crabot (smilefufu/crabot) is an MCP server listed on the M8ven Trust Index. It scores 48 out of 100, grade D. It declares 19 tools. No publisher has claimed this listing.

D
Caution
48/100

crabot

Crabot - 你的硅基伙伴

Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

⚡ Live Monitored: not connected

Verified is a snapshot. Live keeps it current, and builds your track record.

⚡ Connect GitHub → continuous verification on every pushwhy connect →

Who stands behind it

smilefufu

Source: github_code

Is this your MCP?

Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find. Or connect your repo for our deepest verification, Live Monitored: read-only, revoke anytime. What we access →

Install from

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
⚠️
Tool descriptions don’t match what handlers do
1 tool describes read intent but its handler mutates — get_diagnostics (line 215: execFile('npx', ['tsc', ...tscArgs], { cwd, timeout: 20_000 }, (err, stdout, stderr) => {)
🚨
Known vulnerabilities in dependencies: 1 critical
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
⚠️
Tests do not pass
Either the test suite is broken or the code regressed. Either way the published behaviour can’t be verified by the publisher’s own tests.
// tools this server exposes19 tools

These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.

screenshot

Capture a screenshot of the screen. Returns the image as base64 PNG.

mouse_click

Move the mouse to (x, y) and click. Supports left/right click and double click.

keyboard_type

Type text using the keyboard. Simulates keystrokes for each character.

keyboard_key

Press a keyboard key with optional modifiers (command, shift, control, option).

git_status

Get the current git status including branch name and file changes.

git_diff

Show git diff output. Supports staged changes and filtering by file path.

git_log

Show git log with oneline format.

git_commit

Create a git commit. Optionally stage files first.

git_branch

Manage git branches: list, create, delete, or checkout.

git_stash

Manage git stash: push, pop, or list stashed changes.

get_diagnostics

Get diagnostics (errors/warnings) for a TypeScript file using tsc --noEmit. Returns structured diagnostic information.

get_hover

Get hover information (type info, documentation) for a symbol at a given position.

get_definition

Find the definition of a symbol at a given position.

find_references

Find all references to a symbol at a given position.

document_symbols

List all symbols (functions, classes, variables, etc.) in a file.

workspace_symbols

Search for symbols across the entire workspace by name pattern.

go_to_implementation

Find implementations of an interface or abstract method.

incoming_calls

Find all callers of a function/method at a given position.

outgoing_calls

Find all functions/methods called by the function at a given position.

// known CVEs in dependencies1 critical

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

criticalvitest@1.6.1GHSA-5xrq-8626-4rwp

When Vitest UI server is listening, arbitrary file can be read and executed

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

19/19 tools missing one or more hints — screenshot (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); mouse_click (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); keyboard_type (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +16 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Destructive tools are labelled

1 tool perform destructive updates without destructiveHint — screenshot deletes at line 134 (unlinkSync(tmpPath))

Add destructiveHint:true to any tool whose handler calls .delete(), .upsert(), .update(), unlink, rm, DELETE, DROP, REPLACE INTO, or any operation that overwrites existing data.

Descriptions match behaviour

1 tool describes read intent but its handler mutates — get_diagnostics (line 215: execFile('npx', ['tsc', ...tscArgs], { cwd, timeout: 20_000 }, (err, stdout, stderr) => {)

Rename the tool, rewrite the description, or move the side-effect into a separate clearly-named tool.

README present

No README found

Add a README.md describing the server and its tools.

License file

No license file

Add a LICENSE file (MIT, Apache-2.0, etc.).

Tool test coverage

Only 0/19 tools referenced in tests (0%)

Write tests that reference each tool by name so every tool has at least one test.

Tests pass

npm test failed — tests do not pass

Make sure npm test runs cleanly. Common cause: missing build step or missing env vars.

Dev dependencies

1 critical/high in dev-only deps (does not ship to users)

Upgrade dev dependencies when convenient.

Tool description accuracy

get_diagnostics: description implies read-only but handler writes/deletes/executes

Update tool descriptions to accurately reflect all capabilities — especially write, delete, or execute operations.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 10 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
[![M8ven Verified](https://m8ven.ai/badge/mcp/smilefufu/crabot?variant=verified)](https://m8ven.ai/mcp/smilefufu/crabot)
Shows verification status without the grade. Want the grade badge instead? Remove ?variant=verified from the URL.
commit: 7d33bbee7ef9a91c3e7dd29165b6b18f239c1879
code hash: 431df3a6a817c3b97ae7607b25b995705e660b396e42e204890307afbde0b76a
view raw JSON →
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