> ## Documentation Index > Fetch the complete documentation index at: https://docs.parmanasystems.com/llms.txt > Use this file to discover all available pages before exploring further. # List business signal sources > Lists every business signal source registration, active and revoked: the name a policy's `signalSources` uses, the HTTPS endpoint Parmana asks, and the Ed25519 key its answers must be signed with, if one is registered. ## OpenAPI ````yaml openapi.bundled.yaml GET /business-signal-sources openapi: 3.1.0 info: title: Parmana API version: 1.0.0 description: > Parmana sits between an AI agent and the systems it acts on. An agent sends a Business Transaction: who authorized it, what action it wants, and the facts that justify it. Parmana evaluates the policy bound to the action, checks any signed human approval the policy requires, releases the action to the connector only if the policy approves, and returns a signed Execution Trust Record anyone can verify. **Authentication.** Send `Authorization: Bearer ` on every request. The only routes that need no key are the probes, the documents and the independent verification routes: `GET /health`, `GET /ready`, `GET /openapi.yaml`, `GET /openapi.json`, `GET /api-manifest.json`, `GET /documentation`, `GET /reference`, `GET /parmana-handbook.pdf`, `GET /handbook/download-leads`, `POST /handbook/download-leads`, `POST /refusal/verify`, `POST /execution-intents/verify`, `POST /audit/verify`, `GET /keys/{keyId}` and `GET /.well-known/jwks.json`. A missing or unknown key returns `401` before anything else runs. The server holds only a hash of each key. See [Authentication](/api-reference/authentication). **Two kinds of key.** An agent or service key may invoke only the capabilities listed on it. A human key (`credentialHolderType: USER`) is required for governance: proposing and approving policies, approvers and external connectors, and repairing Execution Intents. Approving or rejecting a change also needs a step up authorization signed with the checker's own step up key, and the checker must not be the person who proposed it. **Ownership.** Every lookup by `businessTransactionId` is scoped to the key that submitted the transaction. A transaction submitted by another key returns the same `404` as one that does not exist. **Try it live.** The first server below is the public sandbox, `https://parmana-sandbox.vercel.app`: the same code as production with its own database, keys and demo approver, whose one action, `sandbox:receipt`, acts on nothing. Every "Try it" panel calls it with the published demo key prefilled. The demo key may invoke only `sandbox:receipt`, so other capabilities return `403` and governance routes return `403 NON_HUMAN_CALLER_DENIED`. Everything sent to the sandbox is visible to every visitor. See [Playground](/playground). Production needs a key issued by its operator. **Start here:** the [Playground](/playground) (no install), the [Quickstart](/quickstart), then [Integrate Parmana](/agents/integrate) for agents and [Connect any external system](/guides/connect-any-external-system) for your own endpoint. contact: name: Parmana Systems email: founder@parmanasystems.com license: name: Proprietary, source-available for evaluation only, see LICENSE url: https://github.com/pavancharak/parmana/blob/main/LICENSE servers: - url: https://parmana-sandbox.vercel.app description: >- Public sandbox (the docs playground). Same code as production, demo data only, acts on nothing. Demo key prefilled. - url: https://parmana-api-real.vercel.app description: Production. Needs a key issued by the operator. - url: http://localhost:3000 description: Local (packages/api, PORT env var, default 3000) security: - bearerAuth: [] tags: - name: Execution description: >- Executes a Business Transaction through the complete Execution Trust pipeline - name: Transactions description: Business Transaction creation and retrieval - name: Verification description: Deterministic verification of an Execution Trust Record - name: Receipts description: Cryptographically signed Execution Trust Receipts - name: Trust Records description: Execution Trust Record retrieval - name: Replay description: Deterministic replay of a recorded Execution Trust Record - name: Policies description: Policy existence/readability check - name: Policy Governance description: Maker-checker proposal, listing, approval, and rejection of policy changes - name: Approvers description: Maker-checker for the keys trusted to sign approvals, without a deploy - name: External Connectors description: >- Maker-checker for binding a capability to