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fix(ai): continue DurableAgent tool loops#2730

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NathanColosimo merged 1 commit into
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nathanc/fix-durable-agent-tool-stop-detection
Jul 1, 2026
Merged

fix(ai): continue DurableAgent tool loops#2730
NathanColosimo merged 1 commit into
mainfrom
nathanc/fix-durable-agent-tool-stop-detection

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@NathanColosimo

@NathanColosimo NathanColosimo commented Jun 30, 2026

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Summary

  • Treat any DurableAgent step with collected tool calls as a tool-call step, even if the provider reports a non-tool finish reason.
  • Add a patch changeset for @workflow/ai.

Fixes #1387.

Testing

  • PATH="/Users/nathancolosimo/.cache/codex-runtimes/codex-primary-runtime/dependencies/node/bin:/Users/nathancolosimo/.cache/codex-runtimes/codex-primary-runtime/dependencies/bin:$PATH" HUSKY=0 pnpm --dir packages/ai exec vitest run src/agent/stream-text-iterator.test.ts

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🦋 Changeset detected

Latest commit: c782692

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package
Name Type
@workflow/ai Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

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

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🧪 E2E Test Results

✅ All tests passed

Summary

Passed Failed Skipped Total
✅ ▲ Vercel Production 1442 0 230 1672
✅ 💻 Local Development 1605 0 219 1824
✅ 📦 Local Production 1605 0 219 1824
✅ 🐘 Local Postgres 1593 0 231 1824
✅ 🪟 Windows 152 0 0 152
✅ 📋 Other 885 0 179 1064
Total 7282 0 1078 8360

Details by Category

✅ ▲ Vercel Production
App Passed Failed Skipped
✅ astro 125 0 27
✅ example 125 0 27
✅ express 125 0 27
✅ fastify 125 0 27
✅ hono 125 0 27
✅ nextjs-turbopack 149 0 3
✅ nextjs-webpack 149 0 3
✅ nitro 125 0 27
✅ nuxt 125 0 27
✅ sveltekit 144 0 8
✅ vite 125 0 27
✅ 💻 Local Development
App Passed Failed Skipped
✅ astro-stable 127 0 25
✅ express-stable 127 0 25
✅ fastify-stable 127 0 25
✅ hono-stable 127 0 25
✅ nextjs-turbopack-canary 133 0 19
✅ nextjs-turbopack-stable 152 0 0
✅ nextjs-webpack-canary 133 0 19
✅ nextjs-webpack-stable 152 0 0
✅ nitro-stable 127 0 25
✅ nuxt-stable 127 0 25
✅ sveltekit-stable 146 0 6
✅ vite-stable 127 0 25
✅ 📦 Local Production
App Passed Failed Skipped
✅ astro-stable 127 0 25
✅ express-stable 127 0 25
✅ fastify-stable 127 0 25
✅ hono-stable 127 0 25
✅ nextjs-turbopack-canary 133 0 19
✅ nextjs-turbopack-stable 152 0 0
✅ nextjs-webpack-canary 133 0 19
✅ nextjs-webpack-stable 152 0 0
✅ nitro-stable 127 0 25
✅ nuxt-stable 127 0 25
✅ sveltekit-stable 146 0 6
✅ vite-stable 127 0 25
✅ 🐘 Local Postgres
App Passed Failed Skipped
✅ astro-stable 126 0 26
✅ express-stable 126 0 26
✅ fastify-stable 126 0 26
✅ hono-stable 126 0 26
✅ nextjs-turbopack-canary 132 0 20
✅ nextjs-turbopack-stable 151 0 1
✅ nextjs-webpack-canary 132 0 20
✅ nextjs-webpack-stable 151 0 1
✅ nitro-stable 126 0 26
✅ nuxt-stable 126 0 26
✅ sveltekit-stable 145 0 7
✅ vite-stable 126 0 26
✅ 🪟 Windows
App Passed Failed Skipped
✅ nextjs-turbopack 152 0 0
✅ 📋 Other
App Passed Failed Skipped
✅ e2e-local-dev-nest-stable 127 0 25
✅ e2e-local-dev-tanstack-start- 127 0 25
✅ e2e-local-postgres-nest-stable 126 0 26
✅ e2e-local-postgres-tanstack-start- 126 0 26
✅ e2e-local-prod-nest-stable 127 0 25
✅ e2e-local-prod-tanstack-start- 127 0 25
✅ e2e-vercel-prod-tanstack-start 125 0 27

