feat(eve): support structured output in cross-channel receive

[marcoshernanz]

Description

Adds turn-scoped structured output to cross-channel receive(...) calls.

• Lets route handlers and schedules pass outputSchema alongside message, target, and auth.
• Accepts Standard JSON Schema or raw JSON Schema and normalizes it before the durable runtime boundary.
• Applies the caller schema through the framework-provided target send without changing ReceiveInput or channel-specific targets.
• Keeps run mode, durability, continuation tokens, auth, and the existing result.completed lifecycle unchanged.
• Clears schemas retained by failed turns from later fresh deliveries while preserving runtime, pending HITL, and other internal continuations.

Closes #224.

How did you test your changes?

• pnpm test:unit — 386 files and 3,902 tests passed
• pnpm test:integration — 45 files and 368 tests passed
• pnpm test:scenario — 42 files and 261 tests passed; 15 platform-specific tests skipped
• NODE_ENV=test pnpm --filter agent-channels test:e2e — 2 evals and 5 gates passed
• pnpm typecheck
• pnpm lint
• pnpm fmt
• pnpm build
• pnpm docs:check
• pnpm guard:invariants
• pnpm guard:fixtures
• pnpm check:deps
• pnpm changeset status

The local model-driven TUI smoke cases require AI Gateway credentials that are unavailable in this environment. Their credential-free cases passed; the hosted CI TUI job covers the complete suite.

PR Checklist

• I linked an issue with prior discussion confirming this change is wanted
• I ran the relevant checks from CONTRIBUTING.md
• I added tests and documentation where relevant
• I added a changeset because this touches the published eve package
• DCO sign-off passes for every commit (git commit --signoff)

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
eve-docs	Ready	Preview, Comment, Open in v0	Jun 23, 2026 11:39pm

[github-actions]

Bundle + Package Summary: apps/fixtures/weather-agent

Key takeaways

• No notable deltas vs main (d602309).

Delta vs main (d602309)

Area	Metric	Baseline	Current	Delta
Package	Packed tarball	3.39 MB	3.39 MB	-2 B ✅
Package	Unpacked publish size	12.35 MB	12.35 MB	+3.3 kB ⚠️
Package	Installed footprint	52.56 MB	52.56 MB	+3.3 kB ⚠️
Package	Published files	2280	2280	0
Package	Installed files	5485	5485	0
Runtime	Unique function payloads	2	2	0
Runtime	Total function bytes	9.35 MB	9.35 MB	+623 B ⚠️
Runtime	Public routes	9	9	0

Changed function payloads vs main (d602309) (2)

Function	Status	Baseline	Current	Delta	Route changes
functions/__server.func	changed	3.87 MB	3.87 MB	+487 B ⚠️	none
functions/.well-known/workflow/v1/flow.func	changed	5.48 MB	5.48 MB	+136 B ⚠️	none

Build Metadata

• Preset: vercel
• Nitro: nitro@3.0.260610-beta
• Output directory: apps/fixtures/weather-agent/.vercel/output
• Build metadata timestamp: 2026-06-23T23:39:22.199Z
• Route aliases: 9 public, 1 internal (10 total aliases)
• Vercel routes in config: 10
• Severity legend: 🔴 dominant/large, 🟠 notable, 🟡 watch, ⚪ small

Package Drill-Down

Package Details

• Package: eve@0.13.3
• Package directory: packages/eve
• Tarball: 3.39 MB (eve-0.13.3.tgz)
• Unpacked payload: 12.35 MB across 2280 published files
• Installed footprint: 52.56 MB across 5485 installed files
• Installed root package: 11.08 MB
• Installed dependencies: 41.48 MB
• Runtime dependencies: 1
• Peer dependencies: 12 (11 optional)

Installed footprint is measured from an isolated temporary npm install of the packed tarball.

Heavy installed dependencies

• @rolldown/binding-linux-x64-gnu: 20.61 MB (39.2%)
• eve: 11.08 MB (21.1%)
• ai: 6.20 MB (11.8%)
• zod: 5.04 MB (9.6%)
• nitro: 2.41 MB (4.6%)

Publish payload breakdown

Published file size
🟠 dist/src/compiled/experimental-ai-sdk-code-mo... [####....................] 1.51 MB 12.2%
🟡 dist/src/compiled/@workflow/core/runtime.js      [##......................] 775.4 kB 6.3%
🟡 dist/src/compiled/@vercel/sandbox/index.js       [##......................] 632.0 kB 5.1%
🟡 dist/src/compiled/@chat-adapter/slack/index.js   [#.......................] 438.4 kB 3.5%
🟡 dist/src/compiled/_chunks/workflow/attribute-... [#.......................] 370.9 kB 3.0%
🔴 Other published files                            [########################] 8.63 MB 69.9%

