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Freelancer Needed – JSON Schema & W3C Web of Things (WoT) Thing Description Assignment I am looking for an experienced freelancer who can complete a assignment involving: JSON payload creation JSON Schema Draft-07 validation W3C Web of Things (WoT) Thing Descriptions Partial TDs and Full TDs HTTP / CoAP interaction descriptions Security schemes and semantic versioning The project consists of two major parts and requires precise implementation according to the specifications. Part 1 – JSON & JSON Schema Tasks include creating multiple JSON payloads and corresponding JSON Schema Draft-07 files, including: primitive JSON types arrays and nested objects validation constraints temperature/unit validation coordinate payload validation frequency validation schemas reusable schema definitions strict filename requirements Important: schemas must use Draft-07 no overspecification validation must pass automated tests filenames must exactly match the requirements Part 2 – W3C WoT Thing Descriptions (TDs) Tasks include creating: Partial TDs Full valid TDs Properties, Actions and Events Security definitions (noSec, Basic Auth, Bearer Token) multilingual TDs HTTP and CoAP interaction forms XML payload support robot/controller Thing Descriptions forms arrays for interactions The TDs must validate correctly against the official TD validation schema / TD Playground. Requirements Please apply only if you have experience with: JSON Schema Draft-07 W3C Web of Things (WoT) Thing Descriptions (TD) REST / HTTP APIs semantic versioning JSON validation and schema design Please include in your application: Your experience with JSON Schema and WoT TDs Whether you have worked with TD Playground validation before Your availability Estimated completion time Fixed price or hourly rate The assignment is detail-oriented and requires exact adherence to the specifications. Short-term availability is preferred.
Project ID: 40432794
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Hi, I've worked extensively with JSON Schema Draft-07 and W3C WoT Thing Descriptions in past projects, so I understand exactly what your assignment demands — from crafting valid JSON payloads with proper validation constraints to building compliant Partial and Full TDs with correct security schemes, interaction affordances, and protocol bindings. My approach would be to tackle Part 1 by creating each JSON payload and its corresponding schema with precise filenames, ensuring no overspecification and passing automated validation. For Part 2, I'll build each Thing Description — including noSec, Basic Auth, Bearer Token security definitions, multilingual support, HTTP/CoAP forms, and XML payloads — validating everything against the official TD Playground. I can start immediately and am confident in delivering clean, spec-compliant work.
€8 EUR in 1 day
6.5
6.5
52 freelancers are bidding on average €26 EUR for this job

Hello, As an industry-leading web service provider that has been meticulously building and designing websites using the latest technologies including JSON and PHP. Our team at Our Software has a wealth of hands-on experience with JSON Schema Draft-07 and W3C Web of Things (WoT) Thing Descriptions making us perfectly positioned to tackle the intricacies of your assignment. We fully understand the core requirements of your project, from creating precise and efficient JSON payloads to developing HTTPS/CoAP interaction descriptions using robust security schemes and semantic versioning. This means you can rely on us to not only deliver your project but to ensure that it strictly adheres to all specifications even down to filenames. Our work is of the highest quality, we make sure our schemas use Draft-07, are not overspecified, pass automated tests, and filenames are meticulously consistent. Our commitment to precision combined with our proficiency in REST/HTTP APIs and aptitude with semantic versioning makes us an appropriate choice for your detailed-oriented project. With us, you can expect not just competence but also constant communication so you’re informed every step of the way whilst we handle the task of creating Partial TDs, Full valid TDs with adequate Properties Actions, Events, Security definitions, including 'noSec,' 'basic auth,' 'bearer token,' multilingual capabilities and more. We've worked on numerous similar projects Thanks!
€25 EUR in 1 day
8.6
8.6

Hello,\n\nI can help you create the necessary JSON payloads, JSON Schema files, and W3C WoT Thing Descriptions precisely according to your specifications.\n\nMy approach involves meticulous schema design and TD authoring, ensuring all validations pass and requirements are met.\n\nCould you please specify the exact number of JSON payloads and TD examples required for each part?
€25 EUR in 5 days
7.4
7.4

Hello Hi there, I see you need help with JSON schema and W3C Web of Things specifications. My 5+ years of full-stack experience, specifically with data structuring and API design, makes me well-equipped to ensure your implementation is robust and adheres to standards. I can deliver clean, validated schemas that integrate seamlessly. Let's schedule a quick chat to discuss your project needs. Giáp Văn Hưng
€18 EUR in 7 days
6.7
6.7

Hello, I understand you need expertise in JSON Schema and W3C Web of Things Thing Description for your project. A key challenge is ensuring schema precision aligns with WoT requirements for seamless interoperability. Our team has over 10 years of experience with PHP, Laravel backend, and frontend technologies like Vue.js and React.js, plus strong skills in API and schema integration. You can check samples from our work at https://www.freelancer.com/u/eliaa Looking forward to hearing from you. Best Regards, Elia Fawzy.
€30 EUR in 7 days
6.9
6.9

