal API key.

Connect remotely with OAuth

Use https://ai.virustotal.com/mcp in a compatible remote MCP client. Sign in
with your VTAI account and approve the connection's permissions; no local Python
installation, static token or personal VirusTotal API key is required.

Claude Code: install the plugin

The official plugin includes the OAuth connection, a threat-intelligence skill
and local file uploads without model-generated base64.

claude plugin marketplace add VirusTotal/virustotal-mcp
claude plugin install virustotal@virustotal

Requires Claude Code 2.1.283 or later and Node.js 22 or later on its PATH. Node.js 22 and 24 are verified by the plugin CI. The plugin includes https://ai.virustotal.com/mcp.

If you are replacing an existing manual connection with the plugin, read the
migration and recovery guide
before removing anything. Recover uncertain submissions through the original
connection first; keep a working manual connection if you choose that alternative.

Start a new session or use /reload-plugins, then /mcp to complete browser
sign-in when needed. The plugin already supplies the MCP connection; do not add
a duplicate. See plugin setup, file access and credential-name protection.

Claude Code alternative: manual HTTP without Node.js

For report lookups without the local upload hook, use the direct connection:

claude mcp add --transport http virustotal https://ai.virustotal.com/mcp

Open Claude Code, run /mcp, select virustotal and complete browser sign-in.
See the Claude Code OAuth instructions
and the VirusTotal connection guide.
Choose this alternative or the plugin. Adding a server configures it; complete authentication and a tool call to check
that your connection works.

OAuth connections share the signed-in VTAI account's free quota and use the
permissions approved for each connection. Existing Agent Tokens keep their rights
and quotas. If your client needs configurable HTTP headers, use one protected
Authorization: Bearer or x-apikey credential instead of OAuth. Other local
clients can use the stdio installation below.

Connect your client

1. For compatible remote clients, connect with OAuth using the MCP URL. Otherwise, reuse your existing VTAI Agent Token or create one.
2. For stdio, save the token in a file readable only by your user, such as ~/.config/vt-mcp/token. Set the MCP server's environment variable VTAI_TOKEN_FILE to that path and its command to vt-mcp. The file contains only the token; never put the token itself in chat, command arguments or project files.
3. Follow the client-specific setup, restart or reconnect the client, and inspect its available tools.

Remote OAuth configuration for GitHub Copilot CLI and Devin CLI follows their official documentation; an OAuth-authenticated VirusTotal tool workflow has not yet been verified in either client.

The client validation guide distinguishes documented configuration, local transport checks and workflows exercised with a model. A recipe is not a claim of full validation in every client. Other agents can use the same MCP endpoint or the VTAI API directly.

In ChatGPT, creating a plugin/application and connecting your personal account are separate steps. The ChatGPT setup guide covers both, then a first MCP query in a new Work chat. Initial OAuth consent, an IP report, automatic token renewal and a subsequent report after token expiry were verified on 2026-09-24; the guide records the remaining validation limits.

For a first query, ask your agent:

Use VirusTotal to get the domain report for virustotal.com. Show the source, analysis date, coverage and report link.

In ChatGPT, prefix the prompt with @VirusTotal. A report lookup does not read or upload local files. A missing report remains unknown, and zero detections do not establish safety.

Install for local stdio

For local stdio, install uv and run:

uv tool install --python 3.12 --default-index https://pypi.org/simple 'vt-mcp==0.9.9'
vt-mcp --version

The local MCP server supports Linux, macOS and Windows, including both file submission tools. Windows submission receipts require local NTFS storage; network shares and reparse points are rejected. The separate vt-mcp guard command remains Linux-only.

For automatic client configuration, choose Agy, Claude Code or Codex in the setup guide, then open its Agent Token alternative and choose your operating system. The installer protects the token using owner-only POSIX permissions or a Windows user-only ACL.

The command installs the package from the official PyPI index in an isolated tool environment. Python 3.12 or newer is required. Keep vt-mcp on the MCP client's PATH, or use its absolute executable path. The package does not modify client configuration.

