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Prevent world-local timeouts from replaying active turns - #2427

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Prevent world-local timeouts from replaying active turns#2427
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@vercel-gh-bot-5 vercel-gh-bot-5 Bot commented Aug 22, 2026

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Summary

Local turn deliveries inherit world-local's 30-second header and body deadlines. A model call can outlive that window, so world-local retries the same queue message while the original request remains active. Workflow then recovers the unfinished inline turn step and can repeat the provider call and its billing.

This proposal defaults WORKFLOW_LOCAL_HEADERS_TIMEOUT_MS and WORKFLOW_LOCAL_BODY_TIMEOUT_MS to 0 before eve constructs a live local-world queue. It covers both the parent-owned development world and the generated self-hosted production world. world-local defines 0 as unbounded. The hypothesis is that waiting for the active delivery to finish removes the transport retry, so a long turn executes once. Explicit non-empty overrides still take precedence, while custom and Vercel worlds remain unchanged.

A genuinely stuck local delivery now remains in flight until the local server exits. This is safer than automatically duplicating provider or tool side effects.

This addresses the timeout-driven path in #2425. It intentionally leaves full-process recovery unchanged. A restarted process still respects Workflow's inline-owner lease, since bypassing that lease can duplicate an execution whose previous owner is still alive.

Validation

  • Manual 31-second delivery repro: main delivered the same message twice after a transport timeout; this branch delivered it once with no transport error.
  • Focused timeout-helper and generated-world tests: 7 passed
  • Focused development-world integration tests: 10 passed
  • pnpm --filter eve typecheck
  • pnpm --filter eve build
  • pnpm fmt
  • pnpm lint (no errors; one unrelated existing warning)
  • pnpm guard:invariants
  • pnpm changeset status

Checklist

  • This change was requested or approved by a maintainer
  • 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

Requested by: os0xi

@vercel

vercel Bot commented Aug 22, 2026

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@github-actions

github-actions Bot commented Aug 22, 2026

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

Key takeaways

  • No notable deltas vs main (0fe6298).

Delta vs main (0fe6298)

Area Metric Baseline Current Delta
Package Packed tarball 8.19 MB 8.19 MB +466 B ⚠️
Package Unpacked publish size 30.83 MB 30.83 MB +1.2 kB ⚠️
Package Installed footprint 75.02 MB 75.02 MB +1.2 kB ⚠️
Package Published files 3410 3412 +2
Package Installed files 7124 7126 +2
Package Installed package instances 35 35 0
Package Distinct installed package names 34 34 0
Package Installed dependency edges 53 53 0
Package Installed optional peer edges 47 47 0
Runtime Unique function payloads 2 2 0
Runtime Total function bytes 18.22 MB 18.22 MB -40 B ✅
Runtime Public routes 16 16 0
Changed function payloads vs main (0fe6298) (2)
Function Status Baseline Current Delta Route changes
functions/__server.func changed 9.11 MB 9.11 MB -20 B ✅ none
functions/.well-known/workflow/v1/flow.func changed 9.11 MB 9.11 MB -20 B ✅ none

eve init install

Metric Baseline Current Delta
Installed footprint 113.43 MB 113.43 MB +1.2 kB ⚠️
Installed packages 121 121 0
dependencies 4 4 0
devDependencies 2 2 0
Dependency package bytes 45.39 MB 45.39 MB +1.2 kB ⚠️
devDependency package bytes 5.04 MB 5.04 MB 0 B ➖
Build Metadata
  • Preset: vercel
  • Nitro: nitro@3.0.260610-beta
  • Output directory: apps/fixtures/weather-agent/.vercel/output
  • Build metadata timestamp: 2026-08-22T20:21:57.217Z
  • Route aliases: 16 public, 1 internal (17 total aliases)
  • Vercel routes in config: 19
  • Severity legend: 🔴 dominant/large, 🟠 notable, 🟡 watch, ⚪ small
Package Drill-Down

Package Details

  • Package: eve@0.44.1
  • Package directory: packages/eve
  • Tarball: 8.19 MB (eve-0.44.1.tgz)
  • Unpacked payload: 30.83 MB across 3412 published files
  • Installed footprint: 75.02 MB across 7126 installed files
  • Installed root package: 29.47 MB
  • Installed dependencies: 45.55 MB
  • Installed package instances: 35
  • Distinct installed package names: 34
  • Installed dependency edges: 53
  • Installed optional peer edges: 47
  • Runtime dependencies: 2
  • Peer dependencies: 5 (4 optional)

Installed footprint is measured from an isolated temporary npm install of the packed tarball.
Graph metrics read only package.json files in package directories directly beneath a node_modules boundary, including nested boundaries. Each directory is one package instance; distinct names come from those manifests. Dependency edges count each unique name in dependencies or optionalDependencies per instance; optional peer edges count peerDependencies marked optional.

