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  • v4.5.0-rc.7 015106d7fa
    比较

    chore: release v4.5.0-rc.7 (#3932)

    frostbyte_neo 发布于 2026-06-17 12:14:38 +00:00 | 653 次提交 在此版本后已推送到 main

    Summary

    7 improvements.

    Improvements

    • @trigger.dev/sdk now bundles the Trigger.dev agent skills and a
      curated snapshot of the docs those skills reference. The skills that
      trigger skills installs into your coding agent read this content from
      node_modules, so the guidance your AI assistant follows is pinned to the
      SDK version installed in your project and stays current across upgrades
      instead of going stale until the next reinstall.
      (#3937)

    • Running a CLI command like dev, deploy, preview, or update
      before initializing a project no longer crashes with a raw Cannot find matching package.json stack trace. The CLI now detects the missing
      project and points you to npx trigger.dev@latest init instead.
      (#3929)

    • The agent skills installed by trigger skills are now namespaced with
      a trigger- prefix (e.g. trigger-authoring-tasks,
      trigger-getting-started) so they don't collide with unrelated skills
      in your coding agent's skills directory. Adds a trigger-cost-savings
      skill for auditing and reducing compute spend (right-sizing machines,
      maxDuration, batching, debounce), and @trigger.dev/sdk now bundles
      the full Trigger.dev documentation so your agent can read the complete,
      version-pinned reference directly from node_modules.
      (#3970)

    • The run span API response now includes cachedCost and
      cacheCreationCost on the ai object, alongside the existing
      inputCost / outputCost / totalCost. inputCost reflects only the
      non-cached input, so these fields let you reconstruct the full cost
      breakdown for prompt-cached calls.
      (#3958)

    • chat.headStart now works with the chat.customAgent and
      chat.createSession backends, not only chat.agent. The warm step-1
      response hands over to your loop the same way it does for a managed
      agent. (#3963)

      In a chat.customAgent loop, consume the handover on turn 0:

      const conversation = new chat.MessageAccumulator();

    const { isFinal, skipped } = await conversation.consumeHandover({
    payload });
    if (skipped) return; // warm handler aborted, so exit without a turn
    if (isFinal) {
    await chat.writeTurnComplete(); // step 1 is the response, no streamText
    } else {
    const result = streamText({ model, messages: conversation.modelMessages,
    tools });
    // Pass originalMessages so the handed-over tool round merges into the
    // step-1 assistant instead of starting a new message.
    const response = await chat.pipeAndCapture(result, {
    originalMessages: conversation.uiMessages,
    });
    if (response) await conversation.addResponse(response);
    }

