Recon Skills is a pack of security-testing skills covering reconnaissance, web applications, APIs, authentication, vulnerability validation, cloud infrastructure, and reporting. Security professionals use it for authorized assessments of systems they own or have written permission to test. The catalogue entries are individual skills from the pack.
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 skills add uphiago/recon-skills --skill firebase-supabase-attackgit clone --depth 1 https://github.com/uphiago/recon-skillsWrote 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/uphiago/recon-skills/firebase-supabase-attack)<a href="https://agentmods.dev/skills/uphiago/recon-skills/firebase-supabase-attack"><img src="https://agentmods.dev/badge/skills/uphiago/recon-skills/firebase-supabase-attack/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/uphiago/recon-skills/firebase-supabase-attack"><img src="https://agentmods.dev/badge/skills/uphiago/recon-skills/firebase-supabase-attack.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 8 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Supply Chain · line 167 Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.Fix: Avoid downloading and executing remote scripts. Use trusted packages from PyPI/npm. If remote fetch is required, verify checksums and use HTTPS.
- high Privilege Escalation · line 299 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Supply Chain · line 302 Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.Fix: Avoid downloading and executing remote scripts. Use trusted packages from PyPI/npm. If remote fetch is required, verify checksums and use HTTPS.
- medium Data Exfiltration · line 38 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Excessive Agency · line 60 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Excessive Agency · line 317 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Data Exfiltration · line 156 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 259 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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 | $0.00021 | $0.04164 |
| Opus 5.5 | $0.00008 | $0.01666 |
| Sonnet 5.5 | $0.00004 | $0.00833 |
| Haiku 4.5 | $0.00002 | $0.00416 |
Grade B, and why
firebase-supabase-attack scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Downloads and executes remote codemediumSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl --max-time 30 --connect-timeout 10 -sk -X PATCH "$SUPABASE_URL/rest/v1/profiles?id=eq.$(echo "$SIGNUP_RESP" | python3 -c "import sys,json; print(json.load(sys.stdin)['user']['id'])" 2>/dev/null)" \ Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
compatibility: Requires curl, nmap, python3, masscan, subfinder, httpx, nuclei How it starts
The opening of the file, as written. The whole thing — 330 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Firebase & Supabase Attack Skill
Exploit misconfigured Firebase (Firestore, Storage, Auth) and Supabase (REST API, Storage, Auth) backends. These BaaS platforms are the #1 source of massive data breaches in modern web apps when Row Level Security (RLS) is missing and API keys leak in JavaScript bundles. Confirmed on delivery-platform (204K WhatsApp conversations, 173K phone numbers), visa-processing-platform (64K users, 46K reports), fitness-chain (39K users, 5 Firebase projects, 21 credentials), dental-booking (9 clinics, 1,749 leads).
When to Use
- JavaScript bundle analysis reveals Firebase config (
apiKey,projectId) or Supabase URL + anon key. - Target uses a modern SPA (React, Vue, Angular) with BaaS backend.
- After
js-secrets-extractionfinds Firebase/Supabase identifiers. - After
source-leak-huntfinds.envwithFIREBASE_*orSUPABASE_*variables.
Prerequisites
terminalwith curl, python3, jq.- Firebase project ID or Supabase URL + anon key (from JS bundle, source leak, or recon).
- For Firebase SA key exploitation:
python3withgoogle-authlibrary.
How to Run
# Firebase Firestore — list collections (if public)
curl --max-time 30 --connect-timeout 10 -sk "https://firestore.googleapis.com/v1/projects/PROJECT_ID/databases/(default)/documents/"
# Supabase — list users table (if RLS missing)
curl --max-time 30 --connect-timeout 10 -sk "https://PROJECT.supabase.co/rest/v1/users" \
-H "apikey: ANON_KEY" -H "Authorization: Bearer ANON_KEY"
# Supabase — test signup (if open)
curl --max-time 30 --connect-timeout 10 -sk -X POST "https://PROJECT.supabase.co/auth/v1/signup" \
-H "apikey: ANON_KEY" -H "Content-Type: application/json" \
-d '{"email":"[email protected]","password":"Test123!"}'
Quick Reference
| Platform | What to Find | Exploit Path | Real Example |
|---|---|---|---|
| Firebase Firestore | Public database rules | Direct REST API access, list all collections | delivery-platform: 204K conversations public |
| Firebase Storage | Public bucket rules | Download all files via REST API | delivery-platform: 1,000+ WhatsApp audio files public |
| Firebase Auth | Open signup | Create accounts, access protected resources | fitness-chain: Firebase Auth signup open |
| Firebase SA Key | Service account JSON | GCP IAM escalation, access all GCP resources | fitness-chain: 5 SA keys → full GCP access |
| Supabase REST | Missing RLS | SELECT/INSERT/UPDATE/DELETE on any table | visa-processing-platform: 64K users, 46K reports, DELETE confirmed |
| Supabase Storage | Public buckets | Download all files, upload malicious content | visa-processing-platform: public PDF reports bucket |
| Supabase Auth | Open signup | Create accounts, bypass access controls | dental-booking: open signup + auto-confirm |
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 · 330 lines · 21 tokens per session scan B c5b2e8e0bb10
firebase-supabase-attack is a skill published in the GitHub repository uphiago/recon-skills (1,319 stars, last pushed 1mo ago), licensed MIT. It adds 21 tokens to every session and 4,164 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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