📋 View full workflow run

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Nitro 0.046s (+4.8%) 1.008s (~) 0.962s 10 1.00x
💻 Local Express 0.048s (+3.9%) 1.006s (~) 0.958s 10 1.04x
💻 Local Next.js (Turbopack) 0.050s (-8.0% 🟢) 1.007s (~) 0.957s 10 1.07x
🐘 Postgres Next.js (Turbopack) 0.058s (-47.7% 🟢) 1.011s (-2.8%) 0.953s 10 1.25x
🐘 Postgres Express 0.062s (-15.5% 🟢) 1.011s (~) 0.949s 10 1.34x
🐘 Postgres Nitro 0.066s (+4.9%) 1.012s (~) 0.946s 10 1.43x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 0.181s (-50.5% 🟢) 2.101s (+14.7% 🔺) 1.920s 10 1.00x
▲ Vercel Express 0.286s (+41.6% 🔺) 2.280s (+15.3% 🔺) 1.993s 10 1.58x
▲ Vercel Next.js (Turbopack) 0.719s (+55.6% 🔺) 2.558s (~) 1.839s 10 3.98x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 1 step

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Nitro 1.078s (~) 2.006s (~) 0.928s 10 1.00x
💻 Local Express 1.084s (~) 2.007s (~) 0.923s 10 1.01x
💻 Local Next.js (Turbopack) 1.090s (+0.8%) 2.007s (~) 0.917s 10 1.01x
🐘 Postgres Express 1.092s (~) 2.011s (~) 0.919s 10 1.01x
🐘 Postgres Next.js (Turbopack) 1.098s (~) 2.009s (~) 0.911s 10 1.02x
🐘 Postgres Nitro 1.100s (+0.8%) 2.010s (~) 0.910s 10 1.02x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 1.416s (+4.0%) 3.262s (+23.9% 🔺) 1.846s 10 1.00x
▲ Vercel Nitro 1.460s (+8.5% 🔺) 3.198s (+13.1% 🔺) 1.737s 10 1.03x
▲ Vercel Next.js (Turbopack) 2.323s (+3.5%) 3.803s (~) 1.479s 10 1.64x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Next.js (Turbopack) 10.446s (~) 11.023s (~) 0.577s 3 1.00x
💻 Local Nitro 10.454s (~) 11.023s (~) 0.568s 3 1.00x
💻 Local Express 10.460s (~) 11.023s (~) 0.563s 3 1.00x
🐘 Postgres Express 10.474s (~) 11.018s (~) 0.544s 3 1.00x
🐘 Postgres Nitro 10.494s (~) 11.021s (~) 0.527s 3 1.00x
🐘 Postgres Next.js (Turbopack) 10.519s (+1.2%) 11.014s (~) 0.495s 3 1.01x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 11.981s (-0.6%) 13.545s (-0.6%) 1.564s 3 1.00x
▲ Vercel Nitro 12.182s (+2.4%) 13.923s (+1.8%) 1.741s 3 1.02x
▲ Vercel Next.js (Turbopack) 12.925s (+2.0%) 14.240s (-3.4%) 1.315s 3 1.08x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Nitro 13.586s (~) 14.027s (~) 0.441s 5 1.00x
💻 Local Express 13.618s (-0.8%) 14.028s (~) 0.410s 5 1.00x
🐘 Postgres Express 13.628s (~) 14.019s (~) 0.391s 5 1.00x
💻 Local Next.js (Turbopack) 13.631s (~) 14.028s (~) 0.397s 5 1.00x
🐘 Postgres Next.js (Turbopack) 13.664s (~) 14.017s (~) 0.353s 5 1.01x
🐘 Postgres Nitro 13.693s (~) 14.022s (~) 0.329s 5 1.01x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 16.552s (-1.3%) 18.018s (-2.2%) 1.465s 4 1.00x
▲ Vercel Express 16.812s (+2.3%) 18.490s (-1.2%) 1.678s 4 1.02x
▲ Vercel Next.js (Turbopack) 18.000s (+4.6%) 20.025s (+3.7%) 2.025s 3 1.09x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Nitro 12.085s (~) 13.026s (~) 0.941s 7 1.00x
🐘 Postgres Express 12.117s (-2.9%) 13.019s (~) 0.902s 7 1.00x
💻 Local Express 12.148s (~) 13.024s (~) 0.876s 7 1.01x
