canned-prompts/README.md

# canned-prompts seed

> **Collect, reuse and share prompts and prompt templates.**

This bundle contains a first project seed for `canned-prompts`:

- [`INTENT.md`](INTENT.md) — project mission, boundaries, principles, and success criteria.
- [`CannedPromptFormat.md`](CannedPromptFormat.md) — the package-format specification, currently revision v0.2.
- [`reference/`](reference/) — deliberately small Python CLI implementing the basic lifecycle.
- [`examples/pqrst-estimate/`](examples/pqrst-estimate/) — a real package that can be used to exercise the implementation.
- [`examples/house-style/`](examples/house-style/) — a `type: fragment` package that `pqrst-estimate` composes.

## Try the reference implementation

```bash
cd reference
python -m venv .venv
. .venv/bin/activate            # Windows: .venv\Scripts\activate
pip install -r requirements.txt

# add the included examples to your local catalog
python canned_prompts.py add ../examples/house-style
python canned_prompts.py add ../examples/pqrst-estimate

# find and inspect it
python canned_prompts.py search pqrst
python canned_prompts.py show practice/pqrst-estimate

# see how each input and parameter resolves, and where the value came from
python canned_prompts.py resolve practice/pqrst-estimate \
  --set session_summary="Implemented feature X, read unfamiliar code, added tests."

# render it
python canned_prompts.py render practice/pqrst-estimate \
  --set session_summary="Implemented feature X, read unfamiliar code, added tests."

# publish it to the local filesystem registry
python canned_prompts.py publish ../examples/pqrst-estimate

# remove the local catalog if you want to simulate another machine, then install
python canned_prompts.py install practice/pqrst-estimate --version 0.1.0
```

Packages added from a path are filed under the registry name `local`; packages
installed from a registry are filed under that registry's name. `search` prints
qualified references:

```text
house:practice/pqrst-estimate@0.1.0  PQRST Estimate
local:practice/pqrst-estimate@0.1.0  PQRST Estimate
```

By default the reference tool uses:

```text
~/.canned-prompts/catalog
~/.canned-prompts/registry
```

Override them with:

```text
CANNED_PROMPTS_HOME=/some/path
```

or command-level `--catalog` / `--registry` options.

## Resolution vs rendering

The format separates the two steps (`CannedPromptFormat.md` § 5.1).
Resolution decides a value for every input and parameter and may be
non-deterministic; rendering substitutes those values and always is. An input
may declare a default that is either a static value or a *derived* one — a
prompt that a capable consumer may run to produce the value, declared without
naming any resolver or model.

This reference tool never calls a model, so it resolves supplied values and
static defaults only, and reports anything it cannot derive instead of
rendering a prompt with a silent hole in it.

## Composition

A package composes another by declaring it as a dependency and binding it to an
input default. There are two kinds:

- **`include`** — inline the other package's *rendered template* as text.
  Deterministic, needs no model, and the reference CLI performs it.
- **`derive`** — use the other package's *result*, obtained by running it.
  Only a consumer able to run it can supply one.

`examples/pqrst-estimate` includes `examples/house-style`, so a shared style
block is a versioned package rather than copied text:

```yaml
dependencies:
  prompts:
    - id: practice/house-style
      version: ">= 0.1.0"
      requirement: required

inputs:
  - name: house_style
    required: false
    default:
      include: practice/house-style
```

A dependency pins an exact version by default; `any`, `newest` and a `>= X.Y.Z`
lower bound are explicit opt-ins. These are per-dependency selectors, not
version ranges — there is no solver, and constraint resolution across a
dependency graph remains a non-goal.

There is no template inheritance. A package never extends another or overrides
its parts; composition is by reference only, so a package's content stays
readable without chasing ancestors.

## Evals

An eval file declares what to assess. `evals/` used to hold whatever an author
put there; it now has one schema the tooling understands, split along the same
line as composition:

- **render checks** — deterministic assertions about the *rendered prompt*
  (`contains`, `not_contains`, `resolves_all`). No model needed, so the
  reference CLI runs them.
- **output criteria** — statements about a good *result*. Declared, not run.

```bash
python canned_prompts.py eval practice/pqrst-estimate
```

```text
local:practice/pqrst-estimate@0.2.0
  evals/quality.yaml (pqrst-estimate-quality)
    render  PASS  contains "must sum to exactly 100%"
    render  PASS  resolves_all
    output  --    4 criteria declared (not run: judging output needs a model)
```

An eval declares assessment, never results. Results are run evidence and live
outside the immutable package.

## Required versus compatible

Two fields used to say overlapping things about capabilities. They now differ
in one word each:

| Field | Meaning | Absence means |
|-------|---------|---------------|
| `dependencies` | **required** — does not work without it | a consumer should warn or refuse |
| `compatibility` | **observed** — known to work with it | nothing; it is information |

Dependencies come in three kinds, separated by what the format can do about
them: `prompts` are packages it resolves by id and version, `context` names
things it does not package at all (an information space, an API, a corpus the
caller supplies), and `capabilities` are what the environment must be able to
do. `resolve` lists the last two, since the reference tool cannot verify
either:

```text
requires (this tool cannot verify these):
  capability  web-search
  context     repository-tree — A listing of the repository under review.
```

## Registries and identity

An id names a package *within a registry* (`CannedPromptFormat.md`
§ 3.2). The same id obtained from two registries may be two different
packages, so the catalog keeps them apart and a bare id that matches more than
one is reported as ambiguous rather than guessed. Qualify it when you need to:

```bash
python canned_prompts.py render house:practice/pqrst-estimate --set ...
```

A registry may describe itself with an optional `registry.yaml` naming it and
recording which namespaces are claimed and under what policy. Those claims are
descriptive: a filesystem registry cannot authenticate a publisher, and
signing and trust scoring are explicit non-goals. Ownership lives with the
registry rather than in the package, so no package carries an unverifiable
assertion of authority.

## Packaging and versions

`add`, `publish` and `install` copy the reserved paths (`prompt.yaml`,
`prompt.md`, `README.md`, `LICENSE`, `examples/`, `evals/`, `assets/`) plus
anything a manifest field references — and nothing else, as § 2 requires. What
was left behind is reported rather than silently dropped:

```text
not packaged (not a reserved path, not referenced by the manifest): .git/, .venv/, notes.txt
```

Version precedence follows SemVer, so `1.0.0` outranks `1.0.0-rc1`, and
`any`, `newest` and `>= X.Y.Z` skip prereleases entirely. Publishing a release
candidate never changes what existing consumers resolve to; name it exactly to
use it.

## Deliberate limitations

This seed has no hosted registry, model execution, authentication, network access, dependency resolver, or social features. `publish` and `install` operate on a filesystem registry so that the package semantics can be tested before infrastructure is built around them.