# Prelude Codex API Evaluation

**Category:** Verification
**Score:** 64 (C)

This is the agent-readable Devtool Arena evaluation page for Prelude on Codex API.

## Summary

| Metric | Value |
|--------|-------|
| Status | completed |
| Overall score | 64 |
| Grade | C |
| Eval score | 73 |
| Discovery score | 43 |
| Cost | $0.21 |
| Runtime | 1m 20s |
| Tool calls | 24 |
| Errors | 5 |
| Tokens used | 660327 |
| Success | Yes |

## Agent-Readiness Checklist

| Signal | Evidence |
|--------|----------|
| Context7 | Not found |
| llms.txt | https://docs.prelude.so/llms.txt |
| MCP server | https://docs.prelude.so/introduction/mcp.md |
| Typed SDK | https://github.com/prelude-so/node-sdk |
| OpenAPI | Not found |
| Agent skills | Not found |
| CLI | Not found |

## Evaluation Prompt

````text

# Task
Using https://docs.prelude.so/verify/v2/documentation/introduction, complete the following task:

Using Prelude, build me a script that initiates a phone number verification:

1. Send a verification code (OTP) to the phone number "************"
2. Print the verification response including the verification ID and status
3. Then attempt to check the verification with a ***** code "000000"
4. Print the check response as JSON

Print each step's output clearly labeled. 

## 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 | Yes | 0 | 0 | $0.21 ($0.20–0.40, good) |
| Time | Yes | 0 | 1 | 80s (1–2min, great) |
| Efficiency | Yes | 0 | 0 | 24 tool calls (≤25, below average) |
| Found Docs | Yes | 0 | — | Touched docs at docs.prelude.so: yes (14 matching tool calls) |
| Zero Errors | No | 0 | — | Tool outputs with errors/tracebacks: 5 |
| Syntax Valid | Yes | 0 | — | Code compiles/parses correctly |
| Created Files | Yes | 0 | — | Generated files: 2 (need ≥1) |
| Full Execution | Yes | 0 | — | Method: full_execution, Exit: 0 |

## Run Artifacts

| Artifact | Value |
|----------|-------|
| Conversation turns | 29 |
| Tool call traces | 24 |
| Generated files | 2 |
| Exit code | 0 |
| Completed at | 2026-09-27T02:10:13.544603+00:00 |

### Generated Files

- /home/daytona/app/verify_phone.py
- /home/daytona/app/requirements.txt

## Related Pages

- [Codex API leaderboard](/leaderboard/codex/api)
- [Compare Codex API companies](/leaderboard/codex/api/compare)
- [Agent Landscape](/leaderboard/discoverability)

Canonical URL: https://devtoolarena.com/codex/api/prelude