fieldtwin@0.5.3
VERIFIED· install onlyPublisher claims: "Local, stateful twins of the Jobber, Housecall Pro, and QuickBooks Online APIs. Its MCP tools let a coding agent reset, rewind, advance time, inject faults, and load scenarios while it builds and tests integrations, with no real accounts." Observed in sandbox: no network, touches nothing outside the project, writes no memory.
Coverage
Nothing executable in the bundle ran; the trace covers the install step only.- Tested
- every file read, file written and host contacted by what ran
- Not tested
- use of the skill by an agent
What this means for the label: Verified 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
- no credential variables read in the code
- Where it talks to
- no vendor host named in the codeAlso getjobber.com, intuit.com, housecallpro.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
- use of the skill by an agent
Connect it under the guard. Nothing executable in the bundle ran; the trace covers the install step only. The code names no credential variable; the guard pins the network to what the honeypot saw and logs every call.
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 (1 scenario; nothing executable in the bundle ran; the trace covers the install step only) on 2026-11-12 and scored it 89/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed; the static findings and the publisher carry the rest of the score. Summary: no network, touches nothing outside the project, writes no memory.
Behavior trace
Honeypot run · 0 s · 1 scenarios · 0 deviationsStatic findings
return c.json({ error: "invalid_client", error_description: "Send the app's client_id and client_secret as HTTP Basic auth" }, 401);Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.* Load a scenario given as a ready-made one's name (`npx fieldtwin flaky-apis`) or a YAML fileFix: Pin versions and sources; vendor anything fetched at install time.* (`npx fieldtwin my-scenario.yaml`).Fix: Pin versions and sources; vendor anything fetched at install time.* `npx fieldtwin mcp` and `npm run mcp`: start the twin's HTTP server (so your code can call the vendor APIs) andFix: Pin versions and sources; vendor anything fetched at install time.* `npx fieldtwin`: the twin, or the twin plus its MCP server, with an optional scenario. Settings stay in theFix: Pin versions and sources; vendor anything fetched at install time.* `npx fieldtwin`, without printing anything or exiting the process: anything wrong is thrown.Fix: Pin versions and sources; vendor anything fetched at install time.* Start the twin's HTTP server, as `npx fieldtwin` and `npm start` do. Anything wrong with the environment, theFix: Pin versions and sources; vendor anything fetched at install time.Cost to the agent
Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.
Known vulnerabilities
Vulnerability advisories (OSV) cover npm and PyPI packages; this registry has no advisory database.