Heavy installed dependencies

  • eve: 29.47 MB (39.3%)
  • @rolldown/binding-linux-x64-gnu: 19.91 MB (26.5%)
  • ai: 6.75 MB (9.0%)
  • zod: 5.07 MB (6.8%)
  • undici: 3.50 MB (4.7%)
Publish payload breakdown
Published file size
🔴 dist/src/compiled/shadcn-registry/index.js       [###############.........] 9.76 MB 31.7%
🟠 dist/src/compiled/@photon-ai/chat-adapter-ime... [####....................] 2.44 MB 7.9%
🟠 dist/src/compiled/experimental-ai-sdk-code-mo... [##......................] 1.51 MB 4.9%
🟡 dist/src/compiled/_chunks/workflow/undici-Dzn... [#.......................] 512.7 kB 1.7%
🟡 dist/src/compiled/_chunks/node/undici-CUIybhQ... [#.......................] 508.8 kB 1.7%
🔴 Other published files                            [########################] 16.10 MB 52.2%
Installed footprint breakdown
Installed package size
🔴 eve                             [########################] 29.47 MB 39.3%
🔴 @rolldown/binding-linux-x64-gnu [################........] 19.91 MB 26.5%
🔴 ai                              [#####...................] 6.75 MB 9.0%
🔴 zod                             [####....................] 5.07 MB 6.8%
🟠 undici                          [###.....................] 3.50 MB 4.7%
🟠 nitro                           [##......................] 2.41 MB 3.2%
🔴 Other installed packages        [######..................] 7.90 MB 10.5%
Runtime dependencies (2)
Package Range Notes
nitro 3.0.260610-beta
undici 8.9.0
Peer dependencies (5)
Package Range Notes
@opentelemetry/api ^1.0.0 optional peer
ai catalog:
braintrust ^3.0.0 optional peer
just-bash ^3.0.0 optional peer
microsandbox ^0.5.0 optional peer
eve init install drill-down

eve init install details

  • Command: eve init my-agent
  • Package manager: npm
  • Installed footprint: 113.43 MB across 9002 installed files
  • Installed packages: 121 total (115 transitive-only)
  • dependencies: 4 direct packages totaling 45.39 MB
  • devDependencies: 2 direct packages totaling 5.04 MB
  • Other transitive package files: 63.00 MB

Installed footprint is measured from an isolated temporary eve init my-agent using the current packed eve tarball.

Heavy installed dependencies

  • eve: 29.47 MB (26.0%)
  • @typescript/typescript-linux-x64: 27.95 MB (24.6%)
  • @rolldown/binding-linux-x64-gnu: 19.91 MB (17.6%)
  • zod: 9.02 MB (8.0%)
  • ai: 6.75 MB (6.0%)
Installed footprint breakdown
Installed package size
🔴 eve                              [########################] 29.47 MB 26.0%
🔴 @typescript/typescript-linux-x64 [#######################.] 27.95 MB 24.6%
🔴 @rolldown/binding-linux-x64-gnu  [################........] 19.91 MB 17.6%
🔴 zod                              [#######.................] 9.02 MB 8.0%
🔴 ai                               [#####...................] 6.75 MB 6.0%
🟠 undici                           [###.....................] 3.50 MB 3.1%
🔴 Other installed packages         [##############..........] 16.82 MB 14.8%
dependencies (4)
Package Range Installed size Share
@vercel/connect 0.4.3 141.0 kB 0.1%
ai ^7.0.58 6.75 MB 6.0%
eve file:eve-0.44.1.tgz 29.47 MB 26.0%
zod 4.4.3 9.02 MB 8.0%
devDependencies (2)
Package Range Installed size Share
@types/node 24.x 2.54 MB 2.2%
typescript 7.0.2 2.50 MB 2.2%
Function Drill-Down

Payload Size Graph

Unique function payload size and share of total
🔴 functions/.well-known/workflow/v1/flow.func     [########################] 9.11 MB 50.0%
🔴 functions/__server.func                         [########################] 9.11 MB 50.0%

