> ## Documentation Index > Fetch the complete documentation index at: https://docs.terrapinfinance.com/llms.txt > Use this file to discover all available pages before exploring further. # Government Yield Curve > Retrieve government yield curve points for a given date, region, and curve type. Benchmark curve returns the EoD yields of the benchmark instruments, and their respective years to maturity. Zero curve returns the zero rates (or term rates) at exact tenors. The zero curve is constructed via monotone convex bootstrapping of available EoD trades for benchmark instruments. Due to a lack of available EoD trades for very short maturity bills, the earliest tenor available starts at 1 year. Par curve returns the par yields at exact tenors. The par curve is derived from the zero curve. ## OpenAPI ````yaml post /api/v1/government_yield_curve openapi: 3.0.0 info: title: Terrapin API version: 1.0.0 servers: - url: https://terrapinfinance.com variables: {} security: - authorization: [] tags: [] paths: /api/v1/government_yield_curve: post: tags: [] summary: Government yield curve description: > Retrieve government yield curve points for a given date, region, and curve type. Benchmark curve returns the EoD yields of the benchmark instruments, and their respective years to maturity. Zero curve returns the zero rates (or term rates) at exact tenors. The zero curve is constructed via monotone convex bootstrapping of available EoD trades for benchmark instruments. Due to a lack of available EoD trades for very short maturity bills, the earliest tenor available starts at 1 year. Par curve returns the par yields at exact tenors. The par curve is derived from the zero curve. operationId: government_yield_curve parameters: [] requestBody: content: application/json: example: date: '2026-07-23' region: us type: par schema: additionalProperties: false properties: date: description: Curve date in ISO-8601 format (YYYY-MM-DD). format: date nullable: false type: string x-struct: null x-validate: null region: description: Region for which to retrieve the curve. enum: - de - uk - us nullable: false type: string x-struct: null x-validate: null type: description: > Curve type: - `zero`: zero curve. Lists zero rates at exact tenors. - `par`: par yield curve. Lists par yields at exact tenors. - `benchmark`: benchmark, or 'actives' curve. Lists benchmark instrument yields, and their exact years to maturity. enum: - benchmark - par - zero nullable: false type: string x-struct: null x-validate: null required: - date - region - type type: object x-struct: null x-validate: null required: true responses: '200': content: application/json: example: data: - rate: 4.135 years_to_maturity: 1 - rate: 4.348 years_to_maturity: 2 - rate: 4.386 years_to_maturity: 3 - rate: 4.455 years_to_maturity: 5 - rate: 4.57 years_to_maturity: 7 - rate: 4.702 years_to_maturity: 10 - rate: 5.047 years_to_maturity: 15 - rate: 5.158 years_to_maturity: 30 - rate: 5.193 years_to_maturity: 25 - rate: 5.198 years_to_maturity: 20 total: 10 schema: additionalProperties: false properties: data: description: List of response data objects, often capped to 1000. items: additionalProperties: false properties: rate: description: Rate in percent (e.g. 4.0 for 4%). example: 3.852 nullable: false type: number x-struct: null x-validate: null years_to_maturity: description: Years to maturity from the curve date. example: 2 nullable: false type: number x-struct: null x-validate: null required: - rate - years_to_maturity type: object x-struct: null x-validate: null type: array x-struct: null x-validate: null total: description: >- Total number of results in the database that match the query filters. type: integer x-struct: null x-validate: null required: - data - total title: GovernmentYieldCurveResponse type: object x-struct: null x-validate: null description: Government yield curve '401': content: application/json: schema: additionalProperties: false properties: errors: items: additionalProperties: false properties: detail: example: Unauthorized type: string x-struct: null x-validate: null reason: example: >- Your account tier does not allow this operation. Contact team@terrapinfinance.com for an upgrade. type: string x-struct: null x-validate: null required: - detail type: object x-struct: null x-validate: null type: array x-struct: null x-validate: null required: - errors type: object x-struct: null x-validate: null description: Unauthorized '402': content: application/json: schema: additionalProperties: false properties: errors: items: additionalProperties: false properties: detail: example: Payment Required type: string x-struct: null x-validate: null reason: example: >- You have run out of your granted quota for this resource as defined by your account tier. Contact team@terrapinfinance.com for an upgrade. type: string x-struct: null x-validate: null required: - detail type: object x-struct: null x-validate: null type: array x-struct: null x-validate: null required: - errors type: object x-struct: null x-validate: null description: Payment Required '403': content: application/json: schema: additionalProperties: false properties: errors: items: additionalProperties: false properties: detail: example: Forbidden type: string x-struct: null x-validate: null reason: example: >- Your account tier does not allow this operation. Contact team@terrapinfinance.com for an upgrade. type: string x-struct: null x-validate: null required: - detail type: object x-struct: null x-validate: null type: array x-struct: null x-validate: null required: - errors type: object x-struct: null x-validate: null description: Forbidden '422': content: application/json: schema: properties: errors: items: properties: detail: example: 'Invalid string. Got: integer' type: string x-struct: null x-validate: null source: properties: pointer: example: /isins/0 type: string x-struct: null x-validate: null required: - pointer type: object x-struct: null x-validate: null title: example: Invalid value type: string x-struct: null x-validate: null required: - detail - source - title type: object x-struct: null x-validate: null type: array x-struct: null x-validate: null required: - errors type: object x-struct: null x-validate: null description: Unprocessable Entity '429': content: application/json: schema: additionalProperties: false properties: errors: items: additionalProperties: false properties: detail: example: Too Many Requests type: string x-struct: null x-validate: null reason: type: string x-struct: null x-validate: null required: - detail type: object x-struct: null x-validate: null type: array x-struct: null x-validate: null required: - errors type: object x-struct: null x-validate: null description: Too Many Requests '500': content: application/json: schema: additionalProperties: false properties: errors: items: additionalProperties: false properties: detail: example: Internal Server Error type: string x-struct: null x-validate: null reason: type: string x-struct: null x-validate: null required: - detail type: object x-struct: null x-validate: null type: array x-struct: null x-validate: null required: - errors type: object x-struct: null x-validate: null description: Internal Server Error callbacks: {} components: securitySchemes: authorization: scheme: bearer type: http ````