Auxen Inference API
The Inference API from Auxen — 2 operation(s) for inference.
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OpenAPI Specification
openapi: 3.2.0
info:
title: Auxen Headless Inference API
version: 1.3.0
description: 'Programmatic API for Auxen: hire and manage AI workers (`/v1/workers`,
`/v1/connections`, approvals; also over MCP and A2A), and deploy and
manage private open-weight model endpoints. Anything a human can do in
the dashboard, an agent can do via this API.
**Two key types:**
- `auxen_live_…` / `auxen_test_…` — your account-level **agent management**
key. Authorizes deploying, switching models, and billing operations.
- `auxk_…` — a per-deployment **inference** key returned in the `api_key`
field of every deployment object. Authorizes inference calls on that
deployment only. Hand it to downstream services without giving up
management rights.
**Billing:**
All Auxen deployments are billed **pay-as-you-go** from a prepaid USD credit
balance, per minute of active time; billing stops when a deployment is
paused or deleted. Throughput levels (Standard, Double, Quad, Max)
increase simultaneous request handling at the same model quality. Top up
the balance with `POST /v1/billing/add-credits`.
**2026 renames:** `/v1/provision` → `/v1/deploy`, `/v1/instances` →
`/v1/deployments`, `/scale` → `/throughput`, `/wake` → `/resume`.
Old routes keep working until 2027-04-02 and send `Deprecation`,
`Sunset`, and `Link` headers. Responses carry new and old field names
side by side (`deployment_id` + `instance_id`, `throughput` +
`capacity`, `rate_per_hour` + `hourly_rate`, `ready_estimate` +
`estimated_ready_at`). Migration guide: https://auxen.ai/docs/api/migration'
contact:
email: hello@auxen.ai
url: https://auxen.ai/contact
servers:
- url: https://api.auxen.ai
description: Production
tags:
- name: Inference
paths:
/v1/{deploymentId}/chat:
post:
summary: Inference (Auxen-native)
tags:
- Inference
security:
- DeploymentKey: []
parameters:
- name: deploymentId
in: path
required: true
schema:
type: string
pattern: ^inst_[0-9a-f]+$
example: inst_07d7eab4fabc
requestBody:
required: true
content:
application/json:
schema:
type: object
required:
- message
properties:
message:
type: string
example: Hello!
system:
type: string
history:
type: array
items:
type: object
properties:
role:
enum:
- user
- assistant
- system
content:
type: string
stream:
type: boolean
default: false
options:
type: object
properties:
temperature:
type: number
num_predict:
type: integer
responses:
'200':
description: OK (non-streaming)
content:
application/json:
schema:
type: object
properties:
success:
type: boolean
const: true
data:
type: object
properties:
message:
type: string
model:
type: string
usage:
type: object
properties:
prompt_tokens:
type: integer
completion_tokens:
type: integer
total_tokens:
type: integer
response_time_ms:
type: integer
meta:
$ref: '#/components/schemas/Meta'
required:
- success
- data
- meta
'401':
$ref: '#/components/responses/Unauthorized'
'409':
description: Deployment not ready yet — poll until status is ready.
operationId: postV1ByDeploymentIdChat
x-operation-id-source: derived
/v1/{deploymentId}/v1/chat/completions:
post:
summary: Inference (OpenAI-compatible)
description: 'Drop-in replacement for `POST https://api.openai.com/v1/chat/completions`. Point any OpenAI SDK at `https://api.auxen.ai/v1/{deploymentId}/v1` as the base URL and use the deployment''s `auxk_` key — no other code changes required. Supports streaming via `stream: true`.'
tags:
- Inference
security:
- DeploymentKey: []
parameters:
- name: deploymentId
in: path
required: true
schema:
type: string
pattern: ^inst_[0-9a-f]+$
example: inst_07d7eab4fabc
requestBody:
required: true
content:
application/json:
schema:
type: object
required:
- messages
properties:
messages:
type: array
items:
type: object
properties:
role:
enum:
- user
- assistant
- system
content:
type: string
stream:
type: boolean
temperature:
type: number
max_tokens:
type: integer
top_p:
type: number
seed:
type: integer
responses:
'200':
description: Standard OpenAI chat.completion envelope.
operationId: postV1ByDeploymentIdV1ChatCompletions
x-operation-id-source: derived
components:
schemas:
Meta:
type: object
properties:
requestId:
type: string
example: req_abcdef0123456789
timestamp:
type: string
format: date-time
Error401:
type: object
properties:
success:
type: boolean
const: false
error:
type: object
properties:
code:
type: string
example: DEPLOYMENT_NOT_FOUND
message:
type: string
docs:
type: string
format: uri
legacy_code:
type: string
description: 'On /v1/deployments/* routes: the pre-2026 name of a renamed code (e.g. INSTANCE_NOT_FOUND). Present until 2027-04-02.'
renamed_to:
type: string
description: 'On deprecated routes: the new name of a renamed code (e.g. DEPLOYMENT_NOT_FOUND).'
required:
- code
- message
- docs
meta:
$ref: '#/components/schemas/Meta'
required:
- success
- error
- meta
responses:
Unauthorized:
description: Missing or invalid API key.
content:
application/json:
schema:
$ref: '#/components/schemas/Error401'
securitySchemes:
AgentKey:
type: http
scheme: bearer
bearerFormat: auxen_live_xxx | auxen_test_xxx
description: Account-level key. Generate at /dashboard/api-keys.
DeploymentKey:
type: http
scheme: bearer
bearerFormat: auxk_xxx
description: Per-deployment key from the `api_key` field of a deployment object.