fix(eve): isolate concurrent approval candidates by benpankow · Pull Request #1364 · vercel/eve

benpankow · 2026-07-29T21:11:45Z

Summary

Prevents a new explicit click from being attached to another responder’s already-pending candidate:

resumes pending candidates only on an internal continuation with no new response
explicit responses always create/dedupe against the clicking responder
preserves concurrent independent candidates for the same request
adds a two-responder regression

Validation

pnpm --filter eve exec vitest run --config vitest.unit.config.ts src/harness/input-requests.test.ts
pnpm --filter eve typecheck

Stack

Depends on #1362.

Signed-off-by: benpankow <ben.pankow@vercel.com>

vercel · 2026-07-29T21:11:51Z

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

Project	Deployment	Actions	Updated (UTC)
eve-docs	Ready	Preview	Jul 29, 2026 9:13pm
eve-docs-4759	Ready	Preview, v0	Jul 29, 2026 9:13pm

github-actions · 2026-07-29T21:14:52Z

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

Key takeaways

No notable deltas vs ben/hitl-durable-candidate-outcomes (e26b786).

Delta vs `ben/hitl-durable-candidate-outcomes (e26b786)`

Area	Metric	Baseline	Current	Delta
Package	Packed tarball	7.43 MB	7.43 MB	-37 B ✅
Package	Unpacked publish size	27.97 MB	27.97 MB	+124 B ⚠️
Package	Installed footprint	90.03 MB	90.03 MB	+124 B ⚠️
Package	Published files	2792	2792	0
Package	Installed files	6575	6575	0
Runtime	Unique function payloads	2	2	0
Runtime	Total function bytes	16.54 MB	16.54 MB	+250 B ⚠️
Runtime	Public routes	11	11	0

Changed function payloads vs ben/hitl-durable-candidate-outcomes (e26b786) (2)

Function	Status	Baseline	Current	Delta	Route changes
`functions/__server.func`	changed	8.27 MB	8.27 MB	+125 B ⚠️	none
`functions/.well-known/workflow/v1/flow.func`	changed	8.27 MB	8.27 MB	+125 B ⚠️	none

`eve init` install

Metric	Baseline	Current	Delta
Installed footprint	128.43 MB	128.43 MB	+124 B ⚠️
Installed packages	130	130	0
dependencies	4	4	0
devDependencies	2	2	0
Dependency package bytes	42.35 MB	42.35 MB	+124 B ⚠️
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: 2026-07-29T21:14:05.490Z
Route aliases: 11 public, 1 internal (12 total aliases)
Vercel routes in config: 14
Severity legend: 🔴 dominant/large, 🟠 notable, 🟡 watch, ⚪ small

Package Drill-Down

Package Details

Package: eve@0.27.8
Package directory: packages/eve
Tarball: 7.43 MB (eve-0.27.8.tgz)
Unpacked payload: 27.97 MB across 2792 published files
Installed footprint: 90.03 MB across 6575 installed files
Installed root package: 26.69 MB
Installed dependencies: 63.34 MB
Runtime dependencies: 2
Peer dependencies: 5 (4 optional)

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

Heavy installed dependencies

eve: 26.69 MB (29.6%)
@rolldown/binding-linux-x64-gnu: 19.28 MB (21.4%)
@rolldown/binding-wasm32-wasi: 10.66 MB (11.8%)
ai: 6.53 MB (7.3%)
@napi-rs/wasm-runtime: 6.39 MB (7.1%)

Publish payload breakdown

Published file size
🔴 dist/src/compiled/shadcn-registry/index.js       [########################] 13.15 MB 47.0%
🟠 dist/src/compiled/experimental-ai-sdk-code-mo... [###.....................] 1.51 MB 5.4%
🟡 dist/src/compiled/@vercel/sandbox/index.js       [#.......................] 632.4 kB 2.3%
🟡 dist/src/compiled/_chunks/workflow/undici-C2Z... [#.......................] 502.4 kB 1.8%
🟡 dist/src/compiled/@chat-adapter/slack/index.js   [#.......................] 440.5 kB 1.6%
🔴 Other published files                            [#####################...] 11.73 MB 42.0%

