undo (tathagat22/walkback) is an MCP server listed on the M8ven Trust Index. It scores 62 out of 100, grade C. It declares 16 tools. No publisher has claimed this listing.

Back to MCP Trust IndexM8ven
C
Caution
62/100

undo

Provides checkpoint and rollback capabilities for AI agents, reversing file system changes and recording network mutations.

→ tathagat22/walkback· listed on glama

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

Code Verified⚡ Live Monitored: not connected

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Who stands behind it

tathagat22

Source: Glama

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Install from

Glamanot scored here

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
⚠️
Known vulnerabilities in dependencies: 3 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
✅
Open source with a license and README
Anyone can audit the code, the license is declared, and the publisher documents what it does.
🔐
You'll be asked for 3 credentials: EMAIL_ACCESS_TOKEN, GMAIL_ACCESS_TOKEN, OUTLOOK_ACCESS_TOKEN
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// tools this server exposes16 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.

walkback_init

Set up the walkback time machine in a project directory (and gitignore its snapshots). Run once before checkpointing.

walkback_checkpoint

Mark a point in time you can rewind to. Call this BEFORE you start making changes.

walkback_track
walkback_record_http
walkback_status

Show every effect recorded since the most recent checkpoint.

walkback_log

List every checkpoint and effect in order.

walkback_rollback
walkback_redo
walkback_diff
walkback_revert
walkback_record_reversal
walkback_compensate
walkback_email_stage
walkback_email_release

Actually send the held draft(s). After this the email is delivered and CANNOT be recalled.

walkback_email_cancel
walkback_email_pending

Show emails staged but not yet released — these can still be cancelled.

// known CVEs in dependencies3 high

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

high@modelcontextprotocol/sdk@1.12.0GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.12.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.12.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
🔐 secretEMAIL_ACCESS_TOKEN
configEMAIL_PROVIDER
🔐 secretGMAIL_ACCESS_TOKEN
configGMAIL_API_BASE
🔐 secretOUTLOOK_ACCESS_TOKEN
configOUTLOOK_API_BASE
// 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

16/16 tools missing one or more hints — walkback_init (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); walkback_checkpoint (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); walkback_track (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +13 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.

Tests exist

No test files found

Add tests that exercise each declared tool.

Shell command execution

1 child_process call — runs shell commands

Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.

Production dependencies are patched

0 critical, 3 high severity in production deps — @modelcontextprotocol/sdk@1.12.0 (high), @modelcontextprotocol/sdk@1.12.0 (high)

Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.

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 5 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/tathagat22/walkback?variant=verified)](https://m8ven.ai/mcp/tathagat22/walkback)
Shows verification status without the grade. Want the grade badge instead? Remove ?variant=verified from the URL.
commit: b980574e2cb12481b88946b0fbc02002bc633cf8
code hash: cba262ac77b3927b9afcad41ca6af0fe31c5803602c86f8f616d6d36de3d54d9
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