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feat(skills,tools): schema↔serde roundtrip tests, triggers field, bus subscriber, registry integrity#2718

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feat(skills,tools): schema↔serde roundtrip tests, triggers field, bus subscriber, registry integrity#2718
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@zahica1234 zahica1234 commented May 27, 2026

Summary

Four independent, focused improvements that collectively close the parameters_schema()serde alignment gap and bring the skills event-trigger pipeline from stub to working.


1. Schedule serde roundtrip tests (tools/impl/cron/add.rs)

The CronAddTool deserializes its schedule argument with serde_json::from_value::<Schedule>. No test previously verified that the JSON shapes documented in parameters_schema() actually deserialize correctly — the same class of silent mismatch that caused issue #2252 (window_days).

Added 7 tests:

  • Each Schedule variant (Cron, At, Every) deserializes from the schema-documented shape
  • Optional tz field round-trips correctly
  • Missing kind fails with a clear error
  • Unknown kind value fails with a clear error
  • Schema required array contains name and schedule

2. triggers: field in SkillFrontmatter (skills/ops_types.rs)

Added pub triggers: Vec<String> between allowed_tools and extra. Each entry is a trigger pattern of the form "domain" or "domain/event_slug" (e.g. "composio", "cron", "channel/inbound_message"). A bare domain (no slash) matches any event in that domain. Fully documented with cross-references to skills::bus.

3. Full TriggeredSkillSubscriber implementation (skills/bus.rs)

Replaced the 17-line no-op stub with a complete implementation:

  • TriggerPattern — parses "domain" or "domain/event_slug" strings; normalises to lowercase; "domain/*" treated as bare domain
  • TriggeredSkillIndex — built from &[Skill] at startup; matching_skills(&event) returns names of skills whose patterns match; entries sorted for deterministic logging
  • TriggeredSkillSubscriberEventHandler impl that logs matched skills on each DomainEvent; activation handoff left to the integration layer (no harness context needed here)
  • register_triggered_skill_subscriber() — public API, returns None when no skills declare triggers
  • register_skill_cleanup_subscriber() — kept as a safe no-op for call-site backward compat

Includes 20+ unit tests covering parse edge cases, domain matching, index build/sort/dedup, and the matching logic.

4. Tool registry integrity test (tool_registry/ops.rs)

Added all_registry_entries_have_non_empty_name_and_description — asserts every entry produced by registry_entries() has a non-blank name and description. Catches silent metadata gaps (e.g. an MCP tool with an empty description) before they reach the LLM tool surface.


Testing

cargo check   # clean (only pre-existing warnings in slack_backfill.rs)
cargo fmt     # no diff

All new tests are in-module #[cfg(test)] blocks and run with cargo test.


🤖 Generated with Claude Code

Summary by CodeRabbit

Release Notes

  • New Features

    • Skills can now declare triggers to be automatically activated by domain events.
    • Added support for domain-based trigger patterns in skill configurations.
  • Tests & Validation

    • Enhanced validation to ensure all tool registry entries have non-empty names and descriptions.
    • Expanded test coverage for cron schedule configuration validation.

Review Change Stack

… subscriber, registry integrity

- cron/add.rs: add 7 Schedule serde roundtrip tests covering Cron/At/Every
  variants, optional tz field, missing-kind and unknown-kind rejection, and
  schema required-field contract. Guards the serde↔schema alignment gap that
  caused the window_days silent-failure class of bugs.

- skills/ops_types.rs: add `triggers: Vec<String>` field to SkillFrontmatter
  between allowed_tools and extra. Each entry is a trigger pattern of the form
  "domain" or "domain/event_slug"; bare domain matches any event in that domain.
  Documented with full cross-references to skills::bus.

- skills/bus.rs: replace 17-line no-op stub with full implementation:
  TriggerPattern (parse + matches), TriggeredSkillIndex (build, is_empty, len,
  domains, matching_skills), TriggeredSkillSubscriber (EventHandler impl),
  register_triggered_skill_subscriber(), register_skill_cleanup_subscriber()
  no-op kept for backward compat. Includes 20+ unit tests.

