Borrowing it
Nothing to install: this file belongs to BlackbirdWorks/gopherstack. 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/BlackbirdWorks/gopherstack/main/.claude/skills/gopherstack-sdk-shape/SKILL.mdgit clone --depth 1 https://github.com/BlackbirdWorks/gopherstackWrote 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/blackbirdworks/gopherstack/gopherstack-sdk-shape)<a href="https://agentmods.dev/skills/blackbirdworks/gopherstack/gopherstack-sdk-shape"><img src="https://agentmods.dev/badge/skills/blackbirdworks/gopherstack/gopherstack-sdk-shape/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/blackbirdworks/gopherstack/gopherstack-sdk-shape"><img src="https://agentmods.dev/badge/skills/blackbirdworks/gopherstack/gopherstack-sdk-shape.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 | $0.00120 | $0.01417 |
| Opus 5.5 | $0.00048 | $0.00567 |
| Sonnet 5.5 | $0.00024 | $0.00283 |
| Haiku 4.5 | $0.00012 | $0.00142 |
Grade A, and why
gopherstack-sdk-shape 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
gopherstack-sdk-shape
Never infer a wire shape from a sibling operation or from field names — read each
operation's own serializer/deserializer. Same-looking ops can differ: directconnect's
AllocatePrivateVirtualInterface flattens VirtualInterface fields onto Output while
AllocateTransitVirtualInterface nests it as VirtualInterface *types.VirtualInterface.
For "which ops exist / are missing" use scripts/dev/svcops.sh <service> (see gopherstack-map).
Fast path: use the script
.claude/skills/gopherstack-sdk-shape/scripts/sdkshape.sh <service> # protocol + op list
.claude/skills/gopherstack-sdk-shape/scripts/sdkshape.sh <service> <Operation> # file + function locations
No-op-name mode resolves the pinned version from go.mod, prints the SDK dir,
detects the protocol from the serializer prefix, and lists api_op_*.go files
(count + first 20). With an operation, it prints the api_op_<Op>.go path plus
the serializer/deserializer/error-deserializer function names with line numbers.
That covers steps 1–3 below. Read the printed files yourself for the actual field list — the script locates, it doesn't summarize.
The manual recipe (what the script automates)
ls $(go env GOMODCACHE)/github.com/aws/aws-sdk-go-v2/service/<svc>@<ver>/api_op_<Op>.go— get<ver>fromgo.mod(grep "aws-sdk-go-v2/service/<svc> " go.mod); multiple versions coexist in the cache, always use the one pinned in this repo's go.mod. Input/Output structs live here with// This member is requiredmarkers.grep -n "^func " serializers.go | grep -i <Op>— protocol prefix + which binding functions exist for this op.grep -n "func aws.*_deserializeOpError<Op>" deserializers.goand read that op's own switch statement — the authoritative per-op exception set.- REST protocols only:
grep -n "SplitURI\|request.Method" serializers.goto extract the real HTTP verb + path-parameter pattern for the op.
Protocol-prefix decoder
What ships with it
1 file 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.
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.
- yesterday First seen · 95 lines · 120 tokens per session scan A 7368b90e0c37
gopherstack-sdk-shape is a skill published in the GitHub repository BlackbirdWorks/gopherstack (17 stars, last pushed yesterday), licensed MIT. It adds 120 tokens to every session and 1,417 once invoked, about $0.0005 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 2026-11-07.
gopherstack-sdk-shape compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| gopherstack-sdk-shapeBlackbirdWorks/gopherstack | Skill | 17 | yesterday | MIT | A | 120 | Claude Code |
| amplify-workflowawslabs/agent-plugins | Skill | 937 | 2d ago | Apache-2.0 | A | 214 | Claude Code |
| aws-lambda-durable-functionsawslabs/agent-plugins | Skill | 937 | 2d ago | Apache-2.0 | A | 109 | Claude Code |
| snsitsmostafa/aws-agent-skills | Skill | 1.2k | 5d ago | MIT | A | 32 | Claude Code |
| aws-lambdaawslabs/agent-plugins | Skill | 937 | 2d ago | Apache-2.0 | A | 74 | Claude Code |
| huawei-cloud-apig-instance-managementhuaweicloud/huaweicloud-devkit | Skill | 70 | yesterday | Apache-2.0 | A | 206 | Claude Code |
| cloud-native-aws-serverlessj4flmao/agent-skills | Skill | 39 | 4d ago | MIT | A | 133 | Claude Code, Codex |