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fix(eve): make MCP connections usable in dev#365

Merged
ruiconti merged 6 commits into
main from
rui/fix-connection-runtime
Jun 27, 2026
Merged

fix(eve): make MCP connections usable in dev #365
ruiconti merged 6 commits into
main from
rui/fix-connection-runtime

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@ruiconti

@ruiconti ruiconti commented Jun 27, 2026 •
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What

  • Fixes the local dev path where /connect writes a connection but the next turn runs the old runtime snapshot. POST /eve/v1/dev/runtime-artifacts/rebuild?force=1 returned 404 because the dev server had no route for it.
  • Adds the dev-only rebuild route and hands it to the authored-source watcher. The watcher already owns compilation, snapshot publication, and its serialized rebuild queue.
  • Probes catalog MCP endpoints at TUI boot and during a session. Auth-gated 401 and 403 responses remain available. Failed endpoints show a yellow alert in /connect with the observed URL and status.
  • Separates skills from MCP connections in model guidance. A mistaken load_skill("linear") now tells the model to use connection_search.
  • Uses localhost for Vercel Connect OAuth callbacks when the local server listens on 127.0.0.1 or [::1], while preserving the active port and leaving other providers unchanged.

Scope

This changes local dev and the /connect picker. It does not update the Datadog catalog URL or alter remote development sessions.

Callback handling

The Connect marker already identifies credentials created by @vercel/connect/eve. Using it at the callback boundary avoids changing custom OAuth providers that have their own registered redirect URI rules.

vercel Bot commented Jun 27, 2026 •
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The latest updates on your projects. Learn more about Vercel for GitHub.

Project Deployment Actions Updated (UTC)
eve-docs Ready Ready Preview, Comment, Open in v0 Jun 27, 2026 2:35pm

github-actions Bot commented Jun 27, 2026 •
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Bundle + Package Summary: apps/fixtures/weather-agent

Key takeaways

  • Runtime delta: function payloads 9.71 MB -> 9.18 MB (-537.3 kB ✅); 1 changed payload.

Delta vs main (8470695)

Area Metric Baseline Current Delta
Package Packed tarball 3.47 MB 3.47 MB +1.8 kB ⚠️
Package Unpacked publish size 12.62 MB 12.63 MB +5.9 kB ⚠️
Package Installed footprint 52.62 MB 52.62 MB +5.9 kB ⚠️
Package Published files 2365 2369 +4
Package Installed files 5573 5577 +4
Runtime Unique function payloads 2 2 0
Runtime Total function bytes 9.71 MB 9.18 MB -537.3 kB ✅
Runtime Public routes 9 9 0
Changed function payloads vs main (8470695) (2)
Function Status Baseline Current Delta Route changes
functions/__server.func changed 4.00 MB 3.46 MB -538.6 kB ✅ none
functions/.well-known/workflow/v1/flow.func changed 5.72 MB 5.72 MB +1.3 kB ⚠️ none
Build Metadata
  • Preset: vercel
  • Nitro: nitro@3.0.260610-beta
  • Output directory: apps/fixtures/weather-agent/.vercel/output
  • Build metadata timestamp: 2026年06月27日T14:35:43.403Z
  • 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@0.16.0
  • Package directory: packages/eve
  • Tarball: 3.47 MB (eve-0.16.0.tgz)
  • Unpacked payload: 12.63 MB across 2369 published files
  • Installed footprint: 52.62 MB across 5577 installed files
  • Installed root package: 11.36 MB
  • Installed dependencies: 41.27 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 (38.5%)
  • eve: 11.36 MB (21.6%)
  • ai: 6.27 MB (11.9%)
  • 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 11.9%
🟡 dist/src/compiled/@workflow/core/runtime.js [##......................] 788.4 kB 6.2%
🟡 dist/src/compiled/@vercel/sandbox/index.js [##......................] 632.0 kB 5.0%
🟡 dist/src/compiled/@chat-adapter/slack/index.js [#.......................] 438.4 kB 3.5%
🟡 dist/src/compiled/_chunks/workflow/attribute-... [#.......................] 371.6 kB 2.9%
🔴 Other published files [########################] 8.89 MB 70.4%
Installed footprint breakdown 
Installed package size
🔴 @rolldown/binding-linux-x64-gnu [########################] 20.26 MB 38.5%
🔴 eve [#############...........] 11.36 MB 21.6%
🔴 ai [#######.................] 6.27 MB 11.9%
🔴 zod [######..................] 5.04 MB 9.6%
🟠 nitro [###.....................] 2.41 MB 4.6%
🟡 rolldown [#.......................] 771.7 kB 1.5%
🔴 Other installed packages [########................] 6.52 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 [########################] 5.72 MB 62.3%
🟠 functions/__server.func [###############.........] 3.46 MB 37.7%

