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 agentmods add skills/imoonkey/openweb/instacartnpx skills add imoonkey/openweb --skill instacartgit clone --depth 1 https://github.com/imoonkey/openwebWhat 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 | $0.00000 | $0.00379 |
| Opus 5 | $0.00000 | $0.00189 |
| Sonnet 5 | $0.00000 | $0.00076 |
| Haiku 4.5 | $0.00000 | $0.00038 |
Grade A, and why
instacart 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 2d 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
Instacart
Overview
Grocery delivery marketplace. Archetype: Food Delivery.
Workflows
Search groceries
searchProducts(query)→ products with name, price, brand, availability
Browse a store's catalog
getStoreProducts(retailerSlug, slug)→ products in a departmentretailerSlugis a known store slug (e.g. "costco", "sprouts", "publix")slugis a category (e.g. "produce", "dairy", "snacks")
Check delivery availability
getNearbyStores(postalCode)→ stores withretailerId, delivery ETAs
Operations
| Operation | Intent | Key Input | Key Output | Notes |
|---|---|---|---|---|
| searchProducts | search groceries by keyword | query | products (name, price, brand, availability) | entry point; returns autocomplete suggestions too |
| getStoreProducts | browse a store department | retailerSlug (known slug), slug (category) | products (name, price, brand), collection info | auto-resolves shopId; entry point |
| getNearbyStores | find stores with delivery ETAs | postalCode | stores (retailerId, etaMinutes, etaDisplay) | entry point; results depend on IP geolocation |
Quick Start
# Search for groceries
openweb instacart exec searchProducts '{"query": "bananas", "limit": 5}'
# Browse Costco produce
openweb instacart exec getStoreProducts '{"retailerSlug": "costco", "slug": "produce", "first": 10}'
# Find nearby stores
openweb instacart exec getNearbyStores '{"postalCode": "90210"}'
What ships with it
9 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.
- 2d ago First seen · 39 lines · 0 tokens per session scan A d9110053ef3c
instacart is a skill published in the GitHub repository imoonkey/openweb (58 stars, last pushed 2mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 379 tokens. 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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