fix(skills): replace get_tool() calls with get() in SkillRegistry validation methods #3283

freemo · 2026-04-05T09:07:02Z

freemo commented

2026-04-05 09:07:02 +00:00

Summary

Fixes AttributeError raised at runtime when calling SkillRegistry.validate_plan() or SkillRegistry.validate_skill(). Both methods called self._tool_registry.get_tool(...) which does not exist on ToolRegistry — the correct method is get().

Problem

ToolRegistry exposes only get(name: str), not get_tool(name: str). Two methods in SkillRegistry used the wrong method name:

validate_plan() called self._tool_registry.get_tool(entry.name) → AttributeError
validate_skill() called self._tool_registry.get_tool(ref) → AttributeError

The refresh() method in the same class already used the correct self._tool_registry.get(entry.name), creating an internal inconsistency.

Changes

Source Fix

src/cleveragents/skills/registry.py: Replace both get_tool() calls with get() in validate_plan() and validate_skill()

Test Updates

features/skills_registry_coverage_boost.feature:
- Update get_tool should not have been called assertion to get should not have been called
- Add 4 new BDD scenarios covering validate_skill(): missing tool ref, existing tool ref, unregistered include, and no-tool-registry path
features/steps/skills_registry_coverage_boost_steps.py:
- Update mock setup to use mock.get instead of mock.get_tool
- Add step definitions for new validate_skill() scenarios

Quality Gates

✅ nox -e lint — all checks passed
✅ nox -e typecheck — 0 errors, 0 warnings
✅ nox -e unit_tests — 14 scenarios passed (skills_registry_coverage_boost.feature)
✅ No remaining get_tool references in SkillRegistry

Closes

Closes #2914

Automated by CleverAgents Bot
Supervisor: Implementation | Agent: ca-issue-worker

## Summary Fixes `AttributeError` raised at runtime when calling `SkillRegistry.validate_plan()` or `SkillRegistry.validate_skill()`. Both methods called `self._tool_registry.get_tool(...)` which does not exist on `ToolRegistry` — the correct method is `get()`. ## Problem `ToolRegistry` exposes only `get(name: str)`, not `get_tool(name: str)`. Two methods in `SkillRegistry` used the wrong method name: - `validate_plan()` called `self._tool_registry.get_tool(entry.name)` → `AttributeError` - `validate_skill()` called `self._tool_registry.get_tool(ref)` → `AttributeError` The `refresh()` method in the same class already used the correct `self._tool_registry.get(entry.name)`, creating an internal inconsistency. ## Changes ### Source Fix - `src/cleveragents/skills/registry.py`: Replace both `get_tool()` calls with `get()` in `validate_plan()` and `validate_skill()` ### Test Updates - `features/skills_registry_coverage_boost.feature`: - Update `get_tool should not have been called` assertion to `get should not have been called` - Add 4 new BDD scenarios covering `validate_skill()`: missing tool ref, existing tool ref, unregistered include, and no-tool-registry path - `features/steps/skills_registry_coverage_boost_steps.py`: - Update mock setup to use `mock.get` instead of `mock.get_tool` - Add step definitions for new `validate_skill()` scenarios ## Quality Gates - ✅ `nox -e lint` — all checks passed - ✅ `nox -e typecheck` — 0 errors, 0 warnings - ✅ `nox -e unit_tests` — 14 scenarios passed (skills_registry_coverage_boost.feature) - ✅ No remaining `get_tool` references in `SkillRegistry` ## Closes Closes #2914 --- **Automated by CleverAgents Bot** Supervisor: Implementation | Agent: ca-issue-worker

freemo added 1 commit

2026-04-05 09:07:03 +00:00

fix(skills): replace get_tool() calls with get() in SkillRegistry validation methods

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9f62f9c9c8

SkillRegistry.validate_plan() and validate_skill() called the non-existent
ToolRegistry.get_tool() method, causing AttributeError at runtime. The correct
method is ToolRegistry.get(), which is already used by SkillRegistry.refresh().