    
With `chat.createSession`, the iterator surfaces it as `turn.handover`;
call `turn.complete()` with no argument on a final handover. The
lower-level `chat.waitForHandover()` and `accumulator.applyHandover()`
are also exported for hand-rolled loops.
- Cache your chat agent's system prompt with Anthropic prompt caching.
`chat.toStreamTextOptions()` now emits the system prompt as a cacheable
message when you opt in, so a large, stable system block is billed at
cache-read rates on every turn instead of full price.
([#3952](https://github.com/triggerdotdev/trigger.dev/pull/3952))

```ts
// at the streamText call site (Anthropic sugar)
streamText({
...chat.toStreamTextOptions({ cacheControl: { type: "ephemeral" } }),
  messages,
});

// provider-agnostic equivalent
chat.toStreamTextOptions({
systemProviderOptions: { anthropic: { cacheControl: { type: "ephemeral"
} } },
});

// or where the prompt is defined
chat.prompt.set(SYSTEM_PROMPT, {
providerOptions: { anthropic: { cacheControl: { type: "ephemeral" } } },
});

    Without an option, system stays a plain string. Pairs with a
    prepareMessages cache breakpoint to cache the conversation prefix
    across turns too.

    • Three fixes for custom agent loops (chat.customAgent,
      chat.createSession, and hand-rolled MessageAccumulator loops):
      (#3936)

    • Continuation runs no longer replay already-answered user messages into
      the first turn. The .in resume cursor is now seeded before any
      listener attaches (the same boot logic chat.agent uses), so a chat
      that continues after a cancel, crash, or upgrade only sees genuinely new
      messages.

    • Steering a hand-rolled loop mid-stream no longer wipes the in-flight
      assistant response. chat.pipeAndCapture now stamps a server-generated
      message id on the stream, so a prepareStep injection keeps the partial
      text instead of replacing the message.

    • Task-backed tools (ai.toolExecute) now work from custom agent loops:
      the parent's session is threaded to the child run, so child tasks can
      stream progress into the chat with chat.stream.writer({ target: "root" }) instead of failing with "session handle is not initialized".

    Raw changeset output

    ⚠️⚠️⚠️⚠️⚠️⚠️

    main is currently in pre mode so this branch has prereleases
    rather than normal releases. If you want to exit prereleases, run
    changeset pre exit on main.

    ⚠️⚠️⚠️⚠️⚠️⚠️

    Releases

    @trigger.dev/build@4.5.0-rc.7

    Patch Changes

    • Updated dependencies:
      • @trigger.dev/core@4.5.0-rc.7

    trigger.dev@4.5.0-rc.7

    Patch Changes

    • @trigger.dev/sdk now bundles the Trigger.dev agent skills and a
      curated snapshot of the docs those skills reference. The skills that
      trigger skills installs into your coding agent read this content from
      node_modules, so the guidance your AI assistant follows is pinned to the
      SDK version installed in your project and stays current across upgrades
      instead of going stale until the next reinstall.
      (#3937)
    • Running a CLI command like dev, deploy, preview, or update
      before initializing a project no longer crashes with a raw Cannot find matching package.json stack trace. The CLI now detects the missing
      project and points you to npx trigger.dev@latest init instead.
      (#3929)
    • The agent skills installed by trigger skills are now namespaced with
      a trigger- prefix (e.g. trigger-authoring-tasks,
      trigger-getting-started) so they don't collide with unrelated skills
      in your coding agent's skills directory. Adds a trigger-cost-savings
      skill for auditing and reducing compute spend (right-sizing machines,
      maxDuration, batching, debounce), and @trigger.dev/sdk now bundles
      the full Trigger.dev documentation so your agent can read the complete,
      version-pinned reference directly from node_modules.
      (#3970)
    • Updated dependencies:
      • @trigger.dev/core@4.5.0-rc.7
      • @trigger.dev/build@4.5.0-rc.7
      • @trigger.dev/schema-to-json@4.5.0-rc.7

    @trigger.dev/core@4.5.0-rc.7

    Patch Changes

    • The run span API response now includes cachedCost and
      cacheCreationCost on the ai object, alongside the existing
      inputCost / outputCost / totalCost. inputCost reflects only the
      non-cached input, so these fields let you reconstruct the full cost
      breakdown for prompt-cached calls.
      (#3958)

    @trigger.dev/python@4.5.0-rc.7

    Patch Changes

    • Updated dependencies:
      • @trigger.dev/sdk@4.5.0-rc.7
      • @trigger.dev/core@4.5.0-rc.7
      • @trigger.dev/build@4.5.0-rc.7

    @trigger.dev/react-hooks@4.5.0-rc.7

    Patch Changes

    • Updated dependencies:
      • @trigger.dev/core@4.5.0-rc.7

    @trigger.dev/redis-worker@4.5.0-rc.7

    Patch Changes

    • Updated dependencies:
      • @trigger.dev/core@4.5.0-rc.7

    @trigger.dev/rsc@4.5.0-rc.7

    Patch Changes

    • Updated dependencies:
      • @trigger.dev/core@4.5.0-rc.7

    @trigger.dev/schema-to-json@4.5.0-rc.7

    Patch Changes

    • Updated dependencies:
      • @trigger.dev/core@4.5.0-rc.7

    @trigger.dev/sdk@4.5.0-rc.7

    Patch Changes

    • @trigger.dev/sdk now bundles the Trigger.dev agent skills and a
      curated snapshot of the docs those skills reference. The skills that
