Post to Telegram from Codex

Codex drafts it. You approve it. PostDelegate posts it.Telegram: Text, photos, videos and files to a channel or group.

How to post to Telegram from Codex

Add PostDelegate to Codex. Add the server to ~/.codex/config.toml as below. Run codex mcp login postdelegate and sign in in your browser.
~/.codex/config.toml
```
[mcp_servers.postdelegate]
url = "https://app.postdelegate.com/mcp-oauth-dynamic"
```
Connect Telegram in PostDelegate. In Telegram, add @PostDelegateBot to your channel or group. In a channel, make it an admin that can post messages; only admins can post in channels. Use the Telegram app on your phone or computer for this, because the web version does not let you make a bot a channel admin.
Ask Codex for a draft. Describe the post in plain words. Codex checks your Telegram channel's rules, creates the post and sends back a preview link.

Teach Codex the posting rules

Add PostDelegate’s AGENTS.md to your repository, so Codex knows the MCP tools, the REST API and the safety rules when it works there. Agent files has the steps.

What to ask Codex

Mention any Telegram setting in plain words and Codex fills it in. Codex can also read text files in your project, such as a changelog or a draft in Markdown.

Draft a Telegram announcement for our channel about tonight’s maintenance window, then show me the preview link.
Schedule a reminder in our Telegram group for Friday at 18:00: “Live Q&A starts in one hour.”
Post the release notes from CHANGELOG.md to our Telegram channel tomorrow at 10:00, as a draft first.

What Codex can do on your Telegram channel

Check the rules first. Before writing, it reads your Telegram channel's length limit (4,096 characters) and required settings.
Draft, schedule or post. It creates a draft, a scheduled post or an immediate post, and runs the same checks as the app.
Use your media. It attaches files from your media library or adds one from a public link.
Review and fix. It lists what is scheduled, changes the Telegram settings of a post that has not gone out, and deletes posts you no longer want.

Telegram channels are a direct line to an audience, and groups are where communities talk. PostDelegate sends each scheduled post as a message from @PostDelegateBot, so announcements, links and media go out at the time you set without anyone online to press send.

Telegram settings Codex can fill in

Setting	Notes
Text	Up to 4,096 characters. With an attachment, Telegram limits the caption to 1,024 characters.
Attachments	Photos, videos or other files. Up to 10 items per album; more are sent as further albums.

Before you start

Channels need @PostDelegateBot as an admin that can post. Telegram's web version cannot appoint a bot as channel admin, so use the phone or desktop app for that step.
Posts come from @PostDelegateBot, not from your own Telegram account.

The Telegram channel guide has every field, and MCP tools lists exactly what an assistant can and cannot do.

Questions

Will Codex publish to Telegram without asking me?

Not unless you ask it to. Ask for a draft and the post waits on your calendar until you schedule it, and your workspace's approvals apply as usual. Tools that change data are marked as such, so Codex can ask you before it schedules or deletes anything.

Do I need an API key to connect Codex?

No. Codex signs in with your PostDelegate account through your browser. An API key is only for clients that cannot sign in, as described in MCP clients.

Does it cost extra to use Codex with PostDelegate?

No. The MCP server is on every plan, and Codex runs on your own Codex account, so PostDelegate never charges for AI. Every plan starts with a 7-day free trial with no card.

Can Codex attach images or video to a Telegram post?

It can use files already in your media library, or add one from a public link. It cannot fetch files from your computer, so upload those in the app first. See MCP tools.

Do I need to give PostDelegate my Telegram password or phone number?

No. You add @PostDelegateBot to your channel or group and send a short connect command there. PostDelegate never asks for your Telegram login.

Why can't I add the bot as a channel admin on Telegram Web?

Telegram's web version does not offer that option. Open the Telegram app on your phone or computer, make @PostDelegateBot an admin of the channel, then finish connecting from PostDelegate in any browser. Groups can be connected from the web.

Telegram from other assistants

Other networks from Codex

Prefer to plan Telegram posts yourself? See the Telegram scheduler.