> For the complete documentation index, see [llms.txt](https://guardian.hedera.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guardian.hedera.com/api-reference-guardian/data-and-dmrv/projects.md). # Projects Environmental projects generating verified carbon or ecological credits. ## Search projects > Search projects by filters ```json {"openapi":"3.2.0","info":{"title":"Guardian","version":"3.7.1"},"tags":[{"name":"projects","description":"Environmental projects generating verified carbon or ecological credits.","parent":"data"}],"servers":[{"url":"/api/v1","description":"API v1"}],"paths":{"/projects/search":{"post":{"description":"Search projects by filters","operationId":"ProjectsAPI_projectSearch","parameters":[],"requestBody":{"required":true,"description":"Search filters for projects. Optionally filter by category IDs and/or policy IDs.","content":{"application/json":{"schema":{"type":"object","properties":{"categoryIds":{"type":"array","items":{"type":"string"},"description":"Filter by category IDs"},"policyIds":{"type":"array","items":{"type":"string"},"description":"Filter by policy IDs"}}}}}},"responses":{"202":{"description":"Successful operation.","content":{"application/json":{"schema":{"type":"array","items":{"$ref":"#/components/schemas/ProjectDTO"}}}}},"500":{"description":"Internal server error.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/InternalServerErrorDTO"}}}}},"summary":"Search projects","tags":["projects"]}}},"components":{"schemas":{"ProjectDTO":{"type":"object","properties":{"id":{"type":"string"},"policyId":{"type":"string"},"policyName":{"type":"string"},"registered":{"type":"string"},"title":{"type":"string"},"companyName":{"type":"string"},"sectoralScope":{"type":"string"}},"required":["id","policyId","policyName","registered","title","companyName","sectoralScope"]},"InternalServerErrorDTO":{"type":"object","properties":{"statusCode":{"type":"number"},"message":{"type":"string"}},"required":["statusCode","message"]}}}} ``` ## Compare documents. > Compare documents. ```json {"openapi":"3.2.0","info":{"title":"Guardian","version":"3.7.1"},"tags":[{"name":"projects","description":"Environmental projects generating verified carbon or ecological credits.","parent":"data"}],"servers":[{"url":"/api/v1","description":"API v1"}],"paths":{"/projects/compare/documents":{"post":{"description":"Compare documents.","operationId":"ProjectsAPI_compareDocumentsV2_2","parameters":[],"requestBody":{"required":true,"description":"Filters.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/FilterDocumentsDTO"}}}},"responses":{"200":{"description":"Successful operation.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/CompareDocumentsV2DTO"}}}},"422":{"description":"Unprocessable entity.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/UnprocessableEntityErrorDTO"}}}},"500":{"description":"Internal server error.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/InternalServerErrorDTO"}}}}},"summary":"Compare documents.","tags":["projects"]}}},"components":{"schemas":{"FilterDocumentsDTO":{"type":"object","properties":{"idLvl":{"oneOf":[{"type":"string","enum":["0","1"]},{"type":"number","enum":[0,1]}]},"eventsLvl":{"oneOf":[{"type":"string","enum":["0","1","2"]},{"type":"number","enum":[0,1,2]}]},"propLvl":{"oneOf":[{"type":"string","enum":["0","1","2"]},{"type":"number","enum":[0,1,2]}]},"childrenLvl":{"oneOf":[{"type":"string","enum":["0","1","2"]},{"type":"number","enum":[0,1,2]}]},"documentId1":{"type":"string"},"documentId2":{"type":"string"},"documentIds":{"type":"array","items":{"type":"string"}}}},"CompareDocumentsV2DTO":{"type":"object","properties":{"projects":{"$ref":"#/components/schemas/CompareDocumentsDTO"},"presentations":{"$ref":"#/components/schemas/CompareDocumentsDTO"}},"required":["projects","presentations"]},"CompareDocumentsDTO":{"type":"object","properties":{"left":{"$ref":"#/components/schemas/CompareDocumentItemDTO"},"right":{"$ref":"#/components/schemas/CompareDocumentItemDTO"},"total":{"type":"number"},"documents":{"$ref":"#/components/schemas/CompareDocumentsSectionDTO"}},"required":["left","right","total","documents"]},"CompareDocumentItemDTO":{"type":"object","properties":{"id":{"type":"string"},"type":{"type":"string"},"owner":{"type":"string"},"policy":{"type":"string","nullable":true}},"required":["id","type","owner"]},"CompareDocumentsSectionDTO":{"type":"object","properties":{"columns":{"type":"array","items":{"$ref":"#/components/schemas/ComparePoliciesColumnDTO"}},"report":{"type":"array","items":{"type":"object"}}},"required":["columns","report"]},"ComparePoliciesColumnDTO":{"type":"object","properties":{"name":{"type":"string"},"label":{"type":"string"},"type":{"type":"string"},"display":{"type":"string"}},"required":["name","label","type"]},"UnprocessableEntityErrorDTO":{"type":"object","properties":{"statusCode":{"type":"number"},"message":{"oneOf":[{"type":"string"},{"type":"array","items":{"type":"string"}}]},"error":{"type":"string"}},"required":["statusCode","message"]},"InternalServerErrorDTO":{"type":"object","properties":{"statusCode":{"type":"number"},"message":{"type":"string"}},"required":["statusCode","message"]}}}} ``` ## Get all properties > Get all properties ```json {"openapi":"3.2.0","info":{"title":"Guardian","version":"3.7.1"},"tags":[{"name":"projects","description":"Environmental projects generating verified carbon or ecological credits.","parent":"data"}],"servers":[{"url":"/api/v1","description":"API v1"}],"paths":{"/projects/properties":{"get":{"description":"Get all properties","operationId":"ProjectsAPI_getPolicyProperties","parameters":[{"name":"iwaVersion","required":false,"in":"query","description":"IWA dMRV specification version to list properties for. Omit to list every version.","schema":{"type":"string"}}],"responses":{"202":{"description":"Successful operation.","content":{"application/json":{"schema":{"type":"array","items":{"$ref":"#/components/schemas/PropertiesDTO"}}}}},"500":{"description":"Internal server error.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/InternalServerErrorDTO"}}}}},"summary":"Get all properties","tags":["projects"]}}},"components":{"schemas":{"PropertiesDTO":{"type":"object","properties":{"id":{"type":"string"},"title":{"type":"string"},"value":{"type":"string"},"iwaVersion":{"type":"string","description":"IWA dMRV specification version this property belongs to"},"description":{"type":"string","description":"What this property means, sourced from the IWA dMRV specification. Empty for IWA v1 properties."}},"required":["id","title","value"]},"InternalServerErrorDTO":{"type":"object","properties":{"statusCode":{"type":"number"},"message":{"type":"string"}},"required":["statusCode","message"]}}}} ``` --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://guardian.hedera.com/api-reference-guardian/data-and-dmrv/projects.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.