Installed footprint breakdown

Installed package size
🔴 eve                             [########################] 26.69 MB 29.6%
🔴 @rolldown/binding-linux-x64-gnu [#################.......] 19.28 MB 21.4%
🔴 @rolldown/binding-wasm32-wasi   [##########..............] 10.66 MB 11.8%
🔴 ai                              [######..................] 6.53 MB 7.3%
🔴 @napi-rs/wasm-runtime           [######..................] 6.39 MB 7.1%
🔴 zod                             [#####...................] 5.04 MB 5.6%
🔴 Other installed packages        [##############..........] 15.44 MB 17.2%

Runtime dependencies (2)

Package	Range	Notes
`nitro`	`3.0.260610-beta`
`undici`	`7.28.0`

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: 128.43 MB across 8443 installed files
Installed packages: 130 total (124 transitive-only)
dependencies: 4 direct packages totaling 42.35 MB
devDependencies: 2 direct packages totaling 5.04 MB
Other transitive package files: 81.04 MB

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

Heavy installed dependencies

@typescript/typescript-linux-x64: 27.95 MB (21.8%)
eve: 26.69 MB (20.8%)
@rolldown/binding-linux-x64-gnu: 19.28 MB (15.0%)
@rolldown/binding-wasm32-wasi: 10.66 MB (8.3%)
zod: 9.00 MB (7.0%)

Installed footprint breakdown

Installed package size
🔴 @typescript/typescript-linux-x64 [########################] 27.95 MB 21.8%
🔴 eve                              [#######################.] 26.69 MB 20.8%
🔴 @rolldown/binding-linux-x64-gnu  [#################.......] 19.28 MB 15.0%
🔴 @rolldown/binding-wasm32-wasi    [#########...............] 10.66 MB 8.3%
🔴 zod                              [########................] 9.00 MB 7.0%
🔴 ai                               [######..................] 6.53 MB 5.1%
🔴 @napi-rs/wasm-runtime            [#####...................] 6.39 MB 5.0%
🔴 Other installed packages         [###################.....] 21.94 MB 17.1%

dependencies (4)

Package	Range	Installed size	Share
`@vercel/connect`	`0.4.2`	135.8 kB	0.1%
`ai`	`^7.0.34`	6.53 MB	5.1%
`eve`	`file:eve-0.27.8.tgz`	26.69 MB	20.8%
`zod`	`4.4.3`	9.00 MB	7.0%

devDependencies (2)

Package	Range	Installed size	Share
`@types/node`	`24.x`	2.54 MB	2.0%
`typescript`	`7.0.2`	2.50 MB	1.9%

Function Drill-Down

Payload Size Graph

Unique function payload size and share of total
🔴 functions/.well-known/workflow/v1/flow.func     [########################] 8.27 MB 50.0%
🔴 functions/__server.func                         [########################] 8.27 MB 50.0%

Top Function Payloads

🟠 functions/.well-known/workflow/v1/flow.func • 1 public route • 8.27 MB

Metric	Value
Public routes	`/.well-known/workflow/v1/flow`
Runtime	`nodejs24.x`
Handler	`index.mjs`
Payload	8.27 MB
Function files	8.27 MB across 44 files
Traced dependencies	0 B
Signal	🟠 Bundled file `_chunks/runtime-artifacts.mjs` is 1.58 MB (19.1%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 _chunks/runtime-artifacts.mjs [#############...........] 1.58 MB 19.1%
🟠 index.mjs                     [##########..............] 1.19 MB 14.4%
🟡 _libs/undici.mjs              [########................] 925.6 kB 11.2%
🟡 _chunks/world-vercel.mjs      [#######.................] 900.3 kB 10.9%
🟡 _chunks/sandbox.mjs           [######..................] 767.6 kB 9.3%
🟠 Other bundled files           [########################] 2.91 MB 35.2%