an operator's HTTPS endpoint and its policy, without a deploy (ADR-0013) - name: Business Signal Sources description: >- Maker-checker for the business systems Parmana asks for the facts a policy needs, without a deploy (RFC-0023) - name: Authority Grants description: >- Maker-checker for which agent may have which action decided, within which limits, until when (RFC-0023) - name: Sandbox description: >- Routes that exist only on the public sandbox (ADR-0014), for trying Parmana from a browser - name: Refusal Records description: >- Durable, signed evidence that a policy decision rejected a transaction (RFC-0021) - name: Execution Intents description: >- A signed statement, stored before an action is released, of exactly what is about to be released, plus the operator tools to find and repair a released action that has no signed Trust Record (ADR-0012) - name: Audit description: >- Signed caller-authentication audit events, independently third-party-verifiable - name: System description: Operational endpoints paths: /business-signal-sources: get: tags: - Business Signal Sources summary: List business signal sources description: > Lists every business signal source registration, active and revoked: the name a policy's `signalSources` uses, the HTTPS endpoint Parmana asks, and the Ed25519 key its answers must be signed with, if one is registered. Revoked registrations stay listed, so every Trusted Signal ever recorded can be traced to the registration that produced it. Needs a human key. See [Connect a business system as a signal source](/guides/connect-a-business-signal-source). operationId: listBusinessSignalSources responses: '200': description: The registrations. content: application/json: schema: $ref: >- #/components/schemas/business-signal-sources-list-response.schema examples: active: summary: Real captured response value: sources: - registrationId: 5ba7d3a6-d56d-4e90-b588-402d44aeee0c name: erp endpointUrl: https://orders.example.com/parmana/signals timeoutMs: 5000 publicKeyPem: > -----BEGIN PUBLIC KEY----- MCowBQYDK2VwAyEAsgWd/PtRf9OsENif9bgJegghUpmEOOZN5NROxc3zpPc= -----END PUBLIC KEY----- keyId: erp-2026-10 status: active registeredAt: '2026-10-11T02:58:24.745Z' withRevoked: summary: >- Real captured response, after a revoke: the registration stays listed value: sources: - registrationId: 5ba7d3a6-d56d-4e90-b588-402d44aeee0c name: erp endpointUrl: https://orders.example.com/parmana/signals timeoutMs: 5000 publicKeyPem: > -----BEGIN PUBLIC KEY----- MCowBQYDK2VwAyEAsgWd/PtRf9OsENif9bgJegghUpmEOOZN5NROxc3zpPc= -----END PUBLIC KEY----- keyId: erp-2026-10 status: revoked registeredAt: '2026-10-11T02:58:24.745Z' revokedByChangeId: 92ba551c-02bb-4089-9762-6d2d3a89392e revokedAt: '2026-10-11T02:58:24.800Z' '401': $ref: '#/components/responses/Unauthorized' '403': description: '`NON_HUMAN_CALLER_DENIED`: this needs a human key.' content: application/json: schema: $ref: '#/components/schemas/error.schema' examples: service: summary: Real captured response, a service credential value: error: >- This action requires a caller credential provisioned as a verified human (credentialHolderType: USER). code: NON_HUMAN_CALLER_DENIED x-codeSamples: - lang: bash label: cURL source: |- curl https://parmana-api-real.vercel.app/business-signal-sources \ -H "Authorization: Bearer $PARMANA_API_KEY" - lang: typescript label: TypeScript source: |- import { ParmanaClient } from "@parmana/sdk"; const client = new ParmanaClient({ endpoint: "https://parmana-api-real.vercel.app", apiKey: process.env.PARMANA_API_KEY!, }); for (const source of await client.businessSignalSources()) { console.log(source.name, source.status, source.endpointUrl); } - lang: python label: Python source: |- import os from parmana import ParmanaClient client = ParmanaClient( endpoint="https://parmana-api-real.vercel.app", api_key=os.environ["PARMANA_API_KEY"], ) for source in client.list_business_signal_sources(): print(source.name, source.status, source.endpoint_url) components: schemas: business-signal-sources-list-response.schema: title: Business Signal Sources List Response description: >- Response of GET /business-signal-sources: every registration, active and revoked. type: object additionalProperties: false required: - sources properties: sources: type: array items: $ref: '#/components/schemas/business-signal-source.schema' error.schema: title: Error Response description: >- Shared error envelope produced by packages/api/src/middleware/error-handler.ts and by every route's inline validation checks. error is always a plain human-readable string (never a nested object). code is present