Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
From the blog
The 2024 NPRM mandates annual pen tests by name. AI voice agents need a new test methodology — prompt injection, jailbreaks, tool misuse, voice cloning. Here is the 2026 playbook.
A complete walkthrough for building a custom MCP server: FastMCP for Python, the official TypeScript SDK, the JSON-RPC spec, stdio vs streamable HTTP, and OAuth 2.1 with PKCE.
Vocode-core is the modular open-source voice framework with first-class Twilio + Vonage telephony. Here's a phone-ready Vocode agent talking to Ollama with a Deepgram fallback.
Every PR that touches a prompt, tool, or model should run the eval suite and block on regression. Here is the GitHub Actions setup we ship across 37 agents.
The 2026 vector DB market consolidated to four serious products. Pinecone is fastest to deploy. Qdrant has the best price-performance. Weaviate wins on hybrid. Chroma is the dev sandbox. Here is the buyer's guide.
Blue/green deploy an AI voice agent without dropping calls. ALB stickiness, draining timeouts tuned for WebSockets, Redis-backed session state, and a clean cutover.
Stripe and OpenAI codeveloped the Agentic Commerce Protocol with Shared Payment Tokens. Here is how 2026 chat agents render Stripe checkout inline and close sales without redirects.
Where enterprise agentic AI is going next — longer autonomy, agent-to-agent coordination, richer MCP connectors — and how to make your deployment ready.
The metrics that prove a Claude Cowork rollout works: activated users, throughput, output-quality evals, trust signals, and the leading indicator of churn.
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