| ViewportWitness by Apex Labs ViewportWitness browser QA report across three viewports | honeygate.app | - | $0.08 | listed |
| ViewportWitness by Apex Labs Deterministic public HTML to clean Markdown extraction | honeygate.app | - | $0.005 | listed |
| Vimmerse Transforms or reimagines a source image from a public HTTPS URL with a text prompt, and returns the asset with the output URLs in results. Credits depend on the model tier and the quantity. | vimmerse.net | - | $0.12 | listed |
| Vimmerse Synthesizes speech from text with the chosen voice and model, and returns the asset with the audio URL in results. The language is detected from the text when not given. | vimmerse.net | - | $0.12 | listed |
| Vimmerse Generates one to four images from a text prompt with the chosen model, and returns the asset with the output URLs in results. AutoI picks a model automatically. Credits depend on the model tier and the quantity. | vimmerse.net | - | $0.12 | listed |
| Vimmerse Generates one to four images from a text prompt with the chosen model, and returns the asset with the output URLs in results. AutoI picks a model automatically. Credits depend on the model tier and the quantity. | vimmerse.net | - | $0.12 | listed |
| Vimmerse Dev Generates one to four images from a text prompt with the chosen model, and returns the asset with the output URLs in results. AutoI picks a model automatically. Credits depend on the model tier and the quantity. | zeroclick.io | - | $0.04 | listed |
| Vimmerse Dev Generates one to four images from a text prompt with the chosen model, and returns the asset with the output URLs in results. AutoI picks a model automatically. Credits depend on the model tier and the quantity. | vimmerse.co | - | $0.12 | listed |
| Vimmerse Dev Queues a video generation job from a text prompt, optional reference media and an optional audio track, and returns the media object at once. Poll GET /v2/media/{media_id} until processing_status is success and read the URLs in result. Credits depend on the tool tier, the duration, the quantity and the audio options, and the estimate route returns the exact number. | vimmerse.co | - | $1.20 | listed |
| Vimmerse Dev Generates a video from one or more reference images and a prompt with the chosen tool, for 1 to 30 seconds. Send async_mode true and poll GET /v2/asset/{asset_id}. Credits depend on the tool tier and the duration in 5 second blocks. | vimmerse.co | - | $1.20 | listed |
| Vimmerse Dev Generates one to four images from a text prompt with the chosen model, and returns the asset with the output URLs in results. AutoI picks a model automatically. Credits depend on the model tier and the quantity. | vimmerse.co | - | $0.12 | listed |
| Vimmerse Dev Synthesizes speech from text with the chosen voice and model, and returns the asset with the audio URL in results. The language is detected from the text when not given. | vimmerse.co | - | $0.12 | listed |
| Vin API Call when an agent has a VIN and needs the check digit, the world manufacturer identifier, and the region. Does not confirm a specific vehicle. | agentshield.live | - | $0.005 | listed |
| Vin Decode API Decode a 17-character vehicle identification number with NHTSA vPIC: make, model, model year, trim, body, doors, engine (cylinders, displacement, hp, fuel, electrification), drive, transmission, manufacturer and plant. Validates format and the check digit (mandatory for North American VINs). Best coverage for vehicles sold in the US. Params: vin (required). | agentsvc.io | - | $0.002 | listed |
| Vin Decode Batch API Batch VIN decode via NHTSA vPIC, up to 25 VINs per call -- same fields as single decode, returned per VIN. Built for fleet underwriting. | railway.app | - | $20,000.00 | listed |
| Vin Decoder (nhtsa) API VIN decoder (NHTSA): make, model, year, trim, body, engine, fuel, plant — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.002 | listed |
| Vin Decoder API VIN decoder API: turn any 17-character vehicle identification number into structured specs — make, model, year, trim, body class, engine (cylinders, displacement, horsepower, fuel), transmission, drive type, doors, GVWR, and assembly plant. Handles partial VINs with * wildcards. Official registration-grade decode for automotive, insurance, dealer, and marketplace agents. Response includes affiliate offers for full VIN history reports. | forgemesh.io | - | $0.005 | listed |
| Virtual Protocol API Virtuals Protocol (VIRTUAL) price in USD now, with 24h and 7d change — Genesis402 / UnyKorn Operator Network | unykorn.org | - | $0.001 | listed |
| Virtual Traits API For AI agents building agent swarms, synthetic users, NPCs, or trading bots. Input: archetype + prompt (e.g. 'risk-taking crypto founder'). Output: OCEAN Big Five + Dark Triad + trading psychology vector with emotional drift and memory anchors. M2M: use when you need consistent agent personality, backtest personas, or generate 1000s of synthetic traders. Pay-per-call USDC Base, no API key. | billionaireorder.com | - | $0.01 | listed |
