FB rent-a-person-ai
(no description)
As a process B 79/100 · Nearly there — weak spots: when it triggers, execution cost
What is at stake
The skill contains fragments that, in the wrong hands, cost money or data. Below: what the installer risks and what the author should do.
The instructions or scripts send data out: environment variables, keys, file contents, chat history. You may never notice, because the agent performs the upload as "part of the task".
If the upload is not needed for the task, remove it: catalogs flag such skills and delist them. If it is needed, name the destination explicitly, say what leaves the machine, and give the user a switch.
How to improve
- Address the high-severity findings: each costs 18 safety points. If one is a false positive, add the rule id to guard.allow in spec.yaml.
- Add a description to the frontmatter: without it the skill never triggers.
- The SKILL.md body is over 5,000 tokens: move reference detail into references/ and load it when needed.
- Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
- A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.
Guard findings · 24
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high Exfiltration
exfil-webhook-urlbridge/README.md:54Webhook / callback URL commonly used for exfiltration (verify the destination)# https://abc1….io
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high Exfiltration
exfil-webhook-urlscripts/verify-setup.md:39Webhook / callback URL commonly used for exfiltration (verify the destination)curl -X POST https://velia-regardable-reed.ngrok-free.dev \
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high Exfiltration
exfil-webhook-urlscripts/verify-setup.md:52Webhook / callback URL commonly used for exfiltration (verify the destination)node test-webhook.js https://velia-regardable-reed.ngrok-free.dev
Medium and low: 21
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medium Exfiltration
net-redirectable-api-keybridge/server.js:35Helper sends the API key to a host configured by an environment variable — the key can be redirected to another serverAPI key + configurable base URL from environment
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medium Exfiltration
exfil-webhook-urlINSTALLATION.md:152Webhook / callback URL commonly used for exfiltration (verify the destination) (quoted — discussed, not commanded)"webhookUrl": "https://abc1….io"
quoted -
medium Exfiltration
exfil-webhook-urlINSTALLATION.md:180Webhook / callback URL commonly used for exfiltration (verify the destination) (quoted — discussed, not commanded)"webhookUrl": "https://abc1….io/hooks/rentaperson"
quoted -
medium Exfiltration
exfil-webhook-urlrentaperson-agent.json:6Webhook / callback URL commonly used for exfiltration (verify the destination) (quoted — discussed, not commanded)"webhookUrl": "https://velia-regardable-reed.ngrok-free.dev",
quoted -
medium Exfiltration
net-redirectable-api-keyscripts/fetch-test-ids.js:31Helper sends the API key to a host configured by an environment variable — the key can be redirected to another serverAPI key + configurable base URL from environment
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medium Exfiltration
net-credential-usescripts/inject-api-key.js:37Credential used in a network call (verify the destination is the intended service)const curlArgs = ['-H', `X-API-Key: ${key}`, ...args]; -
medium Exfiltration
exfil-webhook-urlscripts/verify-setup.md:14Webhook / callback URL commonly used for exfiltration (verify the destination) (quoted — discussed, not commanded)- **Forwarding**: `https://velia-regardable-reed.ngrok-free.dev -> http://localhost:XXXX`
quoted -
low Dangerous commands
cmd-background-processbridge/README.md:104Starts a background / autostarted processsudo systemctl enable rentaperson-bridge
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low Exfiltration
exfil-webhook-urlINSTALLATION.md:142Webhook / callback URL commonly used for exfiltration (verify the destination) (security demo / example; quoted — discussed, not commanded)Copy the HTTPS URL (e.g., `https://abc1….io`)
demoquoted -
low Dangerous commands
cmd-background-processINSTALLATION.md:286Starts a background / autostarted processsudo systemctl enable rentaperson-bridge
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low Exfiltration
net-credential-usescripts/inject-api-key.js:12Credential used in a network call (verify the destination is the intended service) (code comment)* → Runs curl with -H "X-API-Key: $RENTAPERSON_API_KEY" prepended.
