Registry indexed
Design, review, debug, migrate, or deploy production systems on Cloudflare Workers and related Developer Platform products. Use for material architecture, durability, release, migration, rollback, or live-verification decisions across Workers, Durable Objects, D1, R2, Queues, Wor
Design, review, debug, migrate, or deploy production systems on Cloudflare Workers and related Developer Platform products. Use for material architecture, durability, release, migration, rollback, or live-verification decisions across Workers, Durable Objects, D1, R2, Queues, Workflows, bindings, and routes.
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Apply this guidance proportionally. It is a production reasoning aid, not a mandatory ceremony layer. Stay within the user's requested operation and do not turn a diagnosis or recovery into an architecture program.
Do not mix recovery and refactoring in one production operation.
version uploaded, traffic switched, and
live smoke passed.For SHA-derived, write-once release artifacts, reconcile means bounded
provider readback and a fail-closed decision. Adopt an existing artifact only
when every immutable property matches. Never repair a mismatch in place, add a
durable current-artifact pointer, or create another publication authority merely
to make image, host, application, namespace, or version creation retryable.
Traffic publication and rollback should switch one recorded immutable pointer
when the topology supports it; build-time artifact preparation stays outside
that publication path.
For a measured Cloudflare bottleneck, identify the existing binding, bulk API,
or authenticated REST operation before starting Wrangler or making a network
round trip per item. Consider R2 bindings or direct REST uploads with an
existing scoped token, D1 batch() or set-based SQL, KV bulk writes, Queue
sendBatch(), direct Workers version/deployment readbacks, content-addressed
asset reuse, and coalesced Durable Object writes when semantics permit.
Keep concurrency and transient retries bounded; preserve credential scope, provider limits, metadata, immutable verification, publication ordering, and rollback. Do not introduce S3 credentials, broader permissions, or a new service merely to optimize transport. Keep Wrangler for infrequent complex deployment mutations unless a supported API preserves every safety invariant; verify provider response schemas with a real canary.
When a cutover temporarily retains an old Worker, Durable Object namespace, or container application as the exact rollback target, leave it byte-for-byte and configuration-for-configuration unchanged through the rollback-compatibility window. Retention is temporary compatibility, not permanent dual-running. Remove the old artifact only in a separate bounded cleanup after live and rollback compatibility have been proven; do not hide that deletion inside the cutover or ordinary artifact garbage collection.
Pause when the exact production target, current state, retry safety, or rollback target cannot be resolved. A blocker in an unrelated surface is not permission to broaden the operation.
When a preview or newly launched Cloudflare capability materially improves the design, use it deliberately rather than trusting remembered APIs:
package.json, README/examples, exports, and
.d.ts files. Installed types are the compilation contract; marketing docs
are not..dev.vars*, .env*, credentials, and unexpected
local files. Fail or scrub the build before packaging; a clean Git ignore is
not evidence that build output is clean.Treat type casts between preview packages as an adapter concern and test the runtime seam. Structurally similar workspace, loader, or RPC types from different package versions can compile only after a cast while still disagreeing at runtime.
Retrieve current first-party Cloudflare documentation before relying on API signatures, configuration, limits, pricing, retention, or product support.
name: cloudflare-production-builder description: Design, review, debug, migrate, or deploy production systems on Cloudflare Workers and related Developer Platform products. Use for material architecture, durability, release, migration, rollback, or live-verification decisions across Workers, Durable Objects, D1, R2, Queues, Workflows, bindings, and routes.
--- name: cloudflare-production-builder description: Design, review, debug, migrate, or deploy production systems on Cloudflare Workers and related Developer Platform products. Use for material architecture, durability, release, migration, rollback, or live-verification decisions across Workers, Durable Objects, D1, R2, Queues, Workflows, bindings, and routes. --- # Cloudflare Production Builder Apply this guidance proportionally. It is a production reasoning aid, not a mandatory ceremony layer. Stay within the user's requested operation and do not turn a diagnosis or recovery into an architecture program. ## Choose the operating mode - **Answer or diagnose:** inspect only the evidence needed to explain the behavior. Do not mutate or design a replacement unless asked. - **Recover:** restore a known-good capability with the smallest supported, reversible operation. Preserve evidence and defer refactoring. - **Change or migrate:** design compatibility, durability, rollout, verification, and rollback for the surfaces actually affected. Do not mix recovery and refactoring in one production operation. ## Core contract 1. Identify authoritative state, the coordination key, the durability boundary, and user-visible completion. 2. Treat source, build, upload, configuration, migration, traffic, route, stateful lifecycle, and live behavior as separate facts only when the task depends on those surfaces. 3. Prefer immutable artifacts and conditional pointer changes. Make external mutations idempotent, fenced, conditional, or compensatable. 4. Classify errors before retrying. Persist terminal domain failures; bound transient retries; read authoritative provider state after an ambiguous mutation before replay. Do not turn artifact verification into a resumable controller unless the product operation itself requires durable execution. 5. Preserve accepted work across handoff failures. Use a durable record and a repair path when an initiating request can disappear. 6. Verify the owning live path and exact identity after a production mutation. Use precise language such as `version uploaded`, `traffic switched`, and `live smoke passed`. For SHA-derived, write-once release artifacts, `reconcile` means bounded provider readback and a fail-closed decision. Adopt an existing artifact only when every immutable property matches. Never repair a mismatch in place, add a durable current-artifact pointer, or create another publication authority merely to make image, host, application, namespace, or version creation retryable. Traffic publication and rollback should switch one recorded immutable pointer when the topology supports it; build-time artifact preparation stays outside that publication path. ## Prefer provider-native hot paths For a measured Cloudflare bottleneck, identify the existing binding, bulk API, or authenticated REST operation before starting Wrangler or making a network round trip per item. Consider R2 bindings or direct REST uploads with an existing scoped token, D1 `batch()` or set-based SQL, KV bulk writes, Queue `sendBatch()`, direct Workers version/deployment readbacks, content-addressed asset reuse, and coalesced Durable Object writes when semantics permit. Keep concurrency and transient retries bounded; preserve credential scope, provider limits, metadata, immutable verification, publication ordering, and rollback. Do not introduce S3 credentials, broader permissions, or a new service merely to optimize transport. Keep Wrangler for infrequent complex deployment mutations unless a supported API preserves every safety invariant; verify provider response schemas with a real canary. ## Proportional workflow 1. Inspect current code and provisioned state for the touched surface. Resolve the exact account, environment, resource, bindings, and live version before mutation. 2. State the intended authority and repair/rollback path. For simple work, one sentence is enough. 3. Run focused local or remote checks that can falsify the change. Do not add unrelated global gates. 4. When authorized to deploy, upload and inspect before switching when the provider supports it. Use a verification path supported by the topology. 5. After mutation, verify only the affected rollout axes plus the user-visible capability. Record exact identities and rollback evidence. When a cutover temporarily retains an old Worker, Durable Object namespace, or container application as the exact rollback target, leave it byte-for-byte and configuration-for-configuration unchanged through the rollback-compatibility window. Retention is temporary compatibility, not permanent dual-running. Remove the old artifact only in a separate bounded cleanup after live and rollback compatibility have been proven; do not hide that deletion inside the cutover or ordinary artifact garbage collection. Pause when the exact production target, current state, retry safety, or rollback target cannot be resolved. A blocker in an unrelated surface is not permission to broaden the operation. ## Integrate preview and newly launched capabilities safely When a preview or newly launched Cloudflare capability materially improves the design, use it deliberately rather than trusting remembered APIs: 1. Retrieve current first-party docs and changelog entries at action time. Note the capability's maturity, launch date, documented limits, and production support status. 2. Inspect the installed package's `package.json`, README/examples, exports, and `.d.ts` files. Installed types are the compilation contract; marketing docs are not. 3. Put the preview surface behind a narrow adapter so churn does not spread through domain code. Keep a supported fallback or an explicit failure mode when the capability is not production-suitable. 4. Pin the exact package version during the proving release. Compile and build immediately after wiring each preview primitive; do not defer integration feedback until the full system exists. 5. Inspect generated artifacts, not just source: Worker entrypoint, generated Wrangler config, asset directories, binding names, Durable Object migrations, and the path the release system will actually upload. 6. Scan the final bundle for `.dev.vars*`, `.env*`, credentials, and unexpected local files. Fail or scrub the build before packaging; a clean Git ignore is not evidence that build output is clean. 7. Record the exact version and local evidence separately from live evidence. Do not claim production behavior until the exact uploaded artifact, bindings, routes, migrations, and owning live path have passed smoke verification. Treat type casts between preview packages as an adapter concern and test the runtime seam. Structurally similar workspace, loader, or RPC types from different package versions can compile only after a cast while still disagreeing at runtime. ## Load references selectively - [primitive-selection.md](references/primitive-selection.md): use when the product or coordination primitive is genuinely undecided. - [durable-execution.md](references/durable-execution.md): use for asynchronous handoffs, retries, queues, Workflows, or long-running external work. - [storage-and-caching.md](references/storage-and-caching.md): use for storage, cache, and authorization boundaries. - [deployments-and-migrations.md](references/deployments-and-migrations.md): use for multi-surface rollout, schema or Durable Object lifecycle, and rollback. - [multitenant-hosting-and-security.md](references/multitenant-hosting-and-security.md): use when customer-controlled code, public-fork changes, or another adversarial execution boundary requires tenant isolation. Do not load it solely because a preview comes from a same-repository PR by trusted collaborators. - [observability-testing-and-cost.md](references/observability-testing-and-cost.md): use when adding or reviewing telemetry, test layers, or spend controls. Retrieve current first-party Cloudflare documentation before relying on API signatures, configuration, limits, pricing, retention, or product support.
Skill source recorded
Skill instructions are recorded. This is not a runtime test, safety guarantee or compatibility certification.
Review before install: Avoid automatic install
License: MIT
Listed tools are metadata hints, not tested compatibility. Agent prompts are suggested handoffs.
Check the source for dependencies, API keys and third-party costs. A public repository does not mean every service is free.
Repository metadata and review signals are advisory. Popularity, source discovery and successful execution are different facts.
Version reported in registry metadata; check source releases before relying on it.
Quality
69/100
Promising
Trust
62/100
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
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"documentation": "Strong README/SKILL.md context",
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}Listing source
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Audit
77/100
Needs review
Copies are not installs. Installation counts require a reported successful installation; they are not a blanket quality guarantee.