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Changelog

Track new product features, technical updates, documentation updates, and SDK releases across PromptRails.

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New teams, product owners, and engineers evaluating the workflow

Notable changes to the PromptRails platform, SDKs, and documentation, in reverse-chronological order. Use Product changelog for user-facing workflow changes, and Technical changelog for SDKs, runtime infrastructure, model provider support, and open-source engine updates.

June 2026

  • New — Knowledge Sources. Add document-RAG data sources for PDFs, pasted Markdown/text, and GitHub Markdown/MDX repositories. Attach them to agents, preview retrieval before use, and inspect knowledge_search calls in traces. See Knowledge Sources.
  • Improved — Apps. App builder data binding is more guided for tables and charts, with cleaner query pickers, faster data-source connection, expanded chart workflows, presentation mode polish, frozen-data behavior for customer-facing demos, and PDF/PPTX export controls for polished client deliverables. See Apps.

May 2026

  • New — Data Masking. Detect and mask PII in outbound LLM calls, inputs, and traces, with per-entity controls. See Data Masking.
  • Improved — Agent Triggers (formerly Webhook Triggers) now cover six sources: generic webhook, Slack, Telegram, Microsoft Teams, WhatsApp, and schedule. See Agent Triggers.
  • New — Virtual Filesystem.A per-agent filesystem for reading and writing files across an agent's runs. See Virtual Filesystem.
  • New — Evaluations. A quality-operations cockpit: eval sets, eval runs, LLM-as-judge scoring, and quality gates. See Evaluations.
  • New — Apps canvas. Rebuilt the app builder on a Retool-style canvas — toolbox, free-placement grid, inspector, data queries, app version history, record storage, and AI-assisted widget creation. See Apps.
  • New — Global Assistant panel and UI MCP. A workspace information-architecture refresh that puts the PromptRails Assistant in a panel available across the workspace, backed by a UI MCP surface.

April 2026

  • New — PromptRails Assistant. A built-in, AI-powered assistant for managing your workspace — creating and editing agents, prompts, and resources through natural language.
  • New — Gateway service. An OpenAI-compatible gateway for LLM model reselling.
  • New — Bulk model management. Export, import, and table-edit LLM models in bulk. See Prompts.

March 2026

  • New — Workspace Studio. Multi-tab editing for agents, prompts, runs, and traces, with MCP templates. See Agents and Prompts.
  • New — Media generation. Image, speech, and video generation across multiple providers, with asset storage. See Assets and Media.
  • New — Agent UI dashboards. The first multi-page dashboard builder for deploying agent-facing UIs.

February 2026

  • PromptRails goes live. Public launch of the PromptRails platform — agent orchestration, prompt management, and LLM gateway in one place. See the Quickstart to get started.
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