Backend and APIs

19,654 mods in this category, of every kind an agent can take. Each one carries what it costs per session, what the scan found, and whether it is the original.

effect

625

jpoehnelt/skills

Skill Claude CodeCodex

Apply Effect v4 conventions for services, layers, tagged errors, boundary runners, resources, retries, deadlines, HTTP, and tests. Use when writing or reviewing TypeScript that imports effect, adds a service or error class, chooses where to run a program, bounds external I/O, or tests Effect code.

not rated 23 changed 16d ago A 64 tokens original MIT

bitrix

627

Poliklot/bitrix-agent-skill

Skill Codex

A specialist guide for 1C-Bitrix, a Russian content-management system and online-store platform. It examines the installed project, its standard modules, and local customisations before suggesting work.

not rated 22 changed 5d ago A SkillSpector: warn 267 tokens original MIT

sndev

628

yvain13/Market_research_app

Skill Claude CodeCodex

Build ServiceNow applications using the ServiceNow SDK and Fluent API (TypeScript). Use this skill whenever the user asks to create, scaffold, or generate ServiceNow apps, tables, flows, business rules, script includes, ACLs, or any Fluent-based metadata. Also trigger when the user mentions: "ServiceNow SDK", "Fluent…

not rated 22 5mo ago C 139 tokens

signaltree-events

630

JBorgia/signaltree

Skill Claude CodeCodex

Guides AI agents using @signaltree/events for Zod-validated event schemas, event registries, factories, idempotency, retry classification, and framework subpath integrations (NestJS EventBusModule, Angular WebSocket bridge, entityMap batch-op bridge, optimistic updates, testing utilities). Triggers on…

not rated 22 1mo ago A SkillSpector: pass 139 tokens original Apache-2.0

deapi-setup

631

deapi-ai/claude-code-skills

Command Claude Code

Configure result delivery method for deAPI jobs (polling, webhooks, websockets).

not rated 22 4mo ago A 23 tokens copy · 100% MIT

injection

632

scholarly360/owasp-top10-web-skills

Skill Claude CodeCodex

Expert Python security testing skill for OWASP A05:2025 — Injection vulnerabilities in FastAPI and Flask applications. Use this skill whenever the user asks about: SQL injection, XSS, SSTI (Server-Side Template Injection), OS command injection, ORM injection, LLM prompt injection, input validation, parameterized…

not rated 22 7mo ago A 176 tokens original MIT

jentic-api-improve

633

jentic/jentic-api-scorecard

Agent Claude Code

Iterative OpenAPI improvement subagent. Edits specs to raise JAIRF scores using Python scripts, re-scores via CLI, and produces improved specs and overlays. Spawned by the jentic-api-improve skill — do not invoke directly.

not rated 22 +1 2d ago A 56 tokens original Apache-2.0

openapi.com

634

openapi/mcp-server

MCP server Claude CodeCodexCursor +2

MCP server "openapi.com", hosted remotely at 127.0.0.1, as configured in openapi/mcp-server.

not rated 22 21d ago A tokens not measured original MIT

dmvcframework-jsonrpc

635

danieleteti/delphi-ai-skills

Skill Claude CodeCodex

Use when building or consuming a JSON-RPC 2.0 endpoint with DelphiMVCFramework — publishing a plain Delphi class as remotely callable methods, or calling one from a Delphi client. Triggers on "JSON-RPC", "JSONRPC", "MVCFramework.JSONRPC", "RPC method", "PublishObject", "TMVCJSONRPCController", "TMVCJSONRPCPublisher"…

not rated 22 +1 changed 1mo ago A 139 tokens original Apache-2.0

laravel-api

636

streeboga/laravel-api-skill

Skill Claude CodeCodex

A guide and code-generation skill for building Laravel web APIs using JSON:API, a standard format for returning structured data over HTTP. It prescribes separate layers for handling requests, business logic, database access, and queries.

