schema

Language reference / schema

Meaning and placement

infer

JSON Schema · the structured-output contract the model’s reply must satisfy, inline or the schema of a project file. The out-of-core hatch; the typed door is task-level returns: (both on one task is NIKA-TYPE-003).

Property	Declaration
Requirement	Optional in this object
Schema location	`/$defs/infer/properties/schema`
$ref	`"#/$defs/schemaContract"`

In the same object: max_tokens · model · prompt · system · temperature · thinking · vision Schema source (use the pointer above)

agent

JSON Schema · the contract the agent’s FINAL message must satisfy, inline or the schema of a project file. The out-of-core hatch; the typed door is task-level returns: (both on one task is NIKA-TYPE-003).

Property	Declaration
Requirement	Optional in this object
Schema location	`/$defs/agent/properties/schema`
$ref	`"#/$defs/schemaContract"`

In the same object: images · max_tokens_total · max_turns · model · prompt · skills · system · temperature · tools Schema source (use the pointer above)

In a source template

Excerpt from templates/agent-loop.nika, source lines 58–67. This is a fragment, not a runnable workflow.

illustration

      # the token limit"). Measured — 400 starves qwen3.5:4b on this prompt.
      # a reasoning model needs 16384 here, or a documented run.reasoning.effort: low
      max_tokens: 2000
      schema:
        type: object
        additionalProperties: false
        required: [steps]
        properties:
          steps: { type: array, items: { type: string } }

Templates containing this field

Template	Source
`templates/agent-loop.nika`	Line 61
`templates/aggregate-by-key.nika`	Line 32
`templates/bounded-batch.nika`	Line 30
`templates/classify-and-route.nika`	Line 85
`templates/corpus-qa.nika`	Line 104
`templates/deduplicate-records.nika`	Line 32
`templates/document-to-fields.nika`	Line 66
`templates/evaluate-and-optimize.nika`	Line 43
`templates/media-asset-pack.nika`	Line 61
`templates/parallel-review.nika`	Line 58
`templates/project-public-fields.nika`	Line 33
`templates/recover-optional-file.nika`	Line 47
`templates/snapshot-diff.nika`	Line 33
`templates/validate-records.nika`	Line 30
`templates/website-brief.nika`	Line 73

These are literal key occurrences in the source files, not an execution or conformance claim. How to instantiate a template.

Contract and implementation

This page projects the named specification revision. Check released engine status and the validation workflow before running a file. An optional field is not evidence that every engine supports every value. Canonical identity: language:word:schema. Spec revision: 5c40ba456c53. How documentation stays connected.

YAML

Language fields

CLI & errors

Data catalogs

Workspace

Documentation system

Tool contracts

Meaning and placement

infer

agent

In a source template

Templates containing this field

Contract and implementation

​Meaning and placement

​infer

​agent

​In a source template

​Templates containing this field

​Contract and implementation

Meaning and placement

infer

agent

In a source template

Templates containing this field

Contract and implementation