| Visibility Report API White-label local visibility report for one business -- combines Google Business Profile completeness, organic search ranking for a target keyword, and AI answer-engine visibility for a buyer-intent query into a single PDF deliverable. White-label by design: no TariffMonkee branding anywhere in the report output, so agencies can present it under their own name to a client or prospect. | tariffmonkee.com | - | $0.15 | listed |
| Vision API Answer a question about an image, or describe it, from a URL or base64. Image understanding pay-per-call, no account and no API key: send an image URL (or base64) and an optional question, receive a plain-language answer from a multimodal… | x-402.online | - | $0.02 | listed |
| Visualize API Turn your own data into interactive Tako Knowledge Card visualizations. Provide data as CSV strings and a natural language query describing what to visualize. Tako auto-selects the best chart type or you can specify one. Returns a knowledge card with chart image, interactive webpage, and embed URLs. Example: {"csv": ["quarter,revenue\nQ1,100\nQ2,200\nQ3,300"], "query": "Show revenue growth as a bar chart"} | orthogonal.com | - | $0.023 | listed |
| Vocabulary API Takes a recording of up to 60 minutes in the language being learned and a learner level, and returns words and phrases worth learning — chosen for the level, skipping the most basic ones — each with the base form, translation into the learner's language, word type, an estimated CEFR level, and the exact example sentence from the recording with its timestamp so it can be listened to in context. | halowerk.com | - | $0.03 | listed |
| Voice Clean API Takes an audio or video file and returns a cleaned speech recording. A high-pass filter removes rumble and mains hum, an FFT noise reducer with continuous noise tracking lowers steady background noise such as fans, air conditioning and hiss by 10, 18 or 28 dB, a declicker removes short clicks, and the result is normalised to the target loudness in two passes. | halowerk.com | - | $0.004 | listed |
| Voice Clone Check API Calculates cosine similarity between caller-supplied numeric embeddings and combines it with supplied spectral distance, pitch-contour correlation and timing distance using fixed weights. It processes no audio and cannot establish speaker identity, consent, cloning, authenticity or fraud. | halowerk.com | - | $0.003 | listed |
| Voice Evidence API Returns measured evidence about a recording, not a verdict on it. The spectral cut-off says which lossy stages the file has already been through, since every encoder discards everything above its own ceiling. The room tone measurement compares the noise floor across the silent stretches: a microphone in a room produces a floor that differs between pauses, and a level identical to the hundredth of a decibel across every pause means the silence was inserted rather than recorded. | halowerk.com | - | $0.006 | listed |
| Voice Note Tasks API Takes a voice note or memo of up to 10 minutes and returns its contents as separate entries: tasks with due date, events with start and end, contacts with spoken phone number or e-mail, and notes. Relative expressions such as "tomorrow", "next Tuesday" or "end of the month" are resolved against reference_time in the given IANA time zone, and every entry carries the verbatim phrase it was taken from, checked against the transcript. | halowerk.com | - | $0.03 | listed |
| Voice Synthesis API Voice synthesis API: converts written text (up to 2000 characters) into a natural-sounding spoken-word audio file, delivered as base64 WAV with a choice of five male and five female voice presets. No account or third-party key required, and text is never retained. Suited for voice assistants, IVR prompts, and turning written notifications into audio. | forgemesh.io | - | $0.01 | listed |
| VoidFeed Returns verified, citation-backed facts about new AI model releases, benchmark scores, and protocol changes, each with source URLs and confidence. | aidress.ai | - | $0.05 | listed |
| Vokko Does 0x07066ea0e66cf277cd279ed7fbca220ecb41e5a4 belong to allbirds.com? Evidence, not a guarantee. $0.002. | vokko.eu | - | $0.002 | listed |
| Vokko Can an agent pay at allbirds.com? Rails, endpoint, price, freshness. $0.001. Cached report stays free at /api/v1/hosts/allbirds.com. | vokko.eu | - | $0.001 | listed |
| Volcanic Ash Route API Takes a route as an ordered list of waypoints, samples it at a chosen spacing and tests every sample against the currently active SIGMETs carrying a volcanic ash hazard. For each hit you get the affected segment as a from-to pair of waypoints, the SIGMET issuing centre and flight information region, the validity window, the reported base and top of the ash layer, and the raw text. | halowerk.com | - | $0.006 | listed |
| Volcanoes API U.S. Volcano Alerts (elevated activity, USGS). U.S. volcanoes at elevated activity right now (USGS): alert level, aviation color code, observatory and the latest notice, filterable by region (Alaska, Hawaii, Cascades...). | saylorinnovations.com | - | $1,000.00 | listed |
| Volume Check API Is this token's volume real demand? 24h round-trip analysis: how much volume came from wallets buying and selling the same token back and forth (wash trading, arbitrage or market making) versus one-way trades, with the top round-trippers and pool liquidity. Optional ?hours=1..168. | apexfaucet.xyz | - | $0.004 | listed |