💻 Local Next.js (Turbopack) 12.235s (~) 13.026s (~) 0.790s 7 1.01x
🐘 Postgres Nitro 12.375s (+1.4%) 13.024s (~) 0.649s 7 1.02x
🐘 Postgres Next.js (Turbopack) 12.444s (~) 13.159s (+1.9%) 0.715s 7 1.03x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 17.916s (+1.7%) 19.267s (~) 1.352s 5 1.00x
▲ Vercel Nitro 18.065s (+4.1%) 19.705s (+4.0%) 1.640s 5 1.01x
▲ Vercel Next.js (Turbopack) 21.003s (+5.7% 🔺) 22.701s (+3.8%) 1.698s 4 1.17x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.165s (-1.5%) 2.009s (~) 0.843s 15 1.00x
🐘 Postgres Next.js (Turbopack) 1.179s (-7.4% 🟢) 2.007s (-1.6%) 0.828s 15 1.01x
🐘 Postgres Nitro 1.195s (-0.6%) 2.009s (~) 0.814s 15 1.03x
💻 Local Express 1.379s (-1.0%) 2.007s (~) 0.628s 15 1.18x
💻 Local Next.js (Turbopack) 1.401s (-1.6%) 2.007s (~) 0.606s 15 1.20x
💻 Local Nitro 1.406s (~) 2.006s (~) 0.600s 15 1.21x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 2.352s (+7.5% 🔺) 4.288s (+12.9% 🔺) 1.935s 7 1.00x
▲ Vercel Express 2.382s (+20.7% 🔺) 3.517s (-5.7% 🟢) 1.135s 9 1.01x
▲ Vercel Next.js (Turbopack) 3.656s (+10.3% 🔺) 5.165s (+0.8%) 1.509s 6 1.55x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 1.325s (~) 2.828s (~) 1.503s 11 1.00x
🐘 Postgres Next.js (Turbopack) 1.330s (~) 3.009s (+21.4% 🔺) 1.679s 10 1.00x
🐘 Postgres Express 1.366s (+0.8%) 2.393s (+3.4%) 1.027s 13 1.03x
💻 Local Next.js (Turbopack) 2.131s (-22.2% 🟢) 2.826s (-9.1% 🟢) 0.695s 11 1.61x
💻 Local Nitro 2.421s (-4.0%) 3.009s (-3.2%) 0.588s 10 1.83x
💻 Local Express 2.449s (-5.2% 🟢) 3.009s (~) 0.560s 10 1.85x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 3.103s (+29.8% 🔺) 4.584s (+19.8% 🔺) 1.481s 7 1.00x
▲ Vercel Express 3.333s (+25.8% 🔺) 4.715s (+17.2% 🔺) 1.383s 7 1.07x
▲ Vercel Next.js (Turbopack) 5.144s (+41.8% 🔺) 6.770s (+17.2% 🔺) 1.626s 5 1.66x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.639s (+3.1%) 4.015s (~) 2.376s 8 1.00x
🐘 Postgres Nitro 1.698s (+6.9% 🔺) 4.142s (+3.2%) 2.445s 8 1.04x
🐘 Postgres Next.js (Turbopack) 2.941s (+61.6% 🔺) 5.845s (+19.5% 🔺) 2.904s 6 1.79x
💻 Local Express 4.514s (-32.2% 🟢) 5.013s (-32.4% 🟢) 0.498s 6 2.75x
💻 Local Next.js (Turbopack) 4.727s (-39.7% 🟢) 5.013s (-37.5% 🟢) 0.286s 6 2.88x
💻 Local Nitro 4.741s (-22.9% 🟢) 5.180s (-24.0% 🟢) 0.439s 6 2.89x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 3.785s (+43.1% 🔺) 5.437s (+28.6% 🔺) 1.651s 6 1.00x
▲ Vercel Express 4.047s (+50.9% 🔺) 5.597s (+29.1% 🔺) 1.550s 6 1.07x
▲ Vercel Next.js (Turbopack) 5.318s (+28.2% 🔺) 6.714s (+9.9% 🔺) 1.396s 5 1.40x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.176s (~) 2.008s (~) 0.832s 15 1.00x
🐘 Postgres Next.js (Turbopack) 1.190s (+0.6%) 2.007s (~) 0.817s 15 1.01x
🐘 Postgres Nitro 1.199s (+2.3%) 2.007s (~) 0.808s 15 1.02x
💻 Local Express 1.418s (-1.9%) 2.007s (~) 0.589s 15 1.21x
💻 Local Nitro 1.430s (+4.3%) 2.006s (~) 0.576s 15 1.22x
