Skills/PyPI/mcp-walmart-ads

mcp-walmart-ads@0.5.1

CAUTION· not started

Publisher claims: "MCP server for Walmart Connect Ads, Sam's Club Sponsored Ads, and Walmart Marketplace APIs" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher pypi · publishing for 723 daysInstalls 894Last detonated 4d ago
What would fix thisWatchDispute verdict

Coverage

Not started: dependency install failed; the server itself was not observed.
Tested
the dependency install step · every file read, file written and host contacted by what ran
Not tested
server startup · the tool list · tool behavior

What this means for the label: Caution here covers what ran. The server's tools were not exercised with a real credential, so nothing about their behavior is asserted; the credential summary below says what to do with that.

Before you give it your token

It will ask for
WM_ACCESS_TOKENWM_BEARER_TOKEN
Where it talks to
no vendor host named in the codeAlso walmartapis.com, samsclub.com, readme.com, githubusercontent.com — not the publisher's domain; check what for before connecting.
What the honeypot saw
no credential files read · no network
What we could not test
server startup · the tool list · tool behavior

Connect it with a scoped credential, under the guard, and read the third-party hosts first. The code names walmartapis.com, samsclub.com, readme.com, githubusercontent.com as well as its own vendor. The guard injects WM_ACCESS_TOKEN, WM_BEARER_TOKEN only into requests to the host you bind (and its subdomains) and refuses the rest.

$vet-skills run --net declared -- uvx mcp-walmart-ads

Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.

Is [email protected] safe to install?

KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios; not started: dependency install failed; the server itself was not observed) on 2026-11-10 and scored it 77/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: Access to sensitive file paths; URL with embedded credentials; Access to sensitive file paths. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 0 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
0.1sprocessdependency install exit 1 ·
0.1sclaimednot started: dependency install failed (exit 1); the server itself was not observed
0.1sprocessscript backend runs setup only
0.1sprocessno install scripts to re-run

Static findings

MEDIUM
File type combined with upload actionsrc/mcp_walmart_ads/specs/walmart/marketplace/feed-management.openapi.json:1 · File type combined with upload action — agent may exfiltrate local data files…PROCESSED","feedDate":1568148230011,"modifiedDtm":1568148252067,"fileName":"item.json","itemDataErrorCount":0,"itemSystemErrorCount":0,"itemTimeoutErrorCount":0,"channelType":"0f3e4dd4-0514-4346-b39d-af0e00ea066d","orgId":"f5e3d40a-1267-46…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actionsrc/mcp_walmart_ads/specs/walmart/marketplace/payment-reports.openapi.json:1 · File type combined with upload action — agent may exfiltrate local data files…tream":{"schema":{"type":"string","description":"The data will be streamed in a .CSV file in your folder.\nThe response to a successful call includes a header as an attachment called Content-Disposition.\nThe Content-Disposition header con…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
HIGH
Access to sensitive file pathssrc/mcp_walmart_ads/config.py:471 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filescredential = _load_credential(item, where=f"{where}.credentials[{index}]", errors=errors)Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
URL with embedded credentialssrc/mcp_walmart_ads/specs/walmart/marketplace/returns-management.openapi.json:1 · URL with embedded credentials — may be phishing or credential leaking…nDate","value":"2019-02-21T01:01:08.000Z"},{"name":"FedexTrackingLink","value":"https://www.fedex.com/apps/fedextrack/?tracknumbers=785611449666"}]}],"status":"COMPLETED","statusTime":"2019-03-02T05:45:45.000Z"}],"returnChannel":{"channelN…Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST07
HIGH
Access to sensitive file pathssrc/mcp_walmart_ads/config.py:465 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system fileserrors.append(f"{where}.credentials: must be a list")Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
Python subprocess execution detectedscripts/bump_version.py:35 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
HIGH
Hidden zero-width characters detectedscripts/build_samsclub_spec.py:124 · Hidden zero-width characters detected — may conceal contentreturn re.sub(r"\s+", " ", text.replace("​", "").replace(" ", " ")).strip()Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07
MEDIUM
File type combined with upload actionsrc/mcp_walmart_ads/specs/walmart/marketplace/walmart-plus.openapi.json:1 · File type combined with upload action — agent may exfiltrate local data files…plate sample </a> and the <a href=\"/file/mp/us/bulk-enroll-requestBody-template.json\">JSON body sample</a> to ensure proper formatting of the updated file before uploading it for processing.</b>","operationId":"walmartPlusEnrollment","pa…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actionsrc/mcp_walmart_ads/specs/walmart/marketplace/inventory-management.openapi.json:1 · File type combined with upload action — agent may exfiltrate local data files…"Accept: application/json\" -F \"file=@./MultiNode_Bulk_Inventory_Update_Request.json\""},{"lang":"shell","label":"Upload single-node JSON (spec 1.4)","source":"curl -X POST \"https://marketplace.walmartapis.com/v3/feeds?feedType=inventory…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
HIGH
Access to sensitive file pathssrc/mcp_walmart_ads/config.py:468 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system fileserrors.append(f"{where}.credentials: must not be empty (omit the key instead)")Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05

Cost to the agent

Instructions loaded
≈1,444 tok
3 files · 67 in bundle
Tool list per prompt
≈0 tok
0 tools · 0 per tool
Handshake
no reply
launch to tools/list, stdio
Undocumented tools
0
description under 20 chars · avg 0

Tokens estimated at four characters each. The tool list is re-read by the agent on every turn, so it is the number to compare between servers that do the same job: ranked across the index.

Known vulnerabilities

No advisories in OSV for mcp-walmart-ads@0.5.1 as of 4d ago. This is the package itself, not its dependencies.

What would make this Verified

3 points to 80 · weights: behavior 45%, static 25%, prompt 15%, publisher 15%
  1. Unclaimed publisher≈ +8 on the totalClaim pypi: a verified publisher gets +50 on publisher trust. It is free and usually instant with GitHub sign-in.
  2. Access to sensitive file paths≈ +4 on the totalStop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
  3. URL with embedded credentials≈ +4 on the totalStop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
  4. Hidden zero-width characters detected≈ +4 on the totalKeep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
  5. File type combined with upload action≈ +2 on the totalRemove the call, or declare the host in frontmatter and explain in the README what is sent and why.
  6. Python subprocess execution detected≈ +2 on the totalBuild commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
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