
Agentic Skills by letta-ai
adding-models
by letta-ai
Guide for adding new LLM models to Letta Code. Use when the user wants to add support for a new model, needs to know valid model handles, or wants ...
creating-skills
by letta-ai
Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Let...
initializing-memory
by letta-ai
Comprehensive guide for initializing or reorganizing agent memory. Load this skill when running /init, when the user asks you to set up your memory...
adaptive-rejection-sampler
by letta-ai
Guidance for implementing Adaptive Rejection Sampling (ARS) algorithms. This skill should be used when implementing rejection sampling methods, log...
bn-fit-modify
by letta-ai
Guide for Bayesian Network tasks involving structure learning, parameter fitting, intervention, and sampling. This skill should be used when workin...
break-filter-js-from-html
by letta-ai
Guidance for bypassing HTML/JavaScript sanitization filters in security testing contexts. This skill should be used when tasked with finding XSS fi...
build-cython-ext
by letta-ai
Guidance for building and installing Cython extension packages, particularly when resolving compatibility issues with modern Python and NumPy versi...
build-pmars
by letta-ai
Guide for building pMARS (Portable Memory Array Redcode Simulator) and similar software from Debian/Ubuntu source packages. Use this skill when tas...
build-pov-ray
by letta-ai
Guidance for compiling POV-Ray 2.2 (a 1990s-era ray tracing software) from source on modern Linux systems. This skill should be used when the task ...
caffe-cifar-10
by letta-ai
Guidance for building Caffe from source and training CIFAR-10 models. This skill applies when tasks involve compiling Caffe deep learning framework...
cancel-async-tasks
by letta-ai
Guidance for implementing asyncio task cancellation with proper cleanup, especially for handling keyboard interrupts (Ctrl+C). This skill should be...
chess-best-move
by letta-ai
Guide for analyzing chess positions from images and determining optimal moves. This skill should be used when asked to find the best move, checkmat...
circuit-fibsqrt
by letta-ai
Guidance for building digital logic circuits that compute composite functions like Fibonacci of integer square root. This skill applies when implem...
cobol-modernization
by letta-ai
Guidance for converting COBOL programs to modern languages (Python, Java, etc.) while preserving exact behavior and data format compatibility. This...
code-from-image
by letta-ai
Guide for extracting code or pseudocode from images using OCR and implementing it correctly. This skill should be used when tasks involve reading c...
compile-compcert
by letta-ai
Guide for building CompCert, the formally verified C compiler, from source. This skill should be used when compiling, building, or installing CompC...
configure-git-webserver
by letta-ai
Guidance for setting up Git repositories with automatic web deployment via post-receive hooks. This skill applies when configuring bare Git reposit...
constraints-scheduling
by letta-ai
Provides systematic approaches for solving constraint-based scheduling problems, such as finding meeting times that satisfy multiple participant av...
count-dataset-tokens
by letta-ai
Guidance for counting tokens in datasets, particularly from HuggingFace or similar sources. This skill should be used when tasks involve counting t...
crack-7z-hash
by letta-ai
This skill provides guidance for cracking 7z archive password hashes. It should be used when tasked with recovering passwords from 7z encrypted arc...
custom-memory-heap-crash
by letta-ai
Debugging crashes related to custom memory heap implementations, particularly release-only crashes involving static destruction order, use-after-fr...
db-wal-recovery
by letta-ai
Guidance for recovering data from SQLite Write-Ahead Log (WAL) files that may be corrupted, encrypted, or inaccessible. This skill should be used w...
distribution-search
by letta-ai
Guidance for finding probability distributions that satisfy specific statistical constraints such as KL divergence targets, entropy requirements, o...
dna-assembly
by letta-ai
Guidance for Golden Gate assembly primer design and DNA assembly tasks. This skill should be used when designing primers for Golden Gate cloning, T...
dna-insert
by letta-ai
Guide for designing DNA insertion primers for site-directed mutagenesis (SDM) using Q5 or similar kits. This skill should be used when tasks involv...
