AI Agent Skills Marketplace

reddit-post-drafter

by Roy Yuen

Free

Draft and lint Reddit posts calibrated for developer subreddits to avoid removals and maximize engagement.

📝 Prompt Template Linter

by JustHandled Labs

$12

or 60 cr

Lint a prompt template for the issues that cause injection and flaky output. Flags untrusted variables interpolated straight into the instructions (the injection surface), placeholders that are never provided or never used, contradictory instructions, a missing output-format spec where the result is parsed, unbounded context interpolation, and leftover placeholders. It detects problems; it does not write prompts.

n8n Workflow QA Linter

by JustHandled Labs

$19

or 95 cr

Lint an exported n8n workflow before it ships: catches broken or duplicated nodes, missing error handlers, credential stubs, unhandled retries, unsafe webhooks, brittle expressions, and missing idempotency. A read-only pass over your workflow JSON that ranks production-readiness gaps with evidence and concrete fixes.

🛡️ Ad Copy Policy Linter

by JustHandled Labs

$12

or 60 cr

Check ad copy for the editorial issues that get Google and Meta ads disapproved, before you submit. Flags all-caps words, gimmicky punctuation (!!, ??), prohibited and hype words, Meta's banned personal-attribute framing ("Are you over 40?"), absolute or unsubstantiated claims, ad-field length overflow, and trademark-term risk. The word lists and field limits are editable, so you can tune it to your accounts.

🛡️OpenAPI Contract Guard

by JustHandled Labs

$12

or 60 cr

Lint an OpenAPI spec and diff two versions to catch breaking API changes before they reach consumers. Within a spec it flags missing operationId, success responses with no schema, untyped parameters, operations with no security requirement, and unbounded arrays/strings. Across two versions it flags removed paths and operations, removed response codes, a parameter becoming required, narrowed parameter types, removed enum values, and removed response fields. Analyzes JSON specs (convert YAML to JSON first).

⚔️ Guardrail Fallback Linter

by JustHandled Labs

$12

or 60 cr

Find the LLM integration code that breaks when a model blocks a response or falls back to a different model. Flags calls with no try/except or refusal branch, responses used or parsed with no guard for a blocked or empty answer, and hardcoded model ids with no fallback handling. Built for the Fable 5 era, where a high-risk call is blocked and silently falls back to Opus 4.8.

🎨 Brand Consistency Linter

by JustHandled Labs

$12

or 60 cr

Hold your bios, footers, and profiles to one brand spec. Flags brand-name spelling and casing that does not match your canonical form, off-spec taglines, links that are not on your official list, leftover placeholders (Lorem, TODO, "your tagline here"), and handles that differ from one surface to the next. You define the spec once and it enforces it everywhere.

📏 Handle Rules Linter

by JustHandled Labs

$9

or 45 cr

Check a desired handle against every platform's username rules and find the form that works everywhere. Flags handles that break a platform's length limits, use a disallowed character (like a period on YouTube or TikTok), or start with a disallowed character, and recommends the safe consistent form (4 to 15 lowercase alphanumeric). Covers X, Instagram, TikTok, YouTube, Twitch, GitHub, and Bluesky. It checks the rules, not availability.

🧰 Tool Schema Linter

by JustHandled Labs

$12

or 60 cr

Lint the function-calling tool definitions your agent exposes. Flags tools with no description, parameters missing a description or a type, overlapping or near-duplicate tools, too many tools for reliable selection, an unsafe tool exposed without a guard, required parameters missing from the schema, and free-form parameters that should be bounded with an enum. Cleaner tool schemas mean an agent that picks the right tool.

🤖 AGENTS.md Linter

by JustHandled Labs

$12

or 60 cr

Lint your AGENTS.md (or CLAUDE.md and .cursorrules) for the problems that make a coding agent misbehave. Flags contradictory rules, references to files and commands that no longer exist, overly broad or unsafe instructions, missing sections (build, test, run, conventions), duplicate rules, and the case where you have competing rule files that should be consolidated into one AGENTS.md.

⚠️ Dangerous Command Linter

by JustHandled Labs

$12

or 60 cr

Flag the destructive operations in a shell command or script before anyone runs it. Catches recursive force deletes, force pushes and history rewrites, database drops and truncates, disk-wipe commands (mkfs, dd to a device), permission blowouts (chmod 777), remote content piped into a shell, broad wildcard deletes, and prod-targeting or disabled-safety flags. Each finding comes with a severity and a safer alternative.

Turn your photos and shopping order screenshots into a structured, searchable JSON wardrobe database with AI vision and automated linting.

Enforce security, reliability, and deployment best practices for Docker Compose files.

Detect and fix the 9 most expensive PySpark anti-patterns to slash your Spark compute costs.

Scaffold or harden a production-grade GitHub Actions pipeline for WordPress — with a blocking lint gate that stops broken code before it deploys, and a fail notification that makes silent deployment failures impossible.