Changes:
- Replace self._tool_registry.get_tool(entry.name) with self._tool_registry.get(entry.name)
  in validate_plan()
- Replace self._tool_registry.get_tool(ref) with self._tool_registry.get(ref)
  in validate_skill()
- Update Behave BDD tests to use mock.get instead of mock.get_tool
- Add new BDD scenarios covering validate_skill() happy path, not-found path,
  unregistered include path, and no-tool-registry path
- Remove stale get_tool mock setup from test helpers

ISSUES CLOSED: #2914

freemo commented

2026-04-05 09:09:34 +00:00

🔒 Review claimed by reviewer-pool-1 [claim-token: reviewer-pool-1-3283-1775374200]

Automated by CleverAgents Bot
Supervisor: PR Review | Agent: ca-continuous-pr-reviewer

🔒 Review claimed by reviewer-pool-1 [claim-token: reviewer-pool-1-3283-1775374200] --- **Automated by CleverAgents Bot** Supervisor: PR Review | Agent: ca-continuous-pr-reviewer

freemo referenced this pull request

2026-04-05 09:13:17 +00:00

UAT: SkillRegistry.validate_plan() and validate_skill() call non-existent get_tool() on ToolRegistry — will raise AttributeError at runtime #2914

freemo referenced this pull request

2026-04-05 10:00:39 +00:00

[CA-AUTO] UAT Pool Supervisor — v3.2.0–v3.7.0 — Session Tracker #3124

freemo reviewed

2026-04-05 10:06:29 +00:00

freemo left a comment

Self-Review — APPROVED ✅

Summary

This PR correctly fixes a runtime AttributeError in SkillRegistry.validate_plan() and SkillRegistry.validate_skill() where both methods called self._tool_registry.get_tool(...) — a method that does not exist on ToolRegistry. The correct method is get(), which is already used by refresh() in the same class.

Review Findings

Specification Alignment ✅

The fix aligns with the specification's requirement that MCP tools registered in the Tool Registry can be composed into Skills. The ToolRegistry public API exposes get(name: str) -> ToolSpec | None (confirmed at line 59 of tool/registry.py), and both validation methods now correctly use this API.

Correctness ✅

Source fix is minimal and correct: Only the two broken call sites are changed (get_tool() → get()), matching the existing refresh() pattern in the same class.
No remaining get_tool() references on ToolRegistry: Verified via codebase grep. The get_tool() calls in cli/commands/tool.py and validation.py operate on a different service object, not ToolRegistry.
No other ToolRegistry API misuse found in the skills module.

Test Quality ✅

4 new BDD scenarios for validate_skill() cover meaningful paths:
- Missing tool ref → error message (error path)
- Existing tool ref → no errors (happy path)
- Unregistered included skill → error message (edge case)
- No tool registry configured → no errors (null-guard path)
Existing test assertions updated to match the corrected method name (get instead of get_tool).
Mock setup cleaned up: Removed unnecessary mock.get_tool configuration, keeping only mock.get.

API Consistency ✅

The fix makes validate_plan() and validate_skill() consistent with refresh(), which already used get() correctly. Internal consistency within SkillRegistry is now restored.

Code Quality ✅

Changes are focused and easy to review.
No unnecessary complexity introduced.
Step definitions follow established patterns in the file.

Security ✅

No secrets, credentials, or injection concerns.

Minor Note

There is a triple blank line (3 instead of 2) between step_validate_skill_with_ref and step_validate_skill_unregistered_include in the steps file (around line 298). This may trigger an E303 lint violation. If CI catches this, it can be auto-fixed.

Verdict

The fix is correct, well-tested, and properly scoped. Approved for merge.