💻 Local Next.js (Turbopack) 1.454s (+1.7%) 2.007s (~) 0.553s 15 1.24x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.123s (+12.2% 🔺) 3.451s (-7.1% 🟢) 1.328s 9 1.00x
▲ Vercel Nitro 2.178s (+13.6% 🔺) 3.626s (+2.6%) 1.447s 9 1.03x
▲ Vercel Next.js (Turbopack) 3.491s (+13.4% 🔺) 4.752s (-3.7%) 1.262s 7 1.64x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.272s (-2.6%) 2.393s (-3.1%) 1.121s 13 1.00x
🐘 Postgres Next.js (Turbopack) 1.332s (-5.2% 🟢) 3.009s (+18.8% 🔺) 1.677s 10 1.05x
🐘 Postgres Nitro 1.341s (+2.0%) 2.509s (-3.2%) 1.169s 12 1.05x
💻 Local Express 2.461s (-6.7% 🟢) 3.008s (~) 0.548s 10 1.93x
💻 Local Nitro 2.483s (-9.3% 🟢) 3.009s (-10.0% 🟢) 0.525s 10 1.95x
💻 Local Next.js (Turbopack) 2.852s (+6.9% 🔺) 3.209s (~) 0.357s 10 2.24x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.432s (-3.0%) 3.787s (-4.1%) 1.356s 9 1.00x
▲ Vercel Nitro 2.432s (+4.9%) 3.883s (+2.8%) 1.451s 8 1.00x
▲ Vercel Next.js (Turbopack) 4.074s (+19.6% 🔺) 5.733s (+8.8% 🔺) 1.659s 6 1.68x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.553s (-2.5%) 4.137s (~) 2.584s 8 1.00x
🐘 Postgres Nitro 1.681s (+2.2%) 4.298s (~) 2.616s 7 1.08x
🐘 Postgres Next.js (Turbopack) 2.721s (+4.4%) 5.684s (+8.7% 🔺) 2.962s 6 1.75x
💻 Local Next.js (Turbopack) 4.499s (-29.3% 🟢) 5.681s (-21.3% 🟢) 1.182s 6 2.90x
💻 Local Nitro 5.517s (-14.3% 🟢) 6.214s (-16.2% 🟢) 0.697s 5 3.55x
💻 Local Express 5.759s (-9.1% 🟢) 6.214s (-8.8% 🟢) 0.455s 5 3.71x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 2.829s (~) 4.623s (+5.4% 🔺) 1.794s 7 1.00x
▲ Vercel Express 2.889s (+2.1%) 4.429s (-2.8%) 1.540s 7 1.02x
▲ Vercel Next.js (Turbopack) 4.398s (~) 5.881s (-4.7%) 1.482s 6 1.55x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 0.546s (-1.1%) 1.041s (+3.4%) 0.495s 58 1.00x
🐘 Postgres Next.js (Turbopack) 0.558s (-8.1% 🟢) 1.023s (-2.7%) 0.465s 59 1.02x
💻 Local Nitro 0.570s (-5.6% 🟢) 1.005s (-3.3%) 0.435s 60 1.04x
🐘 Postgres Nitro 0.571s (+1.3%) 1.007s (-1.5%) 0.436s 60 1.05x
💻 Local Express 0.602s (+9.0% 🔺) 1.005s (~) 0.403s 60 1.10x
💻 Local Next.js (Turbopack) 0.607s (-8.2% 🟢) 1.005s (-4.9%) 0.399s 60 1.11x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 2.552s (-7.3% 🟢) 4.066s (-8.7% 🟢) 1.514s 15 1.00x
▲ Vercel Express 2.605s (-3.2%) 4.030s (-6.1% 🟢) 1.425s 16 1.02x
▲ Vercel Next.js (Turbopack) 4.334s (+20.0% 🔺) 6.087s (+13.1% 🔺) 1.753s 10 1.70x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.210s (-10.4% 🟢) 2.008s (-1.1%) 0.797s 45 1.00x
🐘 Postgres Next.js (Turbopack) 1.290s (-13.4% 🟢) 2.008s (-6.0% 🟢) 0.718s 45 1.07x
🐘 Postgres Nitro 1.335s (+1.6%) 2.030s (-1.1%) 0.695s 45 1.10x
💻 Local Nitro 1.438s (+0.6%) 2.006s (~) 0.567s 45 1.19x
💻 Local Express 1.517s (+8.3% 🔺) 2.028s (+1.1%) 0.511s 45 1.25x
💻 Local Next.js (Turbopack) 1.536s (+3.1%) 2.006s (~) 0.471s 45 1.27x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 5.640s (-8.1% 🟢) 7.066s (-6.8% 🟢) 1.427s 13 1.00x
▲ Vercel Express 6.049s (-1.8%) 7.256s (-7.6% 🟢) 1.207s 13 1.07x
