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myco_brief

Produce a markdown rollup of substrate state: hunger summary, immune findings, note counts, primordia, plugin inventory, and suggested next actions for human operator check-ins.

Instructions

Produce a human-facing markdown rollup of substrate state: hunger summary, immune findings, note counts by layer, recent primordia, local-plugin inventory, and a "suggested next" action list. Per L0 principle 1 ("Only For Agent"), this is the single carved exception where Myco authors human-facing prose — every other verb's output is primary material for the agent alone.

Use this when: a human operator wants to glance at substrate state (weekly / release-time check-in). For agent-to-agent reporting prefer hunger (structured) or the substrate_pulse sidecar (automatic on every verb). Do NOT use brief as an input to other verbs — it's a terminal rollup, not a structured protocol surface.

Side effects: none. Pure read. Output goes to stdout as markdown; agent / human reads, nothing is written.

Returns: { exit_code, markdown: '...' }. The markdown string is the full rollup; callers print it or surface it in UI as-is. No other fields beyond exit_code + markdown.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
project_dirNoAbsolute path of the workspace / project whose Myco substrate this call targets. Overrides auto-discovery. When omitted, Myco resolves via MCP roots/list, then MYCO_PROJECT_DIR, then cwd — the substrate_pulse field in every response echoes which source answered.
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Despite no annotations, the description fully discloses that the tool is a pure read with no side effects, outputs to stdout as markdown, and does not write anything. This gives the agent complete behavioral understanding.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is somewhat verbose but well-structured: core purpose first, then usage guidelines, side effects, and return format. Every sentence adds value, but could be slightly more concise without losing clarity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description covers all needed context for a simple one-parameter tool: purpose, usage, behavior, and return format. No output schema exists, but the return structure is clearly explained. The tool is complete and self-contained.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Input schema coverage is 100%, baseline 3. The description adds value by explaining the resolution order for project_dir when omitted (roots/list, env var, cwd) and how the chosen source is echoed. This provides extra context beyond the schema description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description explicitly states the tool produces a human-facing markdown rollup of substrate state, listing specific components. It clarifies that this is the only exception to the 'Only For Agent' principle, distinguishing it from other tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides clear usage guidance: use when a human wants to glance at substrate state during weekly/release check-ins, and directs towards alternatives like 'hunger' or 'substrate_pulse' for agent-to-agent reporting. Explicitly warns not to use brief as input to other verbs.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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