Top Function Payloads

🟠 functions/.well-known/workflow/v1/flow.func • 1 public route • 9.11 MB
Metric Value
Public routes /.well-known/workflow/v1/flow
Runtime nodejs24.x
Handler index.mjs
Payload 9.11 MB
Function files 9.11 MB across 50 files
Traced dependencies 0 B
Signal 🟠 Bundled file index.mjs is 2.07 MB (22.7%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 index.mjs                     [##################......] 2.07 MB 22.7%
🟠 _chunks/runtime-artifacts.mjs [###############.........] 1.80 MB 19.7%
🟡 _libs/undici.mjs              [########................] 980.5 kB 10.8%
🟡 _chunks/sandbox.mjs           [#######.................] 781.9 kB 8.6%
🟡 _chunks/frames-Dl2Hcma4.mjs   [######..................] 678.7 kB 7.5%
🟠 Other bundled files           [########################] 2.80 MB 30.7%

🧾 Vercel Config

{
  "handler": "index.mjs",
  "launcherType": "Nodejs",
  "shouldAddHelpers": false,
  "supportsResponseStreaming": true,
  "runtime": "nodejs24.x",
  "maxDuration": "max",
  "experimentalTriggers": [
    {
      "type": "queue/v2beta",
      "topic": "__eve776561746865722d6167656e74_wkf_workflow_*",
      "consumer": "default",
      "retryAfterSeconds": 5,
      "initialDelaySeconds": 0
    }
  ],
  "environment": {
    "WORKFLOW_PRECONDITION_GUARD": "1"
  }
}

🟠 functions/__server.func • 15 public routes, 1 internal alias • 9.11 MB
Metric Value
Public routes /
/eve/v1/callback/[token]
/eve/v1/connections/[name]/callback/[attemptId]/[token]
/eve/v1/connections/[name]/callback/[token]
/eve/v1/health
/eve/v1/info
/eve/v1/session
/eve/v1/session/[parentSessionId]/subagents/[callId]/[childSessionId]/stream
/eve/v1/session/[sessionId]
/eve/v1/session/[sessionId]/cancel
/eve/v1/session/[sessionId]/clear
/eve/v1/session/[sessionId]/compact
/eve/v1/session/[sessionId]/reset
/eve/v1/session/[sessionId]/stream
/eve/v1/task-input/[token]
Internal aliases /__server
Runtime nodejs24.x
Handler index.mjs
Payload 9.11 MB
Function files 9.11 MB across 50 files
Traced dependencies 0 B
Signal 🟠 Bundled file index.mjs is 2.07 MB (22.7%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 index.mjs                     [##################......] 2.07 MB 22.7%
🟠 _chunks/runtime-artifacts.mjs [###############.........] 1.80 MB 19.7%
🟡 _libs/undici.mjs              [########................] 980.5 kB 10.8%
🟡 _chunks/sandbox.mjs           [#######.................] 781.9 kB 8.6%
🟡 _chunks/frames-Dl2Hcma4.mjs   [######..................] 678.7 kB 7.5%
🟠 Other bundled files           [########################] 2.80 MB 30.7%

🧾 Vercel Config

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

Build Timing: e2e/fixtures/agent-tools-sandbox

This is an informational timing measurement inside eve build, from preflight through publication. Output-size measurement and profile writing are excluded.

Build mode: deployable Vercel build with sandbox template prewarm included.

  • Build pipeline: 1.75 s -> 1.80 s (+50.4 ms) vs main (0fe6298).
  • Timing is informational: shared GitHub runners are too variable for a hard timing budget.
Detailed phase timings vs `main (0fe6298)`
Phase Baseline Current Delta
extension.check 10.7 ms 10.3 ms -0.4 ms
project.resolve 0.4 ms 0.3 ms -0.1 ms
workspace.create 0.7 ms 0.7 ms 0.0 ms
host.prepare 198.6 ms 207.9 ms +9.3 ms
vercel.service-prefix.resolve 1.7 ms 1.6 ms -0.1 ms
nitro.create 188.6 ms 193.5 ms +4.9 ms
sandbox.prewarm 163.2 ms 179.3 ms +16.1 ms
nitro.cache.prepare 0.2 ms 0.2 ms 0.0 ms
nitro.prepare 0.6 ms 0.6 ms 0.0 ms
nitro.public-assets 0.6 ms 0.6 ms 0.0 ms
nitro.prerender 0.4 ms 0.4 ms 0.0 ms
nitro.bundle 1.14 s 1.16 s +24.5 ms
nitro.cache.write 0.2 ms 0.2 ms 0.0 ms
vercel.workflow-function.materialize 42.5 ms 38.4 ms -4.1 ms
agent-summary.emit 0.4 ms 0.4 ms 0.0 ms
nitro.close 0.1 ms 0.1 ms 0.0 ms
output.publish 7.2 ms 7.4 ms +0.2 ms
workspace.remove 1.5 ms 1.6 ms +0.1 ms

Co-authored-by: os0xi <6357925+os0xi@users.noreply.github.com>
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