comment -
low Exfiltration
exfil-webhook-urlscripts/setup.js:448Webhook / callback URL commonly used for exfiltration (verify the destination) (security demo / example; quoted — discussed, not commanded)'Gateway base URL (e.g. https://abc1….io)',
demoquoted -
low Exfiltration
exfil-webhook-urlscripts/setup.js:465Webhook / callback URL commonly used for exfiltration (verify the destination) (security demo / example; quoted — discussed, not commanded)const ngrokUrl = await ask(rl, 'Public webhook URL (e.g. https://abc1….io)', '');
demoquoted -
low Exfiltration
net-credential-usescripts/setup.js:845Credential used in a network call (verify the destination is the intended service) (quoted — discussed, not commanded)Example: \`curl -H "X-API-Key: ${apiKey}" "${apiBase}/api/conversations"\`quoted -
low Exfiltration
exfil-webhook-urlscripts/test-webhook.js:5Webhook / callback URL commonly used for exfiltration (verify the destination) (code comment; test fixture / example file)* Example: node test-webhook.js https://abc1….io
commentfixture -
low Exfiltration
exfil-webhook-urlscripts/test-webhook.js:12Webhook / callback URL commonly used for exfiltration (verify the destination) (test fixture / example file; quoted — discussed, not commanded)console.error('Example: node test-webhook.js https://abc1….io');fixturequoted -
low Exfiltration
exfil-webhook-urlscripts/test-webhook.js:83Webhook / callback URL commonly used for exfiltration (verify the destination) (test fixture / example file; quoted — discussed, not commanded)console.error(' https://velia-regardable-reed.ngrok-free.dev');fixturequoted -
low Exfiltration
exfil-webhook-urlscripts/verify-setup.md:65Webhook / callback URL commonly used for exfiltration (verify the destination) (placeholder value)- Visit `https://velia-regardable-reed.ngrok-free.dev` in your browser first
placeholder -
low Exfiltration
exfil-webhook-urlSKILL.md:45Webhook / callback URL commonly used for exfiltration (verify the destination) (security demo / example; quoted — discussed, not commanded)- **Webhook URL** (e.g. your ngrok HTTPS URL, e.g. `https://abc1….io`)
demoquoted -
low Exfiltration
exfil-webhook-urlSKILL.md:122Webhook / callback URL commonly used for exfiltration (verify the destination) (security demo / example; quoted — discussed, not commanded)Copy the **HTTPS** URL (e.g. `https://abc1….io`), then register:
demoquoted -
low Exfiltration
exfil-webhook-urlWEBHOOK_API_KEY_SOLUTION.md:341Webhook / callback URL commonly used for exfiltration (verify the destination) (placeholder value)4. Point RentAPerson webhook at: `https://your-ngrok.ngrok.io` (bridge port)
placeholder
Files scanned: 21. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
- error
frontmatterSKILL.md: no YAML frontmatter block found - error
name-missingSKILL.md: frontmatter has no `name` - error
description-missingSKILL.md: no `description` — the skill can never trigger - warning
body-longSKILL.md body ≈ 13885 tokens (recommended < 5000); move details to references/
Process rating: all ten parameters 79/100
- 30When it triggers. No condition that starts the skill
- 40Execution cost. Instruction body is 13885 tokens: crowds the task out of the window
- 60Tools and files. Uses tools (bash, web, node) that frontmatter does not declare
- 85Steps. 127 steps, 3 vague phrases
- 100Result and completion. Output format and completion criterion are stated
- 100Inputs and preconditions. Inputs and preconditions are listed
- 100Failures and branches. 25 branches, has a failure section
- 100Consistency. Name and required fields are in place
- 100Running it twice. Mutating operations check current state
- 100Progress reporting. Reports progress
- medium Safety rules and hard prohibitions inside a skill: they belong in the system prompt, here they protect nothing
- low 12 top-level sections: this looks like several domains in one skill
Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.
Quality signals
- +5Description has no quoted example phrases that should trigger the skill
- +4Description does not say when NOT to use the skill (false activations)
- +3Description length 0: 120–800 characters recommended
- -2localhost URLs: will not work for another user
- -36 of 10 scripts are never mentioned in SKILL.md
- +1No license
- +2Single-language instructions
- +4Structure: 41 headings
- +3Step-by-step instructions: 127 items
- +3Output format is stated explicitly
- +4Has examples (49 code blocks)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 0.