Excession Labs: CVE intelligence and security research

ai.excessionlabs/siteVersion 1.3.0

Search CVEs, source software/version evidence, KEV, EPSS and public security research.

Status

Responds645 msNov 14, 2026, 13:29 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Registry data may be out of date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, 13:29 UTC
Latency: 645 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
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://excessionlabs.ai/mcpResponds645 msNov 14, 2026, 13:29 UTC

No sign-in

Claude Code

claude mcp add --transport http site https://excessionlabs.ai/mcp

Claude Desktop and claude.ai

1
2
3

Settings > Connectors > Add custom connector
Name: site
Remote MCP server URL: https://excessionlabs.ai/mcp

Cursor

{
  "mcpServers": {
    "site": {
      "url": "https://excessionlabs.ai/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"site","type":"http","url":"https://excessionlabs.ai/mcp"}'

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Tools

10 tools

Tools of Excession Labs: CVE intelligence and security research
	Description		Read-only	Idempotent	Open world
`cve_changes`Read hosted changes after a saved sequence cursor. Process the page before resuming with next_after. This is a read-only feed; it does not create a notification subscription.	Read hosted changes after a saved sequence cursor. Process the page before resuming with next_after. This is a read-only feed; it does not create a notification subscription.	No	Yes	Yes	No
`cve_get`Read a CVE's descriptions, severity, affected software/version evidence, source references, KEV and EPSS. Large affected-software lists are paginated; inspect the returned cursor and completeness fields.	Read a CVE's descriptions, severity, affected software/version evidence, source references, KEV and EPSS. Large affected-software lists are paginated; inspect the returned cursor and completeness fields.	No	Yes	Yes	No
`cve_history`Read normalized source revisions retained after hosted monitoring starts. Version claims can refer to shared affected_groups by group_id. Initial hosted observations establish a baseline; the initial snapshot is not a complete historical archive. Inspect returned coverage and pagination.	Read normalized source revisions retained after hosted monitoring starts. Version claims can refer to shared affected_groups by group_id. Initial hosted observations establish a baseline; the initial snapshot is not a complete historical archive. Inspect returned coverage and pagination.	No	Yes	Yes	No
`cve_search`Search the hosted Excession Labs CVE database. Choose recent modification, new publication, or known-exploitation priority. Software/version filters match source assertions; they do not evaluate whether an installation is affected.	Search the hosted Excession Labs CVE database. Choose recent modification, new publication, or known-exploitation priority. Software/version filters match source assertions; they do not evaluate whether an installation is affected.	No	Yes	Yes	No
`cve_sources`Read the hosted source catalog, attribution, update methods and coverage limits.	Read the hosted source catalog, attribution, update methods and coverage limits.	No	Yes	Yes	No
`cve_status`Read corpus counts, source coverage, collection errors, freshness and saved update checkpoints. A successful bounded query does not imply complete upstream coverage.	Read corpus counts, source coverage, collection errors, freshness and saved update checkpoints. A successful bounded query does not imply complete upstream coverage.	No	Yes	Yes	No
`get_page`Read one public page of excessionlabs.ai as Markdown. Use a path from search_site or llms.txt.	Read one public page of excessionlabs.ai as Markdown. Use a path from search_site or llms.txt.	No	Yes	Yes	No
`how_to_contact`Return the ways a person can contact Excession Labs: the request form, email, and the request_security_test tool for agents.	Return the ways a person can contact Excession Labs: the request form, email, and the request_security_test tool for agents.	No	Yes	Yes	No
`request_security_test`Send a request for a security test (web application, API, multi-tenant SaaS isolation or AI application) to Excession Labs on behalf of a person who asked for it. Needs an agent key (POST https://excessionlabs.ai/agent/auth, then Authorization: Bearer <key>). Excession Labs replies to the person by email to agree scope; testing starts only after a written scope and written authorization from the system owner. Never include passwords, API keys or customer data. Limits: 5 requests a day per key, 3 a day per email address.	Send a request for a security test (web application, API, multi-tenant SaaS isolation or AI application) to Excession Labs on behalf of a person who asked for it. Needs an agent key (POST https://excessionlabs.ai/agent/auth, then Authorization: Bearer <key>). Excession Labs replies to the person by email to agree scope; testing starts only after a written scope and written authorization from the system owner. Never include passwords, API keys or customer data. Limits: 5 requests a day per key, 3 a day per email address.	No	No	No	Yes
`search_site`Search the public pages and research notes on excessionlabs.ai. Returns titles, URLs and one-line summaries.	Search the public pages and research notes on excessionlabs.ai. Returns titles, URLs and one-line summaries.	No	Yes	Yes	No

Details

Registry status: Active
Published: Nov 12, 2026
Updated: Nov 12, 2026
Website: https://excessionlabs.ai/cve-intelligence/⁠ (opens in a new tab)
Repository: Not given
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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