API & Backend Generation AI Tools

AI-powered spreadsheet with built-in web data connections and automation.

Rows is a spreadsheet tool that connects directly to web APIs and services, with AI functions that can generate formulas, summarize data, and pull in live data (like social stats or stock prices) without manual copy-pasting.

• AI-generated spreadsheet formulas from plain-language prompts
• Built-in connections to live web data sources
• Automation for recurring data refreshes
• Shareable, embeddable spreadsheet views

Turns a script, image, or recording into a talking-avatar video, plus interactive AI video agents.

D-ID generates videos of AI avatars — stock or a personal clone — speaking a script with a matched cloned or synthetic voice, and can also build interactive "visual agents" that respond live in real time. It runs on a credit system shared across Studio and API use, where longer or higher-quality videos consume more credits, and unused credits expire when a plan renews. Personal, non-commercial use starts on the Lite plan; commercial rights begin at Pro.

• Script, image, or recording-to-avatar video generation
• Personal avatar creation and voice cloning
• Interactive real-time visual agents, not just static video
• Multi-language video translation for existing footage
• Credit-based pricing — cost scales with video length and quality
• Commercial usage rights start at the Pro plan

French AI lab offering open and commercial LLMs plus the Le Chat assistant.

Mistral AI builds open-weight and proprietary large language models and offers Le Chat, a consumer chat assistant, alongside an enterprise API platform positioned as a European alternative to OpenAI and Anthropic.

• Open-weight model options
• EU-based, data-residency friendly
• Le Chat assistant
• Competitive API pricing

AI-assisted crypto tax software that calculates gains across exchanges and wallets.

TokenTax pulls transaction data from crypto exchanges and wallets and uses AI-assisted reconciliation to calculate capital gains and generate tax forms, even across complex DeFi activity.

• Cross-exchange/wallet transaction reconciliation
• DeFi and complex transaction support
• Automated tax form generation

No-code platform for building a custom AI chatbot trained on your own website, documents, and data.

Chatbase lets teams build a GPT-powered chatbot by feeding it a website, PDFs, or other documents, then embed it on a site or connect it to channels like Slack or WhatsApp. It supports AI Actions for triggering workflows or API calls from within a conversation, plus analytics on what visitors ask. Usage is billed on monthly message credits per plan, with add-on credit packs available for teams that exceed their tier's allowance.

• Trains a chatbot on your website, PDFs, and other documents
• AI Actions let the bot trigger workflows or call external APIs
• Multi-channel deployment (website widget, Slack, WhatsApp, and more)
• Analytics on conversations and unanswered questions
• Free tier: 1 agent, 50 message credits/month
• Paid tiers add more agents, credits, API access, and integrations

Developer platform for building AI voice agents that handle phone calls for support and sales.

Retell AI provides an API and low-code tools for building AI phone agents that can answer inbound calls or make outbound calls, following custom scripts and integrating with business systems like CRMs and calendars. It focuses on reliable telephony infrastructure alongside the conversational AI layer.

• Inbound and outbound AI phone agents
• Telephony infrastructure included
• CRM and calendar integrations
• Custom conversation scripting

AI image upscaler and quality enhancer for photos and product images.

Let's Enhance upscales low-resolution images while improving sharpness and detail, with presets tuned for photography, real estate, and e-commerce product photos, available via web app or bulk API processing.

• Presets for photo, real estate, and product images
• Bulk processing via API
• Detail enhancement, not just upscaling
• Batch editing tools

Prompt management and LLM observability platform for teams.

PromptLayer logs every LLM API call a team makes, letting engineers search and replay past prompts, track cost and latency, and manage prompt versions in a visual editor separate from application code — aimed at teams running many LLM calls in production.

• Full LLM request logging and search
• Visual prompt versioning and editing
• Cost and latency tracking

API platform for accessing wearable and lab health data with AI-ready normalization.

Vital gives developers a single API to pull data from wearables, labs, and health apps, normalizing it into a consistent format that's ready to feed into AI-powered health products.

• Unified wearable/lab data API
• Normalized data format across sources
• Built for AI-powered health products

AI-assisted digital physical therapy program for joint and muscle pain.

Hinge Health pairs wearable motion sensors with AI feedback to guide people through physical therapy exercises at home, supported by human physical therapists and health coaches.

• AI motion tracking during exercises
• Combined with human PT and coach support
• Employer-sponsored benefit model