Borrowing it
Nothing to install: this file belongs to adadiamonds/agent-tools. 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/adadiamonds/agent-tools/main/.cursorrulesgit clone --depth 1 https://github.com/adadiamonds/agent-toolsWrote 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/rules/adadiamonds/agent-tools/cursorrules)<a href="https://agentmods.dev/rules/adadiamonds/agent-tools/cursorrules"><img src="https://agentmods.dev/badge/rules/adadiamonds/agent-tools/cursorrules/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/rules/adadiamonds/agent-tools/cursorrules"><img src="https://agentmods.dev/badge/rules/adadiamonds/agent-tools/cursorrules.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 | $0.00446 | $0.00446 |
| Opus 5.5 | $0.00178 | $0.00178 |
| Sonnet 5.5 | $0.00089 | $0.00089 |
| Haiku 4.5 | $0.00045 | $0.00045 |
Grade B, and why
cursorrules scanned grade B with 1 finding 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 2mo 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.
Reads MCP configurationmediumAgent snooping
mcp.json carries server URLs and auth tokens; reading it lets a mod discover and abuse other integrations.
- mcp.json servers need a type and an absolute https url; no secrets in headers. What it actually says
Cursor rules for adadiamonds/agent-tools
This repository is the official public Ada Diamonds plugin for AI agents: an Agent Plugins 1.0.0 manifest (plugin.json), the MCP server list (mcp.json: https://www.adadiamonds.com/mcp and https://www.adadiamonds.com/mcp/docs), and four Agent Skills under skills/ (ada-diamonds-shopping, ada-diamonds-api, ada-diamonds-mcp, ada-diamonds-commerce). There is no application code.
Source of truth for every fact: https://www.adadiamonds.com/developers (markdown via Accept: text/markdown), https://www.adadiamonds.com/openapi.json, https://www.adadiamonds.com/agents.md. If a skill disagrees with the live docs, fix the skill.
When asked about Ada Diamonds' API, MCP servers, or checkout, read the relevant skills//SKILL.md first and answer from it, not from memory.
Editing rules:
- Never invent endpoints, parameters, scopes, or prices.
- Prices are US dollars as decimals, never cents.
- An engagement ring is a setting plus a loose diamond, priced separately; ring examples show both numbers and the sum.
- SKILL.md frontmatter: name equals the directory name; description non-empty, max 1024 chars, says what the skill does and when to use it; keep license: MIT and metadata.homepage; single-line values only.
- Keep SKILL.md under 500 lines; long tables go in references/ inside the skill and are linked relatively.
- plugin.json may only contain: $schema, name, version, description, author, homepage, repository, license, keywords, extensions. Never declare skills or MCP servers inline in plugin.json.
- mcp.json servers need a type and an absolute https url; no secrets in headers.
- No em dashes in prose; use commas, periods, or parentheses.
- Bump plugin.json version and add a CHANGELOG.md line for user-visible changes.
Validate before committing: node scripts/validate.mjs (exit 0 = valid). CI runs the same script.
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.
- 2mo ago First seen · 21 lines · 446 tokens per session scan B 31ce90fbf402
cursorrules is a cursor rule published in the GitHub repository adadiamonds/agent-tools (2 stars, last pushed 2mo ago), licensed MIT. It adds 446 tokens to every session, about $0.0018 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads mcp configuration). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
cursorrules compared with cursor rules from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| cursorrulesadadiamonds/agent-tools | Cursor rule | 2 | 2mo ago | MIT | B | 446 | Cursor |
| extension-developmentbiswajitpanday/Optivise | Cursor rule | 0 | 1y ago | none | A | 0 | Cursor |
| project-structurebiswajitpanday/Optivise | Cursor rule | 0 | 1y ago | none | A | 561 | Cursor |
| ponytailDietrichGebert/ponytail | Cursor rule | 185k | 8d ago | MIT | A | 604 | Cursor |
| angular-20angular/angular | Cursor rule | 101k | yesterday | MIT | A | 0 | Cursor |
| dev-standardapache/superset | Cursor rule | 75k | yesterday | Apache-2.0 | A | 1,147 | Cursor |
| prefer-assertions-over-defensive-checksprisma/orm | Cursor rule | 48k | yesterday | Apache-2.0 | A | 0 | Cursor |