Climate Action Reserve API Integration Specification — Data Exchange Protocol

Overview

This document delineates the technical specifications for the API integration between DaedArch Corporation and the Climate Action Reserve (CAR). This integration aims to facilitate the exchange of carbon offset project data, ensuring compliance with CAR's standards for the California compliance market. The API will enable DaedArch to submit verified environmental data, including measurements related to forestry and livestock methane projects, while adhering to CAR's requirements for transparency and environmental integrity.

Authentication

1.1 Authentication Method

DaedArch shall implement OAuth 2.0 for authentication and authorization. All API requests must include a valid access token in the Authorization header as follows:

` Authorization: Bearer {access_token} `

1.2 Access Token Retrieval

To obtain an access token, DaedArch shall perform a POST request to the following endpoint:

Endpoint: ` POST https://api.climateactionreserve.org/oauth/token `

Request Body: `json { "grant_type": "client_credentials", "client_id": "{your_client_id}", "client_secret": "{your_client_secret}" } `

Response: Upon successful authentication, the response shall contain the access token:

`json { "access_token": "{access_token}", "token_type": "Bearer", "expires_in": 3600 } `

1.3 Token Expiry

Access tokens shall expire after 1 hour (3600 seconds). DaedArch must implement a refresh mechanism to obtain a new token prior to expiration.

Endpoints

2.1 Base URL

All API requests shall be made to the following base URL:

` https://api.climateactionreserve.org/v1/ `

2.2 Data Submission Endpoint

DaedArch shall submit environmental data via the following endpoint:

Endpoint: ` POST /projects/{project_id}/data `

Path Parameters:

• project_id: The unique identifier for the carbon offset project.

Request Body: The request body shall adhere to the following JSON schema:

`json { "timestamp": "YYYY-MM-DDTHH:mm:ssZ", "sensor_data": { "temperature": { "value": "float", "unit": "Celsius" }, "humidity": { "value": "float", "unit": "Percentage" }, "methane_emissions": { "value": "float", "unit": "ppm" } }, "location": { "latitude": "float", "longitude": "float" }, "verified": "boolean" } `

Response: Upon successful submission, the response shall be as follows:

`json { "status": "success", "data_id": "{data_id}", "message": "Data submitted successfully." } `

2.3 Data Retrieval Endpoint

To retrieve submitted data, DaedArch may use the following endpoint:

Endpoint: ` GET /projects/{project_id}/data/{data_id} `

Path Parameters:

• project_id: The unique identifier for the carbon offset project.
• data_id: The unique identifier for the submitted data.

Response: The response shall return the data object in the following format:

`json { "data_id": "{data_id}", "timestamp": "YYYY-MM-DDTHH:mm:ssZ", "sensor_data": { "temperature": { "value": "float", "unit": "Celsius" }, "humidity": { "value": "float", "unit": "Percentage" }, "methane_emissions": { "value": "float", "unit": "ppm" } }, "location": { "latitude": "float", "longitude": "float" }, "verified": "boolean" } `

2.4 Audit Trail Endpoint

To access audit trails for data submissions, DaedArch shall utilize the following endpoint:

Endpoint: ` GET /projects/{project_id}/data/{data_id}/audit `

Response: The response shall provide a detailed audit trail in the following format:

`json { "data_id": "{data_id}", "audit_trail": [ { "action": "submitted", "timestamp": "YYYY-MM-DDTHH:mm:ssZ", "user": "{user_id}" }, { "action": "verified", "timestamp": "YYYY-MM-DDTHH:mm:ssZ", "user": "{verifier_id}" } ] } `

Data Models

3.1 Data Schema Definitions

The following data models shall be adhered to for the submission of environmental data:

3.1.1 Sensor Data Model

• temperature:
• value: Float, representing the temperature measurement.
• unit: String, fixed value "Celsius".

• humidity:
• value: Float, representing the humidity measurement.
• unit: String, fixed value "Percentage".

• methane_emissions:
• value: Float, representing methane emissions in parts per million (ppm).
• unit: String, fixed value "ppm".

3.1.2 Location Data Model

• latitude: Float, representing the geographic latitude of the data collection point.
• longitude: Float, representing the geographic longitude of the data collection point.

3.2 Data Validation Rules

• All numerical values must be within the following ranges:
• Temperature: -40.0 to 50.0 degrees Celsius.
• Humidity: 0.0 to 100.0 percent.
• Methane Emissions: 0.0 to 5000.0 ppm.

• The timestamp shall be in ISO 8601 format (YYYY-MM-DDTHH:mm:ssZ).

• The verified field shall be a boolean indicating whether the data has been verified.

Error Handling

4.1 Standard Error Response Format

In the event of an error, the API shall return a standardized error response format:

`json { "status": "error", "error_code": "{error_code}", "message": "{error_message}" } `

4.2 Common Error Codes

• 400 Bad Request: The request was invalid or cannot be processed.
• 401 Unauthorized: Authentication failed or token expired.
• 403 Forbidden: The client does not have permission to access the resource.
• 404 Not Found: The specified resource could not be found.
• 500 Internal Server Error: An unexpected error occurred on the server.

4.3 Error Handling Procedures

DaedArch shall implement error handling procedures to capture and log error responses. Each error response should be logged with the following details:

• Timestamp of the error.
• Endpoint that generated the error.
• Request payload.
• Error response received.

Rate Limits

5.1 Rate Limiting Policy

To ensure fair usage and optimal performance, CAR shall enforce the following rate limits on API requests:

• Requests per minute: 60 requests
• Requests per hour: 1000 requests

5.2 Rate Limiting Response

If the rate limit is exceeded, the API shall return a 429 Too Many Requests response:

`json { "status": "error", "error_code": "429", "message": "Rate limit exceeded. Please try again later." } `

5.3 Rate Limit Monitoring

DaedArch shall monitor API usage and implement back-off strategies when approaching rate limits. Exponential back-off should be employed, where the client waits for an increasing amount of time before retrying failed requests.

Conclusion

This API Integration Specification outlines the necessary protocols and requirements for DaedArch Corporation to successfully integrate with the Climate Action Reserve's systems. Compliance with these specifications is mandatory to ensure data integrity, transparency, and adherence to CAR’s standards for carbon offset projects. All parties involved shall ensure ongoing communication and updates to this document as necessary to accommodate future changes in standards or technology.