🧾 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 • 10 public routes, 1 internal alias • 8.27 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]/cancel` `/eve/v1/session/[sessionId]/stream` `/eve/v1/session/reset`
Internal aliases	`/__server`
Runtime	`nodejs24.x`
Handler	`index.mjs`
Payload	8.27 MB
Function files	8.27 MB across 44 files
Traced dependencies	0 B
Signal	🟠 Bundled file `_chunks/runtime-artifacts.mjs` is 1.58 MB (19.1%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 _chunks/runtime-artifacts.mjs [#############...........] 1.58 MB 19.1%
🟠 index.mjs                     [##########..............] 1.19 MB 14.4%
🟡 _libs/undici.mjs              [########................] 925.6 kB 11.2%
🟡 _chunks/world-vercel.mjs      [#######.................] 900.3 kB 10.9%
🟡 _chunks/sandbox.mjs           [######..................] 767.6 kB 9.3%
🟠 Other bundled files           [########################] 2.91 MB 35.2%

🧾 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: 1.87 s -> 1.87 s (-9.1 ms) vs ben/hitl-durable-candidate-outcomes (e26b786).
Timing is informational: shared GitHub runners are too variable for a hard timing budget.

Detailed phase timings vs `ben/hitl-durable-candidate-outcomes (e26b786)`

Phase	Baseline	Current	Delta
`extension.check`	1.1 ms	1.1 ms	0.0 ms
`project.resolve`	0.6 ms	0.6 ms	0.0 ms
`workspace.create`	0.7 ms	0.7 ms	0.0 ms
`host.prepare`	256.3 ms	194.7 ms	-61.6 ms
`vercel.service-prefix.resolve`	1.6 ms	1.6 ms	0.0 ms
`nitro.create`	205.1 ms	206.5 ms	+1.4 ms
`sandbox.prewarm`	186.7 ms	198.8 ms	+12.1 ms
`nitro.cache.prepare`	0.3 ms	0.2 ms	-0.1 ms
`nitro.prepare`	0.8 ms	0.7 ms	-0.1 ms
`nitro.public-assets`	0.8 ms	0.7 ms	-0.1 ms
`nitro.prerender`	0.4 ms	0.5 ms	+0.1 ms
`nitro.bundle`	1.21 s	1.25 s	+39.2 ms
`nitro.cache.write`	0.3 ms	0.4 ms	+0.1 ms
`agent-summary.emit`	0.5 ms	0.5 ms	0.0 ms
`nitro.close`	0.1 ms	0.1 ms	0.0 ms
`output.publish`	3.4 ms	3.3 ms	-0.1 ms
`workspace.remove`	2.0 ms	1.9 ms	-0.1 ms

benpankow · 2026-07-29T21:38:06Z

Superseded by the consolidated 7-PR implementation stack starting at #1368 (GitHub stack #1375).

fix(eve): isolate concurrent approval candidates

10d772c

Signed-off-by: benpankow <ben.pankow@vercel.com>

vercel Bot deployed to Preview – eve-docs-4759 July 29, 2026 21:13 View deployment

vercel Bot deployed to Preview – eve-docs July 29, 2026 21:13 View deployment

benpankow closed this Jul 29, 2026

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fix(eve): isolate concurrent approval candidates - #1364

fix(eve): isolate concurrent approval candidates#1364
benpankow wants to merge 1 commit into
ben/hitl-durable-candidate-outcomesfrom
ben/hitl-concurrent-candidate-selection

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Package Details

`eve init` install details

Payload Size Graph

Top Function Payloads

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

Delta vs ben/hitl-durable-candidate-outcomes (e26b786)

eve init install

Package Details

eve init install details

Payload Size Graph

Top Function Payloads

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

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

Delta vs `ben/hitl-durable-candidate-outcomes (e26b786)`

`eve init` install

`eve init` install details

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