Automated by CleverAgents Bot
Supervisor: PR Review | Agent: ca-pr-self-reviewer

## Self-Review — APPROVED ✅ ### Summary This PR correctly fixes a runtime `AttributeError` in `SkillRegistry.validate_plan()` and `SkillRegistry.validate_skill()` where both methods called `self._tool_registry.get_tool(...)` — a method that does not exist on `ToolRegistry`. The correct method is `get()`, which is already used by `refresh()` in the same class. ### Review Findings #### Specification Alignment ✅ - The fix aligns with the specification's requirement that MCP tools registered in the Tool Registry can be composed into Skills. The `ToolRegistry` public API exposes `get(name: str) -> ToolSpec | None` (confirmed at line 59 of `tool/registry.py`), and both validation methods now correctly use this API. #### Correctness ✅ - **Source fix is minimal and correct**: Only the two broken call sites are changed (`get_tool()` → `get()`), matching the existing `refresh()` pattern in the same class. - **No remaining `get_tool()` references on `ToolRegistry`**: Verified via codebase grep. The `get_tool()` calls in `cli/commands/tool.py` and `validation.py` operate on a different service object, not `ToolRegistry`. - **No other `ToolRegistry` API misuse** found in the skills module. #### Test Quality ✅ - **4 new BDD scenarios** for `validate_skill()` cover meaningful paths: - Missing tool ref → error message (error path) - Existing tool ref → no errors (happy path) - Unregistered included skill → error message (edge case) - No tool registry configured → no errors (null-guard path) - **Existing test assertions updated** to match the corrected method name (`get` instead of `get_tool`). - **Mock setup cleaned up**: Removed unnecessary `mock.get_tool` configuration, keeping only `mock.get`. #### API Consistency ✅ - The fix makes `validate_plan()` and `validate_skill()` consistent with `refresh()`, which already used `get()` correctly. Internal consistency within `SkillRegistry` is now restored. #### Code Quality ✅ - Changes are focused and easy to review. - No unnecessary complexity introduced. - Step definitions follow established patterns in the file. #### Security ✅ - No secrets, credentials, or injection concerns. ### Minor Note There is a triple blank line (3 instead of 2) between `step_validate_skill_with_ref` and `step_validate_skill_unregistered_include` in the steps file (around line 298). This may trigger an E303 lint violation. If CI catches this, it can be auto-fixed. ### Verdict The fix is correct, well-tested, and properly scoped. Approved for merge. --- **Automated by CleverAgents Bot** Supervisor: PR Review | Agent: ca-pr-self-reviewer

features/steps/skills_registry_coverage_boost_steps.py

					
				@ -288,0 +297,4 @@

				@when('I validate a skill definition that includes unregistered skill "{include_name}"')

				def step_validate_skill_unregistered_include(

				    context: Context, include_name: str

				) -> None:

Minor: There are 3 blank lines here instead of the expected 2 (E303). This may trigger a lint failure. If so, simply remove one blank line.

Automated by CleverAgents Bot
Supervisor: PR Review | Agent: ca-pr-self-reviewer

Minor: There are 3 blank lines here instead of the expected 2 (E303). This may trigger a lint failure. If so, simply remove one blank line. --- **Automated by CleverAgents Bot** Supervisor: PR Review | Agent: ca-pr-self-reviewer

freemo reviewed

2026-04-05 10:08:13 +00:00

freemo left a comment

Self-Review — APPROVED ✅

This PR correctly fixes a runtime AttributeError in SkillRegistry.validate_plan() and SkillRegistry.validate_skill() where both methods called self._tool_registry.get_tool(...) — a method that does not exist on ToolRegistry. The correct method is get().

Correctness ✅ — Source fix is minimal and correct. No remaining get_tool() references on ToolRegistry in the codebase.

Test Quality ✅ — 4 new BDD scenarios for validate_skill() cover error path, happy path, unregistered include, and null-guard path.

API Consistency ✅ — validate_plan() and validate_skill() now match refresh() which already used get().

Minor: Triple blank line in steps file (~line 298) may trigger E303 lint violation.

Approved for merge.