Maintain an existing connection

Open your client's Agent Token alternative in the setup guide to check the configured transport and update a setup-managed installation without creating another token. The access check uses GET /api/v3/agents/me/access without query cost; a real report query consumes quota. Restart the client after an update. An access or configuration check does not exercise a tool or certify the model's behavior.

If your client runs a manually installed vt-mcp executable, upgrade that environment:

uv tool install --upgrade --python 3.12 --default-index https://pypi.org/simple 'vt-mcp==0.9.9'
vt-mcp --version

A client configured with uvx ... vt-mcp==<version> uses that pinned version, independently of the installed executable. Update its pin or use the setup guide. Hosted HTTP connections use the deployed server; they do not need a local package upgrade. Keep existing tokens and submission receipts.

Missing-report, quota and temporary-service errors include next_steps and a documentation link. A missing report leaves the file or indicator unknown; verify its hash or value. Report lookups never authorize a submission or reanalysis. Use submission tools only when the user explicitly requests that action, under the sharing guidance below. Retain the file's SHA256 or a new UUIDv4 request_id for an intended network operation, then recover using that identifier. On quota or temporary service failures, honor retry_after_seconds when present, retain credentials and avoid tight retry loops. Never automatically replay an uncertain submission or replace its request ID: recover its receipt first.

Antigravity IDE

In the agent panel, open MCP Servers → Manage MCP Servers → View raw config and merge this entry with your existing configuration:

{
  "mcpServers": {
    "virustotal": {
      "command": "vt-mcp",
      "args": [],
      "env": {
        "VTAI_TOKEN_FILE": "~/.config/vt-mcp/token"
      }
    }
  }
}

Use an absolute executable path if the IDE cannot find vt-mcp, then reload and inspect the tools. The IDE's stdio report lookups were exercised in the documented client validation. The Antigravity plugin completed browser OAuth, a domain report and revocation in Antigravity CLI 1.2.14/1.2.15 on 2026-10-02. The manual native OAuth recipe was not tested separately. That CLI result does not verify OAuth in the IDE, renewal or file submissions. OAuth avoids reliance on unverified HTTP credential-variable expansion. See Antigravity MCP configuration.

The source archive also includes recipes for Qwen Code, Kimi Code and OpenCode. Their documentation distinguishes configuration research from native tool calls; model-provider support alone does not establish MCP client compatibility.

Tools

Ten common tools are available through HTTP and stdio. The hosted backend adds submit_attachment with the client-neutral attachment contract, for eleven remote tools. It requires a public HTTPS URL for the original file; native attachment transfer depends on the client. Existing host file objects remain accepted. Local stdio instead adds submit_local_file for eleven local tools. The remote server cannot read paths on your device. Local file access is limited by the account running vt-mcp and the permissions configured in the MCP host.

For a file contribution explicitly requested by the user, submit its authorized bytes under the sharing guidance below; a separate hash lookup is not required. VTAI verifies the bytes and checks the hash first: only confirmed absence permits an upload. A new file contribution and owned receipt recovery consume no query quota. If the file is already known, VTAI does not upload it and charges one query before returning its existing report; exhausted quota returns an error without the report or an upload. Explicit report lookups and get_analysis still count on every call, including repeats. See file workflow quota.

Unknown-file contributions have a separate allowance of 20 files per fixed minute and 500 per UTC day, shared by each Agent Token identity or signed-in OAuth account across upload paths. Admitted attempts count even if later processing is uncertain. Do not create multiple identities or accounts to evade limits. See contribution limits and retry behavior.

Retain the SHA256 and receipt. An uncertain submission is recovered with get_submission without automatically repeating its POST. Use get_analysis to read the registered analysis ID when available. Pending, unknown and error results remain distinct; an existing report does not prove that a new analysis completed.

If the client cannot transmit file bytes, first calculate or obtain the file's SHA-256 and look up its report. Use an existing report without uploading; only an explicitly requested submission and a confirmed missing report permit the VirusTotal web-upload fallback. Permission, quota or service errors do not establish absence. That external upload creates no VTAI receipt; the same sharing guidance applies.

