Borrowing it
Nothing to install: this file belongs to wordbricks/onequery. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/wordbricks/onequery/main/.agents/skills/protobuf/SKILL.mdgit clone --depth 1 https://github.com/wordbricks/onequeryWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/wordbricks/onequery/protobuf)<a href="https://agentmods.dev/skills/wordbricks/onequery/protobuf"><img src="https://agentmods.dev/badge/skills/wordbricks/onequery/protobuf/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/wordbricks/onequery/protobuf"><img src="https://agentmods.dev/badge/skills/wordbricks/onequery/protobuf.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00054 | $0.01166 |
| Opus 5.5 | $0.00022 | $0.00466 |
| Sonnet 5.5 | $0.00011 | $0.00233 |
| Haiku 4.5 | $0.00005 | $0.00117 |
Grade A, and why
protobuf scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
100% identical to protobuf — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Protocol Buffers
When You Need This Skill
- Creating or editing
.protofiles - Setting up
buf.yamlorbuf.gen.yaml - Designing gRPC or Connect services
- Adding protovalidate constraints
- Troubleshooting buf lint or breaking change errors
Core Workflow
1. Match Project Style
Before writing proto code, review existing .proto files in the project.
Match conventions for naming, field ordering, structural patterns, validation, and documentation style.
If none exists, ask the user what style should be used or an existing library to emulate.
2. Write Proto Code
- Apply universal best practices from best_practices.md
- Add protovalidate constraints to every field—this is not optional for production APIs
- For service templates, see assets/
3. Verify Changes
Always run after making changes:
buf format -w && buf lint
Check for a Makefile first—many projects use make lint or make format.
Fix all errors before considering the change complete.
Quick Reference
| Task | Reference |
|---|---|
| Field types, enums, oneofs, maps | quick_reference.md |
| Schema evolution, breaking changes | best_practices.md |
| Validation constraints | protovalidate.md |
| Complete service examples | examples.md, assets/ |
| buf CLI, buf.yaml, buf.gen.yaml | buf_toolchain.md |
| Migrating from protoc | migration.md |
| Lint errors, common issues | troubleshooting.md |
| Proto API review checklist | review_checklist.md |
Project Setup
New Project
- Create directory structure:
proto/ ├── buf.yaml ├── buf.gen.yaml └── company/ └── domain/ └── v1/ └── service.proto
What ships with it
20 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- assets/buf.gen.go-connect.yaml 596 B
- assets/buf.gen.go.yaml 532 B
- assets/buf.gen.java.yaml 416 B
- assets/buf.gen.python.yaml 312 B
- assets/buf.gen.ts.yaml 304 B
- assets/buf.gen.yaml 841 B
- assets/buf.lock 283 B
- assets/buf.yaml 239 B
- assets/Makefile.example 217 B
- assets/proto/example/v1/book_service.proto 4.9 KB
- assets/proto/example/v1/book.proto 1.8 KB
- references/best_practices.md 15 KB
- references/buf_toolchain.md 9.1 KB
- references/examples.md 1.2 KB
- references/migration.md 5.1 KB
- references/protoc_toolchain.md 5.0 KB
- references/protovalidate.md 14 KB
- references/quick_reference.md 5.1 KB
- references/review_checklist.md 6.5 KB
- references/troubleshooting.md 9.0 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 142 lines · 54 tokens per session scan A 8b09f409f34a
protobuf is a skill published in the GitHub repository wordbricks/onequery (17 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 54 tokens to every session and 1,166 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to protobuf, differing in 0 lines, and is treated as a copy.
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