Content3

content3

Use the Content3 Agent API to create short-form videos, manage content libraries, submit reviews for human approval, and draft social media posts.

Setup

1. Log in to your Content3 dashboard
2. Navigate to Settings → API Keys
3. Click Create API Key — copy the key (starts with c3ak_, shown only once)
4. Store it:

mkdir -p ~/.config/content3
echo "c3ak_your_key_here" > ~/.config/content3/api_key

API Basics

Base URL: https://api.content3.app/v1

All requests need:

C3_KEY=$(cat ~/.config/content3/api_key)
curl -X GET "https://api.content3.app/v1/..." \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json"

Note: Agent API keys have scopes that control access. Default scopes: content:read, social:generate, social:drafts:read, social:drafts:write. Ask the user to grant additional scopes if needed.

Authentication

Verify your key:

curl "https://api.content3.app/v1/me" \
  -H "Authorization: Bearer $C3_KEY"

Returns: { "userId", "keyId", "keyName", "scopes": [...] }

Scopes Reference

Short-Form Video Generation

This is the primary agent workflow — generate short-form videos from various sources.

Get available options (voices, sources, aspect ratios):

curl "https://api.content3.app/v1/agents/short-form/options" \
  -H "Authorization: Bearer $C3_KEY"

Returns source types (quora, reddit, prompt, text), voice options (Kore, Puck, Charon, Fenrir, Zephyr, Aoede, Orbit, Orus), and aspect ratios (9:16, 16:9).

Generate a video from a prompt:

curl -X POST "https://api.content3.app/v1/agents/short-form/generate" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "source": {
      "type": "prompt",
      "prompt": "Explain why cats always land on their feet"
    },
    "voiceId": "Kore",
    "aspectRatio": "9:16",
    "saveToLibrary": true
  }'

Generate from a Reddit post:

curl -X POST "https://api.content3.app/v1/agents/short-form/generate" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "source": {
      "type": "reddit",
      "url": "https://reddit.com/r/..."
    },
    "voiceId": "Puck",
    "aspectRatio": "9:16"
  }'

Generate from a Quora answer:

curl -X POST "https://api.content3.app/v1/agents/short-form/generate" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "source": {
      "type": "quora",
      "url": "https://quora.com/..."
    },
    "voiceId": "Zephyr"
  }'

Generate from raw text:

curl -X POST "https://api.content3.app/v1/agents/short-form/generate" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "source": {
      "type": "text",
      "text": "Your script or content here..."
    },
    "voiceId": "Fenrir",
    "aspectRatio": "16:9"
  }'

Returns: { "success": true, "jobId": "uuid", "status": "queued", "taskName": "..." }

Render Jobs

Track the status of video generation jobs.

List render jobs:

curl "https://api.content3.app/v1/render-jobs?status=completed&limit=10" \
  -H "Authorization: Bearer $C3_KEY"

Query params: status (queued, processing, completed, failed), agent_type, job_type, limit (max 100), offset.

Get a specific job:

curl "https://api.content3.app/v1/render-jobs/{job_id}" \
  -H "Authorization: Bearer $C3_KEY"

Returns full job details including payload, status, output_url, timestamps.

Content Items

Manage your content library.

List content items:

curl "https://api.content3.app/v1/content-items?type=video&limit=20" \
  -H "Authorization: Bearer $C3_KEY"

Query params: type, limit (max 100, default 20), offset.

Returns: { "items": [{ "id", "type", "title", "description", "source_url", "thumbnail_url", "created_at" }] }

Reviews (Human-in-the-Loop)

Submit content for human review and approval before publishing.