▲ Vercel Next.js (Turbopack) 9.170s (+15.6% 🔺) 10.427s (+6.5% 🔺) 1.257s 9 1.63x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 2.516s (-4.3%) 3.111s (+0.9%) 0.595s 39 1.00x
🐘 Postgres Next.js (Turbopack) 2.617s (-11.2% 🟢) 3.033s (-12.1% 🟢) 0.416s 40 1.04x
🐘 Postgres Nitro 2.624s (+0.8%) 3.059s (+0.8%) 0.435s 40 1.04x
💻 Local Nitro 3.108s (-2.2%) 3.821s (-3.1%) 0.713s 32 1.24x
💻 Local Express 3.276s (+9.7% 🔺) 4.009s (+15.7% 🔺) 0.733s 30 1.30x
💻 Local Next.js (Turbopack) 3.323s (+3.8%) 4.009s (~) 0.686s 30 1.32x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 10.906s (-6.8% 🟢) 12.374s (-7.6% 🟢) 1.467s 10 1.00x
▲ Vercel Nitro 11.998s (+1.2%) 13.779s (+2.8%) 1.781s 9 1.10x
▲ Vercel Next.js (Turbopack) 20.758s (+23.1% 🔺) 22.514s (+20.4% 🔺) 1.757s 6 1.90x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.179s (-22.8% 🟢) 1.006s (~) 0.828s 60 1.00x
🐘 Postgres Express 0.204s (-8.3% 🟢) 1.007s (~) 0.803s 60 1.14x
🐘 Postgres Nitro 0.223s (+3.8%) 1.006s (~) 0.784s 60 1.25x
💻 Local Nitro 0.482s (+12.1% 🔺) 1.004s (~) 0.523s 60 2.70x
💻 Local Express 0.498s (+10.7% 🔺) 1.005s (~) 0.507s 60 2.79x
💻 Local Next.js (Turbopack) 0.636s (+1.1%) 1.005s (~) 0.369s 60 3.56x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 1.166s (+25.2% 🔺) 2.413s (-2.6%) 1.247s 25 1.00x
▲ Vercel Nitro 1.197s (+16.8% 🔺) 2.511s (+3.0%) 1.314s 24 1.03x
▲ Vercel Next.js (Turbopack) 2.967s (+49.6% 🔺) 4.463s (+16.1% 🔺) 1.496s 14 2.54x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.285s (-10.3% 🟢) 1.029s (+0.8%) 0.744s 88 1.00x
🐘 Postgres Express 0.307s (-7.9% 🟢) 1.018s (+1.2%) 0.711s 89 1.08x
🐘 Postgres Nitro 0.340s (+1.1%) 1.018s (+1.1%) 0.678s 89 1.19x
💻 Local Express 2.378s (+9.4% 🔺) 3.009s (+8.8% 🔺) 0.630s 30 8.34x
💻 Local Nitro 2.399s (+24.7% 🔺) 3.009s (+19.9% 🔺) 0.610s 30 8.41x
💻 Local Next.js (Turbopack) 2.691s (-8.1% 🟢) 3.076s (-9.0% 🟢) 0.385s 30 9.44x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 1.525s (-5.8% 🟢) 3.068s (+2.1%) 1.544s 30 1.00x
▲ Vercel Express 1.771s (+24.4% 🔺) 3.345s (+11.3% 🔺) 1.574s 27 1.16x
▲ Vercel Next.js (Turbopack) 3.183s (+27.7% 🔺) 4.812s (+17.1% 🔺) 1.629s 19 2.09x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 0.455s (-16.3% 🟢) 1.050s (-6.0% 🟢) 0.595s 115 1.00x
🐘 Postgres Next.js (Turbopack) 0.519s (+3.8%) 3.035s (+20.7% 🔺) 2.515s 40 1.14x
🐘 Postgres Nitro 0.532s (-3.1%) 1.069s (-5.3% 🟢) 0.537s 113 1.17x
💻 Local Nitro 5.606s (-41.9% 🟢) 8.742s (-18.9% 🟢) 3.135s 14 12.33x
💻 Local Express 5.608s (-39.3% 🟢) 8.291s (-20.6% 🟢) 2.683s 15 12.33x
💻 Local Next.js (Turbopack) 6.624s (-38.7% 🟢) 9.416s (-19.9% 🟢) 2.792s 13 14.57x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 1.922s (+8.1% 🔺) 3.591s (-1.9%) 1.669s 34 1.00x
▲ Vercel Nitro 2.140s (+27.6% 🔺) 3.874s (+12.3% 🔺) 1.734s 32 1.11x
▲ Vercel Next.js (Turbopack) 4.672s (+15.0% 🔺) 6.340s (+8.1% 🔺) 1.668s 19 2.43x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks (includes TTFB metrics)
workflow with stream

