* Add resemble-detect skill Deepfake detection and media safety skill using Resemble AI — detects AI-generated audio, images, video, and text with confidence scores, traces audio source platforms, applies and reads watermarks, verifies speaker identity, and extracts media intelligence (speaker, emotion, misinformation signals). Packaged as SKILL.md + LICENSE (Apache-2.0). Generated docs updated via npm start per CONTRIBUTING.md. * resemble-detect: trim body under 500 lines + add compatibility Moves detailed request/response schemas from SKILL.md into references/api-reference.md, bringing the SKILL body from 557 to 282 lines (validator hard cap is 500). Core decision-making content — capability decision tree, score interpretation, workflows, red flags — stays in the body where the agent needs it at query time. Also adds a compatibility field to frontmatter per review feedback: surfaces the RESEMBLE_API_KEY requirement and the public-HTTPS-URL constraint upfront. * Fix resemble-detect skill metadata
16 KiB
name, description, license, compatibility
| name | description | license | compatibility |
|---|---|---|---|
| resemble-detect | Deepfake detection and media safety — detect AI-generated audio, images, video, and text, trace synthesis sources, apply watermarks, verify speaker identity, and analyze media intelligence using Resemble AI | Apache-2.0 | Requires a Resemble AI API key (https://app.resemble.ai) set as RESEMBLE_API_KEY. All media must be accessible via public HTTPS URLs — local file paths are not supported except for text detection. |
Resemble Detect — Deepfake Detection & Media Safety
Analyze audio, image, video, and text for synthetic manipulation, AI-generated content, watermarks, speaker identity, and media intelligence using the Resemble AI platform.
Core Principle — THE IRON LAW
"NEVER DECLARE MEDIA AS REAL OR FAKE WITHOUT A COMPLETED DETECTION RESULT."
Do not guess, infer, or speculate about media authenticity. Every authenticity claim must be backed by a completed Resemble detect job with a returned label, score, and status: "completed". If the detection is still processing, wait. If it failed, say so — do not substitute your own judgment.
When to Use
Use this skill whenever the user's request involves any of these:
- Checking if audio, video, image, or text is AI-generated or manipulated
- Detecting deepfakes in any media format
- Verifying media authenticity or provenance
- Identifying which AI platform synthesized audio (source tracing)
- Applying or detecting watermarks on media
- Analyzing media for speaker info, emotion, transcription, or misinformation
- Asking natural-language questions about detection results
- Matching or verifying speaker identity against known voice profiles
- Detecting AI-generated or machine-written text
- Any mention of: "deepfake", "fake detection", "synthetic media", "voice verification", "watermark", "media forensics", "authenticity check", "source tracing", "is this real", "AI-written text", "text detection"
Do NOT use for text-to-speech generation, voice cloning, or speech-to-text transcription — those are separate Resemble capabilities.
Capability Decision Tree
| User wants to... | Use this | API endpoint |
|---|---|---|
| Check if media is AI-generated / deepfake | Deepfake Detection | POST /detect |
| Know which AI platform made fake audio | Audio Source Tracing | POST /detect with flag |
| Get speaker info, emotion, transcription from media | Intelligence | POST /intelligence |
| Ask questions about a completed detection | Detect Intelligence | POST /detects/{uuid}/intelligence |
| Apply an invisible watermark to media | Watermark Apply | POST /watermark/apply |
| Check if media contains a watermark | Watermark Detect | POST /watermark/detect |
| Verify a speaker's identity against known profiles | Identity Search | POST /identity/search |
| Check if text is AI-generated | Text Detection | POST /text_detect |
| Create a voice identity profile for future matching | Identity Create | POST /identity |
When multiple capabilities apply (e.g., user wants deepfake detection AND intelligence), combine them in a single POST /detect call using the intelligence: true flag rather than making separate requests.
Required Setup
- API Key: Bearer token from the Resemble AI dashboard (set as
RESEMBLE_API_KEY) - Base URL:
https://app.resemble.ai/api/v2 - Auth Header:
Authorization: Bearer <RESEMBLE_API_KEY> - Media Requirement: All media must be at a publicly accessible HTTPS URL
If the user provides a local file path instead of a URL, inform them the file must be hosted at a public HTTPS URL first. Do not attempt to upload local files to the API. (Exception: POST /text_detect accepts text content inline.)