Create a review:

curl -X POST "https://api.content3.app/v1/reviews" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "title": "Weekly video batch - Feb 18",
    "description": "5 short-form videos for review before publishing",
    "contentType": "video",
    "attachments": [
      {"url": "https://r2.example.com/video1.mp4", "label": "Cat facts video"},
      {"url": "https://r2.example.com/video2.mp4", "label": "Tech tips video"}
    ],
    "metadata": {
      "tags": ["short-form", "batch"],
      "notes": "Generated from trending Reddit posts"
    }
  }'

Content types: pdf, video, image, slides, markdown.

List reviews:

curl "https://api.content3.app/v1/reviews?status=pending&limit=10" \
  -H "Authorization: Bearer $C3_KEY"

Status values: pending, approved, rejected, needs_revision.

Get review with comments:

curl "https://api.content3.app/v1/reviews/{review_id}" \
  -H "Authorization: Bearer $C3_KEY"

Add a comment to a review:

curl -X POST "https://api.content3.app/v1/reviews/{review_id}/comments" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{"body": "Revised the thumbnail based on feedback"}'

Update Review Status

Update a review's status:

curl -X PATCH "https://api.content3.app/v1/reviews/{review_id}" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{"status": "in_review"}'

Valid transitions: pending → in_review, in_review → approved / rejected / changes_requested, changes_requested → in_review.

Returns: { "review": { "id": "uuid", "status": "in_review", "updatedAt": "..." } }

Review Revisions

Submit updated attachments when changes are requested. The platform tracks all versions.

Submit a revision:

curl -X POST "https://api.content3.app/v1/reviews/{review_id}/revisions" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "attachments": [
      {"url": "https://r2.example.com/video1-v2.mp4", "label": "Fixed background color"}
    ],
    "note": "Fixed the background color as requested"
  }'

If no revisions exist yet, revision 1 is automatically created from the current attachments (labeled "Original"). The new revision becomes the latest, and reviews.attachments is updated.

List revisions:

curl "https://api.content3.app/v1/reviews/{review_id}/revisions" \
  -H "Authorization: Bearer $C3_KEY"

Returns: { "revisions": [{ "revisionNumber": 1, "attachments": [...], "note": "Original", "agentKeyName": "...", "createdAt": "..." }, ...] }

Shareable Review Links

Generate a public share link for a review so humans can view and comment without logging in.

Create or get a share link:

curl -X POST "https://api.content3.app/v1/reviews/{review_id}/share" \
  -H "Authorization: Bearer $C3_KEY"

Returns: { "shareToken": "...", "shareUrl": "https://content3.app/review/...", "shareEnabled": true }

If a share link already exists, this returns the existing link and ensures it is enabled.

Toggle share link on/off:

curl -X PATCH "https://api.content3.app/v1/reviews/{review_id}/share" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{"enabled": false}'

When disabled, anyone visiting the share URL sees a "not found" page. Re-enable with {"enabled": true}.

The share URL can be sent to any human for on-demand feedback — no Content3 account required. Public reviewers can view the content, change the review status, and leave comments.

Promote Review to Content

After a review is approved, promote it to a content item so it can be used with social drafts.

Promote an approved review:

curl -X POST "https://api.content3.app/v1/reviews/{review_id}/promote" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "title": "Optional override title",
    "description": "Optional override description"
  }'

The request body is optional — omit fields to use the review's title/description.

Returns: { "contentItem": { "id": "uuid", "type": "video", "title": "...", "sourceUrl": "...", "status": "ready", "reviewId": "uuid", "createdAt": "..." } }

Returns 201 on first promote, 200 if already promoted (idempotent). Returns 422 if the review is not yet approved. Requires scopes: reviews:read + content:write.

Social Media

Create drafts and generate AI-powered social media content.

List connected social accounts:

curl "https://api.content3.app/v1/social/connections" \
  -H "Authorization: Bearer $C3_KEY"

Returns connections for: youtube, tiktok, instagram, pinterest, threads.