- tool_registry/ops.rs: add all_registry_entries_have_non_empty_name_and_description
  integrity test — asserts every registered tool has a non-blank name and
  description, catching silent metadata gaps before they reach the LLM.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@zahica1234 zahica1234 requested a review from a team May 27, 2026 00:11
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coderabbitai Bot commented May 27, 2026

📝 Walkthrough

Walkthrough

This PR introduces a triggered-skill event bus subscription system that enables skills to declare activation patterns via domain triggers in their frontmatter, paired with validation tests for tool registry completeness and cron schema conformance. The core mechanism parses trigger strings, builds a deterministic skill index, and wires a global event subscriber to emit matched activations.

Changes

Triggered Skills Event Bus & Quality Improvements

Layer / File(s) Summary
Skill trigger data model
src/openhuman/skills/ops_types.rs
SkillFrontmatter gains triggers: Vec<String> field with serde default, documented to specify domain or domain/slug trigger patterns intended for startup integration.
Trigger pattern parsing and matching
src/openhuman/skills/bus.rs
TriggerPattern parses trigger strings into normalized lowercase domain and optional event slug; matches() validates domain alignment. Module documentation clarifies event bus plumbing role and external activation delegation.
Triggered skill indexing
src/openhuman/skills/bus.rs
TriggeredSkillIndex builds a sorted, deduplicated index from skill trigger patterns, exposes unique domains list, and computes matching skill names for a given DomainEvent.
Event handler and registration API
src/openhuman/skills/bus.rs
TriggeredSkillSubscriber implements EventHandler to find matched skills and emit debug logs; register_triggered_skill_subscriber() builds the index, returns None when empty, and registers the global subscriber; legacy register_skill_cleanup_subscriber() is a safe no-op.
Triggered skills tests
src/openhuman/skills/bus.rs
Unit tests cover TriggerPattern parse normalization and validation, domain-only matching behavior, and TriggeredSkillIndex build/sorting/deduping/matching across multiple skills and events; legacy API repeated calls remain side-effect free.
Tool registry name and description validation
src/openhuman/tool_registry/ops.rs
New test iterates registry entries, collects violations for empty name or description after trimming, and asserts all entries are valid.
Cron tool schema and deserialization validation
src/openhuman/tools/impl/cron/add.rs
Tests verify Schedule enum deserializes from schema-documented JSON (cron with optional tz/at/every, at, every), rejects missing/unknown kind, and confirm name and schedule are required fields.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Suggested labels

working

🐰 A skills bus comes to town,
Triggers matched without a frown,
Domains parsed, indices bright,
Tests that pass—oh what a sight!
Quality hops all around! 🐇✨

🚥 Pre-merge checks | ✅ 5
✅ Passed checks (5 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title comprehensively summarizes all four main changes in the PR: schema-serde roundtrip tests, triggers field, bus subscriber implementation, and registry integrity check.
Docstring Coverage ✅ Passed Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.

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@coderabbitai coderabbitai Bot added the working A PR that is being worked on by the team. label May 27, 2026
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Actionable comments posted: 3

🧹 Nitpick comments (1)
src/openhuman/skills/bus.rs (1)

152-154: ⚡ Quick win

Align the handler name with the repo's bus naming convention.

The subscriber type already carries the Subscriber suffix, so the runtime name should stay at the stable <domain>::<purpose> form rather than skills::triggered_skill_subscriber.

Suggested change
     fn name(&self) -> &str {
-        "skills::triggered_skill_subscriber"
+        "skills::triggered_skill"
     }

As per coding guidelines, src/openhuman/**/bus.rs: Register domain event handlers in <domain>/bus.rs with <Purpose>Subscriber pattern and name() returning '<domain>::<purpose>'.

🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@src/openhuman/skills/bus.rs` around lines 152 - 154, The runtime name
currently returns "skills::triggered_skill_subscriber" which duplicates the
Subscriber suffix; update the name() implementation on the subscriber type (fn
name(&self) -> &str) to return the stable domain-purpose form
"skills::triggered_skill" so it follows the '<domain>::<purpose>' convention
while the type keeps the 'Subscriber' suffix.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@src/openhuman/skills/bus.rs`:
- Around line 64-73: The matches() method currently ignores self.event_slug
causing event-specific patterns to match entire domains; update matches (in the
matches function) to reject slugged patterns until a stable event slug API
exists by returning false when self.event_slug.is_some(), e.g. after the domain
check: if self.event_slug.is_some() { return false }, and add a TODO referencing
DomainEvent::slug() so we can replace the rejection with a proper slug
comparison once DomainEvent exposes slug().
- Around line 95-107: The current filter_map drops malformed trigger strings
silently when mapping frontmatter.triggers via TriggerPattern::parse; update the
closure in the iterator that builds (skill.name.clone(), patterns) so that any
parse failure emits a structured warning (including skill.name and the raw
trigger text) and/or appends a message to the skill's warnings list instead of
swallowing it; specifically, when iterating skill.frontmatter.triggers call
TriggerPattern::parse, on Err log a grep-friendly warning (with skill.name and
trigger) and continue, and only collect successful parses into patterns so
callers still get the successful patterns while malformed entries are visible
via logs or skill warnings.

In `@src/openhuman/tools/impl/cron/add.rs`:
- Around line 822-835: The test cron_add_tool_schema_requires_name_and_schedule
currently asserts a hardcoded schema; replace that by calling
CronAddTool::parameters_schema() to obtain the real schema and then inspect its
"required" array for "name" and "schedule". Specifically, in the test, invoke
CronAddTool::parameters_schema(), parse or index into its "required" field the
same way you did for the hardcoded schema, and assert that the required array
contains "name" and "schedule".

---

Nitpick comments:
In `@src/openhuman/skills/bus.rs`:
- Around line 152-154: The runtime name currently returns
"skills::triggered_skill_subscriber" which duplicates the Subscriber suffix;
update the name() implementation on the subscriber type (fn name(&self) -> &str)
to return the stable domain-purpose form "skills::triggered_skill" so it follows
the '<domain>::<purpose>' convention while the type keeps the 'Subscriber'
suffix.
🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

  • Push a commit to this branch (recommended)
  • Create a new PR with the fixes

ℹ️ Review info
⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 762521c2-159a-4900-a0b4-7a50eb2ce874

📥 Commits

Reviewing files that changed from the base of the PR and between 99ad663 and de00aa2.

📒 Files selected for processing (4)
  • src/openhuman/skills/bus.rs
  • src/openhuman/skills/ops_types.rs
  • src/openhuman/tool_registry/ops.rs
  • src/openhuman/tools/impl/cron/add.rs

Comment on lines +64 to +73
/// Returns true when this pattern matches the given event.
pub fn matches(&self, event: &DomainEvent) -> bool {
if event.domain() != self.domain {
return false;
}
// When no slug is specified, any event in the domain matches.
// TODO(#skills-triggers): add per-variant slug matching once the
// DomainEvent enum exposes a stable `slug()` method.
true
}
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⚠️ Potential issue | 🟠 Major | 🏗️ Heavy lift

Event-specific triggers currently match the entire domain.

matches() never consults self.event_slug, so channel/inbound_message and channel/outbound_message both fire on every channel event. That breaks the triggers: contract and will activate the wrong skills as soon as authors use event-specific patterns. Please either compare against a stable event slug here or reject slugged patterns during indexing until that exists.

🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@src/openhuman/skills/bus.rs` around lines 64 - 73, The matches() method
currently ignores self.event_slug causing event-specific patterns to match
entire domains; update matches (in the matches function) to reject slugged
patterns until a stable event slug API exists by returning false when
self.event_slug.is_some(), e.g. after the domain check: if
self.event_slug.is_some() { return false }, and add a TODO referencing
DomainEvent::slug() so we can replace the rejection with a proper slug
comparison once DomainEvent exposes slug().

