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x-twitter - Universal X/Twitter API Skill

Constructs and executes X API v2 calls inline based on what the user wants. No scripts needed.

API version: v2 Base URL: https://api.twitter.com/2

Requires an X Developer App with OAuth 1.0a User Context credentials. Free tier supports posting, reading own timeline, and basic lookups. Elevated/Pro tier required for search and higher rate limits.

STEP 1 - Load Credentials

Credentials are stored in ~/.config/x-twitter/credentials.json.

$cfg           = Get-Content "$HOME/.config/x-twitter/credentials.json" -Raw | ConvertFrom-Json
$apiKey        = $cfg.X_API_KEY
$apiSecret     = $cfg.X_API_SECRET
$accessToken   = $cfg.X_ACCESS_TOKEN
$accessSecret  = $cfg.X_ACCESS_SECRET

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

One-time setup:

1. Go to X Developer Portal
2. Create a Project and App (or use existing)
3. Under App Settings -> User authentication settings: enable OAuth 1.0a with Read and Write permissions
4. Go to App Keys and Tokens -> Generate Access Token and Secret (for your own account)
5. Save all four values:

@{
    X_API_KEY       = "your_api_key"
    X_API_SECRET    = "your_api_secret"
    X_ACCESS_TOKEN  = "your_access_token"
    X_ACCESS_SECRET = "your_access_token_secret"
} | ConvertTo-Json | Set-Content "$HOME/.config/x-twitter/credentials.json" -Encoding UTF8

Restrict file permissions immediately after saving:

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

Never commit this file to version control. It contains long-lived secrets. Rotate X_ACCESS_TOKEN and X_ACCESS_SECRET periodically and immediately if the host is ever compromised. X_API_KEY and X_API_SECRET are app-level credentials - keep them permanently but treat as sensitive. This skill makes no external calls other than to api.twitter.com. No data is forwarded to third parties.

STEP 2 - Figure Out the API Call

X API v2 uses OAuth 1.0a for user-context actions (post, delete, like, retweet) and Bearer Token for read-only public data. This skill uses OAuth 1.0a for all calls (covers both read and write).

OAuth 1.0a Signing Helper

All requests require an OAuth 1.0a Authorization header. Use this helper:

function Get-OAuthHeader {
    param($method, $url, $apiKey, $apiSecret, $accessToken, $accessSecret, [hashtable]$params = @{})
    $nonce     = [System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes([System.Guid]::NewGuid().ToString("N")))
    $timestamp = [int][double]::Parse(([datetime]::UtcNow - [datetime]"1970-01-01").TotalSeconds)
    $oauthParams = @{
        oauth_consumer_key     = $apiKey
        oauth_nonce            = $nonce
        oauth_signature_method = "HMAC-SHA1"
        oauth_timestamp        = $timestamp
        oauth_token            = $accessToken
        oauth_version          = "1.0"
    }
    # Merge all params for signature base
    $allParams = @{}
    $oauthParams.GetEnumerator() | ForEach-Object { $allParams[$_.Key] = $_.Value }
    $params.GetEnumerator() | ForEach-Object { $allParams[$_.Key] = $_.Value }
    # Build signature base string
    $sortedParams = ($allParams.GetEnumerator() | Sort-Object Key | ForEach-Object {
        "$([Uri]::EscapeDataString($_.Key))=$([Uri]::EscapeDataString($_.Value))"
    }) -join "&"
    $baseString = "$method&$([Uri]::EscapeDataString($url))&$([Uri]::EscapeDataString($sortedParams))"
    # Sign
    $signingKey = "$([Uri]::EscapeDataString($apiSecret))&$([Uri]::EscapeDataString($accessSecret))"
    $hmac = New-Object System.Security.Cryptography.HMACSHA1
    $hmac.Key = [System.Text.Encoding]::ASCII.GetBytes($signingKey)
    $signature = [System.Convert]::ToBase64String($hmac.ComputeHash([System.Text.Encoding]::ASCII.GetBytes($baseString)))
    $oauthParams["oauth_signature"] = $signature
    # Build header
    $headerParts = $oauthParams.GetEnumerator() | Sort-Object Key | ForEach-Object {
        "$([Uri]::EscapeDataString($_.Key))=`"$([Uri]::EscapeDataString($_.Value))`""
    }
    return "OAuth $($headerParts -join ', ')"
}

Common Endpoints

API Call Patterns

GET:

$url    = "https://api.twitter.com/2/ENDPOINT"
$authHeader = Get-OAuthHeader -method "GET" -url $url -apiKey $apiKey -apiSecret $apiSecret -accessToken $accessToken -accessSecret $accessSecret
$result = Invoke-RestMethod -Uri $url -Headers @{ Authorization = $authHeader } -ErrorAction Stop

GET with query params (include in signature):

$url    = "https://api.twitter.com/2/tweets/search/recent"
$qp     = @{ query = "from:username"; max_results = "10" }
$authHeader = Get-OAuthHeader -method "GET" -url $url -apiKey $apiKey -apiSecret $apiSecret -accessToken $accessToken -accessSecret $accessSecret -params $qp
$qs     = ($qp.GetEnumerator() | ForEach-Object { "$($_.Key)=$([Uri]::EscapeDataString($_.Value))" }) -join "&"
$result = Invoke-RestMethod -Uri "$url`?$qs" -Headers @{ Authorization = $authHeader } -ErrorAction Stop