Validating W3C Web of Things Thing Descriptions against JSON Schema is straightforward if you have the right tooling. I've handled device interoperability using MQTT and Zigbee which relies on similar strict data structures. The main pitfall is usually around the semantic metadata definitions rather than the basic syntax. I can review your TDs and ensure they pass validation without blocking your integration work. Since this is a fixed price task, efficiency matters. Do you already have the Thing Descriptions drafted or do you need them created from scratch?
€8 EUR in 7 days
6.6
6.6

With a strong background in JSON and PHP, my team and I can bring invaluable expertise to your project focused on JSON Schema Draft-07, W3C Web of Things (WoT), and Thing Descriptions (TD). Our familiarity with REST/HTTP APIs, semantic versioning, and JSON validation perfectly aligns with your requirements. Over the years, we have created numerous JSON payloads employing various primitive types, arrays, nested objects, and applying effective validation constraints. We know the importance of strict filename requirements and will flawlessly meet them. Additionally, our keen eye for detail ensures no overspecification while ensuring all necessary validation tests pass. In terms of W3C WoT Thing Descriptions, we've created partial and full valid TDs incorporating Properties, Actions, and Events along with Security definitions like noSec, Basic Auth, Bearer Token using HTTP/CoAP interaction forms. With our multilingual TD construction capabilities and proficiency in handling XML payloads efficiently, we aim to deliver outstanding results matching your precise specifications. Rest assured that when you collaborate with us, you are partnering with dedicated professionals who prioritize client satisfaction through impeccable workmanship. Our goal is not just to complete assignments but also to build long-term relationships based on trust, professional communication, and on-time delivery. Let's kickstart this project together!
€10 EUR in 2 days
6.9
6.9

With my extensive 10+ years of experience as a Full Stack Developer and Digital Solutions Expert, I have gained proficiency in the very tasks your project demands. I have substantial knowledge on JSON Schema Draft-07, W3C Web of Things (WoT) Thing Descriptions, REST / HTTP APIs, semantic versioning and JSON validation and schema design. I possess a strong understanding of the nuances and intricacies that come with each, ensuring precise implementation. I have previously created multiple JSON payloads with corresponding JSON Schema Draft-07 files that utilized various primitive JSON types, arrays and nested objects. I am well-versed in creating Partial TDs, Full valid TDs, incorporating Properties, Actions and Events, defining Security schemes and incorporating multilingual TDs for HTTP and CoAP interaction forms. Having successfully conducted automated tests to validate my results, I ensure the meticulous attention to detail required for effective completion of your project. With me on board at Prajapati Technologies, you can be assured of not only quality but also expedient and impeccable completion you require from your freelancer.
€99 EUR in 7 days
6.3
6.3

Dear Client, Hello There! I’m Md Toriqul Islam, and I’m excited to partner with you & can dive into your project immediately. I’m experienced in JSON Schema Draft-07 design, W3C Web of Things (WoT) Thing Descriptions, REST API structures, and strict validation-based development with strong attention to specification accuracy. I understand you need precise implementation of JSON payloads and schemas (Draft-07), along with valid WoT Thing Descriptions including properties, actions, events, security schemes, HTTP/CoAP forms, and full validation compliance using TD standards. My skills in JSON validation, schema design, API modeling, and structured data architecture ensure correct, test-passing implementations aligned with official W3C WoT requirements. I’m available immediately and can deliver within your required short-term timeline. Best regards, Md Toriqul Islam
€30 EUR in 2 days
5.8
5.8

Hello, I can complete your JSON Schema Draft-07 and W3C WoT Thing Description assignment with strict adherence to specifications and validation requirements. I have experience designing JSON Schemas with complex constraints as well as building WoT Thing Descriptions validated against TD Playground and official schemas. My approach will start by carefully analyzing each requirement to ensure correct structure for payloads, schemas, and TD components without over-specification. I will implement reusable schema definitions, validated Draft-07 files, and ensure all filenames and constraints match exactly as required for automated testing. For the WoT part, I will create fully compliant Partial and Full TDs including properties, actions, events, security schemes, and HTTP/CoAP forms with correct interaction modeling. I will ensure multilingual support, XML payload handling where required, and proper semantic versioning across all TDs. Each output will be tested against validation tools to guarantee correctness before delivery. I can start immediately and deliver within a short, focused timeline depending on scope confirmation.
€50 EUR in 7 days
5.1
5.1

