Skip to content
verify mcp Beta VerifyMCP is currently in beta. If you notice any issues, get in touch and we’ll put it right.

data-breach-detector

REMOTE · BREACH.SEICHE.INFO · 2 COMPONENTS · SCANNED SEP 21

Read-only breach intel, full history 2007-today: reports THAT an org was breached, never the data.

0 this week 80 Trust /100
Trust breakdown (7 categories)

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →

Endpoint Security60
Transport & Reachability100
Schema Quality & AI Usability78
  • 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
  • AI-judged instruction clarity (excellent).Pass
  • Context-footprint check failed: tool/resource definitions use about 2091 tokens (~298/item across 7 items; 7 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
  • No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
Tool Safety100
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
  • An AI judge read all 8 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
  • Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Install

How do I install the data-breach-detector MCP server?

data-breach-detector is a hosted endpoint at https://breach.seiche.info/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

remote · breach.seiche.info

# add to Claude Code
claude mcp add --transport http beepboop2025-data-breach-detector 'https://breach.seiche.info/mcp'
// .cursor/mcp.json
{
  "mcpServers": {
    "beepboop2025-data-breach-detector": {
      "url": "https://breach.seiche.info/mcp"
    }
  }
}
// .vscode/mcp.json
{
  "servers": {
    "beepboop2025-data-breach-detector": {
      "type": "http",
      "url": "https://breach.seiche.info/mcp"
    }
  }
}
# ~/.codex/config.toml
[mcp_servers.beepboop2025-data-breach-detector]
url = "https://breach.seiche.info/mcp"
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "beepboop2025-data-breach-detector": {
      "type": "remote",
      "url": "https://breach.seiche.info/mcp",
      "enabled": true
    }
  }
}
# add to OpenClaw
openclaw mcp add beepboop2025-data-breach-detector --url 'https://breach.seiche.info/mcp' --transport streamable-http
# ~/.hermes/config.yaml
mcp_servers:
  beepboop2025-data-breach-detector:
    url: "https://breach.seiche.info/mcp"
// ~/.netclaw/config/netclaw.json
{
  "McpServers": {
    "beepboop2025-data-breach-detector": {
      "Transport": "http",
      "Url": "https://breach.seiche.info/mcp"
    }
  }
}
# add to Vellum
assistant mcp add beepboop2025-data-breach-detector -t streamable-http -u 'https://breach.seiche.info/mcp'
// mcp.json
{
  "mcpServers": {
    "beepboop2025-data-breach-detector": {
      "type": "http",
      "url": "https://breach.seiche.info/mcp"
    }
  }
}

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 26 Aug 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 25 Aug 26 +1
    • Stability: 0.97 → pass security
  • 23 Aug 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.

  • 16 Aug 26 0
    • Server version: 0.3.1 → 0.3.2 functional
  • 11 Aug 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 7 Aug 26 0
    • The server no longer declares the “experimental” capability functional
  • 2 Aug 26 0
    • Schema quality: 181 → 298 functional
    • Schema quality: excellent → unverified functional
    • First check of Schema quality: 100 functional
  • 1 Aug 26 0
    • Tool “feed_sources” rewrote its description, which is the text the model reads security
    • Tool “breach_news” rewrote its description, which is the text the model reads security
    • Tool “check_exposure” rewrote its description, which is the text the model reads security
    • Schema quality: 134 → 181 functional
    • Schema quality: 134 → 178 functional
    • New tool “breach_timeline” functional
    • New tool “breach_history” functional
    • New tool “breach_stats” functional
    • “breach_news” added an optional parameter “source” cosmetic
    • “breach_news” reworded the description of “limit” cosmetic
    • “breach_history” reworded the description of “limit” cosmetic
    • “breach_news” reworded the description of “sector” cosmetic
Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 20 Sept 2026 · Probed https://breach.seiche.info/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=breach.seiche.info CN=YE1,O=Let's Encrypt,C=US 10 Sept 2026 9 Dec 2026 ECDSA 256 ECDSA-SHA384 616887afc4c013a75c86be4549a4b884186
SANs: breach.seiche.info
CN=YE1,O=Let's Encrypt,C=US (CA) CN=Root YE,O=ISRG,C=US 3 Sept 2025 2 Sept 2028 ECDSA 384 ECDSA-SHA384 5ddd70dd31f801c85c186a7a04b80afe
CN=Root YE,O=ISRG,C=US (CA) CN=ISRG Root X2,O=Internet Security Research Group,C=US 13 May 2026 2 Sept 2032 ECDSA 384 ECDSA-SHA384 872165fc34b6e5fba8add5b3705fb53a
CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) CN=ISRG Root X1,O=Internet Security Research Group,C=US 13 May 2026 2 Sept 2032 ECDSA 384 SHA256-RSA 6c8f1dc727c7117f7baf853ac980f9cd