MCP Tools Available
When the Resemble MCP server is connected, use these tools instead of raw API calls:
| Tool | Purpose |
|---|---|
resemble_docs_lookup |
Get comprehensive docs for any detect sub-topic |
resemble_search |
Search across all documentation |
resemble_api_endpoint |
Get exact OpenAPI spec for any endpoint |
resemble_api_search |
Find endpoints by keyword |
resemble_get_page |
Read specific documentation pages |
resemble_list_topics |
List all available topics |
Tool usage pattern: Use resemble_docs_lookup with topic "detect" to get the full picture, then resemble_api_endpoint for exact request/response schemas before making API calls.
Full API Reference
Detailed request/response schemas for every endpoint are in references/api-reference.md. Consult it before making any API call to verify exact parameter names and response shapes. The sections below cover decision-making; the reference covers exact field formats.
Phase 1: Deepfake Detection
The core capability. Submit audio, image, or video for AI-generated content analysis via POST /detect.
Key flags to consider:
visualize: true— generate heatmap/visualization artifactsintelligence: true— run multimodal intelligence alongside detection (saves a round-trip)audio_source_tracing: true— identify which AI platform synthesized fake audio (only fires on"fake"audio)use_reverse_search: true— enable reverse image search (image only)zero_retention_mode: true— auto-delete media after analysis (for sensitive content)
Detection is asynchronous. Poll GET /detect/{uuid} at 2s → 5s → 10s intervals until status is "completed" or "failed". Most complete in 10–60 seconds.
Supported formats: Audio (WAV, MP3, OGG, M4A, FLAC) · Video (MP4, MOV, AVI, WMV) · Image (JPG, PNG, GIF, WEBP)
Reading Results
- Audio — verdict in
metrics— uselabelandaggregated_score - Image — verdict in
image_metrics— uselabelandscore;iflhas an Invisible Frequency Layer heatmap - Video — verdict in
video_metrics— hierarchical tree of frame/segment results; video-with-audio returns bothmetricsandvideo_metrics
See references/api-reference.md for full response schemas.
Interpreting Scores
| Score Range | Interpretation |
|---|---|
| 0.0 – 0.3 | Strong indication of authentic/real media |
| 0.3 – 0.5 | Inconclusive — recommend additional analysis |
| 0.5 – 0.7 | Likely synthetic — flag for review |
| 0.7 – 1.0 | High confidence synthetic/AI-generated |
Always present scores with context. Say "The detection returned a score of 0.87, indicating high confidence that this audio is AI-generated" — never just "it's fake."
Phase 2: Intelligence — Media Analysis
Rich structured insights about media: speaker info, emotion, transcription, translation, misinformation, abnormalities.
Two ways to run Intelligence:
- Combined with detection — add
intelligence: truetoPOST /detect(preferred; one call) - Standalone —
POST /intelligencewith a URL (when you only need analysis, not a deepfake verdict)
Audio/video structured fields include: speaker_info, language, dialect, emotion, speaking_style, context, message, abnormalities, transcription, translation, misinformation.
Image structured fields include: scene_description, subjects, authenticity_analysis, context_and_setting, abnormalities, misinformation.
Detect Intelligence — Ask Questions About Results
After a detection completes, ask natural-language questions via POST /detects/{detect_uuid}/intelligence with { "query": "..." }. Returns a question UUID — poll GET /detects/{detect_uuid}/intelligence/{question_uuid} until completed.
Good questions to suggest:
- "Summarize the detection results in plain language"
- "What specific indicators suggest this is AI-generated?"
- "How do the audio and video detection results differ?"
- "What is the confidence level and what does it mean?"
- "Are there any inconsistencies in the analysis?"
Prerequisite: The detection must have status: "completed". Submitting a question against a processing or failed detection returns 422.
See references/api-reference.md for full parameters.
Phase 3: Audio Source Tracing
When audio is labeled "fake", identify which AI platform generated it.
Enable it by setting audio_source_tracing: true in the POST /detect request. Result appears in the detection response under audio_source_tracing.label.
Known labels: resemble_ai, elevenlabs, real, and others as the model expands.
Important: Source tracing only runs on audio labeled "fake". Real audio produces no source tracing result.
Standalone queries: GET /audio_source_tracings and GET /audio_source_tracings/{uuid}.
Phase 4: Watermarking
Apply invisible watermarks to media for provenance tracking, or detect existing watermarks.
- Apply:
POST /watermark/applywithurl, optionalstrength(0.0–1.0), optionalcustom_message. AddPrefer: waitfor synchronous response, or pollGET /watermark/apply/{uuid}/result. Response includeswatermarked_mediaURL. - Detect:
POST /watermark/detectwithurl. Audio returns{ has_watermark, confidence }; image/video returns{ has_watermark }.
See references/api-reference.md for exact parameter rules.