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Next.js (Turbopack) 1.133s (-0.5%) 1.969s (~) 0.010s (-15.0% 🟢) 2.018s (~) 0.885s 10 1.00x
🐘 Postgres Express 1.144s (-0.7%) 1.999s (~) 0.001s (-8.3% 🟢) 2.010s (~) 0.866s 10 1.01x
💻 Local Nitro 1.151s (~) 2.005s (~) 0.012s (+10.3% 🔺) 2.019s (~) 0.868s 10 1.02x
💻 Local Express 1.158s (+1.5%) 2.004s (~) 0.014s (+30.2% 🔺) 2.021s (~) 0.863s 10 1.02x
🐘 Postgres Next.js (Turbopack) 1.163s (-4.8%) 2.001s (+0.6%) 0.002s (+66.7% 🔺) 2.012s (~) 0.849s 10 1.03x
🐘 Postgres Nitro 1.169s (-1.6%) 1.999s (~) 0.001s (~) 2.012s (~) 0.843s 10 1.03x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.114s (+3.7%) 3.185s (-5.0% 🟢) 2.205s (+59.2% 🔺) 5.836s (+11.5% 🔺) 3.722s 10 1.00x
▲ Vercel Nitro 2.240s (+17.2% 🔺) 3.356s (+7.8% 🔺) 2.285s (+39.6% 🔺) 6.139s (+18.8% 🔺) 3.899s 10 1.06x
▲ Vercel Next.js (Turbopack) 4.102s (+27.8% 🔺) 3.818s (-4.5%) 2.411s (+192.0% 🔺) 7.769s (+27.1% 🔺) 3.667s 10 1.94x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.521s (-4.2%) 2.005s (-1.5%) 0.005s (-10.5% 🟢) 2.025s (-1.7%) 0.504s 30 1.00x
💻 Local Express 1.557s (+1.2%) 2.010s (~) 0.012s (-11.4% 🟢) 2.024s (~) 0.467s 30 1.02x
💻 Local Nitro 1.571s (+0.7%) 2.010s (~) 0.013s (+2.0%) 2.028s (~) 0.457s 30 1.03x
💻 Local Next.js (Turbopack) 1.574s (~) 1.972s (~) 0.012s (+0.6%) 2.026s (~) 0.451s 30 1.04x
🐘 Postgres Next.js (Turbopack) 1.578s (-16.5% 🟢) 2.009s (-11.2% 🟢) 0.005s (-32.1% 🟢) 2.025s (-12.0% 🟢) 0.447s 30 1.04x
🐘 Postgres Nitro 1.635s (+4.0%) 2.005s (~) 0.005s (-6.7% 🟢) 2.027s (~) 0.391s 30 1.08x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 5.668s (~) 6.697s (-6.5% 🟢) 0.460s (+125.2% 🔺) 7.621s (-3.8%) 1.953s 8 1.00x
▲ Vercel Nitro 5.673s (~) 6.921s (-0.7%) 0.386s (+36.0% 🔺) 7.756s (+1.1%) 2.083s 8 1.00x
▲ Vercel Next.js (Turbopack) 10.544s (+11.9% 🔺) 11.377s (+5.8% 🔺) 0.298s (+16.0% 🔺) 12.819s (+8.4% 🔺) 2.275s 5 1.86x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 0.757s (-2.8%) 1.068s (+0.8%) 0.000s (+Infinity% 🔺) 1.079s (~) 0.322s 56 1.00x
🐘 Postgres Nitro 0.840s (+9.1% 🔺) 1.130s (+2.2%) 0.000s (-59.2% 🟢) 1.144s (+2.2%) 0.303s 53 1.11x
🐘 Postgres Next.js (Turbopack) 0.924s (-32.9% 🟢) 1.246s (-36.5% 🟢) 0.000s (NaN%) 1.258s (-37.2% 🟢) 0.334s 48 1.22x
💻 Local Next.js (Turbopack) 1.285s (-7.0% 🟢) 1.886s (-4.7%) 0.001s (+106.3% 🔺) 1.923s (-4.6%) 0.638s 32 1.70x
💻 Local Express 1.373s (+7.9% 🔺) 1.888s (-6.2% 🟢) 0.000s (-37.5% 🟢) 1.891s (-6.2% 🟢) 0.518s 32 1.81x
💻 Local Nitro 1.396s (+7.6% 🔺) 1.920s (-4.6%) 0.001s (+194.6% 🔺) 1.923s (-4.6%) 0.527s 32 1.84x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 3.107s (+7.9% 🔺) 4.264s (-1.6%) 0.000s (+Infinity% 🔺) 4.710s (-2.3%) 1.603s 13 1.00x
▲ Vercel Nitro 3.247s (-98.2% 🟢) 4.491s (-97.6% 🟢) 0.000s (NaN%) 4.959s (-97.3% 🟢) 1.712s 13 1.04x
▲ Vercel Next.js (Turbopack) 4.918s (+16.1% 🔺) 5.665s (+4.3%) 0.003s (+Infinity% 🔺) 6.553s (+5.7% 🔺) 1.635s 10 1.58x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

