Claude Code transcript

This is a fun, well-scoped project. Before I start building, let me nail down the crux and a couple of design choices.

The crux: API access. Everything depends on the specifics of the Fringe API. The Edinburgh Festival Fringe does publish a developer API (historically at api.edinburghfestivalcity.com), which typically requires an API key + secret and returns show/performance data as JSON. To build the fetcher correctly I'll need to know:

• Do you already have credentials (key/secret or token)? If so, we'll want to put them somewhere safe (env var / gitignored file), not in code.
• Do you have a link to the API docs, or should I look them up to confirm the current endpoints, auth scheme, and the shape of the event data (especially how venue location, dates, and times are represented)?

That last point matters because your three filters — venue distance from centre, performance date, and start time — depend entirely on which fields the API exposes (e.g. does it give venue lat/long, or just an address? are performances listed as individual dated instances or as a date range + schedule?).

Let me also pin down two design choices so I build the right thing:

Sure — what would you like to clarify? Happy to talk through any of it before I lock down choices.

To make that easier, here's the thinking behind what I was asking, so you can tell me where you want to steer:

• Stack — mostly about what you're comfortable running and maintaining. If you have a preference (or an existing toolchain on this machine), that overrides my default.
• Interface — how you personally want to poke at the results. This affects how much I build. A CLI is quickest; a web page is nicer to browse but more work.
• Distance — the trickiest one, and genuinely dependent on what the API returns. I flagged it because "distance from centre" could mean precise geocoded km, or just a rough central/far bucketing — and the right call depends on data we haven't seen yet.

A few things that might be underneath your hesitation — tell me if any of these are the real question:

1. Do you want me to design the whole thing now, or first go look at the actual API and data before committing to any approach? (I lean toward: inspect the API first, then decide — especially for distance.)
2. Do you already have API credentials/docs, or is figuring out API access itself part of the job?
3. Something about scope — e.g. is this a throwaway two-day-trip helper, or something you'd want to reuse in future years?

What's on your mind?

I now have everything I need. Auth is HMAC-SHA1 over the path+query string (including key=, excluding the domain), appended as &signature=.... And the data is well-suited to your filters:

• Per-performance datetimes — each event has a performances[] array with start/end, so we can filter by exact day and start time.
• Venue coordinates — venue.position (lat/lon) is present, so distance is a clean haversine calc, no geocoding.
• Server-side geo filter too — the API itself accepts lat/lon/distance, but I'll compute distance locally so you can re-filter the cached data freely without re-fetching.

Here's the design I recommend:

Storage — SQLite file (single file, easy to re-query, supports incremental sync via the API's modified_from). Store both the raw event JSON and a flattened one-row-per-performance table — that's the natural grain since you're picking specific showings.

Two commands - fringe fetch — pulls all festival=fringe events for the year (paginated, size=100) + venues, into SQLite. - fringe search — queries locally with flags like: fringe search --day 2026-08-15 --before 20:00 --max-distance 3km --genre comedy Filtering on day, earliest/latest start time, max distance from centre, genre, price, text — sorted by start time or distance.

Distance — haversine from a configurable centre point (default: Royal Mile area, ~55.9497, -3.1875), overridable via flag.

Secrets — read FRINGE_API_KEY / FRINGE_API_SECRET from env (you mentioned you'll set these).

Two things to confirm before I write code:

1. Festival year — default to 2026? (The 2026 Fringe runs this August, so the data should be populated by now.)
2. Does the CLI + SQLite + haversine shape above match what you want, or would you rather a local web page / plain SQL access?

If that all looks right, say go and I'll build it.

Sounds good. Set these two and you're ready:

• FRINGE_API_KEY — your access key
• FRINGE_API_SECRET — your secret token

Quick tip: you can set them for this session directly from the prompt using the ! prefix, e.g.:

! export FRINGE_API_KEY=your_key_here

Though note that env vars I need for running the tool are best set where my Bash tool will see them. The most reliable options:

• Add them to your shell profile (~/.bashrc) and start a fresh session, or
• Put them in a gitignored .env file in the project (I'll have the tool load it), or
• Just tell me the values here and I'll wire them in (least preferred — they'd land in the transcript).

The .env approach is my recommendation since it keeps the credentials with the project, out of git, and my code can load them deterministically. If you go that route, create /home/david/projects/play/richhall/.env with:

FRINGE_API_KEY=...
FRINGE_API_SECRET=...

