projection

projection is an agent for coding agents from matthiasn/lotti. It costs 26 tokens per session (1,432 once invoked), scanned A, original, GPL-3.0.

A deterministic way to calculate current state from a set of events, such as recorded actions or changes. It checks that the result stays the same even when events arrive in a different order or follow different paths.

In plain words
What is it for?
Use it to build and verify event-sourced state projections, where stored events are turned into the current state of an application.
Why use it?
It helps reveal whether event-based state calculation is consistent and reliable. This removes uncertainty caused by event timing or branching.

Agent

Install

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.

agentmods
npx agentmods add agents/matthiasn/lotti/projection
Clone the repo
git clone --depth 1 https://github.com/matthiasn/lotti

Wrote 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.

agentmods badge for projection

README.md
[![agentmods](https://agentmods.dev/badge/agents/matthiasn/lotti/projection.svg)](https://agentmods.dev/agents/matthiasn/lotti/projection)
Your own site
<a href="https://agentmods.dev/agents/matthiasn/lotti/projection"><img src="https://agentmods.dev/badge/agents/matthiasn/lotti/projection.svg" alt="Measured on agentmods" height="20"></a>
Per session 26 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,432 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00026 $0.01432
Opus 5 $0.00013 $0.00716
Sonnet 5 $0.00005 $0.00286
Haiku 4.5 $0.00003 $0.00143

Measured 3d ago against content hash 842341eb4346, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

projection 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 3d 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.

knowledge/features/agents/projection.md · 125 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

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.

  1. 3d ago First seen · 125 lines · 26 tokens per session scan A 842341eb4346

Subscribe to this mod's changes

projection is an agent published in the GitHub repository matthiasn/lotti (1,165 stars, last pushed 4d ago), licensed GPL-3.0. It adds 26 tokens to every session and 1,432 once invoked, about $0.0001 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.

Related

Other agents, from other repositories

apple-neural-performance-expert

Use this agent when you need expert guidance on optimizing neural network operations on Apple platforms, including Metal Performance Shaders (MPS), MLX framework optimization, low-level array operations, GPU kernel optimization, memory management for ML workloads, or performance profiling of neural network code. This…

FluidInference/FluidAudio · 0 tokens

code-search-ast-grep

Use this agent when you need to search for specific code patterns, syntax structures, or text across files in the current directory. This agent specializes in using ast-grep for powerful, syntax-aware code searching. Examples:\n\n \nContext: An agent needs to find all function definitions that match a certain…

FluidInference/FluidAudio · 0 tokens

e2e-verifier

FlutterアプリのE2E動作検証エージェント。MCP(dart-mcp + Marionette)を使い、シミュレーター上でUI操作・検証を行う。mobile-automationスキルから呼び出される。.

K9i-0/ccpocket · 65 tokens

code-reviewer

Agent "code-reviewer" from K9i-0/ccpocket, covering レビュー観点(すべてチェック), 共通観点, dart/flutter固有, typescript固有(bridge server変更時) and 出力形式.

K9i-0/ccpocket · 49 tokens

issue-tracker

Issues and PRDs for this repo live as markdown files in .scratch/. GitHub Issues on semantic-craft/iOS-vibebuddy is not used for work tracking.

semantic-craft/iOS-vibebuddy · 0 tokens

verifier

Generic verifier — decomposes the user's request into atomic claims, validates each independently, reports. Read-only tool surface; no write or edit. Use this when no domain-specific persona fits yet.

AojdevStudio/hermes-satellite · 41 tokens