fan-out fan-in 10 streams (1MB each)

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.653s (-4.5%) 2.257s (-1.3%) 0.000s (~) 2.276s (-1.3%) 0.623s 27 1.00x
🐘 Postgres Nitro 1.786s (-5.5% 🟢) 2.304s (-5.3% 🟢) 0.000s (-100.0% 🟢) 2.319s (-5.3% 🟢) 0.533s 26 1.08x
🐘 Postgres Next.js (Turbopack) 2.112s (-25.3% 🟢) 2.608s (-22.3% 🟢) 0.000s (NaN%) 2.619s (-22.8% 🟢) 0.506s 23 1.28x
💻 Local Express 3.270s (-3.7%) 3.842s (-4.5%) 0.001s (+3.1%) 3.845s (-4.6%) 0.575s 16 1.98x
💻 Local Nitro 3.415s (-7.4% 🟢) 4.027s (-6.7% 🟢) 0.000s (-37.8% 🟢) 4.030s (-6.7% 🟢) 0.616s 15 2.07x
💻 Local Next.js (Turbopack) 3.563s (+2.2%) 4.127s (+3.5%) 0.000s (-60.0% 🟢) 4.164s (+3.2%) 0.601s 15 2.16x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 4.949s (+14.6% 🔺) 6.036s (+6.2% 🔺) 0.000s (NaN%) 6.536s (+6.4% 🔺) 1.588s 10 1.00x
▲ Vercel Nitro 5.064s (+16.4% 🔺) 6.215s (+5.5% 🔺) 0.000s (+Infinity% 🔺) 6.686s (+3.5%) 1.622s 10 1.02x
▲ Vercel Next.js (Turbopack) 7.448s (+7.3% 🔺) 7.899s (~) 0.000s (+Infinity% 🔺) 8.999s (+1.8%) 1.551s 7 1.51x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World 🥇 Fastest Framework Wins
💻 Local Nitro 9/21
🐘 Postgres Express 17/21
▲ Vercel Express 12/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework 🥇 Fastest World Wins
Express 🐘 Postgres 17/21
Next.js (Turbopack) 🐘 Postgres 14/21
Nitro 🐘 Postgres 13/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)
  • 🌐 Platformatic: Community world (local development)