Automated by CleverAgents Bot
Supervisor: PR Review | Agent: ca-pr-self-reviewer

## Self-Review — APPROVED ✅ This PR correctly fixes a runtime `AttributeError` in `SkillRegistry.validate_plan()` and `SkillRegistry.validate_skill()` where both methods called `self._tool_registry.get_tool(...)` — a method that does not exist on `ToolRegistry`. The correct method is `get()`. **Correctness** ✅ — Source fix is minimal and correct. No remaining `get_tool()` references on `ToolRegistry` in the codebase. **Test Quality** ✅ — 4 new BDD scenarios for `validate_skill()` cover error path, happy path, unregistered include, and null-guard path. **API Consistency** ✅ — `validate_plan()` and `validate_skill()` now match `refresh()` which already used `get()`. **Minor**: Triple blank line in steps file (~line 298) may trigger E303 lint violation. Approved for merge. --- **Automated by CleverAgents Bot** Supervisor: PR Review | Agent: ca-pr-self-reviewer

freemo added this to the v3.8.0 milestone

2026-04-05 10:10:48 +00:00

freemo referenced this pull request

2026-04-05 10:11:10 +00:00

[CA-AUTO] Backlog Groomer — groomer-1 — Session Tracker #2771

freemo scheduled this pull request to auto merge when all checks succeed

2026-04-05 10:21:16 +00:00

freemo referenced this pull request

2026-04-05 10:23:56 +00:00

UAT: SkillRegistry.validate_plan() and validate_skill() call non-existent get_tool() on ToolRegistry — will raise AttributeError at runtime #2914

freemo added a new dependency

2026-04-05 17:53:45 +00:00

#2914 UAT: SkillRegistry.validate_plan() and validate_skill() call non-existent get_tool() on ToolRegistry — will raise AttributeError at runtime

freemo referenced this pull request

2026-04-05 17:54:20 +00:00

[Automated] CleverAgents Build Session - 2026-04-05 #3377

freemo reviewed

2026-04-05 19:45:44 +00:00

freemo left a comment

Review Summary (Self-Review — APPROVE recommendation)

⚠️ Note: This review is posted as COMMENT because Forgejo does not allow self-approval. The reviewer recommends APPROVED status — a non-author reviewer should apply the formal approval.

Reviewed PR #3283 with focus on error-handling-patterns, edge-cases, and boundary-conditions.

This PR fixes a straightforward but critical runtime bug: SkillRegistry.validate_plan() and SkillRegistry.validate_skill() called self._tool_registry.get_tool(...) which does not exist on ToolRegistry — the correct method is get(). The fix is minimal, correct, and well-tested.

Files Reviewed

File	Change
`src/cleveragents/skills/registry.py`	Replace `get_tool()` → `get()` in `validate_plan()` and `validate_skill()`
`features/skills_registry_coverage_boost.feature`	Update assertion text; add 4 new `validate_skill()` scenarios
`features/steps/skills_registry_coverage_boost_steps.py`	Update mock setup to `mock.get`; add step defs for new scenarios

Verification Against ToolRegistry API

Confirmed that src/cleveragents/tool/registry.py exposes get(self, name: str) -> ToolSpec | None and has no get_tool() method. The fix correctly aligns SkillRegistry with the ToolRegistry public API, consistent with how refresh() in the same class already used get().

✅ Specification Compliance

The fix restores the MCP tool composability validation path required by the specification
Module boundaries respected — SkillRegistry correctly delegates to ToolRegistry via its public API
Internal consistency restored: all three methods (validate_plan, validate_skill, refresh) now use get()

✅ Error Handling Patterns (Deep Dive)

Given special attention to error handling as a focus area:

validate_plan(): Properly guards self._tool_registry is not None before calling .get(). Handles None return by appending to errors list. ValueError from resolve_tools() is caught and reported gracefully. No exceptions are swallowed.
validate_skill(): Same guard pattern for None registry. Iterates all tool_refs and reports each missing tool individually. Correctly validates inline tool descriptions and include references independently.
refresh() (unchanged, verified for consistency): Catches (ValueError, RuntimeError) from resolver and returns a SkillRefreshResult with failure info rather than propagating — appropriate for a batch-refresh operation.
All validation methods follow the soft-validation pattern (return error lists) rather than raising, which is the correct design for validation APIs.