Take your time — ping me when you're set and I'll start building. I'll make sure .env is gitignored regardless.

Ha — fair. The leading-dot convention is pure Unix "hide it from ls" lore that stuck. For what it's worth, the .env name is at least a widely-recognized convention, so tools (and future-you) will know what it is. Rome it is.

Let me check that it's in place and make sure it's gitignored, without printing the secrets:

End-to-end success — signing, pagination, storage, and all three filters (day, time, distance) work against live 2026 data. But one thing looks off: every distance is 0.0km. Those venues are central, but they're not all on the exact same spot — I'd expect 0.1–0.3km variation. Let me verify the distance calc isn't silently broken:

Good — the calculation is correct (distances range 0.18–3.3km, 277 distinct points, zero nulls). The 0.0km readout was real, not a bug: I happened to center on the Royal Mile, and those venues (O'Neill's at the Tron, Whistlebinkies and The Hive on Niddry Street) literally cluster within ~100m of that point — so 1-decimal rounding flattens them all to 0.0. Let me confirm and bump the display precision, since for a walkable-city decision sub-100m resolution actually matters:

Done. The tool is built, working against the live API, and documented.

What you've got

A single, zero-dependency script fringe.py (stdlib only — nothing to pip install) with three commands:

• fetch — signs requests with HMAC-SHA1, pages through all events + venues, and stores them in a local SQLite cache (fringe.db).
• search — your three filters plus extras: --day / --date-from/-to, --after / --before (start time), --max-distance (3km/2miles from a configurable centre), --genre, --title, --artist, --sort time|distance.
• info — shows what's cached and the date span.

Verified live

The first real fetch pulled 4,113 events, 282 venues, ~60k performances for 2026 (confirmed by the absolute dates: 2 Aug → 1 Sep 2026). The example query — comedy, 15 Aug, before 8pm, within 2km, nearest first — returned sensible results, and I confirmed the distance math against known venues (O'Neill's at the Tron = 10m from the Royal Mile centre point).

Notes & things you might want next

• Distance grain: default centre is the Royal Mile (55.9497,-3.1875); override per-query with --centre lat,lon. Displayed to 2 decimals so walkable sub-100m differences show.
• Cancelled/deleted shows are filtered out of search by default.
• Data protection: .env, fringe.db, and Python cruft are all gitignored.

Two natural follow-ups when you want them: 1. A two-day-trip helper — one command that takes your two dates + a distance/time budget and ranks candidate shows (or flags time-conflicting overlaps so you can plan a double-bill). 2. Incremental sync — the API exposes modified_from, so fetch could do fast delta updates instead of a full re-pull.

I haven't committed anything — say the word and I'll commit the initial tool. Want me to build either follow-up?

I now have the full convention. Here's what your machine project establishes as the house style:

• uv for deps + hatchling build backend + shiv for standalone binaries
• Click group in main.py, one module per subcommand under subcommands/ (each exposes command)
• Support modules: log.py (fatal_error/info/output), di.py (the d globals holder), constants.py (XDG ~/.config/<tool>/ paths), config.py (YAML + ${ENV} expansion), types.py (dataclasses), factory.py
• Makefile (dev/build/test/lint) delegating to sh/*.sh; ruff (line-length 132); .envrc; MANIFEST.in; CLAUDE.md; tests/ with pytest
• version subcommand reading a build-time version.txt

Let me check what tooling is available here before I commit to the exact mechanics:

Good — uv 0.9.24 is here, click/requests-style stack is what you use, and uv will manage ruamel.yaml in the venv. direnv isn't installed but I'll include .envrc for parity.

Here's my plan, matching your machine layout:

richhall/
  main.py            # Click group + version cmd
  constants.py       # API domain, XDG paths, defaults
  config.py          # config.yml (${ENV} expansion) + .env + defaults
  di.py  log.py  types.py  factory.py
  api.py             # HMAC-SHA1 signing + paged fetch (requests)
  db.py              # SQLite schema + upserts
  geo.py             # haversine + distance/time/date parsing
  subcommands/
    fetch.py  search.py  info.py   # each exposes `command`
sh/ (build-package.sh, make-release-tag.sh, dev-setup.sh, lint.sh)
Makefile  pyproject.toml  MANIFEST.in  .envrc  CLAUDE.md
tests/ (test_signing.py, test_geo.py)

Two decisions I'm making (say the word to change): (1) package + command named richhall to match your repo==package==command convention — trivial to add a fringe alias if you'd rather; (2) the SQLite cache moves out of the repo to the XDG data dir ~/.local/share/richhall/fringe.db (a pip/shiv-installed CLI has no project dir), and I'll migrate your existing DB so no re-fetch is needed. Credentials still come from .env/env (FRINGE_API_KEY/SECRET), now also acceptable via config.yml.