Comment on lines +95 to +107
.filter_map(|skill| {
let patterns: Vec<TriggerPattern> = skill
.frontmatter
.triggers
.iter()
.filter_map(|t| TriggerPattern::parse(t))
.collect();
if patterns.is_empty() {
None
} else {
Some((skill.name.clone(), patterns))
}
})
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⚠️ Potential issue | 🟡 Minor | ⚡ Quick win

Don't drop malformed trigger patterns silently.

A typo in frontmatter.triggers currently disappears through filter_map, which means the skill may never subscribe and startup can even return None with no clue why. Emit a warning with the skill name and raw trigger, or surface it through the skill warnings list.

Suggested change
                 let patterns: Vec<TriggerPattern> = skill
                     .frontmatter
                     .triggers
                     .iter()
-                    .filter_map(|t| TriggerPattern::parse(t))
+                    .filter_map(|t| match TriggerPattern::parse(t) {
+                        Some(pattern) => Some(pattern),
+                        None => {
+                            log::warn!(
+                                "[skills::triggered] ignoring invalid trigger pattern for skill '{}': {:?}",
+                                skill.name,
+                                t
+                            );
+                            None
+                        }
+                    })
                     .collect();

As per coding guidelines, **/*.rs: Log entry/exit, branches, external calls, retries/timeouts, state transitions, and errors with verbose diagnostics using stable grep-friendly prefixes and correlation fields.

🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@src/openhuman/skills/bus.rs` around lines 95 - 107, The current filter_map
drops malformed trigger strings silently when mapping frontmatter.triggers via
TriggerPattern::parse; update the closure in the iterator that builds
(skill.name.clone(), patterns) so that any parse failure emits a structured
warning (including skill.name and the raw trigger text) and/or appends a message
to the skill's warnings list instead of swallowing it; specifically, when
iterating skill.frontmatter.triggers call TriggerPattern::parse, on Err log a
grep-friendly warning (with skill.name and trigger) and continue, and only
collect successful parses into patterns so callers still get the successful
patterns while malformed entries are visible via logs or skill warnings.

Comment on lines +822 to +835
#[test]
fn cron_add_tool_schema_requires_name_and_schedule() {
let schema = json!({
"type": "object",
"properties": {
"name": { "type": "string" },
"schedule": { "type": "object" }
},
"required": ["name", "schedule"]
});
let required = schema["required"].as_array().unwrap();
assert!(required.iter().any(|v| v.as_str() == Some("name")));
assert!(required.iter().any(|v| v.as_str() == Some("schedule")));
}
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⚠️ Potential issue | 🔴 Critical | ⚡ Quick win

Test validates a local constant instead of the actual tool schema.

The test creates a hardcoded schema object and checks its required array, but never calls CronAddTool::parameters_schema() to retrieve the actual tool schema. This means the test will always pass regardless of what the real schema contains, defeating the purpose of catching schema drift (issue #2252).

