OpenPlanter is an investigation agent with desktop and terminal interfaces that examines varied public datasets, links records belonging to the same entities, and presents evidence-based relationships. Investigators use it to explore connections among corporate, campaign-finance, lobbying, government-contract, sanctions, and other records; catalogue add-ons configure or extend its agent workflow.
Borrowing it
Nothing to install: this file belongs to ShinMegamiBoson/OpenPlanter. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ShinMegamiBoson/OpenPlanter/main/CLAUDE.mdgit clone --depth 1 https://github.com/ShinMegamiBoson/OpenPlanterWrote 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.
[](https://agentmods.dev/instructions/shinmegamiboson/openplanter/claude-md)<a href="https://agentmods.dev/instructions/shinmegamiboson/openplanter/claude-md"><img src="https://agentmods.dev/badge/instructions/shinmegamiboson/openplanter/claude-md/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.
<a href="https://agentmods.dev/instructions/shinmegamiboson/openplanter/claude-md"><img src="https://agentmods.dev/badge/instructions/shinmegamiboson/openplanter/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00225 | $0.00225 |
| Opus 5.5 | $0.00090 | $0.00090 |
| Sonnet 5.5 | $0.00045 | $0.00045 |
| Haiku 4.5 | $0.00022 | $0.00022 |
Grade A, and why
OpenPlanter CLAUDE.md scanned grade A with 0 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 2mo 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Stop Checklist
Before completing a task, check each item:
- Did you take advantage of ALL applicable skills?
- Did you take advantage of ALL applicable subagents?
- Don't guess about the state of the code or any APIs unless explicitly asked to
- If something doesn't work, your first priority must always be determine WHY it doesn't work unless doing so is impossible
- If you have written or modified code, ensure all components have been deterministically validated to be functioning as intended via breaking up any given process or change into the most granular steps possible and validating the conditions at the entry and exit of each of those steps
- If you have written or modified a user-facing feature, you MUST launch the actual application (
cargo tauri dev) and exercise the feature at runtime before calling it done. Unit tests with mocked IPC/DOM do not catch webview-specific or integration failures. - Do not ask the user to perform an action to validate the correctness of your work, you need to validate it yourself
- If the feature is functionally complete, create a temporary commit now. We'll squash the commits later as needed.
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.
- 2mo ago First seen · 13 lines · 225 tokens per session scan A 46e73f007446
OpenPlanter CLAUDE.md is an instructions file published in the GitHub repository ShinMegamiBoson/OpenPlanter (2,816 stars, last pushed 8mo ago), licensed MIT. It adds 225 tokens to every session, about $0.0009 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
OpenPlanter CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| OpenPlanter CLAUDE.mdShinMegamiBoson/OpenPlanter | Instructions file | 2.8k | 8mo ago | MIT | A | 225 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |