Integrations & APIs
Integration agent skills teach AI agents to work with specific external services and APIs: third-party platforms, webhooks, MCP servers, and data syncs. Instead of re-explaining an API every session, install the skill and the agent knows the endpoints and conventions.
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uphiago Skill Hunt OAUTHHunting skill for oauth vulnerabilities. Built from 19 public bug bounty reports. Use when hunting oauth on any target.
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uphiago Skill Recon PlaybookUse when starting or restructuring an authorized external web and API assessment.
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uphiago Skill Hunt SessionHunt Session Management vulnerabilities — session fixation (no regeneration on login), insufficient invalidation on logout / password-change / email-change, predictable or low-entropy session IDs, JWT-as-session with no exp/revocation, refresh-token rotation/reuse-detection gaps, OAuth/SSO session linkage, device-bound-session (DBSC) downgrade, and cookie attribute issues (Secure/HttpOnly/SameSite/__Host-). Validate with TWO real sessions (attacker A + victim B), body-diff every 200, and OOB confirmation for theft chains. Medium to Critical (fixation→admin hijack, no-invalidation→persistent ATO).
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uphiago Skill API Noauth HuntUse when an API may expose data or privileged operations without authentication.
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uphiago Skill Hunt WordpressUse when an authorized target exposes WordPress core, plugin, theme, REST, or XML-RPC behavior.
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uphiago Skill Hunt Write GapHunt read-protected write-gaping endpoints. PATCH/POST/DELETE without authorization while GET is protected. Agnostic: Supabase, Firebase, REST, GraphQL.
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uphiago Skill Hunt Mfa BypassHunt MFA / 2FA bypass — 7 distinct patterns. (1) MFA not enforced on sensitive endpoints (password change, email change accept without MFA challenge), (2) MFA-step skip via direct navigation to post-login URL, (3) MFA-token replay (same code accepted twice), (4) brute-force the 6-digit OTP without rate limit (10^6 attempts at server speed), (5) race condition on OTP validation, (6) recovery-code dump via /api/me, (7) backup factor downgrade (SMS factor with no rate limit). Plus the chain: cookie theft + password oracle + no step-up = ATO without MFA challenge. Detection: trace auth flow in Burp, find every state transition, check if MFA is middleware-gated vs per-endpoint, check OTP entropy and rate limit on OTP-validate. Validate: attacker session reaching post-MFA state. Use when hunting auth bypass, MFA flows, chaining primitives toward ATO.
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uphiago Skill Hunt Auth BypassHunting skill for auth bypass vulnerabilities. Built from 12 public bug bounty reports across SAML XSW / parser-differential (GitHub Enterprise CVE-2025-25291/25292), SAML signature stripping (Uber, Rocket.Chat, samlify CVE-2025-47949), SAML domain enforcement bypass via control characters (HackerOne 2024), partner-portal cross-IdP assertion reuse (Slack), WordPress XMLRPC bypassing SSO (Uber), JWT alg-confusion HS256/RS256 (Jitsi), JWT signature-validation skip (Linktree, Newspack), and token-audience confusion (Argo CD CVE-2023-22482). Use when hunting auth bypass — see the Legacy-Protocol Matrix for branded-UI vs legacy-endpoint patterns.
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uphiago Skill Hunt Open RedirectHunt Open Redirect — all types including low-impact, chained to OAuth token theft → ATO, phishing chains. URL parameter manipulation, JavaScript redirect, meta refresh, header injection. Use when hunting redirect bugs or building ATO chains.
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uphiago Bundle JS Secrets ExtractionAnalyze JS bundles and source maps for hardcoded secrets, API keys, JWTs, and internal endpoints
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uphiago Skill Hunt Business LogicHunting skill for business logic vulnerabilities. Built from 12 public bug bounty reports. Covers coupon-race-stacking (Instacart, Stripe, Reverb), negative-quantity-in-cart price tampering (Upserve, Eternal/Zomato), decimal/fraction price-field overflow (Shipt), client-side checkout amount trust on PayPal redirect (WordPress.org), price-per-unit mass-assignment (Krisp), and archived-price swap / cart-TOCTOU (Stripe). Use when hunting business logic — heavy emphasis on financial-impact-demonstrated cases.
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uphiago Skill Cors Chain AutomationUse when a bounded list of authorized API endpoints needs consistent CORS triage before browser validation.
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uphiago Skill Hunt Schema EnumerationEnumerate hidden tables, fields, and endpoints via API error hints. Agnostic across PostgREST, Zod, FastAPI, GraphQL, and REST.
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build-with-dhiraj Skill Flutter Testing AppsImplement unit, widget, and integration tests for a Flutter app. Use for code quality and regression prevention.
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grandamenium Skill OpencliTurn any website into a CLI command by driving Chrome's live session. Use when you need structured data from a site that has no API or where the API is inadequate — reads the browser's actual session (logged-in state, cookies) to extract data. Requires Chrome + Browser Bridge extension setup (one-time).
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grandamenium Skill Claude API HelperBuild applications with the Claude API and Anthropic SDKs. Covers Messages API, streaming, tool use, vision, and best practices.
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xspoonai Bundle API Integration HelperAI-powered API integration toolkit for endpoint mapping, schema validation, authentication management, and rate limiting analysis. Maps endpoints from code, validates JSON schemas, detects auth schemes, and analyzes rate limiting strategies.
