fix(eve): compose the bridge with registered telemetry integrations by chadhietala · Pull Request #1676 · vercel/eve

chadhietala · 2026-08-05T16:41:47Z

Third in the instrumentation-provider stack, on top of #1670.

Why

The AI SDK treats a per-call integrations list as replacing the globally registered ones, not adding to them:

When provided, these integrations will take precedence over the globally registered integrations for this call.

eve passes integrations whenever it attaches its instrumentation bridge, so anything an authored agent/instrumentation.ts installed with registerTelemetry stopped receiving events for exactly the calls it cared about. eve worked around this by hand-recomposing createOtelIntegration(), which covered eve's own OpenTelemetry integration and nothing else.

That is survivable today only because the bridge is dev-only. It has to be correct before the bridge runs everywhere, which the provider work depends on.

Approach

Read the registered integrations and compose the bridge ahead of them.

integrations:
  bridgeIntegration === undefined
    ? undefined
    : [bridgeIntegration, ...getRegisteredTelemetryIntegrations()],

Both shapes eve produces today are unchanged. With no authored instrumentation eve never calls ensureOtelIntegration, so nothing is registered and the list is just the bridge. With authored instrumentation eve's OpenTelemetry integration is registered, so the list is the bridge and that integration — the same pair as before, now the registered instance rather than a fresh one per call. What changes is that an integration eve did not install also survives.

otel-integration.ts becomes ai-sdk-telemetry.ts, since it no longer only wraps the OTel integration, and createOtelIntegration stops being exported for per-call composition.

Verification

pnpm fmt, pnpm lint, pnpm guard:invariants
pnpm --filter eve typecheck
pnpm test:unit — 5,893 passed
pnpm test:integration — 575 passed
Falsified the new coverage: reverting enrichTelemetry to [bridgeIntegration] fails composes the bridge with every registered integration.

A per-call `integrations` list replaces the AI SDK's registered integrations rather than adding to them, so attaching eve's instrumentation bridge silently stopped every integration an authored module had installed with `registerTelemetry`. eve hand-recomposed only its own OpenTelemetry integration, which covered eve but nothing else. Read the registered integrations and compose the bridge ahead of them. That is unchanged for both shapes eve produces today — nothing is registered when there is no authored instrumentation, and eve's own OpenTelemetry integration is the only entry when there is — while anything an author registered now survives. `otel-integration.ts` becomes `ai-sdk-telemetry.ts`: it no longer only wraps the OTel integration. Signed-off-by: Chad Hietala <chadhietala@gmail.com>

vercel · 2026-08-05T16:41:53Z

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Project	Deployment	Actions	Updated (UTC)
eve-docs	Ready	Preview	Aug 5, 2026 4:43pm
eve-docs-4759	Ready	Preview, v0	Aug 5, 2026 4:43pm

chadhietala · 2026-08-05T16:45:16Z

Not needed yet. The bridge only exists when instrumentationPluginPath === undefined, so no authored instrumentation — and therefore nothing registered — can coexist with it. AI_SDK_TELEMETRY_INTEGRATIONS is always empty when eve passes integrations, and the [bridge, createOtelIntegration()] branch this replaced is unreachable.

This becomes live once #1661 runs structural agent instrumentation alongside authored instrumentation. Branch instr/03-compose-integrations (ac4520d) is left in place to rebase onto that.

github-actions · 2026-08-05T16:45:26Z

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

Key takeaways

No notable deltas vs instr/02-flat-events (725c9e7).

Delta vs `instr/02-flat-events (725c9e7)`

Area	Metric	Baseline	Current	Delta
Package	Packed tarball	7.60 MB	7.60 MB	+53 B ⚠️
Package	Unpacked publish size	28.51 MB	28.52 MB	+369 B ⚠️
Package	Installed footprint	71.84 MB	71.84 MB	+369 B ⚠️
Package	Published files	2978	2978	0
Package	Installed files	6677	6677	0
Runtime	Unique function payloads	2	2	0
Runtime	Total function bytes	16.98 MB	16.98 MB	+22 B ⚠️
Runtime	Public routes	13	13	0

Changed function payloads vs instr/02-flat-events (725c9e7) (2)

Function	Status	Baseline	Current	Delta	Route changes
`functions/__server.func`	changed	8.49 MB	8.49 MB	+11 B ⚠️	none
`functions/.well-known/workflow/v1/flow.func`	changed	8.49 MB	8.49 MB	+11 B ⚠️	none

