FD follow-builders
AI builders digest — 监控顶级 AI builders 在 X 和 YouTube 播客上的动态,将其内容重新整理为易于消化的摘要。当用户想要 AI 行业洞察、builder 更新或调用 /ai 时使用。Twitter 使用免费 Rettiwt-API(无需付费 key),YouTube 使用 yt-dlp(免费)。
As a process D 41/100 · Unfinished process — weak spots: result and completion, when it triggers, inputs and preconditions
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.
- 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 · 18
-
high Exfiltration
intent-browser-credential-storeREADME.md:27Accesses a browser credential / cookie store- 如遇到 "Sign in to confirm" 错误,需配置 cookies:在 `.env` 添加 `YT_DLP_COOKIES=chrome`
-
high Exfiltration
intent-browser-credential-storeREADME.md:177Accesses a browser credential / cookie storeYT_DLP_COOKIES=chrome
-
high Exfiltration
intent-browser-credential-storeSKILL.md:66Accesses a browser credential / cookie storeYT_DLP_COOKIES=chrome
Medium and low: 15
-
medium Exfiltration
intent-browser-credential-storedigest-data.json:256Accesses a browser credential / cookie store (quoted — discussed, not commanded)"YouTube: yt-dlp 被要求验证身份。请配置 cookies:\n 在 data/.env 中添加 YT_DLP_COOKIES=chrome(或 firefox/edge)\n 或指定 cookies 文件路径:YT_DLP_COOKIES=/path/to/cookies.txt",
quoted -
medium Exfiltration
intent-browser-credential-storedigest-data.json:257Accesses a browser credential / cookie store (quoted — discussed, not commanded)"YouTube: yt-dlp 被要求验证身份。请配置 cookies:\n 在 data/.env 中添加 YT_DLP_COOKIES=chrome(或 firefox/edge)\n 或指定 cookies 文件路径:YT_DLP_COOKIES=/path/to/cookies.txt",
quoted -
medium Exfiltration
intent-browser-credential-storedigest-data.json:258Accesses a browser credential / cookie store (quoted — discussed, not commanded)"YouTube: yt-dlp 被要求验证身份。请配置 cookies:\n 在 data/.env 中添加 YT_DLP_COOKIES=chrome(或 firefox/edge)\n 或指定 cookies 文件路径:YT_DLP_COOKIES=/path/to/cookies.txt",
quoted -
medium Exfiltration
intent-browser-credential-storedigest-data.json:259Accesses a browser credential / cookie store (quoted — discussed, not commanded)"YouTube: yt-dlp 被要求验证身份。请配置 cookies:\n 在 data/.env 中添加 YT_DLP_COOKIES=chrome(或 firefox/edge)\n 或指定 cookies 文件路径:YT_DLP_COOKIES=/path/to/cookies.txt",
quoted -
medium Exfiltration
intent-browser-credential-storedigest-data.json:260Accesses a browser credential / cookie store (quoted — discussed, not commanded)"YouTube: yt-dlp 被要求验证身份。请配置 cookies:\n 在 data/.env 中添加 YT_DLP_COOKIES=chrome(或 firefox/edge)\n 或指定 cookies 文件路径:YT_DLP_COOKIES=/path/to/cookies.txt"
quoted -
medium Exfiltration
intent-browser-credential-storescripts/yt-dlp-helpers.js:118Accesses a browser credential / cookie store (quoted — discussed, not commanded)` 在 data/.env 中添加 YT_DLP_COOKIES=chrome(或 firefox/edge)\n` +
quoted -
low Secrets in code
secret-high-entropy-tokenconfig/config.json:18High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)"playlistId": "PLOh…Dx8"
quoted -
low Instruction override
en-ignore-previousdigest-data.json:222Instruction-override phrase ("ignore previous instructions") (detector / deny-list definition; security demo / example)"content": "By default, Claude Code asks users for approval before running commands or modifying files. This keeps users safe, but it also means a lot of clicking \"approve.\" Over time that leads to
detectordemo -
low Dangerous commands
cmd-pipe-to-shelldigest-data.json:222Downloads and executes remote code from an unrecognised host (pipe to shell) (security demo / example; quoted — discussed, not commanded)"content": "By default, Claude Code asks users for approval before running commands or modifying files. This keeps users safe, but it also means a lot of clicking \"approve.\" Over time that leads to
demoquoted -
low Exfiltration
intent-browser-credential-storescripts/cli.js:129Accesses a browser credential / cookie store (code comment; quoted — discussed, not commanded)# YT_DLP_COOKIES=chrome
commentquoted -
low Secrets in code
secret-high-entropy-tokenscripts/package-lock.json:52High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)"integrity": "sha5…9dM/mwVgvbZJaSNaRk+bshk…Kbz+IoId…W0Q==",
quoted -
low Secrets in code
secret-high-entropy-tokenscripts/package-lock.json:98High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)"integrity": "sha5…qaV+u/EiwE…6sU/fwsn…LwQ==",
quoted -
low Secrets in code
secret-high-entropy-tokenscripts/package-lock.json:127High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)"integrity": "sha5…SDq+2kAA…MOe/+5cdoEdg==",
quoted -
low Secrets in code
secret-high-entropy-tokenscripts/package-lock.json:154High-entropy token-like string (may be an id, hash or a credential) (detector / deny-list definition)"integrity": "sha5…GLw+xYSd…cqA==",
detector -
low Secrets in code
secret-high-entropy-tokenscripts/package-lock.json:206High-entropy token-like string (may be an id, hash or a credential) (quoted — discussed, not commanded)"integrity": "sha5…FrF+LTRo…W3g==",
quoted
Files scanned: 16. 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 41/100
- 0Result and completion. Does not say what the result is
- 0Inputs and preconditions. Does not say what the process needs to start
- 0Failures and branches. Linear process with no failure handling
- 0Progress reporting. Says nothing while it works
- 20When it triggers. No condition that starts the skill
- 40Consistency. Frontmatter name (follow-builders) differs from the folder (follow-aibuilders)
- 60Tools and files. Uses tools (web, python) that frontmatter does not declare
- 100Steps. 72 steps
- 100Execution cost. Instruction body is 2247 tokens
- 100Running it twice. No mutating operations
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
- -31 of 3 scripts are never mentioned in SKILL.md
- +1No license
- +2Single-language instructions
- +3Description length 169: enough signal without eating the budget
- +4Structure: 30 headings
- +3Step-by-step instructions: 72 items
- +4Has examples (33 code blocks)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 69.