Borrowing it
Nothing to install: this file belongs to adrianhajdin/skild. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/adrianhajdin/skild/main/.agents/skills/firebase-firestore-standard/SKILL.mdgit clone --depth 1 https://github.com/adrianhajdin/skildWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/adrianhajdin/skild/firebase-firestore-standard)<a href="https://agentmods.dev/skills/adrianhajdin/skild/firebase-firestore-standard"><img src="https://agentmods.dev/badge/skills/adrianhajdin/skild/firebase-firestore-standard/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/adrianhajdin/skild/firebase-firestore-standard"><img src="https://agentmods.dev/badge/skills/adrianhajdin/skild/firebase-firestore-standard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What 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 5.1 | $0.00051 | $0.00257 |
| Opus 5.5 | $0.00020 | $0.00103 |
| Sonnet 5.5 | $0.00010 | $0.00051 |
| Haiku 4.5 | $0.00005 | $0.00026 |
Grade A, and why
firebase-firestore-standard 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 2mo 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2mo ago First seen · 28 lines · 51 tokens per session scan A 44e3bc4a3e9e
firebase-firestore-standard is a skill published in the GitHub repository adrianhajdin/skild (43 stars, last pushed 6mo ago), with no licence file. It adds 51 tokens to every session and 257 once invoked, about $0.0002 per session on Opus 5.5. 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.
firebase-firestore-standard compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| firebase-firestore-standardadrianhajdin/skild | Skill | 43 | 6mo ago | none | A | 51 | Claude Code, Codex |
| explorersupabase/supabase | Skill | 115k | yesterday | Apache-2.0 | A | 27 | Claude Code |
| firebaseericrisco/rsc-harness | Skill | 503 | 2d ago | MIT | A | 77 | Claude Code, Codex |
| firebasej4flmao/agent-skills | Skill | 38 | 3d ago | MIT | A | 91 | Claude Code, Codex |
| firebase-supabase-attackuphiago/recon-skills | Skill | 1.3k | 2mo ago | MIT | B | 21 | Claude Code, Codex |
| tuturuuu-databasetutur3u/platform | Skill | 54 | yesterday | Apache-2.0 | A | 27 | Codex |
| bm-mdmiantiao-me/bm.md | Skill | 620 | 12d ago | LGPL-3.0 | A | 44 | Claude Code, Codex |