# Roster Referral Letter Generator

> Roster Referral Letter Generator is a paid API for AI agents from r05t3r.vercel.app, paid per call via x402, $0.2/call, status unknown (last checked 2026-10-13).

Generates a professional job referral letter or recommendation for a candidate applying to a specific role at a target company

## Facts

- Endpoint: POST https://r05t3r.vercel.app/api/referral?utm_source=zero.xyz
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/roster-referral-letter-generator-70815ca1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1m1BnIsy0eTYKjHfJCkok

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability roster-referral-letter-generator-70815ca1 -d '<json body>'
```

Example prompt: Can you write a referral letter for my friend Sarah, who is applying for a Senior Software Engineer role at Stripe? We worked together for two years at the same startup, and her biggest achievement was leading a team that reduced infrastructure costs by 40%.

## When to prefer this

Choose this endpoint when you need to programmatically generate personalized job referral or recommendation letters at scale without managing subscriptions or API keys — ideal for AI agents automating job application workflows, career coaches, or recruiting tools that need pay-per-use referral generation with no upfront commitment.

## Known failure modes

- Missing required fields (target_role or target_company) returns a validation error
- Payment not fulfilled via x402 results in a 402 Payment Required response
- Vague or empty achievements/relationship fields may produce generic, lower-quality referral output
- Server errors on the Vercel deployment may return 500 with no data
- Malformed JSON body returns a 400 Bad Request

## How this service works

Job listings and hiring data for AI agents. No auth, no subscriptions. Pay per request in USDC via x402.

## Output

Returns a success flag and a data object containing the generated referral letter or recommendation content tailored to the specified role, company, candidate achievements, and the referrer's relationship with the candidate.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "target_role",
  "target_company"
 ],
 "properties": {
  "target_role": {
   "type": "string"
  },
  "achievements": {
   "type": "string"
  },
  "relationship": {
   "type": "string"
  },
  "target_company": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "success",
  "data"
 ],
 "properties": {
  "data": {
   "type": "object"
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/roster-referral-letter-generator-70815ca1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from r05t3r.vercel.app](https://www.zero.xyz/host/r05t3r.vercel.app/llms.txt)