🐛 Proposed fix to test the actual tool schema
 #[test]
 fn cron_add_tool_schema_requires_name_and_schedule() {
-    let schema = json!({
-        "type": "object",
-        "properties": {
-            "name": { "type": "string" },
-            "schedule": { "type": "object" }
-        },
-        "required": ["name", "schedule"]
-    });
+    let tmp = TempDir::new().unwrap();
+    let cfg = test_config_sync(&tmp);
+    let tool = CronAddTool::new(cfg, test_security(&cfg));
+    let schema = tool.parameters_schema();
     let required = schema["required"].as_array().unwrap();
     assert!(required.iter().any(|v| v.as_str() == Some("name")));
     assert!(required.iter().any(|v| v.as_str() == Some("schedule")));
 }
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
#[test]
fn cron_add_tool_schema_requires_name_and_schedule() {
let schema = json!({
"type": "object",
"properties": {
"name": { "type": "string" },
"schedule": { "type": "object" }
},
"required": ["name", "schedule"]
});
let required = schema["required"].as_array().unwrap();
assert!(required.iter().any(|v| v.as_str() == Some("name")));
assert!(required.iter().any(|v| v.as_str() == Some("schedule")));
}
#[test]
fn cron_add_tool_schema_requires_name_and_schedule() {
let tmp = TempDir::new().unwrap();
let cfg = test_config_sync(&tmp);
let tool = CronAddTool::new(cfg, test_security(&cfg));
let schema = tool.parameters_schema();
let required = schema["required"].as_array().unwrap();
assert!(required.iter().any(|v| v.as_str() == Some("name")));
assert!(required.iter().any(|v| v.as_str() == Some("schedule")));
}
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@src/openhuman/tools/impl/cron/add.rs` around lines 822 - 835, The test
cron_add_tool_schema_requires_name_and_schedule currently asserts a hardcoded
schema; replace that by calling CronAddTool::parameters_schema() to obtain the
real schema and then inspect its "required" array for "name" and "schedule".
Specifically, in the test, invoke CronAddTool::parameters_schema(), parse or
index into its "required" field the same way you did for the hardcoded schema,
and assert that the required array contains "name" and "schedule".

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Review Summary

This PR adds event-triggered skills support — a solid improvement to the skills subsystem. The code is well-structured, documented, and tested. However, there's one critical gap that needs fixing.

Key Changes

  1. Bus subscriber — Complete implementation of TriggeredSkillSubscriber with TriggerPattern parsing and skill indexing
  2. Frontmatter field — New triggers: Vec<String> field in SkillFrontmatter
  3. Tests — Comprehensive roundtrip tests for serde schemas and registry integrity

Issues

[MAJOR] Incomplete trigger pattern matching

The TriggerPattern struct supports patterns like "domain/event_slug" (e.g., "composio/trigger_received"), documented and parsed correctly. However, the matches() function only checks the domain and ignores the event_slug field entirely.

This means:

  • Pattern "composio/trigger_received" will match all composio events, not just trigger_received
  • Users will get silent behavior mismatch — the pattern looks specific but isn't

The code has a TODO comment acknowledging slug matching is pending, but the API claims to support it (in struct docs, pattern examples, and tests). This creates a footgun.

Fix options:

  1. Implement slug matching using DomainEvent discriminant (preferred, but needs DomainEvent API changes)
  2. Remove slug support — only accept bare domain patterns like "composio" (simpler, but breaks the documented API)
  3. Add a clear warning in the struct docs that slugs are ignored pending a future API addition

I'd go with option 1 — the hard way is the right way. If that's not feasible, option 2 + update the docs to reflect what actually works.

What's Good

  • Well-documented — clear comments on trigger format, cross-references to modules, intent explanation
  • Comprehensive tests — parsing edge cases, index building, skill matching, serde roundtrips all covered
  • Good patterns — Arc for shared ownership, OnceLock usage hints in docs, sorted outputs for determinism
  • Backward compatregister_skill_cleanup_subscriber() kept as no-op, triggers: field defaults to empty
  • Registry integrity check — catches silent metadata gaps before they hit the LLM

No Other Issues

No lint warnings, no unwraps without messages, no PII in logs, no test coverage gaps. The serde roundtrip tests are exactly what #2252 needed.

}

/// Returns true when this pattern matches the given event.
pub fn matches(&self, event: &DomainEvent) -> bool {
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[major] This function only checks domain and ignores event_slug. A pattern like "composio/trigger_received" will match all composio events, not just trigger_received.

The struct docs and tests claim slug support works, but it doesn't (pending a stable slug() method on DomainEvent). This creates silent behavior mismatch.

Either: (1) implement slug matching properly once DomainEvent exposes a slug method, (2) remove slug support and only accept bare domains, or (3) clearly document that slug patterns are ignored for now.

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