| Vote Buying Detect API Scores caller-supplied vote/transfer observations using cohort-relative transfer size, transfer recency, and repeated-counterparty count. The output is an investigative triage heuristic, not proof of vote buying, identity linkage, or wrongdoing. | halowerk.com | - | $0.004 | listed |
| Voter Turnout Predict API Applies a fixed, published logistic equation to aggregate caller-supplied features and reports an estimated turnout range. It is an untrained scenario heuristic, not a calibrated election forecast, individual propensity score, or basis for voter targeting. | halowerk.com | - | $0.003 | listed |
| Voxight Voxight top signal: the highest scoring sellable market intelligence signal of the last 7 days, ranked by the calibrated Voxight Signal Score, with its topic, type, domain, confidence, sentiment, summary and full analysis. Use it when an agent wants the single most actionable AI or tech signal right now. No input needed. AIAX manifest at https://www.voxight.online/aiax/manifest.json. | voxight.online | - | $0.04 | listed |
| Vtuber Rigging API Validates frame/channel dimensions, clamps weights to 0–1 and applies exponential smoothing over time in each named channel. It does not infer a face, build a rig, retarget skeletons, process video or replace animator review. | halowerk.com | - | $0.004 | listed |
| Vwap Deviation API DripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. VWAP Deviation measures the latest price deviation from the window VWAP. Discovery examples use the latest 30m window. | dripmetrics.ai | - | $0.05 | listed |
| WCAG 2.1 accessibility audit of a URL. Checks color contrast, alt text, form labels, ARIA roles, heading hierarchy, link text, language. Mostly deterministic. WCAG 2.1 accessibility audit of a URL. Checks color contrast, alt text, form labels, ARIA roles, heading hierarchy, link text, language. Mostly deterministic. | strale.io | - | $0.324 | listed |
| WCAG contrast Compute the WCAG 2.1 contrast ratio between two colors and whether it passes AA/AAA. | openverbs.com | - | $0.002 | listed |
| WHOIS Lookup Domain registration lookup via RDAP (modern WHOIS). Returns registrar, registrar_url, created_at, updated_at, expires_at, days_until_expiry, name_servers array, status array, and registrant_country. Clean JSON, no raw WHOIS text to parse. Covers all major TLDs. | agentsvc.io | - | $0.0045 | listed |
| WHOIS RDAP Domain Lookup WHOIS / RDAP domain lookup: give a domain, get registrar, registration (creation), expiry and last-updated dates, status codes and nameservers from the registry's RDAP service, plus DNS records and SPF/DMARC/DKIM email-auth posture. Use to check a domain's age, owner registrar or expiry before trusting a counterparty. No personal data. Signed receipt. | stablecoingateways.com | - | $0.003 | listed |
| WHOIS lookup Return registration data for a domain: registrar, creation and expiry dates, nameservers and status. Live registry lookup. | gadgethumans.com | - | $0.002 | listed |
| WITAN Full knowledge unit content (query param: id). Digital content, delivered in full on payment: it cannot be withdrawn once delivered unless it differs from its listing (WITAN terms, section 4). | witan.markets | - | $10,000.00 | listed |
| WOD Coach WOD Coach: a personalised training programme by an AI coach for $0.35 USDC on Base. Handles injuries with enforced movement substitutions, custom equipment lists, single sessions or 3–8 week progressive blocks (Baseline → Volume → Intensity → Deload). JSON body: equipment, user_context, duration. Returns Markdown, or JSON with ?format=json. | railway.app | - | $0.35 | listed |
| Wage Benchmark API Returns annual gross earnings and hourly labour costs per country, in national currency or euro and in purchasing power standards, and never blends the two. The separation is the point: forty-five thousand euro in one country and twenty-two thousand in another is a factor of two nominally and much less in purchasing power, and which figure is correct depends entirely on the question. | halowerk.com | - | $0.006 | listed |
| Wait Times API U.S. Land Border Wait Times (CBP). Live U.S. land border wait times (CBP) for Mexican and Canadian crossings: passenger, SENTRI/NEXUS, Ready, pedestrian and commercial lane delays and lanes open. | saylorinnovations.com | - | $1,000.00 | listed |
| Wallet API Live check of any Hyperliquid wallet from public data: account, positions, leverage, profit total/30/90 days, drawdown, trades and liquidations (90 days), risk with data gaps. Facts only, not investment advice. | agentmetric.app | - | $90,000.00 | listed |
| Wallet API Deterministic on-chain structural-safety report for a Base address: contract detection, verification status, proxy/owner/privileged-function analysis. Behavioral signals (age, activity, funding) not yet included. Keyless x402-native payment — no signup, no API key. Score 0-100, higher = structurally safer. See free real samples before paying: GET /samples/index.json | token-risk.com | - | $0.01 | listed |