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xspoonai Bundle Messaging Slack NotifyDescription
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xspoonai Bundle Flash Loan Arbitrage ExecutorProduction-ready DeFi arbitrage system that detects and executes profitable price differences across multiple DEXs using Aave V3 flash loans. Real smart contract integration with Uniswap V3, Curve, and SushiSwap.
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xspoonai Bundle Defi Yield ScoutFind, compare, and risk-score DeFi yield opportunities across 20+ protocols and 10+ chains. Includes impermanent loss calculator and strategy recommendations. No API keys required.
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xspoonai Bundle Evm Tx DebuggerDebug failed EVM transactions by decoding revert reasons, analyzing gas consumption, parsing events, and explaining execution errors across 7 chains. No API keys required.
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xspoonai Bundle Bridge AnalyzerCompare, analyze, and risk-score cross-chain bridges across 30+ bridge protocols. Find optimal routes, monitor TVL changes, and detect anomalies. No API keys required.
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xspoonai Bundle Account Abstraction PaymasterProduction-ready ERC-4337 Account Abstraction Paymaster infrastructure for sponsoring gas fees with policy controls, real EntryPoint v0.6.0 integration, and multi-chain support. Build, validate, and submit UserOperations with whitelist, limits, and token-gating.
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spike-faye-lei Skill Arkts ReviewArkTS/HarmonyOS 代码审查与修复。Use when reviewing or fixing .ets files, HarmonyOS compilation errors, ArkTS type issues, or API deprecation warnings. Covers SDK API 12-24 breaking changes, @kit.* vs @ohos.* imports, strict mode rules, and camera/filesystem API migration.
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h-mmer Skill NewCreate a new engagement workspace. Usage: /new <platform> <program> [--type web-app|api|mobile|smart-contract]
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xspoonai Bundle API Webhook SignerDescription
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xspoonai Skill Workflow AutomationAutomate complex workflows and repetitive tasks using AI agents and tool integration. Use when user wants to create automated pipelines, integrate multiple services, or build task-specific agents.
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xspoonai Bundle API Contract DiffDescription
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xspoonai Bundle Santiment APIQuery the Santiment GraphQL API for on-chain, financial, social, and development crypto metrics across 2,000+ assets
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garphengate Skill API ArchitectRun 12 questions against any endpoint before it ships to catch the mistakes that become permanent. Use as the final gate before merging any API change.
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uphiago Skill Wp Plugin REST Auth BypassScan WordPress REST API plugin endpoints for unauthenticated state-changing operations — discover write endpoints (POST/PUT/PATCH/DELETE) exposed without auth, enumerate all plugin routes, and test for unauthorized content publishing, settings modification, and data leakage.
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openlabor Skill Stripe ManagerManage customers, invoices, subscriptions, payments, and billing via Stripe Composio connector
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openlabor Skill API DesignDesign and document APIs
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brucesongs Bundle Open Banking AttackOpen Banking / PSD2 / Open Finance attacks — FAPI (Financial-grade API), OpenID Connect for Financial APIs, OAuth2 PKCE, Strong Customer Authentication (SCA) bypass, AIS/PIS/CBPII API abuse, payment redirection, consent manipulation. Covers UK Open Banking, US FDX, Brazil Open Finance, India Account Aggregator, Singapore MAS APIX, Australia CDR. Includes 2024-2025 incidents (Token Hijacking, IdOR on AIS endpoints, PIS redirect manipulation).
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brucesongs Bundle Red Team InfrastructureBuilding, deploying, and operating stealthy C2 infrastructure for red team engagements. Covers Mythic, Havoc, Sliver, Covenant, PoshC2, Brute Ratel, and Cobalt Strike; redirector chains (Nginx mTLS, Cloudflare workers, CDN domain fronting); dead-drop resolvers; infrastructure OPSEC (compartmentalized servers, auto-rotated certs, decoupled domains); AMIS/GoDaddy API for automated rotation. Use when deploying dedicated adversary emulation infrastructure, planning redirector chains, or testing OPSEC resilience of red team operators.
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zhouyinlong-lab Skill Ghostwriter【从零创作】AI 代笔专家——用你自己的语气从零写新消息,不是改已有文本。 分析你的历史消息提取语气特征后,帮你写邮件/Slack/微信回复,读起来像你本人在打字。 如需修改已有文本去AI味,用 humanizer-zh。 Trigger keywords: 代笔, ghostwriter, 帮我回复, 代写消息, 模仿我的语气, 写邮件, 回微信, 回Slack, 用自己的话, 自然语气, 像我自己写的, 个人风格, 帮我写个回复。
Frequently asked questions
What are Integrations & APIs agent skills?
Integration agent skills teach AI agents to work with specific external services and APIs: third-party platforms, webhooks, MCP servers, and data syncs. Instead of re-explaining an API every session, install the skill and the agent knows the endpoints and conventions.
Which Integrations & APIs skills are most installed?
Popular Integrations & APIs skills on SkillMD right now include hunt-oauth, recon-playbook, hunt-session. Rankings shift as installs change; sort this page by "Most installs" for the live list.
Do Integrations & APIs skills work with Claude Code and Cursor?
Yes. Every skill here ships as a SKILL.md file, an open format that works in Claude Code, Claude.ai, Cursor, Codex, Windsurf, and 60+ other agents. Install one with npx skillmds@latest add <owner>/<name>, or copy the file into your agent's skills directory.