      trigger skills installs into your coding agent read this content from
      node_modules, so the guidance your AI assistant follows is pinned to the
      SDK version installed in your project and stays current across upgrades
      instead of going stale until the next reinstall.
      (#3937)

    • chat.headStart now works with the chat.customAgent and
      chat.createSession backends, not only chat.agent. The warm step-1
      response hands over to your loop the same way it does for a managed
      agent. (#3963)

      In a chat.customAgent loop, consume the handover on turn 0:

      const conversation = new chat.MessageAccumulator();

    const { isFinal, skipped } = await conversation.consumeHandover({
    payload });
    if (skipped) return; // warm handler aborted, so exit without a turn
    if (isFinal) {
    await chat.writeTurnComplete(); // step 1 is the response, no streamText
    } else {
    const result = streamText({ model, messages: conversation.modelMessages,
    tools });
    // Pass originalMessages so the handed-over tool round merges into the
    // step-1 assistant instead of starting a new message.
    const response = await chat.pipeAndCapture(result, {
    originalMessages: conversation.uiMessages,
    });
    if (response) await conversation.addResponse(response);
    }
    ```

    With chat.createSession, the iterator surfaces it as turn.handover;
    call turn.complete() with no argument on a final handover. The
    lower-level chat.waitForHandover() and accumulator.applyHandover()
    are also exported for hand-rolled loops.

    • Add triggerConfig support to chat.headStart() and
      chat.openSession(), so the auto-triggered handover-prepare run
      inherits tags, queue, machine, and other session trigger options the
      same way chat.createStartSessionAction() does. The chat:{chatId} tag
      is prepended automatically.
      (#3963)

      export const POST = chat.headStart({
  agentId: "my-agent",
  triggerConfig: { tags: ["org:acme"], queue: "chat" },

    run: async ({ chat }) => streamText({ ...chat.toStreamTextOptions(),
    model }),
    });
    ```

    Because the session is created once on the first head-start turn and is
    idempotent on the chat id, this is the only place to set those options
    for a head-start chat's lifetime. chat.createStartSessionAction() now
    also forwards maxDuration, region, and lockToVersion so both
    session entry points stay consistent.

    • Cache your chat agent's system prompt with Anthropic prompt caching.
      chat.toStreamTextOptions() now emits the system prompt as a cacheable
      message when you opt in, so a large, stable system block is billed at
      cache-read rates on every turn instead of full price.
      (#3952)

      // at the streamText call site (Anthropic sugar)
streamText({

    ...chat.toStreamTextOptions({ cacheControl: { type: "ephemeral" } }),
    messages,
    });

    // provider-agnostic equivalent
chat.toStreamTextOptions({

    systemProviderOptions: { anthropic: { cacheControl: { type: "ephemeral"
    } } },
    });

    // or where the prompt is defined
chat.prompt.set(SYSTEM_PROMPT, {

    providerOptions: { anthropic: { cacheControl: { type: "ephemeral" } } },
    });
    ```

    Without an option, system stays a plain string. Pairs with a
    prepareMessages cache breakpoint to cache the conversation prefix
    across turns too.

    • Three fixes for custom agent loops (chat.customAgent,
      chat.createSession, and hand-rolled MessageAccumulator loops):
      (#3936)

    • Continuation runs no longer replay already-answered user messages into
      the first turn. The .in resume cursor is now seeded before any
      listener attaches (the same boot logic chat.agent uses), so a chat
      that continues after a cancel, crash, or upgrade only sees genuinely new
      messages.

    • Steering a hand-rolled loop mid-stream no longer wipes the in-flight
      assistant response. chat.pipeAndCapture now stamps a server-generated
      message id on the stream, so a prepareStep injection keeps the partial
      text instead of replacing the message.

    • Task-backed tools (ai.toolExecute) now work from custom agent loops:
      the parent's session is threaded to the child run, so child tasks can
      stream progress into the chat with chat.stream.writer({ target: "root" }) instead of failing with "session handle is not initialized".

    • The agent skills installed by trigger skills are now namespaced with
      a trigger- prefix (e.g. trigger-authoring-tasks,
      trigger-getting-started) so they don't collide with unrelated skills
      in your coding agent's skills directory. Adds a trigger-cost-savings
      skill for auditing and reducing compute spend (right-sizing machines,
      maxDuration, batching, debounce), and @trigger.dev/sdk now bundles
      the full Trigger.dev documentation so your agent can read the complete,
      version-pinned reference directly from node_modules.
      (#3970)

    • Updated dependencies:

      • @trigger.dev/core@4.5.0-rc.7

    @trigger.dev/plugins@4.5.0-rc.7

    Patch Changes

    • Updated dependencies:
      • @trigger.dev/core@4.5.0-rc.7

    Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

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