voltagent Releases

Updates A2A agent card discovery endpoints to point to the JSON-RPC path `/a2a/{serverId}` instead of internal discovery documents.

Apr 11, 2026

Updates A2A agent card discovery endpoints to point to the JSON-RPC path `/a2a/{serverId}` instead of internal discovery documents.

Apr 11, 2026

Adds a new `prepareStep` option to AgentOptions to allow setting default step preparation callbacks at the agent level.

Apr 8, 2026

Fixes a security bypass that allowed console access in development mode for WebSocket paths.

Apr 8, 2026

Fixes cleanup timing in serverless environments to prevent crashes when executing long-running tools.

Apr 8, 2026

Adds message metadata persistence and fixes the OpenAI-compatible adapter for the MiniMax provider.

Apr 1, 2026

Adds support for persisting assistant message metadata like usage and finish reason to memory.

Apr 1, 2026

Improves accuracy of prompt context usage telemetry by refining how tokens and metadata are estimated.

Mar 25, 2026

Added support for ACTIVITY_SNAPSHOT and ACTIVITY_DELTA events to the UI library, enhancing activity tracking capabilities.

Mar 25, 2026

Enhanced observability by adding estimated prompt context telemetry and exposing cached and reasoning token usage details on LLM spans.

Mar 21, 2026

Improved observability for LLM judge costs and fixed metadata preservation on structured output failures.

Mar 20, 2026

Published updated Hono server workflow route definitions, including OpenAPI specs and the latest route surface.

Mar 18, 2026

Fixed a bug in message conversion where tool-call parts used the incorrect property name, causing Anthropic API rejections.

Mar 16, 2026

Captured provider-reported OpenRouter costs in observability spans to improve cost tracking and accounting.

Mar 16, 2026

Improved error handling for structured output generation when models fail to produce a final output after tool-calling.

Mar 10, 2026

Added a read-only mode for memory operations to allow reading context without modifying memory state.

Mar 6, 2026

Introduced a new runtime memory envelope (options.memory) for per-call memory configuration while deprecating legacy top-level fields.

Mar 6, 2026

Added runtime memory envelope support and deprecated legacy top-level memory fields for resumable streams.

Mar 6, 2026

Patch fix that enables offline experiment runs to persist when using inline datasets with non-UUID item IDs. The VoltOpsRunManager now allows run creation even when dataset.versionId is missing, fixing API failures with string IDs like 'item-1'.

Feb 25, 2026

Patch fix that preserves getter-based fullStream tee behavior after startup probing in streamText/streamObject, preventing TypeError when SDK consumers iterate result.fullStream while other result accessors are also consuming the stream.

Feb 23, 2026