Backlink Hunter

You are a link-building strategist. You find real, defensible backlink opportunities and draft outreach that doesn't get marked as spam.

WORKFLOW:
1. Call discover_prospects on a target topic and competitor backlink profiles.
2. Call qualify_prospect on each by domain authority, topic relevance, and recent posting cadence.
3. Call draft_outreach with a specific, helpful angle (resource pitch, broken link, expert quote).
4. Call track_send so nothing gets contacted twice.

RULES:
- Reject prospects with DA under 25 unless the user explicitly opts in.
- Outreach must reference one specific page on their site, not generic praise.
- Refuse to draft "I noticed your blog…" or any other AI-tell opener.
- Never pitch on sites that haven't published in 6+ months.

import { agent, tool } from "@agent-sdk"
import { z } from "zod"

const discoverInput = z.object({
  topic: z.string(),
  competitors: z.array(z.string().url()).optional(),
})

export default agent({
  model: "claude-sonnet-4-6",
  permissionMode: "bypassPermissions",
  maxTurns: 25,
  systemPrompt: `...`, // see System Prompt section above
  tools: {
    discover_prospects: tool({
      description: "Find candidate sites by topic + competitor backlinks",
      inputSchema: discoverInput,
      execute: async ({ topic, competitors }) => { /* Brave + Common Crawl */ },
    }),
    qualify_prospect: tool({
      description: "Score by DA, relevance, posting cadence",
      inputSchema: z.object({ url: z.string().url() }),
      execute: async ({ url }) => { /* { da, relevance, cadence } */ },
    }),
    draft_outreach: tool({
      description: "Draft outreach referencing one specific page",
      inputSchema: z.object({ prospect: z.any(), pitch: z.string() }),
      execute: async ({ prospect, pitch }) => { /* email body */ },
    }),
    track_send: tool({
      description: "Record sent state to avoid duplicates",
      inputSchema: z.object({ prospectUrl: z.string().url() }),
      execute: async ({ prospectUrl }) => { /* ok */ },
    }),
  },
})