extract-elf
by letta-ai
Guidance for extracting and processing data from ELF (Executable and Linkable Format) binary files. This skill should be used when tasks involve pa...
extract-moves-from-video
by letta-ai
This skill provides guidance for extracting text commands, moves, or typed input from video recordings using OCR. It applies when extracting gamepl...
feal-differential-cryptanalysis
by letta-ai
Guidance for implementing differential cryptanalysis attacks on FEAL and similar Feistel ciphers. This skill should be used when asked to break FEA...
feal-linear-cryptanalysis
by letta-ai
This skill provides guidance for FEAL cipher linear cryptanalysis tasks. It should be used when recovering encryption keys from FEAL-encrypted data...
filter-js-from-html
by letta-ai
Guidance for removing JavaScript from HTML while preserving structure and formatting. This skill applies when filtering XSS vectors, sanitizing HTM...
financial-document-processor
by letta-ai
Guidance for processing financial documents (invoices, receipts, statements) with OCR and text extraction. This skill should be used when tasks inv...
fix-code-vulnerability
by letta-ai
Guidance for identifying and fixing security vulnerabilities in code. This skill should be used when asked to fix security issues, address CVEs or ...
fix-git
by letta-ai
Guide for recovering lost Git commits, resolving detached HEAD states, and fixing common Git repository issues. This skill should be used when user...
fix-ocaml-gc
by letta-ai
Guide for debugging and fixing bugs in the OCaml garbage collector, particularly memory management issues in the runtime's sweeping and allocation ...
gcode-to-text
by letta-ai
Decode and interpret text content from G-code files by analyzing toolpath geometry and coordinate patterns. This skill should be used when extracti...
git-leak-recovery
by letta-ai
This skill provides guidance for recovering secrets or sensitive data that have been removed from Git history through operations like reset or reba...
git-multibranch
by letta-ai
Guidance for setting up Git-based multi-branch deployment systems with SSH access, web servers, and automated deployment hooks. This skill should b...
gpt2-codegolf
by letta-ai
Guidance for implementing neural network inference (like GPT-2) under extreme code size constraints. This skill should be used when tasks require i...
headless-terminal
by letta-ai
This skill provides guidance for implementing headless terminal interfaces that programmatically control interactive shell sessions. Use this skill...
hf-model-inference
by letta-ai
Guidance for setting up HuggingFace model inference services with Flask APIs. This skill applies when downloading HuggingFace models, creating infe...
install-windows-3-11
by letta-ai
Guidance for setting up legacy Windows VMs (like Windows 3.11) in QEMU with web-based remote access via noVNC. This skill should be used when tasks...
install-windows-311
by letta-ai
Guidance for installing and running Windows 3.11 in QEMU with VNC access and web-based noVNC interface. This skill should be used when tasks involv...
kv-store-grpc
by letta-ai
Guide for implementing gRPC-based key-value store services in Python. This skill should be used when building gRPC servers with protobuf definition...
large-scale-text-editing
by letta-ai
Provides strategies for efficiently transforming large text files (thousands to millions of lines) using text editors like Vim, sed, or awk. This s...
largest-eigenval
by letta-ai
Guidance for optimizing numerical linear algebra computations, particularly finding eigenvalues of small dense matrices faster than standard librar...
learning-sdk-integration
by letta-ai
Integration patterns and best practices for adding persistent memory to LLM agents using the Letta Learning SDK
letta-agent-designer
by letta-ai
Guide for designing effective Letta agents. This skill should be used when users need help choosing agent architectures, designing memory blocks, s...
letta-memory-architect
by letta-ai
Guide for designing effective memory architectures in Letta agents. Use when users need help structuring memory blocks, choosing between memory typ...
llm-inference-batching-scheduler
by letta-ai
Guidance for implementing batching schedulers for LLM inference systems with compilation-based accelerators. This skill applies when optimizing req...
