xiaomo
eb027e70f4
- Add `content: string | null` to RoleStep type - Resolve contentHash → text for the last step when building ThreadContext - Update buildAgentPrompt to include <output> tag with step content - Add 16k content quota with truncation - Update tests
65 lines
1.8 KiB
TypeScript
65 lines
1.8 KiB
TypeScript
import type { AgentContext } from "@uncaged/workflow-runtime";
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/** Max characters of step content to include in the prompt. */
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const CONTENT_QUOTA = 16_000;
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/** Builds the full agent prompt: system instructions plus summarized thread history. */
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export async function buildAgentPrompt(ctx: AgentContext): Promise<string> {
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const lines: string[] = [];
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lines.push(ctx.currentRole.systemPrompt);
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lines.push("");
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lines.push("## Task");
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lines.push(ctx.start.content);
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const { steps } = ctx;
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if (steps.length === 0) {
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return lines.join("\n");
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}
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if (steps.length === 1) {
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const s = steps[0];
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lines.push("");
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lines.push(`## Step: ${s.role}`);
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lines.push("");
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lines.push(`Meta: ${JSON.stringify(s.meta)}`);
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appendContent(lines, s.content);
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} else {
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lines.push("");
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lines.push("## Previous Steps");
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for (let i = 0; i < steps.length - 1; i++) {
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const s = steps[i];
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lines.push("");
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lines.push(`### Step ${i + 1}: ${s.role}`);
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lines.push(`Summary: ${JSON.stringify(s.meta)}`);
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}
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const last = steps[steps.length - 1];
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lines.push("");
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lines.push(`## Latest Step: ${last.role}`);
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lines.push("");
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lines.push(`Meta: ${JSON.stringify(last.meta)}`);
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appendContent(lines, last.content);
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}
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lines.push("");
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lines.push("## Tools");
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lines.push(
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`Use \`uncaged-workflow thread ${ctx.threadId}\` to read full details of any previous step.`,
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);
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return lines.join("\n");
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}
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function appendContent(lines: string[], content: string | null | undefined): void {
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if (content === null || content === undefined || content.trim() === "") {
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return;
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}
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const truncated =
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content.length > CONTENT_QUOTA
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? `${content.slice(0, CONTENT_QUOTA)}\n... (truncated)`
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: content;
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lines.push("");
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lines.push("<output>");
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lines.push(truncated);
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lines.push("</output>");
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}
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