Borrowing it
Nothing to install: this file belongs to tsvikas/amazing-marvin-mcp. 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/tsvikas/amazing-marvin-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/tsvikas/amazing-marvin-mcpWrote 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/tsvikas/amazing-marvin-mcp/claude-md)<a href="https://agentmods.dev/instructions/tsvikas/amazing-marvin-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/tsvikas/amazing-marvin-mcp/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/tsvikas/amazing-marvin-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/tsvikas/amazing-marvin-mcp/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 | $0.00847 | $0.00847 |
| Opus 5 | $0.00424 | $0.00424 |
| Sonnet 5 | $0.00169 | $0.00169 |
| Haiku 4.5 | $0.00085 | $0.00085 |
Grade A, and why
amazing-marvin-mcp 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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.
amazing-marvin-mcp — working rules
MCP server for Amazing Marvin. Read README.md for what it does; this file is
the design rules that keep additions coherent.
Architecture rules
- Reads come from the mirror, writes go through the REST API. The mirror
(
mirror.py) is a local copy of the CouchDB sync database kept fresh with_changes. Never add a tool that reads via REST endpoints (todayItems,children, …): they have no filtering and a 1440 requests/day budget. Never write directly to CouchDB:/api/doc/updatedoes thefieldUpdatesbookkeeping Marvin's conflict resolution needs. - Every write folds its response into the mirror (
mirror.apply) so the next read is consistent without another request. - No
doc/deletetool. Marvin's trash is client-side; API deletes are unrecoverable.MarvinAPI.delete_docexists for test cleanup only. - No "smart"/opinionated tools ("what should I focus on"). Tools expose
Marvin's model; the user's conventions live in their workflow Markdown
(
workflow.mdor aworkflow/directory; templates insrc/amazing_marvin_mcp/templates/workflow/), injected into the server instructions and exposed asmarvin://workflow[/<section>]. - Use Marvin's UI vocabulary in tool names, parameters, output fields and
descriptions: Do date (
day), Due date (dueDate, hard deadline), End date (endDate, self-imposed), Start date, Planned week/month, Duration estimate, Importance (P1 red = 3, P2 = 2, P3 = 1), Eat the Frog, Backburner, Master List, Inbox (parentId="unassigned"), categories vs projects (type). Don't merge due date and end date; don't call either "deadline" in a field. - Models tolerate Marvin's conventions: unset fields arrive as
null,""or0(timeEstimate: 0= no estimate). Keepextra="allow"so undocumented fields pass through (get_taskshows them underother_fields). - Rate limits are Marvin's ask, not ours to optimise away: ≤1 REST call
per 3 s (
MarvinAPIthrottles), mirror polls ≤1/min.
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.
- 10d ago First seen · 62 lines · 847 tokens per session scan A d2764a119214
amazing-marvin-mcp CLAUDE.md is an instructions file published in the GitHub repository tsvikas/amazing-marvin-mcp (1 stars, last pushed 9d ago), licensed MIT. It adds 847 tokens to every session, about $0.0042 per session on Opus 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 2026-08-31.
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