✅ Edge Cases and Boundary Conditions (Deep Dive)

Examined the following edge cases:

Empty tool_refs / anonymous_tools / includes: All loops simply don't execute — no index errors or unexpected behavior
No tool registry configured (None): validate_skill() skips tool-ref validation but still validates inline tools and includes. Tested by new scenario "validate_skill passes with no tool registry configured"
validate_plan() with missing/empty skills key: plan.get("skills", []) safely returns empty list
Consistency between validate_plan() and validate_skill(): These operate at different abstraction levels — validate_plan() works with resolved entries (checking is_inline and prefixes), while validate_skill() works with raw definition fields (tool_refs, anonymous_tools, includes). This is architecturally correct since tool_refs are explicit named references that should always be in the registry.

✅ Test Quality

4 new BDD scenarios cover validate_skill() comprehensively: missing tool ref, existing tool ref, unregistered include, and no-tool-registry path
Existing scenarios updated to use mock.get instead of mock.get_tool, maintaining consistency
Mock setup properly cleaned up — removed stale get_tool references
Step definitions are well-typed with explicit Context annotations and return types

✅ CONTRIBUTING.md Compliance

Commit message: Follows Conventional Changelog format (fix(skills): ...) ✅
Issue footer: ISSUES CLOSED: #2914 ✅
PR metadata: Closes #2914, milestone v3.8.0, Type/Bug label ✅
Single atomic commit: Clean branch with 1 commit ✅
Branch name: Matches issue metadata ✅
No forbidden patterns: No # type: ignore, imports at top of file ✅
Quality gates: PR description confirms lint, typecheck, and unit_tests pass ✅

Minor Suggestions (Non-blocking)

Type safety improvement (future work): _tool_registry is typed as Any | None, which means Pyright cannot catch method-name mismatches like get_tool() vs get() at type-check time. This is the root cause that allowed this bug to exist undetected. Consider introducing a Protocol type (e.g., ToolRegistryProtocol with a get(name: str) -> ToolSpec | None method) or using the concrete ToolRegistry type to get static checking protection against similar regressions. This would be a separate issue/PR.
Coverage report: The PR description mentions lint, typecheck, and unit_tests passing but doesn't explicitly confirm nox -e coverage_report ≥ 97%. The new scenarios should help coverage, but it would be good to confirm.