I hope you're doing well! My name is Nawal, and I bring over nine years of experience in JSON Schema & WoT Thing Description Expert. After carefully reviewing your project brief, I’m confident that I understand your needs and can deliver exactly what you're looking for. Here’s what I offer: ✅ Multiple initial drafts within 24 to 48 hours ✅ Unlimited revisions until you're 100% satisfied ✅ Final delivery in all required formats, including the editable master file and full copyright ownership You can check out my portfolio and past work here: ? Freelancer Profile – eaglegraphics247 I’d love to discuss your project further and explore how we can make your vision a reality. Let me know a convenient time for a quick chat! Looking forward to working together. Best regards, Nawal
€25 EUR in 1 day
4.8
4.8

Hi, I have strong experience working with JSON Schema Draft-07, REST/HTTP APIs, validation workflows, and W3C Web of Things Thing Descriptions including TD Playground validation, security schemes, interaction forms, and semantic versioning. I can complete both the JSON Schema and WoT TD sections precisely according to specification requirements, ensuring strict validation compliance, correct filenames, and clean structured implementations. I’m available for a quick start and would be happy to review the assignment details and validation expectations over a short chat or call before beginning. My pricing is flexible depending on the final scope and deadlines, and I’m confident I can deliver accurate, test-passing work within the agreed timeline. Best Regards, Saad
€19 EUR in 7 days
4.9
4.9

Hello, Have you mapped out the specifics for the JSON payloads and W3C WoT Thing Descriptions (TDs)? I have solid experience in creating JSON Schemas Draft-07 and developing comprehensive TDs tailored to comply with project requirements. For Part 1, I can efficiently create multiple JSON payloads and the appropriate schemas, adhering strictly to the provided filename requirements and validation constraints. In Part 2, I will ensure the TDs are valid, incorporating properties, actions, events, and necessary security definitions. To better understand the project, could you clarify: 1. How many JSON payloads and schemas do you need? 2. Are there specific APIs or devices I should consider for the TDs? 3. Do you have a preferred structure for the multilingual TDs? 4. What category of security scheme do you anticipate will be used most frequently? I can provide a preliminary estimate, but cost and timeline will be placeholders until the details are confirmed. Looking forward to your response! Relevant Portfolio: • https://www.freelancer.com/u/amjad2 Best Regards, Amjad Iqbal
€30 EUR in 1 day
4.8
4.8

the tricky part with WoT Thing Descriptions is making sure your JSON Schema validations cover all the required fields like @context, @type, and the interaction affordances. a lot of people miss the security scheme definitions and the whole TD fails to validate. i've worked through the W3C spec enough to know where it gets painful. can have this done in 24 hours. want to share the assignment details so i can confirm scope and give you a fixed price?
€30 EUR in 3 days
4.5
4.5

I can help you pass the automated tests by precisely implementing the JSON Schema Draft-07 constraints without overspecifying. I will build the required schemas for temperatures, coordinates, and frequencies using efficient `$ref` definitions, strictly adhering to your exact file naming rules. For the W3C WoT section, I will structure the Partial and Full Thing Descriptions to correctly handle the requested Properties, Actions, and Events. I will map out the HTTP/CoAP interaction forms, XML payload support, and security schemes (noSec, Basic Auth, Bearer Token) so they validate seamlessly against the official W3C TD validation schema and TD Playground.
€19 EUR in 7 days
4.7
4.7

With my solid decade of full-stack development experience, I am confident in tackling your JSON Schema & WoT Thing Description assignment. Specifically in regards to JSON Payload Creation, Strict Filename Requirements and precise TD implementation. My understanding of modern web technologies, mobile frameworks, CMS platforms and API integrations aligns perfectly with what you are looking for. Having comprehensive knowledge in PHP and Java, which has also allowed me to develop good grip on REST/HTTP APIs since these skills are highly desired when working with JSON - making me an ideal candidate for this role. My commitment to delivering reliable and scalable digital solutions that ensure efficient systems is a guarantee of value for your money. I don’t just develop projects; I handle them from inception to deployment and optimization if needed. My prompt and reliable communication will also be an added advantage in completing tasks accurately and within set deadlines. Given the exacting nature of your assignment, my approach of paying keen attention to client requirements would serve us well by minimizing the back-and-forth. And lastly, as an agile freelancer specializing in delivering quality work promptly without compromise, choosing me for this project is a choice committed to success.
€20 EUR in 2 days
4.9
4.9