`eve init` install

Metric	Baseline	Current	Delta
Installed footprint	110.25 MB	110.25 MB	+369 B ⚠️
Installed packages	121	121	0
dependencies	4	4	0
devDependencies	2	2	0
Dependency package bytes	42.93 MB	42.93 MB	+369 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: 2026-08-05T16:44:36.432Z
Route aliases: 13 public, 1 internal (14 total aliases)
Vercel routes in config: 16
Severity legend: 🔴 dominant/large, 🟠 notable, 🟡 watch, ⚪ small

Package Drill-Down

Package Details

Package: eve@0.29.5
Package directory: packages/eve
Tarball: 7.60 MB (eve-0.29.5.tgz)
Unpacked payload: 28.52 MB across 2978 published files
Installed footprint: 71.84 MB across 6677 installed files
Installed root package: 27.16 MB
Installed dependencies: 44.68 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: 27.16 MB (37.8%)
@rolldown/binding-linux-x64-gnu: 19.35 MB (26.9%)
ai: 6.60 MB (9.2%)
zod: 5.07 MB (7.1%)
undici: 3.50 MB (4.9%)

Publish payload breakdown

Published file size
🔴 dist/src/compiled/shadcn-registry/index.js       [#################.......] 9.68 MB 34.0%
🟠 dist/src/compiled/@photon-ai/chat-adapter-ime... [####....................] 2.42 MB 8.5%
🟠 dist/src/compiled/experimental-ai-sdk-code-mo... [###.....................] 1.51 MB 5.3%
🟡 dist/src/compiled/_chunks/node/undici-DWL_MYm... [#.......................] 502.4 kB 1.8%
🟡 dist/src/compiled/_chunks/workflow/undici-DWL... [#.......................] 502.4 kB 1.8%
🔴 Other published files                            [########################] 13.90 MB 48.7%

Installed footprint breakdown

Installed package size
🔴 eve                             [########################] 27.16 MB 37.8%
🔴 @rolldown/binding-linux-x64-gnu [#################.......] 19.35 MB 26.9%
🔴 ai                              [######..................] 6.60 MB 9.2%
🔴 zod                             [####....................] 5.07 MB 7.1%
🟠 undici                          [###.....................] 3.50 MB 4.9%
🟠 nitro                           [##......................] 2.41 MB 3.3%
🔴 Other installed packages        [#######.................] 7.76 MB 10.8%

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: 110.25 MB across 8553 installed files
Installed packages: 121 total (115 transitive-only)
dependencies: 4 direct packages totaling 42.93 MB
devDependencies: 2 direct packages totaling 5.04 MB
Other transitive package files: 62.29 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 (25.3%)
eve: 27.16 MB (24.6%)
@rolldown/binding-linux-x64-gnu: 19.35 MB (17.5%)
zod: 9.02 MB (8.2%)
ai: 6.60 MB (6.0%)

Installed footprint breakdown

Installed package size
🔴 @typescript/typescript-linux-x64 [########################] 27.95 MB 25.3%
🔴 eve                              [#######################.] 27.16 MB 24.6%
🔴 @rolldown/binding-linux-x64-gnu  [#################.......] 19.35 MB 17.5%
🔴 zod                              [########................] 9.02 MB 8.2%
🔴 ai                               [######..................] 6.60 MB 6.0%
🟠 undici                           [###.....................] 3.50 MB 3.2%
🔴 Other installed packages         [##############..........] 16.67 MB 15.1%

dependencies (4)

Package	Range	Installed size	Share
`@vercel/connect`	`0.4.3`	141.0 kB	0.1%
`ai`	`^7.0.38`	6.60 MB	6.0%
`eve`	`file:eve-0.29.5.tgz`	27.16 MB	24.6%
`zod`	`4.4.3`	9.02 MB	8.2%

devDependencies (2)

Package	Range	Installed size	Share
`@types/node`	`24.x`	2.54 MB	2.3%
`typescript`	`7.0.2`	2.50 MB	2.3%

Function Drill-Down

Payload Size Graph

Unique function payload size and share of total
🔴 functions/.well-known/workflow/v1/flow.func     [########################] 8.49 MB 50.0%
🔴 functions/__server.func                         [########################] 8.49 MB 50.0%

