LLM API

Upsert route

PUT/v1/llm-routes

Request body

Field	Type	Notes
`phone_number_id`	string	len 1..∞
`provider`required	"anthropic" \| "openai"
`model`required	string	len 1..∞
`api_key`required	string	len 10..∞
`system_prompt`required	string	len 40..∞
`max_tokens`	integer	range 1..4096
`temperature`	number	range 0..2
`daily_cost_cap_brl`	string	pattern: ^\d+(\.\d{1,2})?$
`handoff_phrases`	string[]
`blocked_topics`	object[]
`blocked_topic_fallback_response`	string	len 1..1000
`max_context_messages`	integer	range 1..100
`max_context_age_seconds`	integer \| null
`memory_persistence`	"disabled" \| "opt_in" \| "opt_out"
`enabled`	boolean

Response

Field	Type	Notes
`id`required	string
`object`required	"llm_route"
`phone_number_id`required	string \| null
`provider`required	"anthropic" \| "openai"
`model`required	string
`environment`required	"sandbox" \| "production"
`system_prompt`required	string
`current_prompt_version`required	integer	range -∞..9007199254740991
`max_tokens`required	integer	range -∞..9007199254740991
`temperature`required	string
`daily_cost_cap_brl`required	string \| null
`handoff_phrases`required	string[]
`blocked_topics`required	object[]
`blocked_topic_fallback_response`required	string
`max_context_messages`required	integer	range -∞..9007199254740991
`max_context_age_seconds`required	integer \| null
`memory_persistence`required	"disabled" \| "opt_in" \| "opt_out"
`enabled`required	boolean
`api_key_suffix`required	string
`created_at`required	string<ISO-8601>	pattern: ^(?:(?:\d\d[2468][048]\|\d\d[13579][26]\|\d\d0[48]\|[02468][048]00\|[13579][26]00)-02-29\|\d{4}-(?:(?:0[13578]\|1[02])-(?:0[1-9]\|[12]\d\|3[01])\|(?:0[469]\|11)-(?:0[1-9]\|[12]\d\|30)\|(?:02)-(?:0[1-9]\|1\d\|2[0-8])))T(?:(?:[01]\d\|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z\|([+-](?:[01]\d\|2[0-3]):[0-5]\d)))$
`updated_at`required	string<ISO-8601>	pattern: ^(?:(?:\d\d[2468][048]\|\d\d[13579][26]\|\d\d0[48]\|[02468][048]00\|[13579][26]00)-02-29\|\d{4}-(?:(?:0[13578]\|1[02])-(?:0[1-9]\|[12]\d\|3[01])\|(?:0[469]\|11)-(?:0[1-9]\|[12]\d\|30)\|(?:02)-(?:0[1-9]\|1\d\|2[0-8])))T(?:(?:[01]\d\|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z\|([+-](?:[01]\d\|2[0-3]):[0-5]\d)))$

Get route

GET/v1/llm-routes

Query

Field	Type	Notes
`phone_number_id`	string	len 1..∞

Response

Field	Type	Notes
`id`required	string
`object`required	"llm_route"
`phone_number_id`required	string \| null
`provider`required	"anthropic" \| "openai"
`model`required	string
`environment`required	"sandbox" \| "production"
`system_prompt`required	string
`current_prompt_version`required	integer	range -∞..9007199254740991
`max_tokens`required	integer	range -∞..9007199254740991
`temperature`required	string
`daily_cost_cap_brl`required	string \| null
`handoff_phrases`required	string[]
`blocked_topics`required	object[]
`blocked_topic_fallback_response`required	string
`max_context_messages`required	integer	range -∞..9007199254740991
`max_context_age_seconds`required	integer \| null
`memory_persistence`required	"disabled" \| "opt_in" \| "opt_out"
`enabled`required	boolean
`api_key_suffix`required	string
`created_at`required	string<ISO-8601>	pattern: ^(?:(?:\d\d[2468][048]\|\d\d[13579][26]\|\d\d0[48]\|[02468][048]00\|[13579][26]00)-02-29\|\d{4}-(?:(?:0[13578]\|1[02])-(?:0[1-9]\|[12]\d\|3[01])\|(?:0[469]\|11)-(?:0[1-9]\|[12]\d\|30)\|(?:02)-(?:0[1-9]\|1\d\|2[0-8])))T(?:(?:[01]\d\|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z\|([+-](?:[01]\d\|2[0-3]):[0-5]\d)))$
`updated_at`required	string<ISO-8601>	pattern: ^(?:(?:\d\d[2468][048]\|\d\d[13579][26]\|\d\d0[48]\|[02468][048]00\|[13579][26]00)-02-29\|\d{4}-(?:(?:0[13578]\|1[02])-(?:0[1-9]\|[12]\d\|3[01])\|(?:0[469]\|11)-(?:0[1-9]\|[12]\d\|30)\|(?:02)-(?:0[1-9]\|1\d\|2[0-8])))T(?:(?:[01]\d\|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z\|([+-](?:[01]\d\|2[0-3]):[0-5]\d)))$

Update route

PATCH/v1/llm-routes

Updates only the supplied fields. Use phone_number_id to target a number-specific route; omit it for the environment default.

