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 rules/rahult18/prism-mem/cursorrulesgit clone --depth 1 https://github.com/rahult18/prism-memWhat 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 | $0.00343 | $0.00343 |
| Opus 5 | $0.00171 | $0.00171 |
| Sonnet 5 | $0.00069 | $0.00069 |
| Haiku 4.5 | $0.00034 | $0.00034 |
Grade A, and why
cursorrules 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.
This is a copy
100% identical to smolagents_rules — 40 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
# Cursor Rules for Prism-Mem Project
## Project Purpose
- Build a knowledge graph generation system that extracts and links structured triples from coding sessions
- Store session transcripts and maintain persistent knowledge state across Claude interactions
## Key Technology Stack
- Use Claude/Haiku API via LiteLLM for triple extraction
- Use SQLite with sqlite-vec extension for embeddings storage
- Use transformer models for generating embeddings
- Store sessions in ~/.claude/history.jsonl and ~/.claude/projects/*.jsonl files
## Architecture Rules
- Implement extraction in phases, with Phase 4 following Phase 3 and Phase 7 (constitution generator) at the end
- Use session_reader.py to extract sessionId from transcripts
- Use git_reader.py to implement read_git_diff for source analysis
- Store all knowledge graphs in prism-mem located at Desktop/Projects
## Key Components
- extractor module calls Haiku API and produces Graph.relations
- Use link_triple to call create_edge() when connecting entities
- Apply similarity threshold during entity linking phase
- Phase 7 scores all generated triples
## Authentication & API
- Authenticate Anthropic API with ANTHROPIC_API_KEY environment variable
- Pass prompts to _call_haiku for model inference
## Session Management
- Subagent sessions maintain separate .jsonl files in ~/.claude directory
- Subagents produce tool_result objects for parent agent consumption
- Parse JSON objects with attachment field for file/context references
## Code Conventions
- Never hardcode API keys; use environment variables
- Always validate Graph.relations output from kg-gen phases
- Use role="user" for session differentiation where applicable
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 · 39 lines · 343 tokens per session scan A aafba005a113
cursorrules is a cursor rule published in the GitHub repository rahult18/prism-mem (2 stars, last pushed 3mo ago), licensed MIT. It adds 343 tokens to every session, about $0.0017 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to smolagents_rules, differing in 40 lines, and is treated as a copy.
Other cursor rules, from other repositories
angular-20
This rule provides comprehensive best practices and coding standards for Angular development, focusing on modern TypeScript, standalone components, signals, and performance optimizations.
dev-standard
Apache Superset development standards and guidelines for Cursor IDE.
typescript
Changes to these high-fan-out internals can affect every message, delta, element, or rerun. Keep work in them minimal, and benchmark changes with representative stress-test apps.
coolify-ai-docs
Master reference to all Coolify AI documentation in .ai/ directory.
python_lib
Tips and guidelines specific to the development of the Streamlit Python library, not applicable to scripts and e2e tests.
specs
This directory contains product and tech specs for Streamlit features.