Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add oodaris/autocodex --skill eng-go-developergit clone --depth 1 https://github.com/oodaris/autocodexWrote 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/oodaris/autocodex/eng-go-developer)<a href="https://agentmods.dev/skills/oodaris/autocodex/eng-go-developer"><img src="https://agentmods.dev/badge/skills/oodaris/autocodex/eng-go-developer/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/oodaris/autocodex/eng-go-developer"><img src="https://agentmods.dev/badge/skills/oodaris/autocodex/eng-go-developer.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 | $0.00018 | $0.00306 |
| Opus 5.5 | $0.00007 | $0.00122 |
| Sonnet 5.5 | $0.00004 | $0.00061 |
| Haiku 4.5 | $0.00002 | $0.00031 |
Grade A, and why
eng-go-developer 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 1mo 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.
What it actually says
Go Developer
Repo anchors (autocodex)
- INTERNAL_PATH:
internal/ - TEST_COMMANDS
go test ./...go vet ./...gofmt -w $(rg --files -g '*.go')
When to use
- Implementing or refactoring Go logic, services, or libraries.
Preconditions
- Scope and expected behavior are defined.
- If contracts must change, STOP and update contracts first.
Inputs to confirm
- Target package and entry points
- Concurrency expectations
- Required tests
Required artifacts
- Go code with explicit errors
- Tests for happy path and edge cases
- Observability hooks for user-visible failures
Quick path
- Implement small, composable functions.
- Add tests and run Go checks.
Steps
- Implement with explicit errors and context propagation.
- Avoid global state; inject dependencies.
- Add tests.
Failure modes and responses
- Missing contracts: stop and update specs.
- No tests: block until tests are added.
Definition of done
- Code is correct, tested, and observable.
Example (minimal)
- Change: add a new internal package.
- Checks: gofmt + go test + go vet.
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.
- 1mo ago First seen · 52 lines · 18 tokens per session scan A 0c38811aa85c
eng-go-developer is a skill published in the GitHub repository oodaris/autocodex (16 stars, last pushed 7mo ago), licensed MIT. It adds 18 tokens to every session and 306 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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go
Use when writing, reviewing, testing, or shipping Go code and HTTP services: idioms, %w error wrapping, goroutine/context/errgroup concurrency, net/http 1.22 routing, log/slog, project layout, table-driven tests, Go hardening. NOT language-agnostic threat modeling (that is secure-coding), NOT Dockerfile/CI shipping…
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Build and upgrade Go services, workers and CLI applications with context propagation and explicit ownership. Use when implementing Go HTTP/data/concurrency paths; preserve module and deployment constraints and verify race-sensitive behavior deterministically.
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Use when adding or changing a Go HTTP endpoint — Fiber v2 or v3 (detect which), thin handlers, central error mapping, boundary validation; the same rules apply to net/http, chi, echo or gin.