Top Function Payloads

🟠 functions/.well-known/workflow/v1/flow.func • 1 public route • 5.72 MB
Metric Value
Public routes /.well-known/workflow/v1/flow
Runtime nodejs24.x
Handler index.mjs
Payload 5.72 MB
Function files 5.72 MB across 26 files
Traced dependencies 0 B
Signal 🟠 Bundled file __eve_nitro_handler__.mjs is 1.95 MB (34.2%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 __eve_nitro_handler__.mjs [########################] 1.95 MB 34.2%
🟠 _chunks/runtime.mjs [############............] 975.4 kB 17.1%
🟡 _chunks/sandbox.mjs [#########...............] 766.0 kB 13.4%
🟡 _chunks/attribute-changes-DUxG-Gic.mjs [######..................] 473.2 kB 8.3%
🟡 _libs/@ai-sdk/gateway+[...].mjs [#####...................] 413.5 kB 7.2%
🟠 Other bundled files [##############..........] 1.14 MB 19.9%

🧾 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": "__eve776561746865722d6167656e74_wkf_workflow_*",
 "consumer": "default",
 "retryAfterSeconds": 5,
 "initialDelaySeconds": 0
 }
 ]
}
🟠 functions/__server.func • 8 public routes, 1 internal alias • 3.46 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 3.46 MB
Function files 3.46 MB across 19 files
Traced dependencies 0 B
Signal 🟠 Bundled file index.mjs is 990.6 kB (28.6%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 index.mjs [########################] 990.6 kB 28.6%
🟠 _chunks/runtime.mjs [#####################...] 883.8 kB 25.6%
🟠 _chunks/sandbox.mjs [###################.....] 766.0 kB 22.1%
🟡 _chunks/attribute-changes-DUxG-Gic.mjs [###########.............] 448.9 kB 13.0%
⚪ _libs/zod.mjs [###.....................] 114.2 kB 3.3%
🟡 Other bundled files [######..................] 255.4 kB 7.4%

🧾 Vercel Config

{
 "handler": "index.mjs",
 "launcherType": "Nodejs",
 "shouldAddHelpers": false,
 "supportsResponseStreaming": true,
 "runtime": "nodejs24.x"
}
vercel[bot] reacted with eyes emoji

ruiconti added 5 commits June 27, 2026 10:07 
Signed-off-by: Rui Conti <ruiconti@gmail.com>
Signed-off-by: Rui Conti <ruiconti@gmail.com>
Signed-off-by: Rui Conti <ruiconti@gmail.com>
Signed-off-by: Rui Conti <ruiconti@gmail.com>
Signed-off-by: Rui Conti <ruiconti@gmail.com>
Signed-off-by: Rui Conti <ruiconti@gmail.com>
Comment thread packages/eve/src/internal/nitro/host/start-development-server.ts
@ruiconti ruiconti merged commit c0f9749 into main Jun 27, 2026
38 of 39 checks passed
@ruiconti ruiconti deleted the rui/fix-connection-runtime branch June 27, 2026 14:59
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