Phase 5: Identity — Speaker Verification (Beta)
Create voice identity profiles and match incoming audio against them.
Beta feature — requires joining the preview program. Inform the user if they encounter access errors.
- Create profile:
POST /identitywith{ audio_url, name } - Search:
POST /identity/searchwith{ audio_url, top_k }
Response returns ranked matches with confidence (higher = stronger) and distance (lower = closer match).
See references/api-reference.md for full schemas.
Phase 6: Text Detection
Detect whether text content is AI-generated or human-written via POST /text_detect.
Beta feature — requires the
detect_beta_userrole or a billing plan that includes thedfd_textproduct.
Key parameters:
text(required, max 100,000 chars)threshold(default 0.5)privacy_mode: true— text content not stored after analysiscallback_url— async notification webhook
Add Prefer: wait for synchronous response, or poll GET /text_detect/{uuid}. Response includes prediction ("ai" or "human") and confidence (0.0–1.0).
See references/api-reference.md for full schema and callback format.
Recommended Workflows
Full Media Forensics (Most Thorough)
For a comprehensive analysis, combine all capabilities:
- Submit detection with all flags enabled:
{ "url": "https://example.com/suspect.mp4", "visualize": true, "intelligence": true, "audio_source_tracing": true, "use_reverse_search": true } - Poll until
status: "completed" - Read
metrics/image_metrics/video_metricsfor the verdict - Read
intelligence.descriptionfor structured media analysis - If audio labeled
"fake", checkaudio_source_tracing.labelfor the source platform - Ask follow-up questions via Detect Intelligence if anything needs clarification
- Check for watermarks via
POST /watermark/detectif provenance is relevant
Quick Authenticity Check (Fastest)
- Submit minimal detection:
{ "url": "..." } - Poll until complete
- Check
labelandaggregated_score(audio) orlabelandscore(image/video) - Report result with score context
Provenance Pipeline (Content Creators)
- Apply watermark to original content:
POST /watermark/apply - Distribute watermarked media
- Later, verify provenance:
POST /watermark/detectagainst any copy
Red Flags — Stop and Reassess
- Declaring authenticity without a detection result — Never say media is real or fake based on visual/auditory inspection alone
- Ignoring the score and reporting only the label — A
"fake"label with score 0.51 means something very different from score 0.95 - Submitting local file paths to the API — The API requires publicly accessible HTTPS URLs (does not apply to text detection)
- Sending text longer than 100,000 characters to text detection — Split into chunks or inform the user of the limit
- Polling too aggressively — Start at 2s intervals, back off exponentially; do not loop at <1s
- Asking Detect Intelligence questions before detection completes — Results in 422 error
- Expecting source tracing on "real" audio — Source tracing only runs on audio labeled
"fake" - Treating beta features (Identity, Text Detection) as production-ready — Warn users about beta status
- Ignoring
zero_retention_modefor sensitive media — Always suggest this flag when the user indicates the media is sensitive or private - Making multiple separate API calls when flags can combine — Use
intelligence: trueandaudio_source_tracing: trueon the detection call instead of separate requests
Response Presentation Guidelines
When presenting results to users:
- Lead with the verdict — "The detection indicates this audio is likely AI-generated (score: 0.87)"
- Provide score context — Use the score interpretation table above
- Mention limitations — Detection is probabilistic, not absolute proof
- Include actionable next steps — Suggest intelligence queries, source tracing, or watermark checks as appropriate
- For inconclusive results (0.3–0.5) — Explicitly state the result is inconclusive and recommend additional analysis with different parameters or manual review
- Never present detection as legal evidence — Detection results are analytical tools, not forensic certifications
Error Handling
| Error | Cause | Resolution |
|---|---|---|
| 400 | Invalid request body or missing url |
Check required parameters |
| 401 | Invalid or missing API key | Verify RESEMBLE_API_KEY |
| 404 | Detection UUID not found | Verify the UUID from the creation response |
| 422 | Detection not completed (for Intelligence) | Wait for detection to reach completed status |
| 429 | Rate limited | Back off and retry with exponential delay |
| 500 | Server error | Retry once, then report to user |
Privacy & Compliance Notes
- Zero retention mode: Set
zero_retention_mode: trueto auto-delete media after analysis. The URL is redacted andmedia_deletedis set to true post-completion. - Text privacy mode: Set
privacy_mode: trueon text detection to prevent text content from being stored after analysis. - Data handling: Media URLs and text content are stored by default. For GDPR/compliance-sensitive workflows, enable zero retention (media) or privacy mode (text).
- Callback security: If using
callback_url, ensure the endpoint is HTTPS and authenticated on the receiving end.