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hybrid-cloud-rpc

Guide for creating, updating, and deprecating hybrid cloud RPC services in Sentry. Use when asked to "add RPC method", "create RPC service", "hybrid cloud service", "new RPC model", "deprecate RPC method", "remove RPC endpoint", "cross-silo service", "cell RPC", or "control silo service". Covers service scaffolding, method signatures, RPC models, cell resolvers, testing, and safe deprecation workflows.

73

Quality

92%

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SKILL.md
Quality
Evals
Security

Quality

Content

81%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A strong, highly actionable skill body: crisp workflow with routing, validation checklists, and well-signaled one-level references that all resolve to real files. Main weaknesses are minor code errors in the error-propagation example, undefined variables in a couple of test snippets, and a testing section long enough that it should itself be a reference file.

Suggestions

Fix the invalid Python in the error-propagation example: add the missing colon after `def foobar(...) -> RpcTentativeResult` and use `except Exception as e:` instead of bare `except e:`.

Move the Step 7 testing section (~200 lines) into a references/testing.md file and keep a short summary with the three test categories and key imports in SKILL.md, matching the pattern already used for resolvers and deprecation.

Define or inline the setup for undefined variables in test examples (e.g., `thing.id`, `orm_obj`, `orm_org`) so the snippets are executable as written.

DimensionReasoningScore

Conciseness

The body is dense — routing tables, decision rules, checklists, and code with almost no filler, and its scarce prose covers Sentry-specific architecture Claude would not know (silo split, outboxes, resolver requirements). Not 5: Step 7 spans ~200 lines of test idioms and a few illustrative snippets (e.g., the non-abstract convenience method example) could be tightened or trimmed. Not 3: there is no explanation of concepts Claude already knows.

4 / 5

Actionability

Highly concrete throughout: directory tree, the 12 registered discovery packages, decorator orderings, a verification grep command, a pre-flight checklist, and copyable test patterns. Not 5: the error-propagation example contains invalid Python (`def foobar(...) -> RpcTentativeResult` missing a colon, bare `except e:`), and some test examples reference undefined variables (`thing.id`, `orm_obj`, `orm_org`), so they are not copy-paste clean.

4 / 5

Workflow Clarity

Steps 1–8 are clearly sequenced with an intent-routing table, a decision rule for silo mode, a two-phase protocol for breaking changes, three test categories, and an explicit pre-flight verification checklist (Step 8). The destructive deprecation workflow has validation (disable at runtime → migrate callers → remove), so the destructive-operation cap does not apply. Not 4: validation checkpoints and error-recovery guidance (re-validate, migrate-then-remove) are explicit rather than implied.

5 / 5

Progressive Disclosure

All four referenced files (service-template.md, resolvers.md, rpc-models.md, deprecation.md) exist in references/, are one level deep, and are clearly signaled at point of need. Not 5: the ~200-line Step 7 testing section is bulk detail that itself belongs in a reference file, keeping SKILL.md longer than an overview warrants.

4 / 5

Total

17

/

20

Passed

Description

100%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is exemplary: it names the domain, lists concrete capabilities, provides an explicit 'Use when' clause with nine natural trigger phrases including synonyms, and occupies a clearly distinct niche. It follows third-person convention with no fluff or over-claims.

DimensionReasoningScore

Specificity

"Guide for creating, updating, and deprecating hybrid cloud RPC services in Sentry" plus "Covers service scaffolding, method signatures, RPC models, cell resolvers, testing, and safe deprecation workflows" lists multiple concrete actions with comprehensive coverage in third-person voice. Not 4: no meaningful gaps in action coverage.

5 / 5

Completeness

Explicitly answers both: what ("Guide for creating, updating, and deprecating hybrid cloud RPC services... Covers service scaffolding, method signatures, RPC models, cell resolvers, testing") and when ("Use when asked to..." with concrete trigger phrases). Not 4: the 'when' clause is fully explicit, not merely present.

5 / 5

Trigger Term Quality

Nine natural trigger phrases users would actually say: "add RPC method", "create RPC service", "hybrid cloud service", "new RPC model", "deprecate RPC method", "remove RPC endpoint", "cross-silo service", "cell RPC", "control silo service" — comprehensive synonym coverage. Not 4: no common natural phrasing is missing.

5 / 5

Distinctiveness Conflict Risk

Clear niche (Sentry's hybrid cloud RPC architecture) with distinct, codebase-specific triggers like "cell RPC" and "control silo service" — minimal conflict risk with generic skills. Not 4: triggers could not plausibly fire for an unrelated skill.

5 / 5

Total

20

/

20

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository

getsentry/sentry

Path

.agents/skills/hybrid-cloud-rpc/SKILL.md

Reviewed

Table of Contents

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