Instagram Page

Instagram Business manager: post photos, reels, stories & get insights. Requires: powershell/pwsh. Reads ~/.config/instagram-page/credentials.json (IG_ACCESS...

instagram-page - Universal Instagram Graph API Skill

Constructs and executes Instagram Graph API calls inline based on what the user wants. No scripts needed.

Requires an Instagram Business or Creator account linked to a Facebook Page. Personal Instagram accounts are not supported by the Instagram Graph API.

API version: v25.0 Base URL: https://graph.facebook.com/v25.0

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STEP 1 - Load Credentials

Credentials are stored in ~/.config/instagram-page/credentials.json.

$cfg      = Get-Content "$HOME/.config/instagram-page/credentials.json" -Raw | ConvertFrom-Json
$token    = $cfg.IG_ACCESS_TOKEN
$igUserId = $cfg.IG_USER_ID

If the file does not exist, guide setup. Required fields:

Field	Purpose
IG_ACCESS_TOKEN	Long-lived User access token - used for all API calls
IG_USER_ID	Instagram-scoped Business/Creator User ID (numeric)
IG_APP_ID	Meta App ID - only needed during token exchange
IG_APP_SECRET	Meta App Secret - only needed during token exchange

Prerequisites:

1. Instagram account must be a Business or Creator account
2. The Instagram account must be linked to a Facebook Page
3. A Meta App with instagram_basic, instagram_content_publish, instagram_manage_comments, instagram_manage_insights permissions

One-time token exchange setup:

# Provide: $appId, $appSecret, $shortToken (from Graph API Explorer with IG permissions), $fbPageId
# 1. Exchange short-lived token for long-lived user token (valid 60 days)
$r1 = Invoke-RestMethod "https://graph.facebook.com/oauth/access_token?grant_type=fb_exchange_token&client_id=$appId&client_secret=$appSecret&fb_exchange_token=$shortToken"
$longToken = $r1.access_token
# 2. Get Instagram Business Account ID linked to your Facebook Page
$r2 = Invoke-RestMethod "https://graph.facebook.com/v25.0/$fbPageId?fields=instagram_business_account&access_token=$longToken"
$igUserId = $r2.instagram_business_account.id
# 3. Save - only these four fields
@{
    IG_USER_ID      = $igUserId
    IG_ACCESS_TOKEN = $longToken
    IG_APP_ID       = $appId
    IG_APP_SECRET   = $appSecret
} | ConvertTo-Json | Set-Content "$HOME/.config/instagram-page/credentials.json" -Encoding UTF8

Restrict file permissions immediately after saving:

# Windows
icacls "$HOME/.config/instagram-page/credentials.json" /inheritance:r /grant:r "$($env:USERNAME):(R,W)"
# macOS / Linux
# chmod 600 ~/.config/instagram-page/credentials.json

Refresh token before it expires (every ~50 days):

$r = Invoke-RestMethod "https://graph.facebook.com/oauth/access_token?grant_type=ig_refresh_token&access_token=$token"
$cfg.IG_ACCESS_TOKEN = $r.access_token
$cfg | ConvertTo-Json | Set-Content "$HOME/.config/instagram-page/credentials.json" -Encoding UTF8

Delete IG_APP_SECRET from credentials.json after setup - it is not needed for API calls. Never commit this file to version control. It contains long-lived secrets. This skill makes no external calls other than to graph.facebook.com. No data is forwarded to third parties.

---

STEP 2 - Figure Out the API Call

Instagram publishing uses a two-step flow for most media types:

1. Create a media container - uploads/registers the media, returns a creation_id
2. Publish the container - makes it live on Instagram

Common Endpoints

What user wants	Method	Endpoint
Post single photo	POST x2	Step 1: /$igUserId/media Step 2: /$igUserId/media_publish
Post reel (video)	POST x2	Step 1: /$igUserId/media (media_type=REELS) Step 2: /$igUserId/media_publish
Post story	POST x2	Step 1: /$igUserId/media (media_type=STORIES) Step 2: /$igUserId/media_publish
Post carousel	POST x3+	Step 1: item containers Step 2: carousel container Step 3: publish
Get recent media	GET	/$igUserId/media?fields=id,caption,media_type,timestamp,like_count,comments_count
Get account info	GET	/$igUserId?fields=username,name,biography,followers_count,media_count
Get comments	GET	/{media-id}/comments?fields=text,username,timestamp
Reply to comment	POST	/{comment-id}/replies body: message
Delete comment	DELETE	/{comment-id}
Hide/show comment	POST	/{comment-id} body: hide=true/false
Get media insights	GET	/{media-id}/insights?metric=impressions,reach,likes,comments,shares,saved
Get account insights	GET	/$igUserId/insights?metric=impressions,reach,follower_count&period=day
Get hashtag ID	GET	ig/hashtags?user_id=$igUserId&q=hashtag
Search hashtag media	GET	/{hashtag-id}/top_media?user_id=$igUserId&fields=id,caption,media_type
Get tagged media	GET	/$igUserId/tags?fields=caption,media_url,timestamp

API Call Patterns

GET:

$result = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/ENDPOINT?access_token=$token" -ErrorAction Stop

POST (form body):

$result = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/ENDPOINT" -Method POST `
    -Body @{ field1="value1"; field2="value2"; access_token=$token } -ErrorAction Stop

DELETE:

$result = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/{id}?access_token=$token" -Method DELETE -ErrorAction Stop

Publishing Patterns

Single photo post:

# image_url must be publicly accessible
$container = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/$igUserId/media" -Method POST `
    -Body @{ image_url=$imageUrl; caption=$caption; access_token=$token } -ErrorAction Stop
$post = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/$igUserId/media_publish" -Method POST `
    -Body @{ creation_id=$container.id; access_token=$token } -ErrorAction Stop
Write-Host "Published post ID: $($post.id)"