not rated 22 changed 4d ago A 175 tokens original MIT

theauth

637

glincker/theauth

Skill Claude CodeCodex

Install and use theAuth (@glinr/theauth), the TypeScript auth SDK for AI agents and humans. Use when adding agent identity, scoped permissions, delegation, audit logs, human sign-in plugins, or an MCP OAuth 2.1 authorization server to a Node, Bun, Deno or edge project.

not rated 22 +2 changed 19d ago A 67 tokens original MIT

drupal-contribute-fix

638

scottfalconer/drupal-contribute-fix

Skill Claude CodeCodex

Investigate bugs in Drupal core or contributed modules, themes, and profiles. Search Drupal.org for existing work before code changes. Prepare local diffs, reproduction steps, and review evidence for contribution. Use for local fixes as well as upstream contribution work.

not rated 21 changed 19d ago A 57 tokens

mcp-n8n

639

leonardosepulvedat/mcp-n8n

MCP server Claude CodeCodexCursor +2

Operate and build n8n: 61 tools, 560-node catalog, validation, autofix, snapshots and backups. Runs locally from the mcp-n8n npm package. Needs 3 environment variables to run.

not rated 21 4d ago A tokens not measured original MIT

aws-samples/sample-agent-greenhouse

Skill Codex ✓ vendor

Build and deploy a small Slack Events API adapter for an Amazon Bedrock AgentCore Harness, with incremental responses delivered through Slack chat.startStream, chat.appendStream, and chat.stopStream. Use when a customer wants to create or reuse an AgentCore Harness, expose it as a Slack bot, stream InvokeHarness…

not rated 21 3mo ago A 142 tokens MIT-0

mcp-builder

641

blackzhuge/zhuge-workflow

Skill Claude CodeCodex

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

not rated 21 8mo ago A 61 tokens

mcp-rules

642

tienan92it/binance-mcp

Cursor rule Cursor

Cursor rule "mcp-rules" from tienan92it/binance-mcp, covering architecture & code structure, agent registration & session management, strategy execution, mcp protocol compliance & message handling and data modeling.

not rated 21 1y ago A 0 tokens original MIT

nodejs-project-arch

643

abczsl520/nodejs-project-arch

Skill Claude CodeCodex

Node.js project architecture standards for AI-assisted development. Enforces file splitting (<400 lines), config externalization, route modularization, and admin dashboards. Use when creating new Node.js projects, refactoring large single-file codebases, or when AI context window is being consumed by oversized files.…

not rated 21 17d ago A 100 tokens original MIT

footprint

644

footprintjs/footPrint

Skill Claude CodeCodex

Use when building flowchart pipelines with footprintjs — stage functions, decider branches, selectors, subflows, loops, narrative traces, recorders, redaction, contracts, and LLM-ready output. Also use when someone asks how footprint.js works or wants to understand the library.

not rated 21 changed 2d ago A SkillSpector: warn 60 tokens original MIT

auth-required

645

apisec-inc/apisec-skills

Cursor rule Cursor

Enforces authentication middleware on all API route handlers. Applies to Express, FastAPI, Django, Spring, Go Gin.

not rated 21 changed 1mo ago A 247 tokens original MIT

stitchapi-docs

646

rejifald/StitchAPI

MCP server Claude CodeCodexCursor +2

StitchAPI documentation search, running locally over MCP stdio. Bundled docs, no network calls per query — the offline/air-gapped counterpart to the hosted stitchapi.dev/api/mcp server. Runs locally from the @stitchapi/docs-mcp npm package.

not rated 21 yesterday A tokens not measured original Apache-2.0

web

648

securityfortech/hacking-skills

Plugin Claude Code

Bundles 28 skills · 2,564 tokens together

Web application security skills covering recon, authentication, authorization, session management, injection, client-side attacks, and business logic. Distilled from OWASP WSTG, security research, and bug bounty writeups.

not rated 21 +1 7mo ago A tokens not measured

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