> ## Documentation Index > Fetch the complete documentation index at: https://aisa.one/docs/llms.txt > Use this file to discover all available pages before exploring further. > ## Agent Instructions > - Base URLs: models `https://api.aisa.one/v1` (Gemini GenerateContent: `https://api.aisa.one/v1beta`); data APIs `https://api.aisa.one/apis/v1`. The `servers` of each operation in https://aisa.one/openapi.yaml is authoritative. > - Auth: `Authorization: Bearer $AISA_API_KEY`. Never print, log, or commit the key. > - MCP (preferred for agents): `https://mcp.aisa.one/mcp`, signed in with OAuth, so there is no key to paste. > - Agent Skill: `npx skills add AIsa-team/agent-skills --skill aisa`. Fallback with the AIsa CLI: `aisa skills install aisa`. > - Spending: docs, https://aisa.one/models, https://aisa.one/api, `/v1/models`, and MCP `search`, `list_categories`, `get_details`, `batch_quote`, and the `account` operation are free. Quote the exact calls before running them (MCP `batch_quote`, CLI `aisa quote --json`). If the quote reports `auto_execute_eligible: true`, run it unless the user set a tighter limit or asked only for a quote. Otherwise, tell the user in one message the planned calls, the quoted price, and a total USD budget for the task, then wait for approval. Direct HTTP calls follow the stricter rule at https://aisa.one/docs/get-started/cli.md#direct-http-fallback. Do not make paid calls to test availability. Full rule: https://aisa.one/llms.txt # Design Voice > Usage-based billing; Default request estimate: $0.0103 USD (not a fixed price). Declared unit rate: $0.000001 USD per provider_credit. Account-specific pricing and final settlement may differ. ## Request contract * **Method and path:** POST /apis/v1/fish-audio/design-voice * **Availability:** enabled * **Request URL template:** `https://api.aisa.one/apis/v1/fish-audio/design-voice` * **Runtime facts:** d8d047a01a3626c21f3d1e444db270f6163475015155b71fdf3b12df8130d7ad [Complete OpenAPI definition](https://aisa.one/docs/reference-contracts/fish-audio.json) Effective request and pricing declaration (including authentication and referenced schemas): ```json theme={null} { "operationId": "fish-audio.design-voice", "method": "POST", "path": "/apis/v1/fish-audio/design-voice", "servers": [ { "url": "https://api.aisa.one" } ], "parameters": [], "security": [ { "bearerAuth": [] } ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "type": "object", "required": [ "instruction" ], "properties": { "n": { "type": "integer", "default": 2, "maximum": 4, "minimum": 1, "description": "Number of voice candidates (1–4); the request is billed once." }, "seed": { "type": "integer", "description": "Optional deterministic generation seed." }, "speed": { "type": "number", "default": 1, "maximum": 3, "description": "Preview speaking speed multiplier, greater than zero and at most 3.", "exclusiveMinimum": 0 }, "language": { "type": "string", "description": "Optional BCP-47 language hint, such as en or ja." }, "num_step": { "type": "integer", "default": 32, "maximum": 128, "minimum": 1, "description": "Number of diffusion steps (1–128)." }, "instruction": { "type": "string", "maxLength": 2000, "minLength": 1, "description": "Describe the desired original voice; do not impersonate an identifiable person." }, "guidance_scale": { "type": "number", "default": 2, "minimum": 0, "description": "Nonnegative classifier-free guidance scale." }, "reference_text": { "type": "string", "maxLength": 150, "description": "Optional preview text, up to 150 characters." }, "instruct_guidance_scale": { "type": "number", "default": 0, "minimum": 0, "description": "Nonnegative instruction guidance scale." } } } } } }, "x-aisa-status": "enabled", "x-aisa-pricing": { "cost_contract": "response_units", "customer_multiplier": 1.0, "customer_pricing": "provider_cost_multiplier", "default_request_estimate_usd": 0.0103, "estimate_source": "profile_seed", "evidence_source": "response_body", "maximum_units": 10000000, "unit": "provider_credit", "unit_rate_usd": 1e-06 }, "components": { "securitySchemes": { "bearerAuth": { "scheme": "bearer", "type": "http" } } } } ``` ## Cost and request rules Usage-based billing; Default request estimate: \$0.0103 USD (not a fixed price). Declared unit rate: \$0.000001 USD per provider\_credit. Account-specific pricing and final settlement may differ. Published reference values are not an account-specific quote or a settled charge. For endpoints supporting X-AISA-Cost-Mode: quote, obtain a free quote for your exact request before execution; reconcile