Reel post (video):

# video_url must be publicly accessible MP4 (H.264, AAC audio, max 1GB, max 60s for feed)
$container = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/$igUserId/media" -Method POST `
    -Body @{ media_type="REELS"; video_url=$videoUrl; caption=$caption; share_to_feed="true"; access_token=$token } -ErrorAction Stop
# Poll for processing status - video upload is async
do {
    Start-Sleep -Seconds 5
    $status = Invoke-RestMethod "https://graph.facebook.com/v25.0/$($container.id)?fields=status_code&access_token=$token"
} while ($status.status_code -eq "IN_PROGRESS")
if ($status.status_code -ne "FINISHED") { throw "Video processing failed: $($status.status_code)" }
$post = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/$igUserId/media_publish" -Method POST `
    -Body @{ creation_id=$container.id; access_token=$token } -ErrorAction Stop
Write-Host "Published reel ID: $($post.id)"

Carousel post (2-10 images/videos):

# Create item containers for each media URL
$itemIds = @()
foreach ($url in $mediaUrls) {
    $item = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/$igUserId/media" -Method POST `
        -Body @{ image_url=$url; is_carousel_item="true"; access_token=$token } -ErrorAction Stop
    $itemIds += $item.id
}
# Create carousel container
$carousel = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/$igUserId/media" -Method POST `
    -Body @{ media_type="CAROUSEL"; children=($itemIds -join ","); caption=$caption; access_token=$token } -ErrorAction Stop
# Publish
$post = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/$igUserId/media_publish" -Method POST `
    -Body @{ creation_id=$carousel.id; access_token=$token } -ErrorAction Stop
Write-Host "Published carousel ID: $($post.id)"

Story:

$container = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/$igUserId/media" -Method POST `
    -Body @{ media_type="STORIES"; image_url=$imageUrl; access_token=$token } -ErrorAction Stop
$post = Invoke-RestMethod -Uri "https://graph.facebook.com/v25.0/$igUserId/media_publish" -Method POST `
    -Body @{ creation_id=$container.id; access_token=$token } -ErrorAction Stop
Write-Host "Published story ID: $($post.id)"

Image/video URLs must be publicly accessible - local files are not accepted by the API. Upload to a public server or CDN before calling. Instagram limits ~50 API-published posts per 24h.

---

STEP 3 - Handle Errors

try {
    # ... API call ...
} catch {
    $err     = $_.ErrorDetails.Message | ConvertFrom-Json -ErrorAction SilentlyContinue
    $code    = $err.error.code
    $subcode = $err.error.error_subcode
    $msg     = $err.error.message
    Write-Host "Error $code/$subcode : $msg"
}

Code	Subcode	Meaning	Fix
100	-	Invalid parameter	Check parameter values; image/video URL must be public
102	-	Session expired	Refresh token - run the refresh snippet in STEP 1
190	460	Token expired (60 days)	Refresh token - run the refresh snippet in STEP 1
190	467	Invalid token	Re-run full setup to get a new token
200	-	Permission denied	Add the missing permission to your Meta App and regenerate token
10	-	Permission denied (IG scope)	Add permission listed in error.message; re-run setup
24	-	No linked IG Business account	Link Instagram account to your Facebook Page in Instagram settings
32	-	Page request limit reached	Wait and retry; hourly rate limit hit
368	-	Temporarily blocked	Wait and retry; account may be temporarily restricted
9007	-	Publishing limit reached	Instagram limits ~50 API-published posts per 24h
2207026	-	Video format invalid	MP4 required; H.264 video, AAC audio, max 1GB, 60s for feed reels

Permissions Reference

Permission	Required for
instagram_basic	Read account info, media list
instagram_content_publish	Create and publish posts, reels, stories, carousels
instagram_manage_comments	Read, reply to, hide, delete comments
instagram_manage_insights	Access account and media insights
pages_show_list	List Facebook Pages (needed during IG account lookup)
pages_read_engagement	Read Facebook Page linked to Instagram account

If a permission is missing:

1. Go to Meta for Developers
2. Select your app -> Permissions and Features
3. Add the required permission
4. Regenerate token via Graph API Explorer with the permission checked
5. Re-run setup with the new token

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AGENT RULES

• Always load credentials first. If missing or incomplete, guide setup.
• Only use IG_ACCESS_TOKEN and IG_USER_ID for API calls. IG_APP_ID and IG_APP_SECRET are for token exchange only.
• Delete IG_APP_SECRET from credentials.json after token exchange - it is not needed for API calls.
• Token expiry: IG_ACCESS_TOKEN expires every 60 days. Remind the user to refresh before expiry using the refresh snippet in STEP 1. Rotate immediately if the host is ever compromised.
• Two-step publishing: always create a container first, then publish. Never try to publish in a single API call.
• Public URLs only: image/video URLs must be publicly accessible. If the user provides a local file path, tell them to upload it to a public server or CDN first.
• Reel processing: poll status_code until FINISHED before publishing - video processing is async and can take minutes.
• Least-privilege: only request the permissions the use case needs.
• All API calls go to graph.facebook.com only. No external forwarding, no third-party services.
• Construct API calls inline from user intent - do not look for script files.
• On any error: parse error.code + error.error_subcode, map to the table above, tell the user exactly what to do.
• If a permission is missing: name it, link to Meta for Developers, say to re-run setup.
• Business/Creator only: if the user has a personal Instagram account, tell them to convert it to Business or Creator in Instagram settings first - personal accounts are not supported by the Instagram Graph API.