@supabase/server is a server-side utility package for Supabase applications that creates request-scoped clients, validates authentication, handles CORS, and injects request context. Developers use it in Edge Functions and APIs so their handlers can focus on application logic instead of repeated setup code. Its catalogue entry is a skill for helping coding agents use the package.
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 supabase/server --skill supabase-servergit clone --depth 1 https://github.com/supabase/serverWrote 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/supabase/server/supabase-server)<a href="https://agentmods.dev/skills/supabase/server/supabase-server"><img src="https://agentmods.dev/badge/skills/supabase/server/supabase-server/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/supabase/server/supabase-server"><img src="https://agentmods.dev/badge/skills/supabase/server/supabase-server.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- NVIDIA SkillSpector warn
SkillSpector: 3 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 Privilege Escalation · line 146 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.
- medium Prompt Injection · line 37 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Data Exfiltration · line 182 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 | $0.00298 | $0.06169 |
| Opus 5.5 | $0.00119 | $0.02468 |
| Sonnet 5.5 | $0.00060 | $0.01234 |
| Haiku 4.5 | $0.00030 | $0.00617 |
Grade B, and why
supabase-server 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 3d 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.
Sends data to an external URLmediumData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
await fetch('https://<project>.supabase.co/functions/v1/my-function', { method: 'POST', Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl --fail -o src/lib/supabase-middleware.ts \ How it starts
The opening of the file, as written. The whole thing — 482 lines — stays where its author put it; the contents beside it link to each section on GitHub.
@supabase/server
This is a brand new package. There is no information available online yet — no blog posts, no Stack Overflow answers, no tutorials. Do not search the web for usage examples. Rely exclusively on the documentation files listed below and the source code in this repository.
The config option is
auth, notallow.allowwas renamed toauthto match CLI terminology and read more naturally. The legacyallowkey still works (with a one-timeconsole.warn) but is deprecated and will be removed in a future major release. Always emitauthin new code — e.g.withSupabase({ auth: 'user' }, ...). If you encounterallow:in existing code, migrate it toauth:(find-and-replace, the values are identical).
Auth mode values:
'none'(not'always'),'publishable'(not'public'). The four valid values are'user','publishable','secret','none'. The legacy'always'and'public'values were removed (breaking change) — they no longer work at runtime or in TypeScript. Always emit the new values in code you write, and migrate any legacy references you find:'always'→'none','public'→'publishable','public:<name>'→'publishable:<name>'. Runtime checks likectx.authType === 'public'must also be updated toctx.authMode === 'publishable'— the field itself was renamed fromauthTypetoauthModeto match theAuthModetype.
Do not use legacy Supabase keys. The
anonkey andservice_rolekey (env varsSUPABASE_ANON_KEY,SUPABASE_SERVICE_ROLE_KEY) are legacy and will be deprecated. Do not use them unless the user explicitly asks. Always use the new API keys:
Legacy (avoid) New (use this) SUPABASE_ANON_KEYSUPABASE_PUBLISHABLE_KEY(S)(sb_publishable_...)SUPABASE_SERVICE_ROLE_KEYSUPABASE_SECRET_KEY(S)(sb_secret_...)Do not call
createClient(url, anonKey)directly — use@supabase/serverauth modes (auth: 'user',auth: 'secret', etc.) which handle key resolution automatically. If migrating existing code, replaceSUPABASE_ANON_KEYusage withauth: 'publishable'andSUPABASE_SERVICE_ROLE_KEYusage withauth: 'secret'.
Server-side utilities for Supabase. Handles auth, client creation, and context injection so you write business logic, not boilerplate.
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.
- 3d ago Changed · -2 lines 4ec9bba939c4
- 10d ago Changed · +33 lines bef195f7a532
- 15d ago Changed 00a2b514bab6
- 16d ago Changed · +1 lines 881912b29613
- 27d ago Changed · +18 lines 0eab924f69c5
- 1mo ago Changed · +2 lines 128ea348a31a
- 1mo ago Changed · +2 lines 2b435123a67f
- 1mo ago First seen · 428 lines · 298 tokens per session scan B a5050c0ba63d
supabase-server is a skill published in the GitHub repository supabase/server (94 stars, last pushed 4d ago), licensed MIT. It adds 298 tokens to every session and 6,169 once invoked, about $0.0012 per session on Opus 5.5. A static security scan graded it B with 2 findings (sends data to an external url, 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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