POST (JSON body):

$url    = "https://api.twitter.com/2/tweets"
$body   = @{ text = "Hello from OpenClaw!" } | ConvertTo-Json
$authHeader = Get-OAuthHeader -method "POST" -url $url -apiKey $apiKey -apiSecret $apiSecret -accessToken $accessToken -accessSecret $accessSecret
$result = Invoke-RestMethod -Uri $url -Method POST -Headers @{ Authorization = $authHeader; "Content-Type" = "application/json" } -Body $body -ErrorAction Stop
Write-Host "Posted tweet ID: $($result.data.id)"

DELETE:

$url    = "https://api.twitter.com/2/tweets/{id}"
$authHeader = Get-OAuthHeader -method "DELETE" -url $url -apiKey $apiKey -apiSecret $apiSecret -accessToken $accessToken -accessSecret $accessSecret
$result = Invoke-RestMethod -Uri $url -Method DELETE -Headers @{ Authorization = $authHeader } -ErrorAction Stop

Get Own User ID (needed for user-context endpoints)

$url    = "https://api.twitter.com/2/users/me"
$authHeader = Get-OAuthHeader -method "GET" -url $url -apiKey $apiKey -apiSecret $apiSecret -accessToken $accessToken -accessSecret $accessSecret
$me     = Invoke-RestMethod -Uri $url -Headers @{ Authorization = $authHeader } -ErrorAction Stop
$userId = $me.data.id

Post with Media (image attachment)

# Step 1: Upload media via v1.1 endpoint (media upload is not on v2 yet)
$mediaUrl   = "https://upload.twitter.com/1.1/media/upload.json"
$fileBytes  = [System.IO.File]::ReadAllBytes($imagePath)
$b64        = [System.Convert]::ToBase64String($fileBytes)
$uploadAuth = Get-OAuthHeader -method "POST" -url $mediaUrl -apiKey $apiKey -apiSecret $apiSecret -accessToken $accessToken -accessSecret $accessSecret
$upload     = Invoke-RestMethod -Uri $mediaUrl -Method POST -Headers @{ Authorization = $uploadAuth; "Content-Type" = "application/json" } `
    -Body (@{ media_data = $b64 } | ConvertTo-Json) -ErrorAction Stop
$mediaId    = $upload.media_id_string
# Step 2: Post tweet with media
$tweetUrl   = "https://api.twitter.com/2/tweets"
$tweetAuth  = Get-OAuthHeader -method "POST" -url $tweetUrl -apiKey $apiKey -apiSecret $apiSecret -accessToken $accessToken -accessSecret $accessSecret
$result     = Invoke-RestMethod -Uri $tweetUrl -Method POST `
    -Headers @{ Authorization = $tweetAuth; "Content-Type" = "application/json" } `
    -Body (@{ text = $caption; media = @{ media_ids = @($mediaId) } } | ConvertTo-Json -Depth 3) -ErrorAction Stop
Write-Host "Posted tweet with media ID: $($result.data.id)"

STEP 3 - Handle Errors

try {
    # ... API call ...
} catch {
    $err    = $_.ErrorDetails.Message | ConvertFrom-Json -ErrorAction SilentlyContinue
    $status = $_.Exception.Response.StatusCode.value__
    $title  = $err.title
    $detail = $err.detail
    Write-Host "HTTP $status - $title : $detail"
}

Rate Limits (Free Tier)

If rate limited: read the x-rate-limit-reset response header (Unix timestamp) and tell the user when they can retry.

Access Tiers

AGENT RULES

• Always load credentials first. If missing or incomplete, guide setup.
• Always use OAuth 1.0a via the Get-OAuthHeader helper - never send raw tokens in query strings.
• Get own user ID first when calling user-context endpoints (/users/{id}/...) - use /users/me.
• Never embed tokens as literals - read all four credential fields fresh from disk at runtime.
• Rotate credentials if the host is ever compromised: regenerate Access Token and Secret in Developer Portal.
• Rate limits: on HTTP 429, read x-rate-limit-reset header and tell the user the exact retry time.
• Free tier restrictions: search requires Basic tier; if user gets 453 "Access to endpoint denied", tell them the required tier and link to developer.twitter.com/en/portal/products.
• Media upload: uses v1.1 upload endpoint (upload.twitter.com) - this is intentional and expected; it is still Twitter/X infrastructure. State this if the user asks.
• Least-privilege: instruct user to enable only Read and Write in app settings; do not request DM permissions unless explicitly needed.
• All API calls go to api.twitter.com and upload.twitter.com only - both are X/Twitter infrastructure. No external forwarding, no third-party services.
• Construct API calls inline from user intent - do not look for script files.
• On any error: parse HTTP status, map to the table above, tell the user exactly what to do.
• Duplicate tweet: if user tries to post the same text twice, tell them X blocks duplicate content and ask them to change the wording.