API Integration

MMO game for AI agents: mine, trade, craft, explore, and battle in a galaxy of ~500 systems

by statico-alt

Spacenews MCP — wraps the Spaceflight News API v4 (free, no auth)

by pipeworx-io

SpaceX MCP — wraps SpaceX API v4 (free, no auth)

by pipeworx-io

MCP server for SpamTitan email security — quarantine, allow/block lists, and policy management.

by wyre-technology

MCP server for Spanning Cloud Backup — M365/GWS/Salesforce backups, restores, audit.

by wyre-technology

20+ pay-per-use APIs: image gen, crypto data, email verify, SSL check, web scraping, and more.

by sparkforge

Converts Solidity smart contracts into RESTful API implementations, enabling applications to interact with blockchain contracts without requiring deep blockchain knowledge.

Instantly turn OpenAPI Specs into MCP Tools

by TBosak

# Stop Building Features Based on Assumptions **Spec Iterator** conducts structured AI-powered clarification sessions that systematically uncover gaps in your requirements *before* you write code. --- ## The Problem Everyone Ignores ``` Stakeholder: "Build a dashboard for our sales team" ↓ You build it ↓ Stakeholder: "Where's the pipeline view?" ↓ You: "You didn't mention that" ↓ Stakeholder: "I assumed it was obvious" ↓ 💸 2 weeks of rework ``` **Requirements arrive incomplete.** Stakeholders don't know what they don't know. The "obvious" features only become obvious after you ship the wrong thing. --- ## How Spec Iterator Works ``` ┌─────────────────────────────────────────────────────────────┐ │ "We need order tracking for customers" │ └─────────────────────────────────────────────────────────────┘ ↓ ┌─────────────────────────────────────────────────────────────┐ │ 🔍 ANALYZE │ │ ───────────────────────────────────────────────────────── │ │ • Entities detected: orders, customers, tracking │ │ • Gaps found: users undefined, stages unclear, no UX │ │ • Completeness: 12% │ └─────────────────────────────────────────────────────────────┘ ↓ ┌─────────────────────────────────────────────────────────────┐ │ ❓ CLARIFY (Round 1) │ │ ───────────────────────────────────────────────────────── │ │ 1. Who are the primary users of this tracking system? │ │ 2. What order stages should be visible to customers? │ │ 3. Should users receive notifications? Which events? │ │ 4. What systems contain order data today? │ └─────────────────────────────────────────────────────────────┘ ↓ [You provide answers] ↓ ┌─────────────────────────────────────────────────────────────┐ │ ❓ CLARIFY (Round 2) — Completeness: 48% │ │ ───────────────────────────────────────────────────────── │ │ 1. Email or SMS for notifications? Or both? │ │ 2. Real-time tracking needed or periodic updates? │ │ 3. What about returns and exchanges? │ │ 4. Mobile app or web only? │ └─────────────────────────────────────────────────────────────┘ ↓ [You provide answers] ↓ ┌─────────────────────────────────────────────────────────────┐ │ ✅ READY — Completeness: 84% │ │ ───────────────────────────────────────────────────────── │ │ All critical gaps resolved. Ready to generate spec. │ └─────────────────────────────────────────────────────────────┘ ↓ ┌─────────────────────────────────────────────────────────────┐ │ 📄 GENERATE │ │ ───────────────────────────────────────────────────────── │ │ • Problem statement with user personas │ │ • Step-by-step user flow │ │ • Features with acceptance criteria │ │ • Edge cases with handling strategies │ │ • Documented assumptions │ │ • Open questions for stakeholders │ └─────────────────────────────────────────────────────────────┘ ``` --- ## Completeness Scoring Track exactly what's missing across **5 categories**: | Category | Weight | What It Covers | |----------|--------|----------------| | **Functional** | 30% | Features, users, business rules | | **Technical** | 25% | Integrations, data, APIs | | **UX** | 20% | Flows, errors, accessibility | | **Edge Cases** | 15% | Errors, boundaries, recovery | | **Constraints** | 10% | Budget, compliance, scale | **Example output:** ``` Completeness: 73% ├── Functional: ████████░░ 85% ├── Technical: ██████░░░░ 60% ├── UX: ███████░░░ 75% ├── Edge Cases: █████░░░░░ 55% └── Constraints: ████████░░ 80% ⚠️ Technical gaps: Data refresh frequency, API rate limits ⚠️ Edge cases: Offline handling, partial order updates ``` --- ## Tools Included | Tool | Description | |------|-------------| | `spec_start_session` | Start clarification from a rough requirement | | `spec_answer_questions` | Provide answers, receive follow-up questions | | `spec_get_gaps` | See exactly what's missing and the impact | | `spec_generate` | Generate complete specification | | `spec_get_status` | Check session progress | | `spec_list_sessions` | List all active sessions | --- ## Sample Output ```markdown # Order Tracking System ## Problem Statement **Pain:** Customers have no visibility into order status after purchase **Who:** E-commerce customers, support team **Workarounds:** Calling support, checking email for shipping updates ## Features ### 1. Order Status Page (MVP) Customers can view real-time order status on a dedicated page. **Acceptance Criteria:** - [ ] Display order stages: Confirmed → Processing → Shipped → Delivered - [ ] Show estimated delivery date - [ ] Update within 5 minutes of status change - [ ] Accessible without login via order ID + email ### 2. Email Notifications (MVP) Automated emails at key order milestones. **Acceptance Criteria:** - [ ] Send on: order confirmed, shipped, out for delivery, delivered - [ ] Include tracking link when available - [ ] Unsubscribe option per notification type ## Edge Cases | Scenario | Handling | |----------|----------| | Order stuck in "Processing" > 48h | Trigger support alert | | Tracking number not yet available | Show "Tracking available soon" | | Multiple shipments per order | Show each shipment separately | ``` --- ## Who It's For **Product Managers** → Stop missing requirements that cause rework **Tech Leads** → Don't estimate incomplete requirements **Solo Developers** → Think through requirements systematically **Startup Founders** → Document ideas with implementation detail **Consultants** → Standardize discovery across clients --- ## Configuration Requires your Anthropic API key: | Parameter | Description | |-----------|-------------| | `ANTHROPIC_API_KEY` | Your Anthropic API key | **You pay Claude directly** — typical spec costs $0.05-0.15 in API usage (3-5 rounds of clarification). --- ## Quick Start 1. **Connect** Spec Iterator in Claude Desktop 2. **Run:** `spec_start_session` with your rough requirement 3. **Answer** the clarifying questions 4. **Generate** when completeness hits 80%+ --- ## Resources - **GitHub:** [Repository](https://github.com/JesseHenson/claude_code_apex_marketplace/tree/master/plugins/spec-iterator-mcp) - **Demo:** Coming soon - **Support:** Open an issue on GitHub --- ## Version **v0.1.0** — Initial release - Multi-turn clarification flow - Completeness scoring (5 categories) - Markdown and JSON output - Session persistence Site: https://aibusinessautomation.solutions/

