Cossistant

Key features

• Drop-in widget and inbox Ship support inside the product with @cossistant/react and @cossistant/next packages: the homepage documents install in under 10 lines of code with a chat widget and a real-time support inbox.[1][2]

• Self-learning knowledge base The agent builds its answers by crawling docs, resources, and conversations into auto-built FAQs that keep improving as the product and support history evolve.[1]

• Training handoff loop When the agent does not know an answer it asks the team for clarification; the team answers once and the agent reuses that answer next time, so every fix compounds.[1]

• Default tool integrations Out-of-the-box tools cover Linear for logging tickets, Stripe for checking subscriptions, and Cal.com for booking calls, tying support actions to systems teams already use.[1]

• Custom APIs and events Teams can wire their own APIs, custom events, and workflows for actions beyond the defaults, keeping with the code-first, API-driven philosophy in the README.[1][2]

• Model prompt and skills control Teams set the agent's model, prompt, personality, and skills, including bringing their own OpenRouter key on paid tiers, so tone and behavior stay under team control.[1]

• Email reply and notifications Support continues outside the widget through email notifications and reply-via-email, with conversation retention of 30 days on Free and unlimited on paid tiers.[1][2]

• Auto-translate and file sharing The widget and dashboard support auto-translation and file sharing, which helps teams serve customers across languages with screenshots and documents attached.[1][2]

Who will love it

• Next.js SaaS support SaaS teams shipping on React and Next.js get in-app support chat that feels like part of the product, installed as components rather than bolted on as a separate portal.[1][2]

• AI-first lean support Small teams that want overnight and overflow coverage benefit from an agent that answers common questions and escalates only what it cannot resolve, starting at $0 per month.[1][2]

• Developer-led support ops Teams with a developer available gain the most: component install, custom tool wiring, and prompt and skills tuning are all code-adjacent controls.[1][2]

Who should avoid it

• Commercial licence gate The repository is AGPL-3.0 for non-commercial use only, and commercial deployments need a paid commercial licence arranged by email, so businesses must clear licensing before embedding it.[1]

• Free tier caps The Free cloud plan allows 20 conversations, 200 messages, 25 contacts, 1 seat, and 50 AI credits per rolling 30 days, so any real ticket volume needs Hobby at a listed $20 or Pro at $40 per month.[1]

• Young unproven footprint About 729 GitHub stars at observation and no located independent user reports mean buyers adopt on vendor documentation alone, without corroborated reliability or migration evidence.[1][2]

Deployment and fit