osint-investigation

osint-investigation is a skill for Claude Code from HezaoHezao/poirot. It costs 19 tokens per session (1,443 once invoked), scanned D, original, MIT.

A method for researching public records and connecting information about companies, people, property, sanctions, lawsuits, contracts, and news. OSINT means using publicly available information for investigation.

In plain words
What is it for?
Use it for company checks, sanctions screening, ownership research, litigation history, contract and lobbying research, and cross-checking entities with different names.
Why use it?
It helps organize scattered records and distinguish confirmed links from uncertain ones. The result is an evidence chain showing how sources support a conclusion.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: built for hermes-agent.

Good fit Use it for company checks, sanctions screening, ownership research, litigation history, contract and lobbying research, and cross-checking entities with different names.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hezaohezao/poirot/osint-investigation
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add HezaoHezao/poirot --skill osint-investigation
Clone the repo
git clone --depth 1 https://github.com/HezaoHezao/poirot

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for osint-investigation

README.md
[![agentmods](https://agentmods.dev/badge/skills/hezaohezao/poirot/osint-investigation/github.svg)](https://agentmods.dev/skills/hezaohezao/poirot/osint-investigation)
Your own site
<a href="https://agentmods.dev/skills/hezaohezao/poirot/osint-investigation"><img src="https://agentmods.dev/badge/skills/hezaohezao/poirot/osint-investigation/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for osint-investigation

Your own site · 80×15
<a href="https://agentmods.dev/skills/hezaohezao/poirot/osint-investigation"><img src="https://agentmods.dev/badge/skills/hezaohezao/poirot/osint-investigation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,443 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 3 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00019 $0.01443
Opus 5 $0.00010 $0.00722
Sonnet 5 $0.00004 $0.00289
Haiku 4.5 $0.00002 $0.00144

Measured 13d ago against content hash 8caa6aaa6ef7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade D, and why

osint-investigation scanned grade D with 3 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 13d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

curl -s -X POST "https://api.usaspending.gov/api/v2/search/spending_by_award/" -d '{"filters":{...}}'

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -s "https://efts.sec.gov/LATEST/search-index?q=%22Company+Name%22" | python3 -c "..."

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

| **SEC EDGAR** | US public company filings (10-K, 10-Q, 8-K, 13F) | `curl` to `https://efts.sec.gov/LATEST/search-index?q=...` |
poirot/backend/agents/skill/builtin_skills/research/osint-investigation/SKILL.md · 166 lines

How it starts

The opening of the file, as written. The whole thing — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OSINT Investigation — Public Records Cross-Reference

Investigative framework for public-records OSINT: government contracts, corporate filings, lobbying, sanctions, offshore leaks, property records, court records, web archives, knowledge bases, and global news. Resolve entities across heterogeneous sources, build cross-links with explicit confidence, and produce structured evidence chains.

Python stdlib only. Zero install. Most sources work with no API key.

When to Use

Use when the user asks for:

  • "follow the money" — government contracts, lobbying → legislation, sanctions
  • Corporate due diligence — who controls company X, where incorporated, board members, filings
  • Sanctions screening — is entity X on OFAC SDN, ICIJ offshore leaks
  • Property ownership — find recorded deeds/mortgages by name or address
  • Litigation history — find federal + state court opinions
  • Multi-source entity resolution where naming varies (LLC suffixes, abbreviations)
  • Evidence-chain construction with explicit confidence levels
  • "what's been said about X" — international news + Wikipedia + Wayback Machine

Core Sources

Corporate & Financial

Source What Access
SEC EDGAR US public company filings (10-K, 10-Q, 8-K, 13F) curl to https://efts.sec.gov/LATEST/search-index?q=...
USAspending.gov Federal contracts and grants curl to https://api.usaspending.gov/api/v2/...
Senate Lobbying Lobbying Disclosure Act filings curl to https://lda.senate.gov/api/v1/...
OFAC SDN Sanctions list curl to https://www.treasury.gov/ofac/...
ICIJ Offshore Leaks Panama Papers, Paradise Papers, etc. browse_page to https://offshoreleaks.icij.org/...
OpenCorporates Corporate registry (optional free token) curl to https://api.opencorporates.com/...

Property & Courts

Source What Access
NYC ACRIS NYC property records (deeds, mortgages) browse_page to https://a836-acris.nyc.gov/...
CourtListener Federal + state court opinions curl to https://www.courtlistener.com/api/...

Read the full file on GitHub · 166 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 13d ago First seen · 166 lines · 19 tokens per session scan D 8caa6aaa6ef7

Subscribe to this mod's changes

osint-investigation is a skill published in the GitHub repository HezaoHezao/poirot (217 stars, last pushed 1mo ago), licensed MIT. It adds 19 tokens to every session and 1,443 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it D with 3 findings (sends data to an external url, downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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