only when the failure was a RuntimeError subclass reaching the centralized error handler (VerificationFailedError, ReceiptGenerationError, or an uncategorized RuntimeError); it is absent from every inline route-level check (businessTransactionId format/required checks) and from BusinessTransactionValidationError, PolicyValidationError, SignalValidationError, PolicyNotFoundError, DuplicateBusinessTransactionError, and the generic 500 fallback. POST /policies/validate does NOT use this envelope at all. See its own response schema. For the triggering condition and recommended caller action behind any specific error/code/status combination, see the Error catalog at /api-reference/error-catalog. type: object additionalProperties: false required: - error properties: error: type: string description: Human-readable error message. code: type: string description: >- Stable machine-readable error code. Only present for errors that reach the handler as a RuntimeError. examples: - RUNTIME_ERROR - VERIFICATION_FAILED - RECEIPT_GENERATION_FAILED - POLICY_DENIED - CAPABILITY_NOT_ALLOWED - RATE_LIMITED - AUDIT_UNAVAILABLE - SIGNING_UNAVAILABLE - CONNECTOR_NOT_REGISTERED - EXECUTION_RECORD_INCOMPLETE - EXECUTION_INTENT_UNAVAILABLE - EXECUTION_INTENT_RESULT_NOT_RECORDED - EXECUTION_INTENT_NOT_FOUND - EXECUTION_INTENTS_NOT_ENABLED - EXECUTION_INTENT_NOT_RESOLVABLE - EXECUTION_INTENT_RESOLUTION_INVALID - NON_HUMAN_CALLER_DENIED - EXECUTION_OUTCOME_UNKNOWN - AUTHORIZATION_NO_LONGER_VALID executionStatus: type: string enum: - EXECUTION_UNKNOWN - NOT_EXECUTED description: >- RFC-0023 phase 4. EXECUTION_UNKNOWN with EXECUTION_OUTCOME_UNKNOWN: the action was released and the call failed, so whether it ran is unknown; never reported as failed, and the Execution Intent stays ERRORED until a person resolves it. NOT_EXECUTED with AUTHORIZATION_NO_LONGER_VALID: the release was refused because a business condition or the authority grant it rested on no longer held, and nothing was sent. examples: - error: businessTransactionId must be a valid UUID. - error: >- Business Transaction 'eed2a972-1bf5-4166-8472-761f76fbf1b2' already exists. - error: >- Execution rejected: Vendor payment rejected because the assessed payment risk exceeds the maximum permitted threshold. code: RUNTIME_ERROR business-signal-source.schema: title: Business Signal Source description: >- A business system Parmana asks for the facts a policy declares in signalSources (RFC-0023), registered through business signal source changes. Nothing is deleted: a revoked registration stays listed. type: object additionalProperties: false required: - registrationId - name - endpointUrl - timeoutMs - status - registeredAt properties: registrationId: type: string description: The changeId of the approved register change that created it. name: type: string pattern: ^[a-z0-9][a-z0-9-]{0,62}$ description: The name a policy's signalSources uses in `source`. endpointUrl: type: string description: >- The HTTPS endpoint Parmana posts each signed query to. It is the query's audience. timeoutMs: type: integer publicKeyPem: type: string description: >- The Ed25519 public key, SPKI PEM, the source signs its answers with. When present, an answer without a valid signature is refused as SOURCE_UNAVAILABLE. keyId: type: string pattern: ^[A-Za-z0-9._-]{1,128}$ description: >- A label for publicKeyPem. When present, an answer signed under another keyId is refused. status: type: string enum: - active - revoked description: At most one active registration per name. registeredAt: type: string format: date-time revokedByChangeId: type: string description: 'revoked only: the approved change that revoked it.' revokedAt: type: string format: date-time description: revoked only. responses: Unauthorized: description: >- The `Authorization` header is missing, is not a bearer key, or names a key the server does not know. Nothing ran. Send a valid key. content: application/json: schema: $ref: '#/components/schemas/error.schema' examples: authRequired: summary: Real captured response, missing or invalid Authorization header value: error: authentication required securitySchemes: bearerAuth: type: http scheme: bearer x-default: 2VfYWCzt_cBAPK-8uufX6ordfY2JuQhFPsohuEumKME description: > Caller API key issued by scripts/generate-api-key.ts. Sent as Authorization: Bearer . Verified against a stored SHA-256 hash in constant time by packages/api/src/auth/StaticKeyAuthenticator.ts. Required on every route not listed as exempt in this document's top-level description. See /api-reference/authentication. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.