api-hardening SKILL.md skillA
api-hardening from chadixearth/graphyloop is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add chadixearth/graphyloop/api-hardening@git:20260816.37028bbPins git:20260816.37028bb in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- chadixearth/graphyloop
- Path
skills/api-hardening/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260816.37028bb, committed Aug 16, 2026
- Size
- 7,556 bytes
- Repository stars
- 3
- License
- MIT
Use this skill when building or reviewing a server-side endpoint, route handler, server action, webhook, cron job, or background worker in any language. Covers per-route authorization and IDOR, input validation at the trust boundary, rate limiting, SSRF, file uploads, JWT and session handling, tenant isolation, and error or log leakage.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# API hardening Most breached endpoints were authenticated. The pattern is not "no login" — it is "logged in, and the handler never checked that this row belongs to this caller." Authorization is per route, per object, every time. This skill is the server-side pass that goes route by route. ## When to activate - Any new or changed endpoint: REST route, GraphQL resolver, RPC/tRPC procedure, server action, webhook receiver, queue consumer, cron entry. - Anything touching auth, sessions, roles, tenants, payments, uploads, or PII. - A bug report shaped like "user A can see user B's data" or "it 500s with a weird message". - Before a deploy that exposes a new surface publicly. ## Route inventory first Enumerate what exists before judging it. Grep the router, not your memory: ``` # Node/Next rg -n "app\.(get|post|put|patch|delete)|router\.(get|post|put|patch|delete)" src rg -n "export async function (GET|POST|PUT|PATCH|DELETE)" app rg -n "'use server'" -l app src # Python / Go / PHP rg -n "@app\.(route|get|post)|@router\.(get|post)" . rg -n "http.HandleFunc|mux.Handle" . rg -n "Route::(get|post|put|delete)" routes ``` …
Read the whole file at its exact version.
How to install
mdr add chadixearth/graphyloop/api-hardening@sha256:10225ad2de42623dThe line at the top of this page pins the label git:20260816.37028bb, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_fskdcbmpyae4wx2v)
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Versions
The registry has recorded 1 version of this file, committed on Aug 16, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7556 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
chadixearth/graphyloop · 3 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_fskdcbmpyae4wx2v GET https://markdownregistry.com/api/v1/resolve?ref=chadixearth/graphyloop/api-hardening GET https://markdownregistry.com/api/v1/blob/10225ad2de42623dd5e402709abdf8029a81ab67570a3ee7305864638af07183
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
More from chadixearth/graphyloop
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