I'm excited to present you with the opportunity to work with a seasoned software engineer who has thrived within the industry's dynamic needs. My proficiency in crafting precise JSON payloads, keen understanding of the JSON Schema Draft-07, and deep familiarity with W3C Web of Things (WoT) make me an ideal candidate for your project. Having worked extensively with REST/HTTP APIs, I've nurtured an intuitive grasp of the sort of precise implementation that your project demands. Significantly, I recently worked on a project in which I created and validated Web Thing Descriptions (TDs) against the TD Playground successfully. Complementing this relevant experience is my comprehensive understanding of semantic versioning - ensuring interoperability across device and system updates becomes second nature and vitally important to guaranteeing smooth functionality. In sum, if you choose to collaborate with me, you'll not just be working with someone classified among the top 1% on Freelancer but someone dedicated to converting their availability into efficiency without compromising quality standards. Let's realize your vision in a timely manner while remaining mindful of your fixed price or hourly rate obligations! Reach out; let's exceed your expectations on this project together!
€50 EUR in 3 days
4.3
4.3

As a seasoned Full Stack Web Developer, I have not only extensive knowledge in JSON Schema Draft-07 and W3C Web of Things but also ample hands-on experience handling complex assignments that entail these programming languages. Through my previous projects, I have demonstrated my proficiency in creating JSON payloads, validating them against their corresponding schemas, and working with W3C WoT Thing Descriptions (TDs). My understanding of REST/ HTTP APIs will also be beneficial while handling your project as it ties into the core fundamentals required for proper communication and interaction. I am aware of the utmost importance of ensuring strict adherence to the specifications and guidelines. Not only will I be able to provide you with multi-level TDs (Partial TDs/Full valid TDs) but also set up the necessary Property, Actions and Events definitions besides Security definitions such as "noSec", "Basic Auth" and "Bearer Token". Additionally, these capabilities extend to creating XML-payload support and providing multilingual TDs to ensure an inclusive and user-friendly experience.
€8 EUR in 2 days
3.1
3.1

Hi, ⭐15+ Yrs Sr Developer here⭐ I can help complete this JSON Schema and W3C Web of Things assignment with the precision needed for automated validation. I’ve worked with JSON Schema Draft-07, REST/HTTP API structures, XML payload handling, validation rules, reusable schema definitions, and strict specification-based data modeling. I can create the required JSON payloads, Draft-07 schemas, Partial TDs, Full TDs, security schemes, multilingual TDs, HTTP/CoAP forms, and semantic versioning exactly according to your assignment requirements. I understand the importance of avoiding overspecification while still passing validation against the expected schema and TD Playground checks. I’m available short-term and can work carefully through the filenames, constraints, and validation results so every submitted file matches the required format. If you think I am a good fit, feel free to ping me anytime. — GAZMIR
€20 EUR in 1 day
3.2
3.2

Hello, As a result of a detailed review of your project requirements, I fully understand the scope and expectations. I have experience handling similar JSON Schema and W3C Web of Things (WoT) assignments and I'm available to start your project right now. I bring deep expertise in JSON, XML, REST/HTTP APIs, Java, PHP, JSON Schema Draft-07, and WoT Thing Descriptions with over 10 years of experience. One of the key challenges in projects like this is following the specification exactly without overengineering the schemas or breaking validation rules required by automated tests and TD Playground validation. My approach would be to carefully implement each JSON payload and Draft-07 schema with reusable definitions, strict validation constraints, and exact filename compliance, then build Partial and Full WoT TDs with proper Properties, Actions, Events, security schemes, HTTP/CoAP forms, multilingual support, semantic versioning, and XML payload definitions. For availability, I can start immediately and complete the assignment quickly depending on the total number of schema/TD files required. I have a couple of quick questions. • Do you already have the exact assignment specification PDF/document available? • Are there automated validation scripts/tests that the files must pass besides TD Playground? I would be glad to discuss further details and am ready to start immediately. Looking forward to hearing from you. Best regards, Carlos
€20 EUR in 3 days
2.9
2.9

Hello, I’m confident I can complete this assignment with precise adherence to the specifications and validation requirements. I have hands-on experience working with JSON Schema Draft-07, REST/HTTP APIs, and W3C Web of Things (WoT) Thing Descriptions, including creating both Partial and Full TDs with proper interaction affordances, security schemes, and semantic metadata. My experience includes: • Designing and validating JSON payloads and Draft-07 schemas • Creating reusable schema definitions and strict validation constraints • Working with nested objects, arrays, enums, ranges, and format validation • Developing WoT Thing Descriptions with Properties, Actions, Events, forms arrays, and multilingual support • Implementing HTTP and CoAP interaction forms • Configuring noSec, Basic Auth, and Bearer Token security schemes • Validating TDs using TD Playground and official validation schemas I understand that this project is highly detail-oriented and requires: • exact filenames • no overspecification • strict Draft-07 compliance • automated validation success I pay close attention to specification accuracy and test validation, which is critical for assignments like this. Availability: I can start immediately and provide regular progress updates. Estimated Completion Time: 1–3 days depending on the total number of files and validation cases required. I’d be happy to review the assignment details and begin right away. Best regards
€10 EUR in 7 days
2.7
2.7

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