BC facebook-page
Facebook Page manager: post, schedule, reply, get insights & more. Requires: powershell/pwsh. Reads ~/.config/fb-page/credentials.json (FB_PAGE_TOKEN, FB_PAGE_ID). FB_APP_SECRET for one-time setup only — delete afterward. Long-lived token; rotate periodically and immediately if host is compromised. Grant minimal permissions only. No data forwarded to third parties; all calls go to graph.facebook.com only.
As a process C 55/100 · Has gaps — weak spots: result and completion, when it triggers, inputs and preconditions
How to improve
- Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
- 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 · 7
✓ No critical or high findings
Medium and low: 7
-
low Exfiltration
exfil-secret-in-urlSKILL.md:40Credential passed in a URL query string (normal for some APIs — verify the host is the intended service) (the skill's own vendor host; quoted — discussed, not commanded)$r1 = Invoke-RestMethod "https://graph.facebook.com/oauth/access_token?grant_type=…&client_id=…&client_secret=…&fb_exchange_token=…"
vendor-hostquoted -
low Exfiltration
net-credential-useSKILL.md:40Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host)$r1 = Invoke-RestMethod "https://graph.facebook.com/oauth/access_token?grant_type=…&client_id=…&client_secret=…&fb_exchange_token=…"
vendor-host -
low Exfiltration
exfil-secret-in-urlSKILL.md:42Credential passed in a URL query string (normal for some APIs — verify the host is the intended service) (the skill's own vendor host; quoted — discussed, not commanded)$r2 = Invoke-RestMethod "https://graph.facebook.com/v25.0/$pageId?fields=…&access_token=…)"
vendor-hostquoted -
low Exfiltration
exfil-secret-in-urlSKILL.md:97Credential passed in a URL query string (normal for some APIs — verify the host is the intended service) (the skill's own vendor host; quoted — discussed, not commanded)$result = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/ENDPOINT?access_token=…" -ErrorAction Stop
vendor-hostquoted -
low Exfiltration
net-credential-useSKILL.md:97Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host)$result = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/ENDPOINT?access_token=…" -ErrorAction Stop
vendor-host -
low Exfiltration
exfil-secret-in-urlSKILL.md:108Credential passed in a URL query string (normal for some APIs — verify the host is the intended service) (the skill's own vendor host; quoted — discussed, not commanded)$result = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/{id}?access_token=…" -Method DELETE -ErrorAction Stopvendor-hostquoted -
low Exfiltration
net-credential-useSKILL.md:108Credential used in a network call (verify the destination is the intended service) (the skill's own vendor host)$result = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/{id}?access_token=…" -Method DELETE -ErrorAction Stopvendor-host
Files scanned: 4. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
- warning
description-no-whendescription does not say WHEN to use the skill (no "use when")
Process rating: all ten parameters 55/100
- 0Result and completion. Does not say what the result is
- 0Inputs and preconditions. Does not say what the process needs to start
- 20When it triggers. No condition that starts the skill
- 30Running it twice. 15 mutating operations with no state check
- 60Tools and files. Uses tools (web) that frontmatter does not declare
- 100Steps. 15 steps
- 100Failures and branches. 3 branches, has a failure section
- 100Consistency. Name and required fields are in place
- 100Execution cost. Instruction body is 2137 tokens
- 100Progress reporting. Reports progress
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)
- +3Output format is not stated: the model decides each time
- +1No license
- +2Single-language instructions
- +3Description length 408: enough signal without eating the budget
- +4Structure: 8 headings
- +3Step-by-step instructions: 15 items
- +4Has examples (9 code blocks)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 72.