tune

name	tune
description	Display and adjust feed relevance thresholds for alerts and digests
allowed-tools	["mcp__*__distillery_status","mcp__*__distillery_configure"]
effort	low
model	haiku

Tune -- Feed Relevance Threshold Management

Displays and adjusts the alert threshold (high-priority items) and digest threshold (regular digest inclusion) used when scoring incoming feed items.

When to Use

• See current thresholds (/tune)
• Adjust alert or digest thresholds (/tune --alert 0.90 --digest 0.50)
• Triggered by "show thresholds", "adjust my feed sensitivity", "tune my feed"

Process

Step 1: Check MCP

See CONVENTIONS.md -- skip if already confirmed this conversation.

Step 2: Parse Arguments

Flag	Description
--alert N	Set alert threshold (float in [0.0, 1.0])
--digest N	Set digest threshold (float in [0.0, 1.0])
--max N	Set max items per poll cycle (positive integer)
--reset	Reset to defaults (alert: 0.85, digest: 0.60)

No flags = read-only mode (display current thresholds).

Validation rules:

• Both --alert and --digest must be floats in [0.0, 1.0]
• --alert must be greater than or equal to --digest
• --max must be a positive integer
• --reset takes precedence over --alert/--digest if all provided
• If validation fails, display error and stop

Step 3: Retrieve Current Configuration

Read current thresholds by omitting the value parameter:

• distillery_configure(section="feeds.thresholds", key="alert")
• distillery_configure(section="feeds.thresholds", key="digest")

Extract the value field from each response.

• In read-only mode (no --alert, --digest, --max, or --reset flag provided), if either call returns an error, show defaults (alert=0.85, digest=0.60) and note that live values could not be confirmed.
• If the user requested changes and either read returns an error, display the MCP error and STOP. Do not apply writes against assumed defaults — Step 4's alert >= digest check depends on the true current values.

Step 4: Apply Changes (if flags provided)

If --reset, target defaults (alert: 0.85, digest: 0.60; max unchanged).

Preview changes and ask for confirmation:

Proposed threshold changes:
  Alert:  <current> -> <new>
  Digest: <current> -> <new>
  Max items per poll: <current> -> <new>   (if --max provided)

Apply these changes? (yes/no)

If declined, display "No changes made." and stop.

Apply each change via distillery_configure:

• For alert: distillery_configure(section="feeds.thresholds", key="alert", value="<new_value>")
• For digest: distillery_configure(section="feeds.thresholds", key="digest", value="<new_value>")

Important: When both thresholds change, determine the correct order to satisfy the alert >= digest constraint:

• If both new values are higher than current: set alert first (raises the ceiling before the floor)
• If both new values are lower than current: set digest first (lowers the floor before the ceiling)
• If only one changes: apply that change directly

If the user passes --max, inform them that max_items_per_poll is not yet configurable at runtime and skip that change.

If distillery_configure returns an error, display the error message and stop. Do not proceed with remaining changes if an earlier one fails.

Step 5: Display Results

Read-only mode:

Feed Relevance Thresholds

| Threshold | Value | Meaning |
|-----------|-------|---------|
| Alert     | 0.85  | Items at or above this score trigger an immediate alert |
| Digest    | 0.60  | Items at or above this score (but below alert) are included in the digest |

Items below the digest threshold (< 0.60) are discarded.
To adjust: /tune --alert <value> --digest <value>

After changes or reset: Same table with Previous/New columns sourced from distillery_configure response (previous_value and new_value fields). Include a confirmation line:

Changes applied at runtime and persisted to distillery.yaml.

If disk_written is false in the response, instead show: "Changes applied in memory only — no config file found to persist to disk."

Tuning guide (always include):

Tuning Guide:
- Raise alert threshold to reduce noise (fewer high-priority alerts)
- Lower digest threshold to capture more items in the digest
- Alert must always be higher than digest
- Defaults: alert=0.85, digest=0.60

Rules

• Always call distillery_configure(section="feeds.thresholds", key="alert") and distillery_configure(section="feeds.thresholds", key="digest") first to verify MCP availability and retrieve current thresholds
• In read-only mode, display thresholds without confirmation
• Validate --alert >= --digest before applying; reject invalid combinations
• Always ask for confirmation before applying changes
• Use distillery_configure to apply changes at runtime — no manual YAML editing required
• When both alert and digest change, order calls to avoid constraint violations (alert first when raising, digest first when lowering)
• On MCP errors, see CONVENTIONS.md error handling -- display and stop
• Always include the tuning guide after displaying thresholds