Background: What to check on a remote MCP endpoint →

DNSSEC secure

Validation of breach.seiche.info. Secure

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
info. present 5104 8 Verified
seiche.info. present 2371 13 Verified
breach.seiche.info. Verified address RRset verified with the apex keys
Authentication No authorisation required

The endpoint answered without asking for a token. Anyone who knows the URL can reach it.

Result No authorisation required
HTTP status 200

Background: How OAuth 2.1 works in the 2026 MCP spec →

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://breach.seiche.info/mcp Verified 200
http (plaintext) http://breach.seiche.info/mcp HTTPS enforced 308 https://breach.seiche.info/mcp
MCP tools · 7 exposed · ~1,594 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →

Tool Tokens
assess_threat ~114

Classify a piece of security text you supply — an advisory, alert or forum post — into a threat level, matched categories, financial-target flags, a confidence score and a recommended action. Pure local analysis: it collects nothing, stores nothing and reaches no network; the text never leaves the server. Use it to triage findings surfaced by breach_news or from your own monitoring.

NameTypeReqDescription
textstringyesthe security text to classify — an advisory, alert or forum post

No output schema declared.

No examples provided.

breach_history ~361

Search the FULL historical breach archive — every incident this server knows about, back to 2007: HaveIBeenPwned's verified breach directory, the 2020-2025 ransomwatch leak-site archive (~16k victims), the RansomLook live tracker and SEC 8-K Item 1.05 filings. Filter by keyword, year range, sector, exposed data type or minimum scale; order by date or size. Returns disclosure metadata only, never breach contents. Use this for questions like 'what were the biggest breaches of 2013' or 'which airlines have ever been hit by ransomware'.

NameTypeReqDescription
data_typerequire an exposed data type, e.g. 'passwords', 'credit card', 'health'
limitintegermaximum incidents to return (default 10; raise it deliberately, large pages are heavy for an agent loop)
min_accountsintegeronly incidents exposing at least this many accounts
offsetintegerhow many matching incidents to skip before the page starts; count can run to five figures over the ~16k-post archive, so this is how the tail is reached
orderstring'newest' (default), 'oldest' or 'largest' (by accounts exposed)
queryoptional keyword over entity, title, summary, actor and data types; omit to browse the whole archive
sectorindustry keyword filter, e.g. 'bank', 'health', 'gaming'
year_fromearliest incident year to include, e.g. 2013
year_tolatest incident year to include, e.g. 2020

No output schema declared.

No examples provided.

breach_news ~289

Read recent breach and ransomware DISCLOSURES from public threat-intel feeds (HaveIBeenPwned, the RansomLook live leak-site tracker and SEC 8-K Item 1.05 filings), newest first. Every row is metadata only — entity, date, scale, exposed data TYPES, threat level and source — never the leaked data, and a redaction pass strips anything credential-shaped before it is returned. Use sector to narrow to an industry keyword; for one specific organization use check_exposure; for all-time history use breach_history.

NameTypeReqDescription
limitintegermaximum disclosures to return (default 10; raise it deliberately, large pages are heavy for an agent loop)
offsetintegerhow many matching disclosures to skip before the page starts; with limit this walks a result set larger than any single page (count reports the full total)
sectoroptional keyword filter over entity, title, summary, categories and exposed data types, e.g. 'bank', 'health', 'crypto'
since_daysintegerlook-back window in days over disclosure dates (default 30)
sourceoptional source filter: 'HaveIBeenPwned', 'RansomLook', 'ransomwatch-archive' or 'SEC EDGAR 8-K 1.05'

No output schema declared.

No examples provided.

breach_stats ~195

Aggregate the full breach archive into analyst-grade statistics: incidents and accounts exposed per year, per source, per exposed data type, per threat level, or per ransomware actor — plus the five largest incidents ever recorded. Use it to answer 'how has breach volume trended since 2015', 'which ransomware groups have the most victims' or 'how often are passwords part of a breach'. Aggregate counts only; no leaked records.

NameTypeReqDescription
group_bystringaggregation axis: 'year' (default), 'source', 'data_type', 'threat_level' or 'actor' (ransomware group)
limitintegerhow many buckets to return, largest first (default 40); buckets_total reports how many exist, and grouping by actor over the ~16k-post archive produces far more
sectoroptional industry keyword filter applied before aggregating

No output schema declared.

No examples provided.

breach_timeline ~265

Build the incident-by-incident CHRONOLOGY of one organization across every source and all history, with judgment on top: first and latest incident, incidents per year, whether the organization is a repeat victim, worst threat level and total accounts ever exposed. Those summary fields cover EVERY incident on record. The timeline list carries a window of them, oldest first within the window, defaulting to the most recent limit incidents and paging backwards with offset, so an organization with a long history shows its current state first rather than only its ancient one. Repeat victimhood is a forward-looking risk signal: organizations named more than once have demonstrably not closed the gap. Metadata only; never the leaked data. For a yes/no presence check use check_exposure.

NameTypeReqDescription
entitystringyesdomain, company or brand to build the chronology for, e.g. 'yahoo.com' or 'Adobe'
limitintegerhow many incidents the timeline list carries (default 12); the counts, span and judgment always cover every incident
offsetintegerpages backwards through the chronology from the recent end: 0 gives the newest window, 12 gives the window before that

No output schema declared.

No examples provided.

check_exposure ~262

Answer whether a domain, company or brand appears in public breach or ransomware DISCLOSURES across ALL history (2007 → today): yes/no with mention count, worst threat level, total accounts exposed across matches, the exposed data TYPES, and the matching disclosure metadata — never the exposed records themselves. This is a triage signal built from disclosure feeds, not proof of compromise; confirm through authorized channels before acting. For the incident-by-incident chronology of one entity, use breach_timeline; for a recent-news sweep, use breach_news. mentions, the aggregates and the data types always cover every match; matches carries one page of them, sized by limit and walked with offset.

NameTypeReqDescription
limitintegermaximum matching disclosures to return (default 8; the mention count and the aggregates always cover every match)
offsetintegerhow many matches to skip before the page starts; with limit this reaches matches beyond the first page
querystringyesdomain, company or brand to look up, e.g. 'example.com' or 'Acme'
since_daysintegeroptional look-back window in days; the default covers all history

No output schema declared.

No examples provided.

feed_sources ~108

List the public disclosure feeds this server aggregates, how many disclosures are cached per source, each source's newest item and an honest staleness flag, plus cache ages. Takes no arguments. Also states the scope plainly: public feeds only — no .onion access, no arbitrary fetching or crawling, no credential or PII output. Check this first if another tool's answer looks thin: a stale live feed is a finding, not background noise.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

Common questions

What is the data-breach-detector MCP server?

data-breach-detector is an MCP server listed in the public MCP registry as io.github.beepboop2025/data-breach-detector. Read-only breach intel, full history 2007-today: reports THAT an org was breached, never the data. This page covers its hosted endpoint (https://breach.seiche.info/mcp).

Is the data-breach-detector MCP server safe to use?

data-breach-detector scores 80 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

What tools does the data-breach-detector MCP server expose?

data-breach-detector exposes 7 tools: breach_news, check_exposure, breach_history, breach_timeline, breach_stats, and 2 more. Their descriptions and schemas cost roughly 1,594 tokens of context every time the server is loaded.

Does the data-breach-detector MCP server require authentication?

No. We connected to data-breach-detector without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

Is the data-breach-detector MCP server still maintained?

data-breach-detector is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.