the language
skills
Agent Skill (SKILL.md) file paths · agentskills.io shape · explicit static paths only (no globs · no templates) · loaded at compose time and injected into the system context. One of 59 words the served contract declares, projected from workflow.schema.json, the same file your editor validates against.
- 1surfaceagent
- optionaleverywherea choice, never a miss
- arraytypethe declared shape
- schemathe sourcenever prose
the contract
1 declarationDescriptions are the schema's own; the deeper invariants (value languages and regexes) ride the same projection. A miss is a nika check finding before anything runs.
- agent
arrayAgent Skill (SKILL.md) file paths · agentskills.io shape · explicit static paths only (no globs · no templates) · loaded at compose time and injected into the system context.inside agent:
in a real file
a crafted check-green file build: agent: system: "Draft a minimal workflow for the goal, spawn it via nika:compose, call nika:done with its outputs." prompt: "Summarize ./notes.md into three bullet points." skills: - "./skills/summarizer/SKILL.md" tools: - "nika:compose" - "nika:read" - "nika:done" max_turns: 8 max_tokens_total: 40000a verbatim slice, real line numbers from compose.nika.yaml, nika check green; the drift gate re-proves this copy on every test run.
cross-references
the check gates that name it
accepted by
defined by
the block it lives in
agent: inside agent:
The whole grammar in one place: the four verbs · the standard library · the spec. Try it in the playground. Read the reference →