leakcheck.io valid

LeakCheck API

For agents: REST API for searching billions of leaked records (emails, usernames, phones, domains, infostealer logs); Pro API v2 docs and a free breach-source lookup.

breach lookupleaked credentialsrest apiinfo-stealer logsemail search

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-24T00:32:56.963Z. Cached copy · Source on leakcheck.io

# LeakCheck API

- [Overview](https://docs.leakcheck.io/overview.md): REST API for searching 10B+ leaked records — emails, usernames, phones, domains and info-stealer logs.
- [Authentication](https://docs.leakcheck.io/authentication.md): How to authenticate requests to the LeakCheck Pro API v2.
- [Errors & rate limits](https://docs.leakcheck.io/errors.md): Error responses of the LeakCheck API and the request-rate limits that apply.
- [Lookup](https://docs.leakcheck.io/pro-api/lookup.md): Query the Pro API v2 for full breach records by email, username, phone, domain and more.
- [Search types](https://docs.leakcheck.io/pro-api/search-types.md): Everything you can search by with the Pro API v2, and when a type must be set explicitly.
- [Migrate from v1](https://docs.leakcheck.io/pro-api/migrate-from-v1.md): What changed between the legacy API v1 and the Pro API v2.
- [Lookup](https://docs.leakcheck.io/public-api/lookup.md): Free breach-source lookups by email, email hash or username — no API key required.
- [Pro lookup](https://docs.leakcheck.io/api-reference/pro-api-v2/pro-lookup.md): Search full breach records by email, username, phone number, domain, hash and more. Requires an [API key](https://docs.leakcheck.io/authentication) passed either in the `X-API-Key` header (recommended) or as the `?key=` query parameter.
- [Public lookup](https://docs.leakcheck.io/api-reference/public-api/public-lookup.md): Free, unauthenticated lookup. Returns which breaches an identifier appears in and which data categories were exposed — never the values themselves. Use the Pro API for full records. Rate limited to 1 request per second.
- [Python wrapper](https://docs.leakcheck.io/tools/python-wrapper.md): Official Python package for the LeakCheck API — supports both the Pro API v2 and the Public API.
- [CLI tool](https://docs.leakcheck.io/tools/cli.md): Query the LeakCheck API straight from your terminal with the leakcheck command.

## OpenAPI Specs

- [openapi](https://leakcheck.io/openapi.json)


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Machine-readable: GET /v1/resolve?q=leakcheck.io · GET /v1/domain/leakcheck.io · this page as Accept: application/json or text/markdown · MCP lookup_domain

Automatically discovered from public files. Inclusion does not imply endorsement or publisher participation.

Claim my listing on Agent Web Map for leakcheck.io:
1. POST https://agentwebmap.com/v1/sites/leakcheck.io/claims and keep claim_id and claim_secret private.
2. Publish the proof: add the line "AgentWebMap ownership: <token>" (token from step 1) to https://leakcheck.io/llms.txt, or use the DNS, meta-tag or well-known method the response describes.
3. POST https://agentwebmap.com/v1/sites/leakcheck.io/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/leakcheck.io).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

Corrections or removal requests: contact the directory.