diff --git a/types/defines/artifacts.d.ts b/types/defines/artifacts.d.ts
index 9d6188ab77b..e8fe1004472 100644
--- a/types/defines/artifacts.d.ts
+++ b/types/defines/artifacts.d.ts
@@ -95,12 +95,17 @@ interface ArtifactsTokenListResult {
   total: number;
 }
 
-/** Handle for a single repository. Returned by Artifacts.get(). */
+/**
+ * Handle for a single repository. Returned by Artifacts.get().
+ *
+ * Methods may throw `ArtifactsError` with code `INTERNAL_ERROR` if an unexpected service error occurs.
+ */
 interface ArtifactsRepo extends ArtifactsRepoInfo {
   /**
    * Create an access token for this repo.
    * @param scope Token scope: "write" (default) or "read".
    * @param ttl Time-to-live in seconds (default 86400, min 60, max 31536000).
+   * @throws {ArtifactsError} with code `INVALID_TTL` if ttl is out of range.
    */
   createToken(
     scope?: 'write' | 'read',
@@ -114,6 +119,7 @@ interface ArtifactsRepo extends ArtifactsRepoInfo {
    * Revoke a token by plaintext or ID.
    * @param tokenOrId Plaintext token or token ID.
    * @returns true if revoked, false if not found.
+   * @throws {ArtifactsError} with code `INVALID_INPUT` if tokenOrId is empty.
    */
   revokeToken(tokenOrId: string): Promise<boolean>;
 
@@ -123,6 +129,9 @@ interface ArtifactsRepo extends ArtifactsRepoInfo {
    * Fork this repo to a new repo.
    * @param name Target repository name.
    * @param opts Optional: description, readOnly flag, defaultBranchOnly (default true).
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the target repo already exists.
+   * @throws {ArtifactsError} with code `FORK_IN_PROGRESS` if a fork is already running.
    */
   fork(
     name: string,
@@ -134,13 +143,57 @@ interface ArtifactsRepo extends ArtifactsRepoInfo {
   ): Promise<ArtifactsCreateRepoResult>;
 }
 
-/** Artifacts binding — namespace-level operations. */
+// ── Error types ──────────────────────────────────────────────────────────────
+
+/**
+ * Error codes returned by Artifacts binding operations.
+ *
+ * Each code maps to a numeric code available on `ArtifactsError.numericCode`.
+ */
+type ArtifactsErrorCode =
+  | 'ALREADY_EXISTS'
+  | 'NOT_FOUND'
+  | 'IMPORT_IN_PROGRESS'
+  | 'FORK_IN_PROGRESS'
+  | 'INVALID_INPUT'
+  | 'INVALID_REPO_NAME'
+  | 'INVALID_TTL'
+  | 'INVALID_URL'
+  | 'REMOTE_AUTH_REQUIRED'
+  | 'UPSTREAM_UNAVAILABLE'
+  | 'MEMORY_LIMIT'
+  | 'INTERNAL_ERROR';
+
+/**
+ * Error thrown by Artifacts binding operations.
+ *
+ * Uses a string `.code` discriminator following the Cloudflare platform
+ * convention (StreamError, ImagesError, etc.). The `.numericCode` matches
+ * the REST API `errors[].code` values.
+ */
+interface ArtifactsError extends Error {
+  readonly name: 'ArtifactsError';
+  /** String error code for programmatic matching. */
+  readonly code: ArtifactsErrorCode;
+  /** Numeric error code matching the REST API. */
+  readonly numericCode: number;
+}
+
+// ── Binding ──────────────────────────────────────────────────────────────────
+
+/**
+ * Artifacts binding — namespace-level operations.
+ *
+ * Methods may throw `ArtifactsError` with code `INTERNAL_ERROR` if an unexpected service error occurs.
+ */
 interface Artifacts {
   /**
    * Create a new repository with an initial access token.
    * @param name Repository name (alphanumeric, dots, hyphens, underscores).
    * @param opts Optional: readOnly flag, description, default branch name.
    * @returns Repo metadata with initial token.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the repo already exists.
    */
   create(
     name: string,
@@ -151,6 +204,9 @@ interface Artifacts {
    * Get a handle to an existing repository.
    * @param name Repository name.
