msgvault is an offline archive for email, chats, meetings, and related message history, with local search and analytics over the collected data. It is used to preserve and query communication records from services such as Gmail, Google Calendar, Slack, Discord, Microsoft Teams, and IMAP without relying on ongoing mailbox access.
Borrowing it
Nothing to install: this file belongs to kenn-io/msgvault. 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/kenn-io/msgvault/main/AGENTS.mdgit clone --depth 1 https://github.com/kenn-io/msgvaultWrote 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/kenn-io/msgvault/agents-md)<a href="https://agentmods.dev/instructions/kenn-io/msgvault/agents-md"><img src="https://agentmods.dev/badge/instructions/kenn-io/msgvault/agents-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/kenn-io/msgvault/agents-md"><img src="https://agentmods.dev/badge/instructions/kenn-io/msgvault/agents-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 | $0.01775 | $0.01775 |
| Opus 5.5 | $0.00710 | $0.00710 |
| Sonnet 5.5 | $0.00355 | $0.00355 |
| Haiku 4.5 | $0.00178 | $0.00178 |
Grade A, and why
msgvault AGENTS.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 today.
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.
How it starts
The opening of the file, as written. The whole thing — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent guide
These instructions apply to all coding agents in this repository. Read
CONSTITUTION.md first. CLAUDE.md imports this file;
keep shared project guidance here.
Find the right reference
msgvault archives communications and relationships on the user's own hardware. The daemon owns archive access; the CLI, Web UI, TUI, HTTP API, and MCP server provide different ways to use the same archive.
- Architecture: responsibilities and data flow.
- Development: build prerequisites, test scheduling, PostgreSQL test setup, and documentation checks.
- CLI reference and configuration: commands, flags, defaults, and runtime paths.
- Documentation contributor guide: page ownership and maintenance.
- Historical designs: implementation rationale, not a substitute for current source or architecture.
Workflow
- Complete all requested steps. If you changed files, commit the work before ending the turn; do not ask for permission to commit. Preserve unrelated work.
- Before committing, inspect
git diffandgit status. Include all changes from the task, including formatting and generated output. - Pull requests must have a user-facing benefit or improve the developer experience, and the body must say which one.
- Write issues and pull requests in English.
- Keep PR descriptions focused on the problem, resulting behavior, and review
boundaries. Do not add
Validation,Test plan, or equivalent command-run sections; CI carries routine check results. - Never run
roborev reviewin any form, or invoke a roborev skill, unless the user explicitly asks for it. Other roborev CLI commands may be used when appropriate. - Never name private downstream projects or codebases in public artifacts. Describe reusable requirements generically and run the private-data scrub before publishing.
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.
- today Changed · +1 lines · +9 tokens per session a54714b04b13
- 3d ago Changed · +10 lines · +167 tokens per session 050a1c920d8f
- 12d ago Changed · +1 lines · +26 tokens per session 95df08c106ae
- 14d ago Changed · +5 lines · +68 tokens per session 53fc167e7837
- 17d ago Changed · +2 lines · +25 tokens per session da8be3e27790
- 1mo ago Changed · +57 lines · +773 tokens per session 282db44378d8
- 1mo ago Changed · +6 lines · +51 tokens per session b8ceafd1fde3
- 1mo ago First seen · 61 lines · 656 tokens per session scan A b13497fda721
msgvault AGENTS.md is an instructions file published in the GitHub repository kenn-io/msgvault (2,163 stars, last pushed today), licensed MIT. It adds 1,775 tokens to every session, about $0.0071 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.
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