Recommendation: APPROVE ✅

Automated by CleverAgents Bot
Supervisor: PR Review | Agent: ca-pr-self-reviewer

## Review Summary (Self-Review — APPROVE recommendation) > ⚠️ **Note**: This review is posted as COMMENT because Forgejo does not allow self-approval. The reviewer recommends **APPROVED** status — a non-author reviewer should apply the formal approval. Reviewed PR #3283 with focus on **error-handling-patterns**, **edge-cases**, and **boundary-conditions**. This PR fixes a straightforward but critical runtime bug: `SkillRegistry.validate_plan()` and `SkillRegistry.validate_skill()` called `self._tool_registry.get_tool(...)` which does not exist on `ToolRegistry` — the correct method is `get()`. The fix is minimal, correct, and well-tested. ### Files Reviewed | File | Change | |------|--------| | `src/cleveragents/skills/registry.py` | Replace `get_tool()` → `get()` in `validate_plan()` and `validate_skill()` | | `features/skills_registry_coverage_boost.feature` | Update assertion text; add 4 new `validate_skill()` scenarios | | `features/steps/skills_registry_coverage_boost_steps.py` | Update mock setup to `mock.get`; add step defs for new scenarios | ### Verification Against ToolRegistry API Confirmed that `src/cleveragents/tool/registry.py` exposes `get(self, name: str) -> ToolSpec | None` and has no `get_tool()` method. The fix correctly aligns `SkillRegistry` with the `ToolRegistry` public API, consistent with how `refresh()` in the same class already used `get()`. --- ### ✅ Specification Compliance - The fix restores the MCP tool composability validation path required by the specification - Module boundaries respected — `SkillRegistry` correctly delegates to `ToolRegistry` via its public API - Internal consistency restored: all three methods (`validate_plan`, `validate_skill`, `refresh`) now use `get()` ### ✅ Error Handling Patterns (Deep Dive) Given special attention to error handling as a focus area: - **`validate_plan()`**: Properly guards `self._tool_registry is not None` before calling `.get()`. Handles `None` return by appending to errors list. `ValueError` from `resolve_tools()` is caught and reported gracefully. No exceptions are swallowed. - **`validate_skill()`**: Same guard pattern for `None` registry. Iterates all `tool_refs` and reports each missing tool individually. Correctly validates inline tool descriptions and include references independently. - **`refresh()`** (unchanged, verified for consistency): Catches `(ValueError, RuntimeError)` from resolver and returns a `SkillRefreshResult` with failure info rather than propagating — appropriate for a batch-refresh operation. - All validation methods follow the soft-validation pattern (return error lists) rather than raising, which is the correct design for validation APIs. ### ✅ Edge Cases and Boundary Conditions (Deep Dive) Examined the following edge cases: - **Empty `tool_refs` / `anonymous_tools` / `includes`**: All loops simply don't execute — no index errors or unexpected behavior - **No tool registry configured (`None`)**: `validate_skill()` skips tool-ref validation but still validates inline tools and includes. Tested by new scenario "validate_skill passes with no tool registry configured" - **`validate_plan()` with missing/empty `skills` key**: `plan.get("skills", [])` safely returns empty list - **Consistency between `validate_plan()` and `validate_skill()`**: These operate at different abstraction levels — `validate_plan()` works with resolved entries (checking `is_inline` and prefixes), while `validate_skill()` works with raw definition fields (`tool_refs`, `anonymous_tools`, `includes`). This is architecturally correct since `tool_refs` are explicit named references that should always be in the registry. ### ✅ Test Quality - 4 new BDD scenarios cover `validate_skill()` comprehensively: missing tool ref, existing tool ref, unregistered include, and no-tool-registry path - Existing scenarios updated to use `mock.get` instead of `mock.get_tool`, maintaining consistency - Mock setup properly cleaned up — removed stale `get_tool` references - Step definitions are well-typed with explicit `Context` annotations and return types ### ✅ CONTRIBUTING.md Compliance - **Commit message**: Follows Conventional Changelog format (`fix(skills): ...`) ✅ - **Issue footer**: `ISSUES CLOSED: #2914` ✅ - **PR metadata**: `Closes #2914`, milestone v3.8.0, `Type/Bug` label ✅ - **Single atomic commit**: Clean branch with 1 commit ✅ - **Branch name**: Matches issue metadata ✅ - **No forbidden patterns**: No `# type: ignore`, imports at top of file ✅ - **Quality gates**: PR description confirms lint, typecheck, and unit_tests pass ✅ ### Minor Suggestions (Non-blocking) 1. **Type safety improvement (future work)**: `_tool_registry` is typed as `Any | None`, which means Pyright cannot catch method-name mismatches like `get_tool()` vs `get()` at type-check time. This is the root cause that allowed this bug to exist undetected. Consider introducing a `Protocol` type (e.g., `ToolRegistryProtocol` with a `get(name: str) -> ToolSpec | None` method) or using the concrete `ToolRegistry` type to get static checking protection against similar regressions. This would be a separate issue/PR. 2. **Coverage report**: The PR description mentions lint, typecheck, and unit_tests passing but doesn't explicitly confirm `nox -e coverage_report` ≥ 97%. The new scenarios should help coverage, but it would be good to confirm. **Recommendation: APPROVE** ✅ --- **Automated by CleverAgents Bot** Supervisor: PR Review | Agent: ca-pr-self-reviewer

freemo referenced this pull request

2026-04-05 19:48:58 +00:00

[Automated] CleverAgents Build Session - 2026-04-05 #3377

freemo referenced this pull request

2026-04-05 21:00:52 +00:00

[Automated] CleverAgents Build Session - 2026-04-05 #3377

freemo merged commit 6e168fe300 into master

2026-04-05 21:08:35 +00:00

freemo removed this from the v3.8.0 milestone

2026-04-07 00:10:48 +00:00

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