Query

Field	Type	Notes
`phone_number_id`	string	len 1..∞

Request body

Field	Type	Notes
`model`	string	len 1..∞
`api_key`	string	len 10..∞
`system_prompt`	string	len 40..∞
`max_tokens`	integer	range 1..4096
`temperature`	number	range 0..2
`daily_cost_cap_brl`	string \| null
`handoff_phrases`	string[]
`blocked_topics`	object[]
`blocked_topic_fallback_response`	string	len 1..1000
`max_context_messages`	integer	range 1..100
`max_context_age_seconds`	integer \| null
`memory_persistence`	"disabled" \| "opt_in" \| "opt_out"
`enabled`	boolean

Response

Field	Type	Notes
`id`required	string
`object`required	"llm_route"
`phone_number_id`required	string \| null
`provider`required	"anthropic" \| "openai"
`model`required	string
`environment`required	"sandbox" \| "production"
`system_prompt`required	string
`current_prompt_version`required	integer	range -∞..9007199254740991
`max_tokens`required	integer	range -∞..9007199254740991
`temperature`required	string
`daily_cost_cap_brl`required	string \| null
`handoff_phrases`required	string[]
`blocked_topics`required	object[]
`blocked_topic_fallback_response`required	string
`max_context_messages`required	integer	range -∞..9007199254740991
`max_context_age_seconds`required	integer \| null
`memory_persistence`required	"disabled" \| "opt_in" \| "opt_out"
`enabled`required	boolean
`api_key_suffix`required	string
`created_at`required	string<ISO-8601>	pattern: ^(?:(?:\d\d[2468][048]\|\d\d[13579][26]\|\d\d0[48]\|[02468][048]00\|[13579][26]00)-02-29\|\d{4}-(?:(?:0[13578]\|1[02])-(?:0[1-9]\|[12]\d\|3[01])\|(?:0[469]\|11)-(?:0[1-9]\|[12]\d\|30)\|(?:02)-(?:0[1-9]\|1\d\|2[0-8])))T(?:(?:[01]\d\|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z\|([+-](?:[01]\d\|2[0-3]):[0-5]\d)))$
`updated_at`required	string<ISO-8601>	pattern: ^(?:(?:\d\d[2468][048]\|\d\d[13579][26]\|\d\d0[48]\|[02468][048]00\|[13579][26]00)-02-29\|\d{4}-(?:(?:0[13578]\|1[02])-(?:0[1-9]\|[12]\d\|3[01])\|(?:0[469]\|11)-(?:0[1-9]\|[12]\d\|30)\|(?:02)-(?:0[1-9]\|1\d\|2[0-8])))T(?:(?:[01]\d\|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z\|([+-](?:[01]\d\|2[0-3]):[0-5]\d)))$

Prompt-version history

GET/v1/llm-routes/prompt-versions

Returns the immutable system-prompt revision history for the selected route without exposing the provider API key.

Query

Field	Type	Notes
`limit`required	integer	Maximum number of items to return. Defaults to 20; maximum 100. range 1..100
`starting_after`	string	Opaque cursor from the previous response next_cursor.
`phone_number_id`	string	len 1..∞

Response

Field	Type	Notes
`object`required	"list"
`data`required	object[]
`has_more`required	boolean
`next_cursor`required	string \| null

Delete route

DELETE/v1/llm-routes

Request a completion

POST/v1/llm/completions

Request body

Field	Type	Notes
`messages`required	object[]
`contact_phone`	string	pattern: ^\+\d{8,15}$
`phone_number_id`	string	len 1..∞
`trace_id`	string

Response

Field	Type	Notes
`object`required	"llm_completion"
`content`required	string
`model`required	string
`tokens_in`required	integer	range 0..9007199254740991
`tokens_out`required	integer	range 0..9007199254740991
`cost_brl`required	string
`provider_cost_usd_estimate`required	string \| null
`handoff`required	boolean
`trace_id`required	string

Completion audit log

GET/v1/llm/responses

Lists persisted completion evidence with the exact prompt version, token counts, cost, and trace identifier used for each call.

Query

Field	Type	Notes
`limit`required	integer	Maximum number of items to return. Defaults to 20; maximum 100. range 1..100
`starting_after`	string	Opaque cursor from the previous response next_cursor.

Response

Field	Type	Notes
`object`required	"list"
`data`required	object[]
`has_more`required	boolean
`next_cursor`required	string \| null

Provider errors

Provider failures are normalized to stable Tyxter error codes. Correct invalid credentials before retrying; transient provider failures can be retried with the same idempotency key.

HTTP	`error.code`	Meaning
400	`llm_provider_auth_failed`	The provider rejected the route's BYOK API key with 401 or 403.
502	`provider_error`	The provider request failed for another reason, such as a network or 5xx error.