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Add missing _meta fields to match spec requirements #636

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Merged
merged 1 commit into from
Jun 16, 2025
Merged

Add missing _meta fields to match spec requirements #636

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12 changes: 12 additions & 0 deletions src/types.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -435,6 +435,10 @@ export const ResourceContentsSchema = z
* The MIME type of this resource, if known.
*/
mimeType: z.optional(z.string()),
/**
* Reserved by MCP for protocol-level metadata; implementations must not make assumptions about its contents.
*/
_meta: z.optional(z.object({}).passthrough()),
})
.passthrough();

Expand Down Expand Up @@ -637,6 +641,10 @@ export const PromptSchema = BaseMetadataSchema.extend({
* A list of arguments to use for templating the prompt.
*/
arguments: z.optional(z.array(PromptArgumentSchema)),
/**
* Reserved by MCP for protocol-level metadata; implementations must not make assumptions about its contents.
*/
_meta: z.optional(z.object({}).passthrough()),
});

/**
Expand Down Expand Up @@ -739,6 +747,10 @@ export const EmbeddedResourceSchema = z
.object({
type: z.literal("resource"),
resource: z.union([TextResourceContentsSchema, BlobResourceContentsSchema]),
/**
* Reserved by MCP for protocol-level metadata; implementations must not make assumptions about its contents.
*/
_meta: z.optional(z.object({}).passthrough()),
})
.passthrough();

Expand Down