fix(eve): workflow attributes - seed tags at run creation

[AndrewBarba]

Summary

• seed session, subagent, and turn attributes atomically when their Workflow runs are created
• remove initial attribute writes from first-step bodies
• share attribute normalization between start-time seeds and later step-side updates

Root cause

Workflow turbo mode starts the first step body before the backgrounded run_started barrier settles. eve wrote lineage attributes at the beginning of that body, so the Vercel world could receive the attribute event before the run existed and return Workflow run ... not found.

Start-time attributes are part of run_created and are explicitly preserved by turbo's synthesized run state, avoiding the race without disabling turbo.

Impact

New session, subagent, and turn runs retain their $eve.* dashboard attributes without emitting the warn-once setEveAttributes error. Later model and token usage updates remain step-side.

Validation

• pnpm lint
• pnpm fmt
• pnpm guard:invariants
• pnpm typecheck
• pnpm build
• pnpm test:unit (4,010 assertions passed; one skipped)
• pnpm test:integration (371 passed)
• targeted scenario rerun: app-runtime-dependencies.scenario.test.ts (9 passed)
• full scenario suite reached 260 passed / 15 skipped; two build-fixture tests raced temporary dist rebuilds and both passed in the isolated rerun

[vercel]

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Project	Deployment	Actions	Updated (UTC)
eve-docs	Ready	Preview, Comment, Open in v0	Jun 25, 2026 4:53am

[github-actions]

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

Key takeaways

• No notable deltas vs main (6283eb5).

Delta vs main (6283eb5)

Area	Metric	Baseline	Current	Delta
Package	Packed tarball	3.39 MB	3.38 MB	-498 B ✅
Package	Unpacked publish size	12.27 MB	12.27 MB	-1.4 kB ✅
Package	Installed footprint	52.12 MB	52.12 MB	-1.4 kB ✅
Package	Published files	2301	2303	+2
Package	Installed files	5506	5508	+2
Runtime	Unique function payloads	2	2	0
Runtime	Total function bytes	9.61 MB	9.61 MB	+2.9 kB ⚠️
Runtime	Public routes	9	9	0

Changed function payloads vs main (6283eb5) (2)

Function	Status	Baseline	Current	Delta	Route changes
functions/__server.func	changed	3.98 MB	3.98 MB	+2.9 kB ⚠️	none
functions/.well-known/workflow/v1/flow.func	changed	5.63 MB	5.63 MB	+1 B ⚠️	none

Build Metadata

• Preset: vercel
• Nitro: nitro@3.0.260610-beta
• Output directory: apps/fixtures/weather-agent/.vercel/output
• Build metadata timestamp: 2026-06-25T04:53:59.553Z
• 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@0.13.7
• Package directory: packages/eve
• Tarball: 3.38 MB (eve-0.13.7.tgz)
• Unpacked payload: 12.27 MB across 2303 published files
• Installed footprint: 52.12 MB across 5508 installed files
• Installed root package: 10.99 MB
• Installed dependencies: 41.13 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: 20.26 MB (38.9%)
• eve: 10.99 MB (21.1%)
• ai: 6.20 MB (11.9%)
• zod: 5.04 MB (9.7%)
• nitro: 2.41 MB (4.6%)

Publish payload breakdown

Published file size
🟠 dist/src/compiled/experimental-ai-sdk-code-mo... [####....................] 1.51 MB 12.3%
🟡 dist/src/compiled/@workflow/core/runtime.js      [##......................] 788.4 kB 6.4%
🟡 dist/src/compiled/@vercel/sandbox/index.js       [##......................] 632.0 kB 5.2%
🟡 dist/src/compiled/@chat-adapter/slack/index.js   [#.......................] 438.4 kB 3.6%
🟡 dist/src/compiled/_chunks/workflow/attribute-... [#.......................] 371.6 kB 3.0%
🔴 Other published files                            [########################] 8.53 MB 69.5%

Installed footprint breakdown

Installed package size
🔴 @rolldown/binding-linux-x64-gnu [########################] 20.26 MB 38.9%
🔴 eve                             [#############...........] 10.99 MB 21.1%
🔴 ai                              [#######.................] 6.20 MB 11.9%
🔴 zod                             [######..................] 5.04 MB 9.7%
🟠 nitro                           [###.....................] 2.41 MB 4.6%
🟡 rolldown                        [#.......................] 771.7 kB 1.5%
🔴 Other installed packages        [########................] 6.46 MB 12.4%

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     [########################] 5.63 MB 58.6%
🔴 functions/__server.func                         [#################.......] 3.98 MB 41.4%

Top Function Payloads

🟠 functions/.well-known/workflow/v1/flow.func • 1 public route • 5.63 MB

Metric	Value
Public routes	/.well-known/workflow/v1/flow
Runtime	nodejs24.x
Handler	index.mjs
Payload	5.63 MB
Function files	5.63 MB across 26 files
Traced dependencies	0 B
Signal	🟠 Bundled file __eve_nitro_handler__.mjs is 1.87 MB (33.2%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 __eve_nitro_handler__.mjs              [########################] 1.87 MB 33.2%
🟠 _chunks/runtime.mjs                    [#############...........] 975.4 kB 17.3%
🟡 _chunks/sandbox.mjs                    [##########..............] 766.0 kB 13.6%
🟡 _chunks/attribute-changes-DUxG-Gic.mjs [######..................] 473.2 kB 8.4%
🟡 _libs/@ai-sdk/gateway+[...].mjs        [#####...................] 409.9 kB 7.3%
🟠 Other bundled files                    [###############.........] 1.13 MB 20.1%

🧾 Vercel Config

{
  "handler": "index.mjs",
  "launcherType": "Nodejs",
  "shouldAddHelpers": false,
  "supportsResponseStreaming": true,
  "runtime": "nodejs24.x",
  "environment": {
    "NODE_OPTIONS": "--experimental-require-module"
  },
  "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 • 3.98 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	3.98 MB
Function files	3.98 MB across 21 files
Traced dependencies	0 B
Signal	🟠 Bundled file index.mjs is 1.51 MB (37.9%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 index.mjs                              [########################] 1.51 MB 37.9%
🟠 _chunks/runtime.mjs                    [##############..........] 883.8 kB 22.2%
🟠 _chunks/sandbox.mjs                    [############............] 766.0 kB 19.3%
🟡 _chunks/attribute-changes-DUxG-Gic.mjs [#######.................] 448.9 kB 11.3%
⚪ _libs/zod.mjs                          [##......................] 114.2 kB 2.9%
🟡 Other bundled files                    [####....................] 258.8 kB 6.5%

🧾 Vercel Config

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