How do I install the Ell Foundation skill?

Run npx skillmds@latest add ryan-brosas/ell-foundation in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Ell Foundation safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Ell Foundation?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Ell Foundation free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Ell Foundation?

ryan-brosas (@ryan-brosas) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Ell Foundation by ryan-brosas — Agent Skill

Name: Ell Foundation
Author: ryan-brosas

Ell Foundation

Use when porting ell (language model programming) — LMP decorators, _lstr origin tracing, lexical-closure versioning, provider SPI, SQL/alembic store, evaluations, studio; prompt-to-program frameworks that version prompts as code (lexical closures + content hashes), trace which model call produced which text fragment through arbitrary string mutations, adapt one call pipeline to many vendor APIs behind a validation-enforced provider interface, or persist/version LLM programs and invocations in SQLite/Postgres with alembic. Source code and direct tests are ground truth; references carry decisive excerpts and graph retrieval.

ryan-brosas ed879e3 27 files · 101.1 KB Updated Sep 17, 2026

File contents

ell: Language Model Programming Foundation

Foundation contract

This is a cold, source-specific foundation, not an operational procedure. It is historical, revision-pinned evidence rather than timeless guidance. Current project source, tests, requirements, and runtime behavior outrank this projection and decide what ships.

Provenance and revision

Source record: ell; portable upstream identity, license, coverage caveats, and retrieval history are preserved in the index.
Recorded revision: main@9d129846203e75efeb4e5cddd3fb1c164dc0b243.
Full provenance, coverage caveats, boundaries, and preserved evidence: references/index.md.

Topic map

Representative topics: Decorator pipeline; Traced strings; Message model; Tools; Provider SPI; Provider SPI / config; Versioning; Tracking.
Scope and retrieval questions: references/index.md#use-this-for.
Complete capsule chooser: references/index.md#load-the-matching-source-dump.
Detailed grouped map: references/index.md#capsule-map.
Source limitations and portability boundaries: references/index.md#boundaries.

Retrieval

Open the index, choose one capsule matching the active question, and load only that capsule. Revalidate its cited source and revision before relying on it. Do not bulk-load the inventory, treat historical claims as current truth, or apply this foundation as a procedure.

---name: ell-foundationdescription: Use when porting ell (language model programming) — LMP decorators, _lstr origin tracing, lexical-closure versioning, provider SPI, SQL/alembic store, evaluations, studio; prompt-to-program frameworks that version prompts as code (lexical closures + content hashes), trace which model call produced which text fragment through arbitrary string mutations, adapt one call pipeline to many vendor APIs behind a validation-enforced provider interface, or persist/version LLM programs and invocations in SQLite/Postgres with alembic. Source code and direct tests are ground truth; references carry decisive excerpts and graph retrieval.---# ell: Language Model Programming Foundation## Foundation contractThis is a cold, source-specific foundation, not an operational procedure. It ishistorical, revision-pinned evidence rather than timeless guidance. Currentproject source, tests, requirements, and runtime behavior outrank thisprojection and decide what ships.## Provenance and revision- Source record: `ell`; portable upstream identity, license, coverage caveats, and retrieval history are preserved in the index.- Recorded revision: `main@9d129846203e75efeb4e5cddd3fb1c164dc0b243`.- Full provenance, coverage caveats, boundaries, and preserved evidence: `references/index.md`.## Topic map- Representative topics: Decorator pipeline; Traced strings; Message model; Tools; Provider SPI; Provider SPI / config; Versioning; Tracking.- Scope and retrieval questions: `references/index.md#use-this-for`.- Complete capsule chooser: `references/index.md#load-the-matching-source-dump`.- Detailed grouped map: `references/index.md#capsule-map`.- Source limitations and portability boundaries: `references/index.md#boundaries`.## RetrievalOpen the index, choose one capsule matching the active question, and load onlythat capsule. Revalidate its cited source and revision before relying on it. Donot bulk-load the inventory, treat historical claims as current truth, or applythis foundation as a procedure.

Frequently asked questions