> ## Documentation Index > Fetch the complete documentation index at: https://docs.connect.fastenhealth.com/llms.txt > Use this file to discover all available pages before exploring further. # Initiate Connection > This endpoint will generate a state value and redirect the user to their healthcare provider Patient Portal to authenticate with the healthcare provider's EHR. On completion, Fasten Connect will redirect the user back to your redirect_uri with an `org_connection_id` and `endpoint_id` query parameter. If an error occurred during the authentication process, Fasten Connect will redirect the user back with an `error` and `error_description` query parameter. If you have configured more than one Redirect URL in the Fasten Connect Portal, you **MUST** include the `redirect_uri` query parameter in the request. This is done automatically by the [Stitch SDK](stitch/v4/introduction) widget. In `test` mode, you can use the following credentials to test the Fasten Stitch component: | Source | Credentials / Sandbox Status | Link | | ---------------------------- | -------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------- | | AdvancedMD | Username:
Password: | | | Aetna | Username: `VTETestUser01`
Password: `FHIRdemo2020` | [test accounts](https://developerportal.aetna.com/sandbox_v2_test_member_logins_and_test_data_v2.1.xlsx) | | AllScripts | Username:
Password: | | | Anthem | Username: `HOSPatient`
Password: `HOSPatient2023` | | | AthenaHealth | Username: `phrtest_preview@mailinator.com`
Password: `Password1` | [test accounts](https://docs.athenahealth.com/api/guides/onboarding-overview) | | CareEvolution | Username: `CEPatient`
Password: `CEPatient2018` | [test accounts](https://fhir.careevolution.com/TestPatientAccounts.html) | | Cerner | Username: `nancysmart`
Password: `Cerner01` | [test accounts](https://docs.google.com/document/d/10RnVyF1etl_17pyCyK96tyhUWRbrTyEcqpwzW-Z-Ybs/edit) | | Cigna | Username: `syntheticuser05`
Password: `5ynthU5er5` | [test accounts](https://developer.cigna.com/service-apis/patient-access/sandbox#How-to-Use-the-Sandbox-Sandbox-Test-Users) | | DynamicHealthIT | Username:
Password: | | | eClinicalWorks/Healow | Username: `AdultFemaleFHIR`
Password: `e@CWFHIR1` | [test accounts](https://connect4.healow.com/apps/jsp/dev/r4/fhirClinicalDocumentation.jsp#SandboxTestingGuidelines) | | Epic | Username: `fhircamila`
Password: `epicepic1` | [test accounts](https://fhir.epic.com/Documentation?docId=testpatients) | | Flatiron/OncoEMR | Username:
Password: | | | HealthIT | Username: `demouser`
Password: `Demouser1!` | [test accounts](https://fhirsandbox.healthit.gov/secure/r4/view/userlogin.html) | | Humana | Username: `HUser00001`
Password: `PW00001!` | | | Kaiser | Username: `Pvaluser1`
Password: `V@lidation1` | | | Logica | Username:
Password: | | | MaximEyes | Username:
Password: | | | Medhost | Username:
Password: | | | Medicare | Username: `BBUser00000`
Password: `PW00000!` | [test accounts](https://bluebutton.cms.gov/developers/#developer-guidelines) | | Meditech | Username:
Password: | | | Netsmart | Username:
Password: | | | NextGen | Username: `patientapitest`
Password: `Password1!` | [test accounts](https://www.nextgen.com/-/media/files/api/nge-patient-api-auth-guide.pdf) | | PracticeFusion/PatientFusion | Username:
Password: | | | VA Health | Provider: ID.me
Username: `va.api.user+101-2024@gmail.com`
Password: `Password12345!!!` | [test accounts](https://developer.va.gov/explore/api/patient-health/test-users/3617/7058f75892b845dbbd3f371703cc066f398c336a87bb51d73128f1bac24e3105) | ## OpenAPI ````yaml GET /bridge/connect openapi: 3.0.1 info: title: Fasten Connect description: >- Useful links: - [Fasten Connect API repository](https://github.com/fastenhealth/fasten-connect-api) - [Fasten Connect Developer Portal](https://github.com/fastenhealth/fasten-connect-app) termsOfService: https://www.fastenhealth.com/ contact: email: connect@fastenhealth.com license: name: Private version: 1.0.11 servers: - url: https://api.connect.fastenhealth.com/v1/ description: Use this server for both live and test mode. security: [] tags: - name: auth description: Portal Authentication & Signup - name: user description: Operations about user - name: org description: Operations about organization - name: bridge description: Customer (organization) facing APIs - name: catalog description: Catalog APIs externalDocs: description: Find out more about Fasten Connect url: https://www.fastenhealth.com/ paths: /bridge/connect: get: tags: - bridge description: > This endpoint will generate a state value and redirect the user to their healthcare provider Patient Portal to authenticate with the healthcare provider's EHR. On completion, Fasten Connect will redirect the user back to your redirect_uri with an `org_connection_id` and `endpoint_id` query parameter. If an error occurred during the authentication process, Fasten Connect will redirect the user back with an `error` and `error_description` query parameter. If you have configured more than one Redirect URL in the Fasten Connect Portal, you **MUST** include the `redirect_uri` query parameter in the request. This is done automatically by the [Stitch SDK](stitch/v4/introduction) widget. parameters: - name: public_id in: query description: Public Key for Organization Credential required: true schema: type: string - name: endpoint_id in: query description: Catalog Endpoint Id required: true example: f4ea79fc-9a1b-43f0-be95-24247d666514 schema: type: string - name: brand_id in: query description: Catalog Brand Id required: true example: 5e3839ed-6ae1-472b-b4b8-b5df098443c7 schema: type: string - name: portal_id in: query description: Catalog Portal Id required: true example: d26f0b1c-82e7-4cb5-a4c4-55e73d48c016 schema: type: string - name: redirect_uri in: query description: >- Redirect URI (where the user will be redirected after authentication). Must match a `redirect_uri` provided in the Fasten Connect Portal. required: true example: https://www.example.com schema: type: string format: uri - name: external_id in: query description: >- An Opaque identifier, used to identify the patient in your system. This value will be returned in the Redirect URL response. required: false schema: type: string - name: external_state in: query description: >- An Opaque identifier, used to identify the connection request. This value should be unique. This value will be returned in the Redirect URL response. required: false schema: type: string responses: '302': description: Redirect headers: location: description: Setup state based redirect schema: oneOf: - type: string description: >- If configuration is correct and valid for endpoint, catalog, brand and public id, Fasten Connect will redirect to given redirect url ````