Public, short-lived media URLs for agents posting to Instagram, Threads and Facebook.
Connect Remote server
claude mcp add --transport http postcache https://postcache.dev/mcp --header "Authorization: Bearer <YOUR_API_KEY>"
{
"mcpServers": {
"postcache": {
"url": "https://postcache.dev/mcp",
"headers": {
"Authorization": "Bearer <YOUR_API_KEY>"
}
}
}
}
{
"servers": {
"postcache": {
"type": "http",
"url": "https://postcache.dev/mcp",
"headers": {
"Authorization": "Bearer <YOUR_API_KEY>"
}
}
}
}
Settings > Connectors > Add custom connector
URL: https://postcache.dev/mcp
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools 4 found in our last check
upload_mediaUpload an image or video for a social platform. Returns a public URL that passes the platform media rules, or the problems with fixes. With convert, a fixable file comes back as status "converting": poll get_media until status is "ready" (url set) or "failed". Give the URL to th…
check_mediaCheck a file against a platform without storing it. With convert, also says whether conversion can fix it.
get_mediaStatus (converting, ready, failed), URL, expiry and fetch count of an uploaded file.
delete_mediaDelete an uploaded file now (call after the post is published).
Headers
| Name | Description |
|---|---|
AuthorizationRequired, secret | Bearer pc_live_... API key |
Details
| Endpoint | https://postcache.dev/mcp (Streamable HTTP) |
| First published | 9 Oct 2026 |
| Last updated | 9 Oct 2026 |
| Registry name | dev.postcache/postcache |
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