Python intent tracing MCP: map specs to pytest tests, monitor implementation progress, offline-only.

by SpecLeft

MCP server that turns OpenAPI specs into tools and calls API

by pavelpiha

MCP server for expense tracking, invoices, budgets, and financial insights directly in Claude

by makz81

AI agent spending controls. Set limits, blocklists, and caps. Approve transactions from your phone.

by gstack-ds

Sperax Protocol MCP – USDs stablecoin, SPA, veSPA governance & Demeter DeFi on Arbitrum

by nirholas

Manage SpherePay customers, bank accounts, wallets, and transfers from Claude.

by danchev

Governance runtime for AI agents with signed provenance, compliance audits, and OSINT.

by Ratnaditya-J

A/B testing for vibe coders: create, track, and ship experiments from your AI coding agent.

by sohaibt

An MCP server for working with Spline 3D design tool API

by aydinfer

Sports MCP — wraps TheSportsDB API (free tier, test key 3, no auth required)

by pipeworx-io

Create gasless market, limit, TWAP, stop-loss, take-profit, and delayed-start swap orders.

by orbs-network

Full Spotify Web API coverage - albums, artists, playlists, player controls, and more.

by akutishevsky

MCP Server for interacting with Spotify API. Written in TypeScript, Node and Hono.dev

by iceener

AI-native project management with persistent memory across IDEs (Claude, Cursor, Codex).

by Sprintra-io

Model-tiered content pipeline — cheap models seed, expensive models verify

by mepsopti

Provides San Antonio Spurs basketball news by scraping the Pounding The Rock blog, offering tools to retrieve articles, search content, extract game results, and get player information with recent mentions.