Pack local or remote codebases into AI-friendly files that LLMs and coding agents can read or search
Nothing to run from here
Walkback is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
92/100
trust score
31
downloads in 30d
local
runs on your machine
16
tools declared
What it does
Undo anything your AI agent does. A universal time machine that records every side effect an autonomous agent produces — file writes, shell commands, git state, HTTP mutations — and reverses them with one command.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user walkback-mcp '--' npx -y @tathagatmaitray/walkback
# 2 — ask your agent for something these tools do
# undo_init, undo_checkpoint, undo_track and 13 more
Walkback costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Publishernot claimed
TAAll 1 server
@tathagatmaitray1 server
1 category
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Installation
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. This one runs on your machine: your client starts Walkback as a process under your own user, with your files and your network, so the tool surface below is what it can do to your computer rather than to a server somewhere else. Its scan result is on the Security tab — read the surface before you approve it.
Claude Codedeclared by this listing
This is a public server: you run it yourself and this marketplace is not in the path. You need Node.js — the current LTS (24) is the safe choice; npx comes with it. Claude Code registers it in one command; --scope user makes it available in every project. The '--' is in quotes so that PowerShell passes it on.
claude mcp add --scope user walkback-mcp '--' npx -y @tathagatmaitray/walkbackReconnect, or start a new session, and the tools appear in the model’s tool list.
Free on mcprush, and it runs from its publisher’s own package: this marketplace is not in the path, so there is no key of ours to hold and no card to add.
What it writes
One config entry your client uses to start the process locally. A local server runs with your file system and your network, which is why it is priced without metering.
What you approve
16 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
Set up the undo time machine in a project directory (and gitignore its snapshots). Run once before checkpointing.
No parameter schema on file.
Mark a point in time you can rewind to. Call this BEFORE you start making changes.
No parameter schema on file.
Capture a file
No parameter schema on file.
Log a POST/PUT/PATCH/DELETE the agent made, with an optional compensating request
No parameter schema on file.
Show every effect recorded since the most recent checkpoint.
No parameter schema on file.
List every checkpoint and effect in order.
No parameter schema on file.
Reverse every change made since a checkpoint (the latest one by default).
No parameter schema on file.
Re-apply the changes that the most recent undo_rollback reversed, and re-extend the
No parameter schema on file.
A PR-style diff of every file changed since the last checkpoint — the reviewable
No parameter schema on file.
Reverse just a single file (the most recent change to it), leaving every other change since
No parameter schema on file.
Record the command that reverses something the agent did to an external system — a cloud
No parameter schema on file.
Execute the compensating actions recorded since the last checkpoint: the reversing HTTP
No parameter schema on file.
Hold an email instead of sending it immediately: it becomes a Gmail DRAFT that has gone
No parameter schema on file.
Actually send the held draft(s). After this the email is delivered and CANNOT be recalled.
No parameter schema on file.
Delete the held draft(s) so they never go out — a true unsend, possible only because they
No parameter schema on file.
Show emails staged but not yet released — these can still be cancelled.
No parameter schema on file.
Free
$0 forever
- Every tool, no call limit
- No card, and mcprush charges nothing for it
- Source published under MIT
- Runs on your machine — nothing of it reaches our gateway
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install Walkback or to call it, at any volume.
Call allowance · this installenforced at the gateway
Monthly allowance, in calls
—
—
Alert at 80% · then the tool returns a normal MCP error
Used this month: —
ATrust score 92 / 100
Release 0.2.2 · scanned 15 Oct 2026
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
Threat score100
Client score92
Findings2 threat · 3 capability
Capabilityhigh
Coveragesource
Verificationnone
Surface digestc73ff2e13160a68888ae025ae957a5966998998b0ba9698338560586c4f6c838
Score vectorthreat 100 → client 92
| Term | Level | What it prices | Points |
|---|---|---|---|
| capability-exposure | high | capability blast radius (high) — client exposure if the model is manipulated | −6 |
| verification-discount | none | publisher verification (unlinked) — no provenance/repo link, but the shipped source was fully read | −2 |
| coverage-honesty | source | inspection depth (source) — how much of the target the scan could see | −0 |
score = clamp(round(threatScore − E_cap − E_ver − E_cov), 0, 100). No model, no opinion, no network call at scoring time: the same methodology version against the same bytes always produces this number, and every line above is a field of the report rather than a summary of it.
What the scan could actually read
A grade is only as meaningful as its coverage, so the scanner publishes its own depth before it publishes its result.
Tool surfaceread
Implementation sourceread
Package metadataread
Live transportnot available
Tools were statically extracted from the published source (16 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, scan the running server: --command "npx -y <package>".
Capability — what it could do if the model were manipulated
Tags derived from each tool’s schema and the implementation, not from what the tool calls itself. high is the level these add up to.
| Tool | Capability tags | Why the tag was assigned |
|---|---|---|
| undo_init | no tags | |
| undo_checkpoint | no tags | |
| undo_track | no tags | |
| undo_record_http | no tags | |
| undo_status | no tags | |
| undo_log | no tags | |
| undo_rollback | no tags | |
| undo_redo | no tags | |
| undo_diff | no tags | |
| undo_revert | no tags | |
| undo_record_reversal | code-exec | code-exec: parameter "command" |
| undo_compensate | external-sink | external-sink: keyword "http_request" |
| undo_email_stage | no tags | |
| undo_email_release | no tags | |
| undo_email_cancel | no tags | |
| undo_email_pending | no tags |
Toxic-flow graph
The lethal trifecta, checked as a graph rather than as a checklist: untrusted input, a sensitive source and an external sink have to meet before there is a path worth worrying about.
The public result for this release does not print the flow graph, so there is nothing to show here. That is not the same as "no paths were found": what the scan did read is above, under coverage.
Supply chain and provenance
Integrityfirst-seen
Surface digestc73ff2e13160a688
Scanned2026-10-15
This is the first scan of this surface here, so there is nothing yet to compare it against.
Every result on this tab comes from one deterministic pass over the published package — offline, rule by rule, and auditable line by line above. Same methodology version, same bytes, same score.
Release history
Always latest — the install command names no version, so it installs the newest release when it runs; the current release on file is 0.2.2. Pin a release below and the command asks for exactly that one.
0.2.2
undated
latestNo release note was published with this version.
—
no reviews yet
Who can review
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Sign in to write one
Any signed-in account that does not publish Walkback can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
No reviews yet
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.