📋 View full workflow run

@NathanColosimo NathanColosimo marked this pull request as ready for review June 30, 2026 23:48
@NathanColosimo NathanColosimo requested review from a team and ijjk as code owners June 30, 2026 23:48
karthikscale3
karthikscale3 approved these changes Jul 1, 2026
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Approved. Behavior matches current AI SDK tool-loop semantics for client tool calls with non-tool finish reasons; regression coverage would still be a useful follow-up.

@NathanColosimo NathanColosimo enabled auto-merge (squash) July 1, 2026 16:40
@NathanColosimo NathanColosimo merged commit 0f02af4 into main Jul 1, 2026
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@NathanColosimo NathanColosimo deleted the nathanc/fix-durable-agent-tool-stop-detection branch July 1, 2026 16:40
github-actions Bot added a commit that referenced this pull request Jul 1, 2026
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fix(ai): continue durable agent tool loops (#2730)
8bf6572 
Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>
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Backport PR opened against stable: #2740. (backport job run)

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@github-actions @NathanColosimo
fix(ai): continue durable agent tool loops (#2730) (#2740)
cfb8f77 
Co-authored-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>
This was referenced Jul 1, 2026
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@karthikscale3 karthikscale3 karthikscale3 approved these changes
@ijjk ijjk Awaiting requested review from ijjk ijjk is a code owner

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DurableAgent stops tool loop when step has tool calls but finishReason is "other"/"unknown"

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@NathanColosimo @karthikscale3