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BF backend-engineering

Design and implement backend services and APIs — REST, gRPC, GraphQL, event-driven handlers, transaction boundaries, outbox/inbox delivery, migration coexistence, database access, integration, error handling, and service-level testing. Use for application/domain/infrastructure implementation decisions. Language and framework agnostic. Do not use for frontend, data engineering, platform provisioning, API contract ownership, service decomposition strategy, or cross-system migration planning.

magnus919/agent-skills Agent Skills author: magnus919 MIT 15 files · 2 scripts body ≈ 2 379 tokens Open the sourcegithub.com↗ analyzed 27 h ago

Design and implement backend services and APIs — REST, gRPC, GraphQL, event-driven handlers, transaction boundaries, outbox/inbox delivery, migration…

As a process F 58/100 · Will not run — References files that are not bundled: ../programming-principles/SKILL.md, ../api-design-and-evolution/SKILL.md, ../migration-engineering/SKILL.md

IntegrationSupabasePostgreSQLSoftware developmenttype and topics are labelled automatically from the skill text
Runs in: Claude / Claude Code ChatGPT / Codex Gemini CLI Cursor GitHub Copilot / VS Code Qwen Code Kimi Code CLI Z.ai (GLM) DeepSeek (Deep Code) Mistral Vibe LangChain (deepagents) OpenClaw Goose OpenCode
JSON
Technical rating
B
91/100
safety, quality, tests
Safety 60%
100
Quality 40%
77
Run on models
none yet
Process rating
F
58/100
Will not run
References files that are not bundled: ../programming-principles/SKILL.md, ../api-design-and-evolution/SKILL.md, ../migration-engineering/SKILL.md
Tools and files w 18
0
Inputs and preconditions w 11
0
Progress reporting w 2
0
the three weakest of ten parameters · all ten

How to improve

  1. The text references files that are not there: add them or drop the references.
For the model run — optional
  • A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.

Guard findings · 0

✓ No critical or high findings

Files scanned: 14. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning missing-ref reference to a missing file: ../programming-principles/SKILL.md
  • warning missing-ref reference to a missing file: ../api-design-and-evolution/SKILL.md
  • warning missing-ref reference to a missing file: ../migration-engineering/SKILL.md
  • warning missing-ref reference to a missing file: ../software-architecture/SKILL.md
  • warning missing-ref reference to a missing file: ../data-engineering/SKILL.md
  • warning missing-ref reference to a missing file: ../secure-software-engineering/SKILL.md
  • warning missing-ref reference to a missing file: ../release-engineering/SKILL.md
  • warning missing-ref reference to a missing file: ../postgres/SKILL.md
  • warning missing-ref reference to a missing file: ../supabase/SKILL.md
  • warning missing-ref reference to a missing file: ../supabase/references/agent-evals.md

Process rating: all ten parameters 58/100

Will not run. References files that are not bundled: ../programming-principles/SKILL.md, ../api-design-and-evolution/SKILL.md, ../migration-engineering/SKILL.md
  • 0Tools and files. 10 referenced file(s) missing: ../programming-principles/SKILL.md, ../api-design-and-evolution/SKILL.md, ../migration-engineering/SKILL.md
  • 0Inputs and preconditions. Does not say what the process needs to start
  • 0Progress reporting. Says nothing while it works
  • 50When it triggers. No condition that starts the skill
  • 50Failures and branches. 0 branches, has a failure section
  • 100Steps. 15 steps
  • 100Result and completion. Output format and completion criterion are stated
  • 100Consistency. Name and required fields are in place
  • 100Execution cost. Instruction body is 2379 tokens
  • 100Running it twice. Mutating operations check current state

Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.

Quality signals

  • +5Description has no quoted example phrases that should trigger the skill
  • +4No input/output examples
  • -31 of 2 scripts are never mentioned in SKILL.md
  • +2Single-language instructions
  • +4Description says when NOT to use the skill
  • +3Description length 494: enough signal without eating the budget
  • +4Structure: 9 headings
  • +3Step-by-step instructions: 15 items
  • +3Output format is stated explicitly
  • +4Reference files are cited in the instructions (8 of 8)
  • +1License stated

Quality base 70; lint remarks subtract, signals add up to 100. Result: 77.