54 lines
1.9 KiB
JavaScript
54 lines
1.9 KiB
JavaScript
/** Read the textual JSON projection from one MCP tool call. */
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export const mcpTextValue = (result) => {
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const text = result.content?.find((item) => item.type === "text")?.text;
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if (typeof text !== "string") throw new Error("Tool result omitted text");
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return text;
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};
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const jsonValue = (result) => JSON.parse(mcpTextValue(result));
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/** Return the compact result projection from one successful MCP tool call. */
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export const requireMcpResult = (result, operation) => {
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if (result.isError === true) {
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throw new Error(`${operation} failed: ${mcpTextValue(result)}`);
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}
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const value = jsonValue(result);
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if (value === null || typeof value !== "object" || !("result" in value)) {
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throw new Error(`${operation} omitted its result projection`);
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}
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return value.result;
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};
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/** Verify provider identity directly from the tool result. */
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export const requireEvidenceProvider = (result, operation, providerId) => {
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const evidence = jsonValue(result);
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if (
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evidence?.evidence?.provider?.id !== providerId ||
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evidence?.evidence?.analysis_profile?.provider?.id !== providerId ||
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typeof evidence.evidence.analysis_profile.provider.version !== "string"
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) {
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throw new Error(`${operation} omitted its concrete provider provenance`);
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}
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};
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/** Verify composed workflow and upstream provider provenance inline. */
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export const requireWorkflowEvidenceProvider = (
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result,
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operation,
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expected,
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) => {
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const evidence = jsonValue(result);
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const profile = evidence?.evidence?.analysis_profile;
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const upstream = profile?.parameters?.upstream_analysis_profile;
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if (
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evidence?.evidence?.provider?.id !== expected.workflowProviderId ||
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profile?.provider?.id !== expected.workflowProviderId ||
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upstream?.provider?.id !== expected.upstreamProviderId ||
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typeof upstream.provider.version !== "string"
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) {
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throw new Error(
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`${operation} omitted its composed workflow or upstream provenance`,
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);
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}
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};
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