log-summary-date-ranges
by letta-ai
Guidance for analyzing log files and generating summary reports with counts aggregated across multiple date ranges and severity levels. This skill ...
mailman
by letta-ai
Guidance for setting up and configuring mailing list servers with Postfix and Mailman3. This skill should be used when tasks involve configuring em...
make-doom-for-mips
by letta-ai
Guidance for cross-compiling complex C programs (like Doom) to run on custom MIPS virtual machines or emulators. This skill should be used when tas...
make-mips-interpreter
by letta-ai
Guide for implementing MIPS CPU interpreters/emulators, particularly for running compiled MIPS ELF binaries. This skill applies when building virtu...
mcmc-sampling-stan
by letta-ai
Guide for performing Markov Chain Monte Carlo (MCMC) sampling using RStan or PyStan. This skill should be used when implementing Bayesian statistic...
merge-diff-arc-agi-task
by letta-ai
This skill provides guidance for tasks involving merging git branches that contain different implementations of ARC-AGI pattern recognition algorit...
model-extraction-relu-logits
by letta-ai
Guidance for extracting weight matrices from black-box ReLU neural networks using only input-output queries. This skill applies when tasks involve ...
modernize-scientific-stack
by letta-ai
Guidance for modernizing legacy Python 2 scientific computing code to Python 3. This skill should be used when tasks involve converting outdated sc...
mteb-leaderboard
by letta-ai
Guidance for querying ML model leaderboards and benchmarks (MTEB, HuggingFace, embedding benchmarks). This skill applies when tasks involve finding...
mteb-retrieve
by letta-ai
This skill provides guidance for semantic similarity retrieval tasks using embedding models (e.g., MTEB benchmarks, document ranking). It should be...
multi-source-data-merger
by letta-ai
This skill provides guidance for merging data from multiple heterogeneous sources (CSV, JSON, Parquet, XML, etc.) into unified output formats with ...
nginx-request-logging
by letta-ai
Guidance for configuring Nginx web servers with custom logging, rate limiting, and static content serving. This skill should be used when tasks inv...
openssl-selfsigned-cert
by letta-ai
Guides the creation of self-signed SSL/TLS certificates using OpenSSL, including key generation, certificate creation, combined PEM files, and veri...
overfull-hbox
by letta-ai
This skill provides guidance for fixing LaTeX overfull hbox warnings by making synonym substitutions. It should be used when the task involves reso...
password-recovery
by letta-ai
This skill provides guidance for recovering passwords or sensitive data from disk images, corrupted files, or forensic scenarios. Use this skill wh...
path-tracing
by letta-ai
Guide for reverse-engineering and recreating programmatically-generated ray-traced images. This skill should be used when tasks involve analyzing a...
path-tracing-reverse
by letta-ai
This skill provides guidance for reverse engineering compiled binaries to produce equivalent source code. It applies when tasks require analyzing e...
polyglot-c-py
by letta-ai
Guidance for creating polyglot files that are valid in both Python and C. This skill applies when tasked with writing code that must be parseable a...
polyglot-rust-c
by letta-ai
Guidance for creating polyglot source files that compile and run correctly as both Rust and C or C++. This skill applies when tasks require writing...
portfolio-optimization
by letta-ai
Guidance for implementing high-performance portfolio optimization using Python C extensions. This skill applies when tasks require optimizing finan...
protein-assembly
by letta-ai
Guidance for designing fusion protein gBlock sequences from multiple protein sources. This skill applies when tasks involve combining proteins from...
prove-plus-comm
by letta-ai
Guidance for proving mathematical properties in Coq using induction, specifically addition commutativity and similar arithmetic lemmas. This skill ...
pypi-server
by letta-ai
Guidance for creating Python packages and serving them via a local PyPI server. This skill applies when tasks involve building Python packages (wit...
pytorch-model-cli
by letta-ai
Guidance for implementing CLI tools that perform inference using PyTorch models in native languages (C/C++/Rust). This skill should be used when ta...