Generate AI social content for a content item:

curl -X POST "https://api.content3.app/v1/social/generate-content" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contentItemId": "content-item-uuid",
    "platforms": ["tiktok", "youtube"],
    "userPrompt": "Make it engaging and use trending hashtags"
  }'

Create a social media draft (format A — canonical):

curl -X POST "https://api.content3.app/v1/social/drafts" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contentItemId": "content-item-uuid",
    "title": "Why cats always land on their feet",
    "description": "The science behind cat reflexes",
    "hashtags": ["cats", "science", "shorts"],
    "platforms": [
      {
        "connectionId": "connection-uuid",
        "platformTitle": "Cat Physics Explained",
        "platformDescription": "You won'''t believe this! #cats #science"
      }
    ]
  }'

Create a social media draft (format B — shorthand):

curl -X POST "https://api.content3.app/v1/social/drafts" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contentItemId": "content-item-uuid",
    "title": "Why cats always land on their feet",
    "caption": "The science behind cat reflexes #cats #science",
    "hashtags": ["cats", "science", "shorts"],
    "platforms": ["tiktok", "youtube"],
    "connectionIds": ["connection-uuid-1", "connection-uuid-2"]
  }'

Both formats are accepted. caption maps to description if description is not provided. Use GET /v1/social/connections to get valid connection IDs.

List drafts:

curl "https://api.content3.app/v1/social/drafts?limit=20" \
  -H "Authorization: Bearer $C3_KEY"

Publish a draft:

curl -X POST "https://api.content3.app/v1/social/drafts/{draft_id}/publish" \
  -H "Authorization: Bearer $C3_KEY"

Enqueues the draft for publishing to all configured platforms. Only drafts with status draft can be published. Returns 422 if the post is not a draft or is missing content/platforms.

Returns: { "postId": "uuid", "jobId": "uuid", "status": "pending" }

Poll GET /render-jobs/{jobId} to track publishing progress.

Products

Manage products for content generation.

Create a product:

curl -X POST "https://api.content3.app/v1/products" \
  -H "Authorization: Bearer $C3_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "My SaaS Product",
    "description": "A tool that helps you do X",
    "url": "https://myproduct.com"
  }'

List products:

curl "https://api.content3.app/v1/products?limit=20" \
  -H "Authorization: Bearer $C3_KEY"

Common Workflows

Generate and Review a Video

1. Generate a video: POST /agents/short-form/generate
2. Poll job status: GET /render-jobs/{jobId} until status: "completed"
3. Submit for review: POST /reviews with the video URL from the completed job
4. Create a share link: POST /reviews/{reviewId}/share — send the shareUrl to a human for feedback
5. Check review status: GET /reviews/{reviewId} — wait for approved
6. If changes_requested: fix the content and submit a revision with POST /reviews/{reviewId}/revisions, then go back to step 5
7. Promote to content: POST /reviews/{reviewId}/promote — creates a content item from the approved review
8. Create social draft: POST /social/drafts with the contentItem.id from step 7
9. Publish draft: POST /social/drafts/{draftId}/publish — enqueues the draft for publishing

Batch Content Generation

1. Get short-form options: GET /agents/short-form/options
2. Generate multiple videos with different sources/voices
3. Monitor all jobs: GET /render-jobs?status=processing
4. Submit a batch review with all completed video URLs
5. After approval, promote each review: POST /reviews/{reviewId}/promote
6. Generate social content and create drafts for each platform using the contentItem.id from step 5
7. Publish each draft: POST /social/drafts/{draftId}/publish

Notes

• Job IDs are UUIDs returned when creating render jobs
• Video generation is async — poll /render-jobs/{id} for completion
• Review statuses can be set by humans in the dashboard or via the public share link
• Agents can generate share URLs with POST /reviews/{id}/share and send them to humans for on-demand feedback
• Rate limits apply — avoid rapid-fire requests
• The saveToLibrary flag on video generation automatically creates a content item
• Default aspect ratio is 9:16 (vertical/portrait) for short-form content
• Voice selection affects the TTS narration of generated videos