    * @returns Repo handle.
+   * @throws {ArtifactsError} with code `NOT_FOUND` if the repo does not exist.
+   * @throws {ArtifactsError} with code `IMPORT_IN_PROGRESS` if the repo is still importing.
+   * @throws {ArtifactsError} with code `FORK_IN_PROGRESS` if the repo is still forking.
    */
   get(name: string): Promise<ArtifactsRepo>;
 
@@ -158,6 +214,14 @@ interface Artifacts {
    * Import a repository from an external git remote.
    * @param params Source URL and optional branch/depth, plus target name and options.
    * @returns Repo metadata with initial token.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if the target name is invalid.
+   * @throws {ArtifactsError} with code `INVALID_INPUT` if the source URL is not valid HTTPS.
+   * @throws {ArtifactsError} with code `INVALID_URL` if the source URL does not point to a git repository.
+   * @throws {ArtifactsError} with code `REMOTE_AUTH_REQUIRED` if the remote requires authentication.
+   * @throws {ArtifactsError} with code `NOT_FOUND` if the remote repository does not exist.
+   * @throws {ArtifactsError} with code `UPSTREAM_UNAVAILABLE` if the remote cannot be reached.
+   * @throws {ArtifactsError} with code `MEMORY_LIMIT` if the import exceeds service memory limits.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the target repo already exists.
    */
   import(params: {
     source: {
@@ -187,6 +251,7 @@ interface Artifacts {
    * Delete a repository and all associated tokens.
    * @param name Repository name.
    * @returns true if deleted, false if not found.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
    */
   delete(name: string): Promise<boolean>;
 }
diff --git a/types/generated-snapshot/experimental/index.d.ts b/types/generated-snapshot/experimental/index.d.ts
index 08e93fe3474..a24240d382e 100755
--- a/types/generated-snapshot/experimental/index.d.ts
+++ b/types/generated-snapshot/experimental/index.d.ts
@@ -11852,12 +11852,17 @@ interface ArtifactsTokenListResult {
   /** Total number of tokens for the repository. */
   total: number;
 }
-/** Handle for a single repository. Returned by Artifacts.get(). */
+/**
+ * Handle for a single repository. Returned by Artifacts.get().
+ *
+ * Methods may throw `ArtifactsError` with code `INTERNAL_ERROR` if an unexpected service error occurs.
+ */
 interface ArtifactsRepo extends ArtifactsRepoInfo {
   /**
    * Create an access token for this repo.
    * @param scope Token scope: "write" (default) or "read".
    * @param ttl Time-to-live in seconds (default 86400, min 60, max 31536000).
+   * @throws {ArtifactsError} with code `INVALID_TTL` if ttl is out of range.
    */
   createToken(
     scope?: "write" | "read",
@@ -11869,6 +11874,7 @@ interface ArtifactsRepo extends ArtifactsRepoInfo {
    * Revoke a token by plaintext or ID.
    * @param tokenOrId Plaintext token or token ID.
    * @returns true if revoked, false if not found.
+   * @throws {ArtifactsError} with code `INVALID_INPUT` if tokenOrId is empty.
    */
   revokeToken(tokenOrId: string): Promise<boolean>;
   // ── Fork ──
@@ -11876,6 +11882,9 @@ interface ArtifactsRepo extends ArtifactsRepoInfo {
    * Fork this repo to a new repo.
    * @param name Target repository name.
    * @param opts Optional: description, readOnly flag, defaultBranchOnly (default true).
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the target repo already exists.
+   * @throws {ArtifactsError} with code `FORK_IN_PROGRESS` if a fork is already running.
    */
   fork(
     name: string,
@@ -11886,13 +11895,53 @@ interface ArtifactsRepo extends ArtifactsRepoInfo {
     },
   ): Promise<ArtifactsCreateRepoResult>;
 }
-/** Artifacts binding — namespace-level operations. */
+// ── Error types ──────────────────────────────────────────────────────────────
+/**
+ * Error codes returned by Artifacts binding operations.
+ *
+ * Each code maps to a numeric code available on `ArtifactsError.numericCode`.
+ */
+type ArtifactsErrorCode =
+  | "ALREADY_EXISTS"
+  | "NOT_FOUND"
+  | "IMPORT_IN_PROGRESS"
+  | "FORK_IN_PROGRESS"
+  | "INVALID_INPUT"
+  | "INVALID_REPO_NAME"
+  | "INVALID_TTL"
+  | "INVALID_URL"
+  | "REMOTE_AUTH_REQUIRED"
+  | "UPSTREAM_UNAVAILABLE"
+  | "MEMORY_LIMIT"
+  | "INTERNAL_ERROR";
+/**
+ * Error thrown by Artifacts binding operations.
+ *
+ * Uses a string `.code` discriminator following the Cloudflare platform
+ * convention (StreamError, ImagesError, etc.). The `.numericCode` matches
+ * the REST API `errors[].code` values.
+ */
+interface ArtifactsError extends Error {
+  readonly name: "ArtifactsError";
+  /** String error code for programmatic matching. */
+  readonly code: ArtifactsErrorCode;
+  /** Numeric error code matching the REST API. */
+  readonly numericCode: number;
+}
+// ── Binding ──────────────────────────────────────────────────────────────────
+/**
+ * Artifacts binding — namespace-level operations.
+ *
+ * Methods may throw `ArtifactsError` with code `INTERNAL_ERROR` if an unexpected service error occurs.
+ */
 interface Artifacts {
   /**
    * Create a new repository with an initial access token.
    * @param name Repository name (alphanumeric, dots, hyphens, underscores).
    * @param opts Optional: readOnly flag, description, default branch name.
    * @returns Repo metadata with initial token.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the repo already exists.
    */
   create(
     name: string,
@@ -11906,12 +11955,23 @@ interface Artifacts {
    * Get a handle to an existing repository.
    * @param name Repository name.
    * @returns Repo handle.
+   * @throws {ArtifactsError} with code `NOT_FOUND` if the repo does not exist.
+   * @throws {ArtifactsError} with code `IMPORT_IN_PROGRESS` if the repo is still importing.
+   * @throws {ArtifactsError} with code `FORK_IN_PROGRESS` if the repo is still forking.
    */
   get(name: string): Promise<ArtifactsRepo>;
   /**
    * Import a repository from an external git remote.
    * @param params Source URL and optional branch/depth, plus target name and options.
    * @returns Repo metadata with initial token.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if the target name is invalid.
+   * @throws {ArtifactsError} with code `INVALID_INPUT` if the source URL is not valid HTTPS.
+   * @throws {ArtifactsError} with code `INVALID_URL` if the source URL does not point to a git repository.
+   * @throws {ArtifactsError} with code `REMOTE_AUTH_REQUIRED` if the remote requires authentication.
+   * @throws {ArtifactsError} with code `NOT_FOUND` if the remote repository does not exist.
+   * @throws {ArtifactsError} with code `UPSTREAM_UNAVAILABLE` if the remote cannot be reached.
+   * @throws {ArtifactsError} with code `MEMORY_LIMIT` if the import exceeds service memory limits.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the target repo already exists.
    */
   import(params: {
     source: {
@@ -11939,6 +11999,7 @@ interface Artifacts {
    * Delete a repository and all associated tokens.
    * @param name Repository name.
    * @returns true if deleted, false if not found.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
    */
   delete(name: string): Promise<boolean>;
 }
diff --git a/types/generated-snapshot/experimental/index.ts b/types/generated-snapshot/experimental/index.ts
index 6e9a53463b3..a221881cb04 100755
--- a/types/generated-snapshot/experimental/index.ts
+++ b/types/generated-snapshot/experimental/index.ts
@@ -11864,12 +11864,17 @@ export interface ArtifactsTokenListResult {
   /** Total number of tokens for the repository. */
   total: number;
 }
-/** Handle for a single repository. Returned by Artifacts.get(). */
+/**
+ * Handle for a single repository. Returned by Artifacts.get().
+ *
+ * Methods may throw `ArtifactsError` with code `INTERNAL_ERROR` if an unexpected service error occurs.
+ */
 export interface ArtifactsRepo extends ArtifactsRepoInfo {
   /**
    * Create an access token for this repo.
    * @param scope Token scope: "write" (default) or "read".
    * @param ttl Time-to-live in seconds (default 86400, min 60, max 31536000).
+   * @throws {ArtifactsError} with code `INVALID_TTL` if ttl is out of range.
    */
   createToken(
     scope?: "write" | "read",
@@ -11881,6 +11886,7 @@ export interface ArtifactsRepo extends ArtifactsRepoInfo {
    * Revoke a token by plaintext or ID.
    * @param tokenOrId Plaintext token or token ID.
    * @returns true if revoked, false if not found.
+   * @throws {ArtifactsError} with code `INVALID_INPUT` if tokenOrId is empty.
    */
   revokeToken(tokenOrId: string): Promise<boolean>;
   // ── Fork ──
@@ -11888,6 +11894,9 @@ export interface ArtifactsRepo extends ArtifactsRepoInfo {
    * Fork this repo to a new repo.
    * @param name Target repository name.
    * @param opts Optional: description, readOnly flag, defaultBranchOnly (default true).
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the target repo already exists.
+   * @throws {ArtifactsError} with code `FORK_IN_PROGRESS` if a fork is already running.
    */
   fork(
     name: string,
@@ -11898,13 +11907,53 @@ export interface ArtifactsRepo extends ArtifactsRepoInfo {
     },
   ): Promise<ArtifactsCreateRepoResult>;
 }
-/** Artifacts binding — namespace-level operations. */
+// ── Error types ──────────────────────────────────────────────────────────────
+/**
+ * Error codes returned by Artifacts binding operations.
+ *
+ * Each code maps to a numeric code available on `ArtifactsError.numericCode`.
+ */
+export type ArtifactsErrorCode =
+  | "ALREADY_EXISTS"
+  | "NOT_FOUND"
+  | "IMPORT_IN_PROGRESS"
+  | "FORK_IN_PROGRESS"
+  | "INVALID_INPUT"
+  | "INVALID_REPO_NAME"
+  | "INVALID_TTL"
+  | "INVALID_URL"
+  | "REMOTE_AUTH_REQUIRED"
+  | "UPSTREAM_UNAVAILABLE"
+  | "MEMORY_LIMIT"
+  | "INTERNAL_ERROR";
+/**
+ * Error thrown by Artifacts binding operations.
+ *
+ * Uses a string `.code` discriminator following the Cloudflare platform
+ * convention (StreamError, ImagesError, etc.). The `.numericCode` matches
+ * the REST API `errors[].code` values.
+ */
+export interface ArtifactsError extends Error {
+  readonly name: "ArtifactsError";
+  /** String error code for programmatic matching. */
+  readonly code: ArtifactsErrorCode;
+  /** Numeric error code matching the REST API. */
+  readonly numericCode: number;
+}
+// ── Binding ──────────────────────────────────────────────────────────────────
+/**
+ * Artifacts binding — namespace-level operations.
+ *
+ * Methods may throw `ArtifactsError` with code `INTERNAL_ERROR` if an unexpected service error occurs.
+ */
 export interface Artifacts {
   /**
    * Create a new repository with an initial access token.
    * @param name Repository name (alphanumeric, dots, hyphens, underscores).
    * @param opts Optional: readOnly flag, description, default branch name.
    * @returns Repo metadata with initial token.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the repo already exists.
    */
   create(
     name: string,
@@ -11918,12 +11967,23 @@ export interface Artifacts {
    * Get a handle to an existing repository.
    * @param name Repository name.
    * @returns Repo handle.
+   * @throws {ArtifactsError} with code `NOT_FOUND` if the repo does not exist.
+   * @throws {ArtifactsError} with code `IMPORT_IN_PROGRESS` if the repo is still importing.
+   * @throws {ArtifactsError} with code `FORK_IN_PROGRESS` if the repo is still forking.
    */
   get(name: string): Promise<ArtifactsRepo>;
   /**
    * Import a repository from an external git remote.
    * @param params Source URL and optional branch/depth, plus target name and options.
    * @returns Repo metadata with initial token.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if the target name is invalid.
+   * @throws {ArtifactsError} with code `INVALID_INPUT` if the source URL is not valid HTTPS.
+   * @throws {ArtifactsError} with code `INVALID_URL` if the source URL does not point to a git repository.
+   * @throws {ArtifactsError} with code `REMOTE_AUTH_REQUIRED` if the remote requires authentication.
+   * @throws {ArtifactsError} with code `NOT_FOUND` if the remote repository does not exist.
+   * @throws {ArtifactsError} with code `UPSTREAM_UNAVAILABLE` if the remote cannot be reached.
+   * @throws {ArtifactsError} with code `MEMORY_LIMIT` if the import exceeds service memory limits.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the target repo already exists.
    */
   import(params: {
     source: {
@@ -11951,6 +12011,7 @@ export interface Artifacts {
    * Delete a repository and all associated tokens.
    * @param name Repository name.
    * @returns true if deleted, false if not found.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
    */
   delete(name: string): Promise<boolean>;
 }
diff --git a/types/generated-snapshot/latest/index.d.ts b/types/generated-snapshot/latest/index.d.ts
index 20c39772a75..989b8c88bbf 100755
--- a/types/generated-snapshot/latest/index.d.ts
+++ b/types/generated-snapshot/latest/index.d.ts
@@ -11184,12 +11184,17 @@ interface ArtifactsTokenListResult {
   /** Total number of tokens for the repository. */
   total: number;
 }
-/** Handle for a single repository. Returned by Artifacts.get(). */
+/**
+ * Handle for a single repository. Returned by Artifacts.get().
+ *
+ * Methods may throw `ArtifactsError` with code `INTERNAL_ERROR` if an unexpected service error occurs.
+ */
 interface ArtifactsRepo extends ArtifactsRepoInfo {
   /**
    * Create an access token for this repo.
    * @param scope Token scope: "write" (default) or "read".
    * @param ttl Time-to-live in seconds (default 86400, min 60, max 31536000).
+   * @throws {ArtifactsError} with code `INVALID_TTL` if ttl is out of range.
    */
   createToken(
     scope?: "write" | "read",
@@ -11201,6 +11206,7 @@ interface ArtifactsRepo extends ArtifactsRepoInfo {
    * Revoke a token by plaintext or ID.
    * @param tokenOrId Plaintext token or token ID.
    * @returns true if revoked, false if not found.
+   * @throws {ArtifactsError} with code `INVALID_INPUT` if tokenOrId is empty.
    */
   revokeToken(tokenOrId: string): Promise<boolean>;
   // ── Fork ──
@@ -11208,6 +11214,9 @@ interface ArtifactsRepo extends ArtifactsRepoInfo {
    * Fork this repo to a new repo.
    * @param name Target repository name.
    * @param opts Optional: description, readOnly flag, defaultBranchOnly (default true).
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the target repo already exists.
+   * @throws {ArtifactsError} with code `FORK_IN_PROGRESS` if a fork is already running.
    */
   fork(
     name: string,
@@ -11218,13 +11227,53 @@ interface ArtifactsRepo extends ArtifactsRepoInfo {
     },
   ): Promise<ArtifactsCreateRepoResult>;
 }
-/** Artifacts binding — namespace-level operations. */
+// ── Error types ──────────────────────────────────────────────────────────────
+/**
+ * Error codes returned by Artifacts binding operations.
+ *
+ * Each code maps to a numeric code available on `ArtifactsError.numericCode`.
+ */
+type ArtifactsErrorCode =
+  | "ALREADY_EXISTS"
+  | "NOT_FOUND"
+  | "IMPORT_IN_PROGRESS"
+  | "FORK_IN_PROGRESS"
+  | "INVALID_INPUT"
+  | "INVALID_REPO_NAME"
+  | "INVALID_TTL"
+  | "INVALID_URL"
+  | "REMOTE_AUTH_REQUIRED"
+  | "UPSTREAM_UNAVAILABLE"
+  | "MEMORY_LIMIT"
+  | "INTERNAL_ERROR";
+/**
+ * Error thrown by Artifacts binding operations.
+ *
+ * Uses a string `.code` discriminator following the Cloudflare platform
+ * convention (StreamError, ImagesError, etc.). The `.numericCode` matches
+ * the REST API `errors[].code` values.
+ */
+interface ArtifactsError extends Error {
+  readonly name: "ArtifactsError";
+  /** String error code for programmatic matching. */
+  readonly code: ArtifactsErrorCode;
+  /** Numeric error code matching the REST API. */
+  readonly numericCode: number;
+}
+// ── Binding ──────────────────────────────────────────────────────────────────
+/**
+ * Artifacts binding — namespace-level operations.
+ *
+ * Methods may throw `ArtifactsError` with code `INTERNAL_ERROR` if an unexpected service error occurs.
+ */
 interface Artifacts {
   /**
    * Create a new repository with an initial access token.
    * @param name Repository name (alphanumeric, dots, hyphens, underscores).
    * @param opts Optional: readOnly flag, description, default branch name.
    * @returns Repo metadata with initial token.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the repo already exists.
    */
   create(
     name: string,
@@ -11238,12 +11287,23 @@ interface Artifacts {
    * Get a handle to an existing repository.
    * @param name Repository name.
    * @returns Repo handle.
+   * @throws {ArtifactsError} with code `NOT_FOUND` if the repo does not exist.
+   * @throws {ArtifactsError} with code `IMPORT_IN_PROGRESS` if the repo is still importing.
+   * @throws {ArtifactsError} with code `FORK_IN_PROGRESS` if the repo is still forking.
    */
   get(name: string): Promise<ArtifactsRepo>;
   /**
    * Import a repository from an external git remote.
    * @param params Source URL and optional branch/depth, plus target name and options.
    * @returns Repo metadata with initial token.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if the target name is invalid.
+   * @throws {ArtifactsError} with code `INVALID_INPUT` if the source URL is not valid HTTPS.
+   * @throws {ArtifactsError} with code `INVALID_URL` if the source URL does not point to a git repository.
+   * @throws {ArtifactsError} with code `REMOTE_AUTH_REQUIRED` if the remote requires authentication.
+   * @throws {ArtifactsError} with code `NOT_FOUND` if the remote repository does not exist.
+   * @throws {ArtifactsError} with code `UPSTREAM_UNAVAILABLE` if the remote cannot be reached.
+   * @throws {ArtifactsError} with code `MEMORY_LIMIT` if the import exceeds service memory limits.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the target repo already exists.
    */
   import(params: {
     source: {
@@ -11271,6 +11331,7 @@ interface Artifacts {
    * Delete a repository and all associated tokens.
    * @param name Repository name.
    * @returns true if deleted, false if not found.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
    */
   delete(name: string): Promise<boolean>;
 }
diff --git a/types/generated-snapshot/latest/index.ts b/types/generated-snapshot/latest/index.ts
index 9821fd88ad4..ed0c2cd4c74 100755
--- a/types/generated-snapshot/latest/index.ts
+++ b/types/generated-snapshot/latest/index.ts
@@ -11196,12 +11196,17 @@ export interface ArtifactsTokenListResult {
   /** Total number of tokens for the repository. */
   total: number;
 }
-/** Handle for a single repository. Returned by Artifacts.get(). */
+/**
+ * Handle for a single repository. Returned by Artifacts.get().
+ *
+ * Methods may throw `ArtifactsError` with code `INTERNAL_ERROR` if an unexpected service error occurs.
+ */
 export interface ArtifactsRepo extends ArtifactsRepoInfo {
   /**
    * Create an access token for this repo.
    * @param scope Token scope: "write" (default) or "read".
    * @param ttl Time-to-live in seconds (default 86400, min 60, max 31536000).
+   * @throws {ArtifactsError} with code `INVALID_TTL` if ttl is out of range.
    */
   createToken(
     scope?: "write" | "read",
@@ -11213,6 +11218,7 @@ export interface ArtifactsRepo extends ArtifactsRepoInfo {
    * Revoke a token by plaintext or ID.
    * @param tokenOrId Plaintext token or token ID.
    * @returns true if revoked, false if not found.
+   * @throws {ArtifactsError} with code `INVALID_INPUT` if tokenOrId is empty.
    */
   revokeToken(tokenOrId: string): Promise<boolean>;
   // ── Fork ──
@@ -11220,6 +11226,9 @@ export interface ArtifactsRepo extends ArtifactsRepoInfo {
    * Fork this repo to a new repo.
    * @param name Target repository name.
    * @param opts Optional: description, readOnly flag, defaultBranchOnly (default true).
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the target repo already exists.
+   * @throws {ArtifactsError} with code `FORK_IN_PROGRESS` if a fork is already running.
    */
   fork(
     name: string,
@@ -11230,13 +11239,53 @@ export interface ArtifactsRepo extends ArtifactsRepoInfo {
     },
   ): Promise<ArtifactsCreateRepoResult>;
 }
-/** Artifacts binding — namespace-level operations. */
+// ── Error types ──────────────────────────────────────────────────────────────
+/**
+ * Error codes returned by Artifacts binding operations.
+ *
+ * Each code maps to a numeric code available on `ArtifactsError.numericCode`.
+ */
+export type ArtifactsErrorCode =
+  | "ALREADY_EXISTS"
+  | "NOT_FOUND"
+  | "IMPORT_IN_PROGRESS"
+  | "FORK_IN_PROGRESS"
+  | "INVALID_INPUT"
+  | "INVALID_REPO_NAME"
+  | "INVALID_TTL"
+  | "INVALID_URL"
+  | "REMOTE_AUTH_REQUIRED"
+  | "UPSTREAM_UNAVAILABLE"
+  | "MEMORY_LIMIT"
+  | "INTERNAL_ERROR";
+/**
+ * Error thrown by Artifacts binding operations.
+ *
+ * Uses a string `.code` discriminator following the Cloudflare platform
+ * convention (StreamError, ImagesError, etc.). The `.numericCode` matches
+ * the REST API `errors[].code` values.
+ */
+export interface ArtifactsError extends Error {
+  readonly name: "ArtifactsError";
+  /** String error code for programmatic matching. */
+  readonly code: ArtifactsErrorCode;
+  /** Numeric error code matching the REST API. */
+  readonly numericCode: number;
+}
+// ── Binding ──────────────────────────────────────────────────────────────────
+/**
+ * Artifacts binding — namespace-level operations.
+ *
+ * Methods may throw `ArtifactsError` with code `INTERNAL_ERROR` if an unexpected service error occurs.
+ */
 export interface Artifacts {
   /**
    * Create a new repository with an initial access token.
    * @param name Repository name (alphanumeric, dots, hyphens, underscores).
    * @param opts Optional: readOnly flag, description, default branch name.
    * @returns Repo metadata with initial token.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the repo already exists.
    */
   create(
     name: string,
@@ -11250,12 +11299,23 @@ export interface Artifacts {
    * Get a handle to an existing repository.
    * @param name Repository name.
    * @returns Repo handle.
+   * @throws {ArtifactsError} with code `NOT_FOUND` if the repo does not exist.
+   * @throws {ArtifactsError} with code `IMPORT_IN_PROGRESS` if the repo is still importing.
+   * @throws {ArtifactsError} with code `FORK_IN_PROGRESS` if the repo is still forking.
    */
   get(name: string): Promise<ArtifactsRepo>;
   /**
    * Import a repository from an external git remote.
    * @param params Source URL and optional branch/depth, plus target name and options.
    * @returns Repo metadata with initial token.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if the target name is invalid.
+   * @throws {ArtifactsError} with code `INVALID_INPUT` if the source URL is not valid HTTPS.
+   * @throws {ArtifactsError} with code `INVALID_URL` if the source URL does not point to a git repository.
+   * @throws {ArtifactsError} with code `REMOTE_AUTH_REQUIRED` if the remote requires authentication.
+   * @throws {ArtifactsError} with code `NOT_FOUND` if the remote repository does not exist.
+   * @throws {ArtifactsError} with code `UPSTREAM_UNAVAILABLE` if the remote cannot be reached.
+   * @throws {ArtifactsError} with code `MEMORY_LIMIT` if the import exceeds service memory limits.
+   * @throws {ArtifactsError} with code `ALREADY_EXISTS` if the target repo already exists.
    */
   import(params: {
     source: {
@@ -11283,6 +11343,7 @@ export interface Artifacts {
    * Delete a repository and all associated tokens.
    * @param name Repository name.
    * @returns true if deleted, false if not found.
+   * @throws {ArtifactsError} with code `INVALID_REPO_NAME` if name is invalid.
    */
   delete(name: string): Promise<boolean>;
 }