Installed footprint breakdown

Installed package size
🔴 @rolldown/binding-linux-x64-gnu [########################] 20.61 MB 39.2%
🔴 eve                             [#############...........] 11.08 MB 21.1%
🔴 ai                              [#######.................] 6.20 MB 11.8%
🔴 zod                             [######..................] 5.04 MB 9.6%
🟠 nitro                           [###.....................] 2.41 MB 4.6%
🟡 rolldown                        [#.......................] 771.0 kB 1.5%
🔴 Other installed packages        [########................] 6.46 MB 12.3%

Runtime dependencies (1)

Package	Range	Notes
nitro	3.0.260610-beta

Peer dependencies (12)

Package	Range	Notes
@opentelemetry/api	^1.0.0	optional peer
@sveltejs/kit	^2.0.0	optional peer
ai	catalog:
braintrust	^3.0.0	optional peer
just-bash	^3.0.0	optional peer
microsandbox	^0.5.0	optional peer
next	^16.0.0	optional peer
nuxt	^4.0.0	optional peer
react	^19.0.0	optional peer
svelte	^5.0.0	optional peer
vite	^8.0.0	optional peer
vue	^3.5.0	optional peer

Function Drill-Down

Payload Size Graph

Unique function payload size and share of total
🔴 functions/.well-known/workflow/v1/flow.func     [########################] 5.48 MB 58.6%
🔴 functions/__server.func                         [#################.......] 3.87 MB 41.4%

Top Function Payloads

🟠 functions/.well-known/workflow/v1/flow.func • 1 public route • 5.48 MB

Metric	Value
Public routes	/.well-known/workflow/v1/flow
Runtime	nodejs24.x
Handler	index.mjs
Payload	5.48 MB
Function files	5.48 MB across 27 files
Traced dependencies	0 B
Signal	🟠 Bundled file __eve_nitro_handler__.mjs is 1.51 MB (27.6%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 __eve_nitro_handler__.mjs              [########################] 1.51 MB 27.6%
🟠 _chunks/runtime.mjs                    [###############.........] 958.4 kB 17.5%
🟡 _chunks/sandbox.mjs                    [############............] 766.0 kB 14.0%
🟡 _chunks/attribute-changes-Bi5DLT8S.mjs [########................] 472.2 kB 8.6%
🟡 _chunks/dist-DTchiX0N.mjs              [#######.................] 460.6 kB 8.4%
🟠 Other bundled files                    [#####################...] 1.31 MB 24.0%

🧾 Vercel Config

{
  "handler": "index.mjs",
  "launcherType": "Nodejs",
  "shouldAddHelpers": false,
  "supportsResponseStreaming": true,
  "runtime": "nodejs24.x",
  "environment": {
    "NODE_OPTIONS": "--experimental-require-module",
    "WORKFLOW_QUEUE_NAMESPACE": "eve"
  },
  "maxDuration": "max",
  "experimentalTriggers": [
    {
      "type": "queue/v2beta",
      "topic": "__eve_wkf_workflow_*",
      "consumer": "default",
      "retryAfterSeconds": 5,
      "initialDelaySeconds": 0
    }
  ]
}

---

🟠 functions/__server.func • 8 public routes, 1 internal alias • 3.87 MB

Metric	Value
Public routes	/ /eve/v1/callback/[token] /eve/v1/connections/[name]/callback/[token] /eve/v1/health /eve/v1/info /eve/v1/session /eve/v1/session/[sessionId] /eve/v1/session/[sessionId]/stream
Internal aliases	/__server
Runtime	nodejs24.x
Handler	index.mjs
Payload	3.87 MB
Function files	3.87 MB across 21 files
Traced dependencies	0 B
Signal	🟠 Bundled file index.mjs is 1.40 MB (36.3%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 index.mjs                              [########################] 1.40 MB 36.3%
🟠 _chunks/runtime.mjs                    [###############.........] 875.8 kB 22.6%
🟠 _chunks/sandbox.mjs                    [#############...........] 766.0 kB 19.8%
🟡 _chunks/attribute-changes-Bi5DLT8S.mjs [########................] 448.5 kB 11.6%
⚪ _libs/zod.mjs                          [##......................] 114.2 kB 3.0%
🟡 Other bundled files                    [####....................] 258.8 kB 6.7%

🧾 Vercel Config

{
  "handler": "index.mjs",
  "launcherType": "Nodejs",
  "shouldAddHelpers": false,
  "supportsResponseStreaming": true,
  "runtime": "nodejs24.x"
}