7c84d9ffe3
- Add FastMCPCompat.js to monkey-patch zodToJsonSchema function - Force JSON Schema Draft-07 instead of Draft 2020-12 - Use relative refs for better MCP client compatibility - Fixes MCP server startup error in Augment IDE and other clients Closes #1284 Co-authored-by: Ralph Khreish <Crunchyman-ralph@users.noreply.github.com>
33 lines
1.0 KiB
JavaScript
33 lines
1.0 KiB
JavaScript
/**
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* @fileoverview JSON Schema Draft-07 compatibility patch
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*
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* This patches the zod-to-json-schema module to default to JSON Schema Draft-7
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* instead of Draft 2020-12 for better MCP client compatibility.
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*
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* The patch works by overriding the zodToJsonSchema function's default behavior.
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*/
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import * as zodToJsonSchemaModule from 'zod-to-json-schema';
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// Store original function
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const originalZodToJsonSchema = zodToJsonSchemaModule.zodToJsonSchema;
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/**
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* Patched zodToJsonSchema function that defaults to Draft-07
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*/
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function patchedZodToJsonSchema(schema, options = {}) {
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// Force JSON Schema Draft-07 for MCP compatibility
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const draft7Options = {
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...options,
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target: 'jsonSchema7',
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$refStrategy: options.$refStrategy || 'relative'
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};
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return originalZodToJsonSchema(schema, draft7Options);
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}
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// Apply the patch by overriding the module's export
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zodToJsonSchemaModule.zodToJsonSchema = patchedZodToJsonSchema;
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// Export the patched FastMCP (just re-export regular FastMCP since we've patched at module level)
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export { FastMCP } from 'fastmcp'; |