Agents SDK v0.14.0: Agent Skills, messengers, scheduled tasks, Workflows, and hardened chat recovery

The latest release of the Agents SDK adds four new ways to build with @cloudflare/think: on-demand Agent Skills, chat messengers (starting with Telegram), declarative scheduled tasks, and durable reasoning steps inside Workflows. This release also significantly hardens durable chat recovery, so turns reliably ride through deploys, evictions, and stalled model streams in production.

Agent Skills (experimental)

Give an agent a catalog of on-demand instructions, resources, and scripts. A skill source adds a catalog to the system prompt, and the model activates a skill only when a task matches — so a large library of capabilities does not bloat every prompt.

import { Think, skills } from "@cloudflare/think"; import bundledSkills from "agents:skills"; export class SkillsAgent extends Think { getSkills() { return [ bundledSkills, skills.r2(this.env.SKILLS_BUCKET, { prefix: "skills/" }), ]; } }

import { Think, skills } from "@cloudflare/think"; import bundledSkills from "agents:skills"; export class SkillsAgent extends Think<Env> { getSkills() { return [ bundledSkills, skills.r2(this.env.SKILLS_BUCKET, { prefix: "skills/" }), ]; } }

The agents:skills import bundles a local ./skills directory through the Agents Vite plugin (one directory per skill, each with a SKILL.md). Skills can also load from R2 or a manifest. When skills are available, Think exposes activate_skill, read_skill_resource, and an optional run_skill_script tool. Skill loading is resilient: a duplicate or failing source is skipped with a warning instead of breaking the agent.

Agent Skills are experimental, and script execution in particular is early. The API may change in a future release. We would love your feedback — tell us what you are building and what is missing in the Agents repository.

Messengers

Connect a Think agent directly to a chat platform. Think owns the webhook route, conversation routing, durable reply fiber, and streamed delivery back to the provider. Telegram ships as the first provider.

import { Think } from "@cloudflare/think"; import { defineMessengers, ThinkMessengerStateAgent, } from "@cloudflare/think/messengers"; import telegramMessenger from "@cloudflare/think/messengers/telegram"; export { ThinkMessengerStateAgent }; export class SupportAgent extends Think { getMessengers() { return defineMessengers({ telegram: telegramMessenger({ token: this.env.TELEGRAM_BOT_TOKEN, userName: "support_bot", secretToken: this.env.TELEGRAM_WEBHOOK_SECRET_TOKEN, }), }); } }