the settled cost with response metadata and Usage Logs. USD amounts use 1,000,000 integer micro-USD per dollar. * **Default request reference estimate (USD):** 0.0103 * **Declared unit rate (USD):** 1e-06 * **Billing unit:** provider\_credit * **Cost contract:** response\_units * **Published reference multiplier:** 1.0 * **Declared maximum count/units:** 10000000 * **Settlement evidence source:** response\_body ## OpenAPI ````yaml reference-contracts/fish-audio.json POST /apis/v1/fish-audio/design-voice openapi: 3.1.0 info: description: '' title: Fish Audio version: '1' x-aisa-capabilities: idempotency: Idempotency-Key max_price: X-AISA-Max-Price-USD quote: header: X-AISA-Cost-Mode value: quote x-aisa-configured-paths: - /apis/v1/fish-audio/design-voice - /apis/v1/fish-audio/tts-s2-1-pro x-aisa-document: facts_hash: d8d047a01a3626c21f3d1e444db270f6163475015155b71fdf3b12df8130d7ad generator_version: '3' protocol_version: '1' schema_version: '1' composer_version: '28' response_pending: [] document_hash: sha256:5a42422eda0230c99955e1e806c93cc92a1f8a8d62399bdc78bebc5f5fe25d65 x-aisa-plans: builder: 1 display_plan: payg payg: 1 similarweb_payg: 1 team: 1 version: e70a0959cd1b93b84ae16dffd7a538273ddb9c1d46277b82823c37ff1b6bc0fb x-aisa-provider: fish-audio x-aisa-catalogs: fish-audio: title: Fish Audio description: '' x-aisa-document: facts_hash: d8d047a01a3626c21f3d1e444db270f6163475015155b71fdf3b12df8130d7ad generator_version: '3' protocol_version: '1' schema_version: '1' x-aisa-plans: builder: 1 display_plan: payg payg: 1 similarweb_payg: 1 team: 1 version: e70a0959cd1b93b84ae16dffd7a538273ddb9c1d46277b82823c37ff1b6bc0fb x-aisa-capabilities: idempotency: Idempotency-Key max_price: X-AISA-Max-Price-USD quote: header: X-AISA-Cost-Mode value: quote servers: - url: https://api.aisa.one security: - bearerAuth: [] paths: /apis/v1/fish-audio/design-voice: post: tags: - Fish Audio summary: Design Voice description: >- Usage-based billing; Default request estimate: $0.0103 USD (not a fixed price). Declared unit rate: $0.000001 USD per provider_credit. Account-specific pricing and final settlement may differ. operationId: fish-audio.design-voice requestBody: required: true content: application/json: schema: type: object required: - instruction properties: 'n': type: integer default: 2 maximum: 4 minimum: 1 description: >- Number of voice candidates (1–4); the request is billed once. seed: type: integer description: Optional deterministic generation seed. speed: type: number default: 1 maximum: 3 description: >- Preview speaking speed multiplier, greater than zero and at most 3. exclusiveMinimum: 0 language: type: string description: Optional BCP-47 language hint, such as en or ja. num_step: type: integer default: 32 maximum: 128 minimum: 1 description: Number of diffusion steps (1–128). instruction: type: string maxLength: 2000 minLength: 1 description: >- Describe the desired original voice; do not impersonate an identifiable person. guidance_scale: type: number default: 2 minimum: 0 description: Nonnegative classifier-free guidance scale. reference_text: type: string maxLength: 150 description: Optional preview text, up to 150 characters. instruct_guidance_scale: type: number default: 0 minimum: 0 description: Nonnegative instruction guidance scale. responses: '200': description: Tool result data content: application/json: schema: $ref: >- #/components/schemas/Response576A0Ea506F3_connect_FISH_AUDIO_DESIGN_VOICE__output__public_data default: content: application/json: schema: {} description: >- Error response; upstream passthrough responses may use provider formats components: schemas: Response576A0Ea506F3_connect_FISH_AUDIO_DESIGN_VOICE__output__public_data: $ref: >- #/components/schemas/Response576A0Ea506F3_connect_FISH_AUDIO_DESIGN_VOICE__output__7eabda0beae3c996 Response576A0Ea506F3_connect_FISH_AUDIO_DESIGN_VOICE__output__7eabda0beae3c996: type: object required: - candidates properties: candidates: type: array items: $ref: >- #/components/schemas/Response576A0Ea506F3_connect_FISH_AUDIO_DESIGN_VOICE__output__65c31e1293d3cd8f Response576A0Ea506F3_connect_FISH_AUDIO_DESIGN_VOICE__output__65c31e1293d3cd8f: type: object required: - id - index - audio_base64 - sample_rate - duration_ms properties: id: type: string text: type: string index: type: integer minimum: 0 instruct: type: string language: type: string duration_ms: type: integer minimum: 0 sample_rate: type: integer exclusiveMinimum: 0 audio_base64: type: string securitySchemes: bearerAuth: scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.