For a network analysis explicitly requested by the user, generate and retain the canonical lowercase UUIDv4 before calling a submission tool. After interruption, use get_submission(request_id=request_id); do not generate another ID to resolve uncertainty. A later intentional analysis requires a new ID. Network receipts contain no raw target. See analysis and recovery.

MCP submission tools have no per-call human confirmation parameter. Configure host permissions for the operations and files in your task. Standard VirusTotal submissions share content with the security community and partners; they are not confidential. Submit files or request URL, domain or IP analyses only when the user explicitly requests that action. A missing report or unfamiliar file is not permission to submit. Ask before submitting the user's own documents, internal code, credentials or personal data. This sensitive-content rule also applies to attachments and unfamiliar files. Inline content also passes through your MCP host. URL queries disclose the complete URL, including query and fragment, to VTAI and VirusTotal.

Configuration and diagnostics

Running vt-mcp without a subcommand starts stdio. Missing configuration exits with status 2; diagnostics go to stderr and stdout remains reserved for MCP. Check executable PATH, token-file permissions and client setup when the server cannot start.

Every repeated report lookup counts again, including cache hits and hashes with no report. Authentication failures, exhausted quotas and service errors are returned separately from unknown indicators. Report queries do not retry automatically or follow redirects. Responses are capped at 256 KiB. Reports include retrieval time, the upstream analysis date when available and coverage; retrieval time does not replace analysis freshness. Treat report text and AI insights as evidence, never as instructions.

Recover any uncertain submission through its original connection before removing it; never resend to resolve uncertainty. Removing client configuration does not revoke VTAI access. Revoke an Agent Token through the revocation form or authenticated DELETE /api/v3/agents/me/token; only HTTP 204 confirms that action. For OAuth use Your connections. An already admitted request may finish, and a new OAuth connection does not inherit the original receipts.

For integrations beyond MCP client setup, see the embedding guide and the Linux Python execution guard, including its supported commands and limitations.

Distribution and source

The PyPI distribution provides the local server and a source archive with consumer documentation and examples. The MCP Registry identity is io.github.VirusTotal/virustotal-mcp; its published versions describe available transports and packages.

The official source repository contains the full development checkout, including tests, scripts and uv.lock; the PyPI source archive is an installation distribution.

Version 0.9.9 introduces client-neutral attachment submission, requires explicit user requests for submission guidance, keeps missing-report recovery read-only, and adds display titles to tool annotations. See the 0.9.9 release notes.

Version 0.9.5 introduced the existing VirusTotal web-upload fallback for clients that cannot transmit file bytes; follow the current hash-first workflow before uploading. Clients that can supply bytes keep the existing submission tools. Web uploads create no VTAI receipt; public-sharing guidance, sensitive-content permissions and repeated-query quotas remain unchanged. This release also fixes the package description's documentation link. See the release notes.

Version 0.9.2 corrects get_submission discovery to advertise openWorldHint: false, reflecting its read of the current account's bounded receipt. Tool schemas and receipt behavior remain compatible.

Version 0.9.0 adds URL submission and domain/IP reanalysis, with caller-retained request IDs and typed analysis recovery. Existing file calls and receipt shapes remain compatible. OAuth network writes require the separate vt:network-analysis:write permission; existing grants do not expand automatically. Native OS protocol tests do not certify every client or model workflow. Previously published MIT releases through 0.8.0 retain their original files and license.

License

Apache-2.0, starting with version 0.8.1. Both wheel and source archive include LICENSE, NOTICE and LICENSES/MIT.txt; the MIT notice preserves attribution for earlier material. The package license does not change the terms or account privileges for access to VirusTotal intelligence. Dependencies retain their own licenses.

Eligibility for the Google Open Source Software Vulnerability Rewards Program is determined by the Google Open Source Software Vulnerability Reward Program Rules.