Researcher Access Only
leaksear.chBreach research for vetted security researchers.
Review public and private leak sources collected through vetted submissions and automated extraction, validated before ingestion, and built for incident response, threat intel, and trust & safety investigations.
Incident responseThreat intelligenceTrust & safety
Access is reviewed. Approved accounts start with 25 monthly credits and API or MCP access.
6.8B+
Indexed records
718
Tracked leak sources
Index Preview
Recently indexed sources with record counts up front
Indexed records
6.8B+
Leak sources tracked
718
Atmeltomo
Indexed May 31, 2026
579.9K+ records
Searchable
dateOfBirthemailhashedPasswordipAddress+2
Other in records
bio
Coverage At A Glance
Enough visibility to judge breach coverage quickly
0+
Indexed Records
0
Tracked Leak Sources
Indexed Sources
Indexed sources for active investigations
Source metadata shows record volume, indexed date, and searchable fields before researchers run a search. Public and private datasets are validated before they are added to the index.
Research Workflow
Designed for validation, triage, and response
Use validated source coverage, field-aware search, and reviewed access to move from exposure checks into response work.
Coverage Before Search
See source names, record counts, and indexed dates before deciding whether to run a deeper search.
Validated Source Intake
Public and private leak sources come from vetted researcher submissions and automated extraction, then pass provenance and structure checks before ingestion.
Field-Level Validation
Search by email, email wildcard, username, phone, IP, password hash, and other exposed fields when the dataset supports it.
Casework Workflow
Move from raw exposure checks into triage, reporting, and follow-up without leaving the platform.
Vetted Access Model
Accounts are reviewed so the tool stays aligned with legitimate security research and response work.
Documented API and MCP
Use API reference docs and MCP setup guides to plug breach checks into internal research tooling.
Research Stack
Bring breach checks into the rest of your workflow
Approved accounts can use the web app, documented REST API, and MCP server from the same reviewed access model.
MCP Clients
Query breach context from Claude Desktop, Claude Code, Cursor, and other MCP-compatible clients with an approved account token.
Documented REST API
Use the OpenAPI reference for authentication, search requests, pagination, and response schemas.
FAQ
Questions researchers usually ask first
Access review, source coverage, credits, and workflow details before you request an account.
Researcher Access
Request access for your research workflow
leaksear.ch is reviewed-access only. Tell us what you investigate and approved accounts start with 25 monthly credits plus API or MCP access.