pytorch-model-recovery
by letta-ai
Guidance for recovering PyTorch model architectures from state dictionaries, retraining specific layers, and saving models in TorchScript format. T...
qemu-alpine-ssh
by letta-ai
This skill provides guidance for setting up Alpine Linux virtual machines in QEMU with SSH access via port forwarding. It should be used when tasks...
qemu-startup
by letta-ai
This skill provides guidance for starting QEMU virtual machines with proper serial console access, process management, and boot verification. It sh...
query-optimize
by letta-ai
This skill provides guidance for SQL query optimization tasks, including rewriting slow queries for better performance while preserving semantic eq...
raman-fitting
by letta-ai
This skill provides guidance for fitting peaks in Raman spectroscopy data, particularly for materials like graphene. Use this skill when tasks invo...
regex-chess
by letta-ai
Guidance for implementing chess move generation using only regular expressions. This skill applies to tasks requiring encoding game logic (chess, b...
regex-log
by letta-ai
Guidance for constructing complex regular expressions that extract and validate data from log files. This skill applies when building regex pattern...
reshard-c4-data
by letta-ai
Guide for implementing reversible data resharding systems with hierarchical constraints (max files/folders per directory, max file size). Use when ...
rstan-to-pystan
by letta-ai
Guidance for converting R-Stan (RStan) code to Python-Stan (PyStan). This skill applies when translating Stan models and inference code from R to P...
sam-cell-seg
by letta-ai
This skill provides guidance for tasks involving MobileSAM or Segment Anything Model (SAM) for cell segmentation, mask refinement, and polygon extr...
sanitize-git-repo
by letta-ai
Guidance for sanitizing git repositories by identifying and removing sensitive credentials, API keys, tokens, and other secrets. This skill should ...
schemelike-metacircular-eval
by letta-ai
Guide for building metacircular evaluators in Scheme-like languages. This skill applies when implementing interpreters that can interpret themselve...
skill-learning-patterns
by letta-ai
Meta-skill for recognizing learnings, validating improvements, and contributing back to the collective knowledge base. Use when agents discover bet...
sparql-university
by letta-ai
Guidance for writing and verifying SPARQL queries against RDF datasets, particularly university/academic ontologies. This skill should be used when...
sqlite-db-truncate
by letta-ai
Guidance for recovering data from corrupted or truncated SQLite database files through binary analysis and manual parsing. This skill applies when ...
sqlite-with-gcov
by letta-ai
This skill provides guidance for compiling software (particularly SQLite) with gcov code coverage instrumentation, installing to custom prefixes, a...
torch-pipeline-parallelism
by letta-ai
Guidance for implementing PyTorch pipeline parallelism for distributed model training. This skill should be used when tasks involve implementing pi...
torch-tensor-parallelism
by letta-ai
Guidance for implementing tensor parallelism in PyTorch, including ColumnParallelLinear and RowParallelLinear layers. This skill should be used whe...
train-fasttext
by letta-ai
This skill provides guidance for training FastText text classification models with constraints on accuracy and model size. It should be used when t...
tune-mjcf
by letta-ai
This skill provides guidance for optimizing MuJoCo MJCF simulation files to improve performance while maintaining physics accuracy. Use this skill ...
video-processing
by letta-ai
Guide for video analysis and frame-level event detection tasks using OpenCV and similar libraries. This skill should be used when detecting events ...
vulnerable-secret
by letta-ai
This skill provides guidance for extracting secrets from vulnerable executables. It should be used when tasks involve binary analysis, reverse engi...
winning-avg-corewars
by letta-ai
This skill provides guidance for creating CoreWars warriors that achieve target win rates against multiple opponents. Use this skill when tasked wi...
write-compressor
by letta-ai
This skill provides guidance for implementing custom compression encoders that must be compatible with existing decoders (especially arithmetic cod...
github-action
by letta-ai
Skill for GitHub Actions CI environment. Use when running inside a GitHub Actions workflow to update tracking comments, commit code, and interact w...
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