Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/firebase/firebase-tools/resolve-docker-vulnerabilitiesnpx skills add firebase/firebase-tools --skill resolve-docker-vulnerabilitiesgit clone --depth 1 https://github.com/firebase/firebase-toolsWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00038 | $0.00551 |
| Opus 5 | $0.00019 | $0.00275 |
| Sonnet 5 | $0.00008 | $0.00110 |
| Haiku 4.5 | $0.00004 | $0.00055 |
Grade A, and why
resolve-docker-vulnerabilities scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Resolve Docker Vulnerabilities
This skill guides you through the process of listing images, checking for vulnerabilities, planning remediation, and verifying the fixes by publishing to a staging repository.
Workflow
1. Publish to Staging
Run the build on fir-tools-builds and publish to the staging repository in firebase-cli to see the baseline vulnerabilities after the build's own updates.
./scripts/publish/firebase-docker-image/run.sh --build-project fir-tools-builds --repo staging --target firebase-cli
2. Check Vulnerabilities
Check the vulnerability reports for the image just pushed to staging. You will need to find the digest of the image first.
gcloud artifacts docker images list us-docker.pkg.dev/firebase-cli/staging/firebase
Then check vulnerabilities using the digest:
gcloud artifacts vulnerabilities list us-docker.pkg.dev/firebase-cli/staging/firebase@sha256:<DIGEST>
To investigate which layers and file paths are causing the vulnerabilities, run the command with --format=json:
gcloud artifacts vulnerabilities list us-docker.pkg.dev/firebase-cli/staging/firebase@sha256:<DIGEST> --format=json
Look for fileLocation and layerDetails in the output to understand if the vulnerability is in:
- Project dependencies (e.g., under
/usr/local/node_packages/node_modules). Recommend updating the package.json and running the build again. You can use overrides as needed here to upgrade transitive dependencies to non-breaking versions. - Global tools (e.g., under
/usr/local/lib/node_modules/npm). Recommend waiting for upstream fixes (which will be pulled in as soon as they are available). - External binaries (e.g., emulator JARs under
/root/.cache/firebase/emulators). Recommend raising these issues to the team owning the emulator.
3. Plan Remediation
For each vulnerable package identified:
- Determine if it can be updated in the Dockerfile.
- Check if a fix is available.
- Create a plan to address it (e.g., upgrading the base image, upgrading the specific package).
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 59 lines · 38 tokens per session scan A 109bca4a1dfd
resolve-docker-vulnerabilities is a skill published in the GitHub repository firebase/firebase-tools (4,462 stars, last pushed today), licensed MIT. It adds 38 tokens to every session and 551 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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