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certindex

certindex-mcp

Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault
CERTINDEX_API_KEYYesYour CertIndex API key. Mint one at https://ctindex.io/app/keys
CERTINDEX_TIMEOUTNoPer-request HTTP timeout (seconds)30
CERTINDEX_BASE_URLNoOverride for self-hosted deployments / staginghttps://api.ctindex.io

Capabilities

Features and capabilities supported by this server

CapabilityDetails
tools
{
  "listChanged": false
}
prompts
{
  "listChanged": false
}
resources
{
  "subscribe": false,
  "listChanged": false
}
experimental
{}

Tools

Functions exposed to the LLM to take actions

NameDescription
search_certificatesA

Search the CT certificate index by domain, CN, issuer, SAN, validity, or wildcard status. Returns a has_more boolean for paging (no unbounded COUNT).

get_certificateA

Fetch a single cert by its 64-char hex SHA-256 fingerprint.

Set include_enrichment=true to attach RDAP + DNS + ASN/hosting context for the cert's primary hostname under enrichment.

get_domain_certificatesA

List certificates for an exact domain name. Cold domains return a backfill_status sentinel; retry per the hint.

Set include_enrichment=true to attach RDAP + DNS + ASN/hosting context for the domain under enrichment.

get_subdomainsB

Enumerate unique subdomains seen in CT logs.

get_latest_certA

Most recently issued cert for a domain (or {cert: null} with a backfill sentinel on cold domains).

Set include_enrichment=true to attach RDAP + DNS + ASN/hosting context for the domain under cert.enrichment.

get_expiring_certsB

Certificates for domain expiring within days days.

Prompts

Interactive templates invoked by user choice

NameDescription

No prompts

Resources

Contextual data attached and managed by the client

NameDescription

No resources

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