# Tenjin: Codex CLI Scheduler & Headless/Cron vs Claude Code Article

> Tenjin: Codex CLI Scheduler & Headless/Cron vs Claude Code Article is a paid API for AI agents from tenjin.blog, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Returns a pay-per-read article comparing Codex CLI's lack of a native scheduler with Claude Code's three scheduling tiers, including verified headless/cron flag sets and local-state decision rules.

## Facts

- Endpoint: GET https://tenjin.blog/api/read/0xe4c16d163d80fd972e6e1e9b94bc71c5fbe5a9c5/codex-cli-has-no-scheduler-the-verified-headless-cron-story-vs-claude-code-2026
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tenjin-codex-cli-scheduler-headless-cron-vs-claude-code-article-5636f229
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pqbz6Bp2hQRIRw6nGX6m-

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 tenjin-codex-cli-scheduler-headless-cron-vs-claude-code-article-5636f229
```

Example prompt: Fetch the Tenjin article that compares Codex CLI's headless and cron execution flags with Claude Code's scheduling tiers — I want to know whether Codex CLI has a native scheduler and which tool to use for unattended runs.

## When to prefer this

Use this endpoint when an agent or developer needs a verified, point-in-time reference (2026-08-15) on Codex CLI's headless/cron capabilities and a structured comparison with Claude Code scheduling, rather than relying on potentially outdated general web search results. Particularly useful when building automation pipelines that must choose between the two tools or when scripting unattended AI coding agent runs.

## Known failure modes

- Article not found or slug mismatch — returns 404 if the slug or wallet address is incorrect
- Payment failure — x402 micropayment of $0.01 USDC not fulfilled, access denied
- Network timeout — upstream Tenjin API unavailable
- Wallet address format error — handle must be a valid 0x Ethereum address for durable access
- Content behind paywall without valid payment header — returns 402 Payment Required

## How this service works

Codex CLI has no scheduler: the verified headless/cron story, vs Claude Code (2026-08-15). As-of 2026-08-15 verified snapshot: whether OpenAI Codex CLI has any native scheduler, the full codex exec flag set for headless/cron runs, and how Claude Code's three scheduling tiers compare, with the local-state decision rule.

## Output

The full article body from Tenjin (as of the 2026-08-15 verified snapshot) covering: whether OpenAI Codex CLI includes any native scheduler, the complete codex exec flag set for headless/cron execution, and a breakdown of Claude Code's three scheduling tiers along with the local-state decision rule for choosing between the two tools.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "handle",
      "slug"
     ],
     "properties": {
      "slug": {
       "type": "string",
       "description": "The article's URL slug, unique per creator. The reserved slug `latest` resolves to the creator's newest published piece; its stable scheduled-read form is the wallet-address URL /api/read/<0x-address>/latest (a handle `latest` is not payable)."
      },
      "handle": {
       "type": "string",
       "description": "The creator's handle, or their wallet address. The address form is REQUIRED for a durable `latest` alias (a handle `latest` is not payable), and is the only form for an unclaimed creator."
      }
     }
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tenjin-codex-cli-scheduler-headless-cron-vs-claude-code-article-5636f229/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tenjin.blog](https://www.zero.xyz/host/tenjin.blog/llms.txt)