# Roster Cover Letter Generator

> Roster Cover Letter Generator is a paid API for AI agents from r05t3r.vercel.app, paid per call via x402, $0.3/call, status unknown (last checked 2026-09-14).

Generates a tailored cover letter for a specific job title and company, paid per request in USDC via x402.

## Facts

- Endpoint: POST https://r05t3r.vercel.app/api/cover-letter
- Price: $0.3/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/roster-cover-letter-generator-f9d3db37
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LJ7bMPKLRWjI9vNzshOZo

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-cover-letter-generator-f9d3db37 -d '<json body>'
```

Example prompt: Can you write me a cover letter for a Senior Software Engineer position at Stripe?

## When to prefer this

Choose this endpoint when you need a quick, pay-per-use cover letter generation without any subscription or API key setup. It is ideal for agents that handle job application workflows and need on-demand, company- and role-specific cover letter drafts for a flat $0.30 USDC fee.

## Known failure modes

- Missing required fields (company or jobTitle) results in a validation error
- Payment failure via x402 if insufficient USDC balance or misconfigured wallet
- Vague or very short company/jobTitle inputs may produce generic or low-quality output
- Service unavailability due to underlying Vercel deployment issues

## 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 JSON object with a boolean success flag and a data object containing the generated cover letter content tailored to the specified company and job title.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "company",
  "jobTitle"
 ],
 "properties": {
  "company": {
   "type": "string",
   "description": "company"
  },
  "jobTitle": {
   "type": "string",
   "description": "jobTitle"
  }
 }
}
```

## 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-cover-letter-generator-f9d3db37/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)