Top Function Payloads

🟠 functions/.well-known/workflow/v1/flow.func • 1 public route • 8.49 MB

Metric	Value
Public routes	`/.well-known/workflow/v1/flow`
Runtime	`nodejs24.x`
Handler	`index.mjs`
Payload	8.49 MB
Function files	8.49 MB across 43 files
Traced dependencies	0 B
Signal	🟠 Bundled file `index.mjs` is 2.34 MB (27.6%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 index.mjs                       [########################] 2.34 MB 27.6%
🟠 _chunks/runtime-artifacts.mjs   [################........] 1.60 MB 18.9%
🟡 _libs/undici.mjs                [##########..............] 980.5 kB 11.5%
🟡 _chunks/sandbox.mjs             [########................] 769.0 kB 9.1%
🟡 _libs/@ai-sdk/gateway+[...].mjs [####....................] 432.8 kB 5.1%
🟠 Other bundled files             [########################] 2.37 MB 27.9%

🧾 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 • 12 public routes, 1 internal alias • 8.49 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/clear` `/eve/v1/session/compact` `/eve/v1/session/reset`
Internal aliases	`/__server`
Runtime	`nodejs24.x`
Handler	`index.mjs`
Payload	8.49 MB
Function files	8.49 MB across 43 files
Traced dependencies	0 B
Signal	🟠 Bundled file `index.mjs` is 2.34 MB (27.6%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 index.mjs                       [########################] 2.34 MB 27.6%
🟠 _chunks/runtime-artifacts.mjs   [################........] 1.60 MB 18.9%
🟡 _libs/undici.mjs                [##########..............] 980.5 kB 11.5%
🟡 _chunks/sandbox.mjs             [########................] 769.0 kB 9.1%
🟡 _libs/@ai-sdk/gateway+[...].mjs [####....................] 432.8 kB 5.1%
🟠 Other bundled files             [########################] 2.36 MB 27.9%

🧾 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: 2.35 s -> 2.13 s (-218.5 ms) vs instr/02-flat-events (725c9e7).
Timing is informational: shared GitHub runners are too variable for a hard timing budget.

Detailed phase timings vs `instr/02-flat-events (725c9e7)`

Phase	Baseline	Current	Delta
`extension.check`	7.3 ms	1.3 ms	-6.0 ms
`project.resolve`	8.1 ms	0.6 ms	-7.5 ms
`workspace.create`	11.8 ms	0.7 ms	-11.1 ms
`host.prepare`	377.3 ms	187.5 ms	-189.8 ms
`vercel.service-prefix.resolve`	1.9 ms	1.8 ms	-0.1 ms
`nitro.create`	272.0 ms	260.6 ms	-11.4 ms
`sandbox.prewarm`	235.4 ms	248.0 ms	+12.6 ms
`nitro.cache.prepare`	0.2 ms	0.3 ms	+0.1 ms
`nitro.prepare`	0.7 ms	0.7 ms	0.0 ms
`nitro.public-assets`	0.7 ms	0.7 ms	0.0 ms
`nitro.prerender`	0.5 ms	0.5 ms	0.0 ms
`nitro.bundle`	1.36 s	1.37 s	+16.8 ms
`nitro.cache.write`	0.5 ms	0.3 ms	-0.2 ms
`vercel.workflow-function.materialize`	69.9 ms	48.4 ms	-21.5 ms
`agent-summary.emit`	0.6 ms	0.6 ms	0.0 ms
`nitro.close`	0.2 ms	0.2 ms	0.0 ms
`output.publish`	3.1 ms	3.1 ms	0.0 ms
`workspace.remove`	1.7 ms	1.7 ms	0.0 ms

vercel Bot deployed to Preview – eve-docs-4759 August 5, 2026 16:43 View deployment

vercel Bot deployed to Preview – eve-docs August 5, 2026 16:43 View deployment

chadhietala closed this Aug 5, 2026

chadhietala mentioned this pull request Aug 7, 2026

docs(eve): document the instrumentation provider layout #1819

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fix(eve): compose the bridge with registered telemetry integrations - #1676

fix(eve): compose the bridge with registered telemetry integrations#1676
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chadhietala commented Aug 5, 2026

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

Delta vs instr/02-flat-events (725c9e7)

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 `instr/02-flat-events (725c9e7)`

`eve init` install

`eve init` install details

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