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 gear-foundation/vara-skills --skill sails-ethexe-architecturegit clone --depth 1 https://github.com/gear-foundation/vara-skillsWrote 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/gear-foundation/vara-skills/sails-ethexe-architecture)<a href="https://agentmods.dev/skills/gear-foundation/vara-skills/sails-ethexe-architecture"><img src="https://agentmods.dev/badge/skills/gear-foundation/vara-skills/sails-ethexe-architecture/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/gear-foundation/vara-skills/sails-ethexe-architecture"><img src="https://agentmods.dev/badge/skills/gear-foundation/vara-skills/sails-ethexe-architecture.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 | $0.00059 | $0.01128 |
| Opus 5 | $0.00030 | $0.00564 |
| Sonnet 5 | $0.00012 | $0.00226 |
| Haiku 4.5 | $0.00006 | $0.00113 |
Grade A, and why
sails-ethexe-architecture 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 12d 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.
How it starts
The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Sails Ethexe Architecture
Goal
Turn an approved spec into an ethexe-specific architecture artifact before implementation, covering transport strategy, payable design, event model, Solidity interface generation, and the constraints the ethexe feature imposes.
If the app does NOT need ethexe, use ../sails-architecture/SKILL.md instead.
Inputs
../../references/sails-ethexe-patterns.md— ethexe diff table, transport rules, type requirements, gated syscalls../../references/sails-header-wire-format.md— interface ID stability, entry ID derivation../../references/sails-idl-v2-syntax.md— IDL v2 annotations../../assets/architecture-template.md../../references/vara-domain-overview.md../../references/sails-program-and-service-architecture.md../../references/gear-messaging-and-replies.md
Write the result to docs/plans/YYYY-MM-DD-<topic>-architecture.md.
Architecture Decisions Specific to Ethexe
Transport Strategy
The architecture must name the transport per service and per method:
| Pattern | When to use |
|---|---|
Dual transport (default #[export]) |
Methods callable from both Gear programs and EVM |
Scale-only (#[export(scale)]) |
Internal program-to-program calls, no EVM exposure needed |
Ethabi-only (#[export(ethabi)]) |
Methods only meaningful from EVM side |
Payable (#[export(ethabi, payable)]) |
Methods that accept value — requires ethabi |
Document the transport choice per method in the architecture artifact. Dual transport is the default but not always desirable — scale-only methods reduce the ABI surface.
Payable Design
- Which methods accept value? Name each one.
- What happens to received value? (stored in program, forwarded, refunded on error?)
- Non-payable methods panic if value > 0 — is this acceptable for all non-payable paths?
- Constructors can also be payable — document if the program requires initial funding.
Event Model
Decide between:
emit_event()— standard Gear event (visible to Gear tooling, explorers)emit_eth_event()— Ethereum-style event (visible to EVM tooling, indexed topics)- Both — if the same event must be visible to both ecosystems (requires two separate emissions)
What ships with it
3 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.
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.
- 12d ago First seen · 104 lines · 59 tokens per session scan A c4763412e82b
sails-ethexe-architecture is a skill published in the GitHub repository gear-foundation/vara-skills (17 stars, last pushed 2mo ago), licensed MIT. It adds 59 tokens to every session and 1,128 once invoked, about $0.0003 per session on Opus 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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