# Resend Muse API Evaluation

**Category:** Email
**Score:** 76 (B)

This is the agent-readable Devtool Arena evaluation page for Resend on Muse API.

## Summary

| Metric | Value |
|--------|-------|
| Status | completed |
| Overall score | 76 |
| Grade | B |
| Eval score | 66 |
| Discovery score | 100 |
| Cost | $0.74 |
| Runtime | 2m 31s |
| Tool calls | 29 |
| Errors | 11 |
| Tokens used | 3267125 |
| Success | Yes |

## Agent-Readiness Checklist

| Signal | Evidence |
|--------|----------|
| Context7 | https://context7.com/resend/resend-node |
| llms.txt | https://resend.com/llms.txt |
| MCP server | https://github.com/resend/resend-mcp |
| Typed SDK | https://github.com/resend/resend-node |
| OpenAPI | https://resend.com/openapi.json |
| Agent skills | https://resend.com/.well-known/agent-skills/index.json |
| CLI | https://resend.com/docs/cli-quickstart |

## Evaluation Prompt

````text

# Task
Using https://resend.com/docs, complete the following task:

Using Resend, build me a script that:

1. Create a new email inbox
2. Send an email from that inbox to "support@*****.com" with subject "Hello from Lightsage Leaderboard" and body "This is a ***** email sent via Resend."
3. List all messages in the inbox
4. Print the inbox details, sent message status, and message list as JSON 

## Execution
After creating the script, run it to verify it works:
```bash
cd /home/daytona/app && python <your_script>.py
```

The script should print output to stdout. If there are errors, debug and fix them until it runs successfully.

````

## Grader Results

| Check | Passed | Weight | Score | Details |
|-------|--------|--------|-------|---------|
| Cost | No | 0 | 0 | $0.74 ($0.70–1.00, very expensive) |
| Time | Yes | 0 | 0 | 151s (2–3min, good) |
| Efficiency | No | 0 | 0 | 29 tool calls (>25, inefficient) |
| Found Docs | Yes | 0 | — | Touched docs at resend.com: yes (15 matching tool calls) |
| Zero Errors | No | 0 | — | Tool outputs with errors/tracebacks: 11 |
| Syntax Valid | Yes | 0 | — | Code compiles/parses correctly |
| Created Files | Yes | 0 | — | Generated files: 1 (need ≥1) |
| Full Execution | Yes | 0 | — | Method: full_execution, Exit: 0 |

## Run Artifacts

| Artifact | Value |
|----------|-------|
| Conversation turns | 30 |
| Tool call traces | 29 |
| Generated files | 1 |
| Exit code | 0 |
| Completed at | 2026-10-15T08:52:03.625305+00:00 |

### Generated Files

- /home/daytona/app/resend_inbox_manager.py

## Related Pages

- [Muse API leaderboard](/leaderboard/muse/api)
- [Compare Muse API companies](/leaderboard/muse/api/compare)
- [Agent Landscape](/leaderboard/discoverability)

Canonical URL: https://devtoolarena.com/muse/api/resend