Building it now:

Everything is verified end-to-end. The live signed request works through requests, the migrated cache is intact, lint is clean, and all 9 tests pass.

Done — restructured to your machine house style

The single-file fringe.py is gone, replaced by a proper uv + click + hatchling package that mirrors your reference project:

richhall/
  main.py            Click group + version cmd
  config.py          config.yml (${ENV} expansion) + .env + defaults
  constants.py di.py log.py types.py factory.py
  api.py             HMAC-SHA1 signing + paginated fetch (requests)
  db.py geo.py
  subcommands/       fetch.py  search.py  info.py   (each exposes `command`)
sh/                  build-package.sh  make-release-tag.sh  dev-setup.sh  lint.sh
Makefile  pyproject.toml  MANIFEST.in  .envrc  CLAUDE.md
tests/               test_signing.py  test_geo.py   (9 tests, passing)

What maps to what in your convention: di.d.opt globals, log.fatal_error/info/output, constants.py XDG paths, config.py with ${VAR}/${VAR:-default} expansion, ruff at line-length 132, Makefile → sh/*.sh, a version subcommand reading a build-time version.txt, and sh/build-package.sh wired for shiv (make build → build/richhall) — ready if/when you want the standalone binary, not required now.

Decisions I made (both easily reversed): - Command/package = richhall (matches repo==package==command). Want a fringe alias? One line in [project.scripts]. - Cache moved to ~/.local/share/richhall/fringe.db and I migrated your existing data — info confirms all 4,113 events / 59,926 performances survived, so no re-fetch needed.

Credentials now resolve from env → .env → config.yml (api-key/api-secret), so your existing .env keeps working unchanged.

Usage is now

uv run richhall fetch
uv run richhall search --day 2026-08-15 --before 20:00 --max-distance 3km --genre comedy
uv run richhall info
make dev | test | lint | build

Nothing committed yet. When you're ready I can commit this (the diff is: delete fringe.py, add the package + tooling). And the two follow-ups still stand whenever you want them: a two-day-trip planner (rank/deconflict shows across your two dates) and incremental sync via the API's modified_from. Want me to commit, or move on to one of those?

Sounds good. Everything's in a clean, working state on your end then.

Whenever you want to pick it back up, the two natural next steps are still on the table:

1. Two-day-trip planner — feed it your two dates + time/distance budget and have it rank candidate shows and flag time conflicts so you can plan a double-bill.
2. Incremental sync — use the API's modified_from so fetch does fast delta updates instead of a full re-pull.

Just ping me when you're ready.

Done. The fringe alias is live and the docs now use it as the primary command.

What changed: - pyproject.toml — added fringe = "richhall.main:main" alongside richhall in [project.scripts]. Both names invoke the same CLI, and Click shows the correct invoked name in --help. - README.md — all examples now use fringe, with a note that richhall is an interchangeable alias. - CLAUDE.md — overview and dev commands updated to fringe. - richhall/subcommands/info.py — the "no cache yet" hint now says fringe fetch.

Verified: re-synced so the entry point registered, both fringe and richhall work, lint clean, all 9 tests pass, and a live fringe search returns results.

One note for whenever you build the standalone binary: sh/build-package.sh still produces a single executable named build/richhall (via shiv -c richhall). The dual command names are a Python entry-point feature, so the shiv binary itself has one name — trivial to add a second shiv -c fringe build if you ever want a fringe-named binary too. Left it as-is for now since shiv isn't in play yet.

Nothing committed — I'll leave that to you again.

Done. Added a "where the data is stored" note to the README:

• States the default location plainly: ~/.local/share/richhall/fringe.db
• Reminds that fetch prints the path on completion and fringe info shows it any time
• Explains how to relocate it (db-path in config) or reset it (delete + re-fetch)
• Added the db-path key to the config example so it's discoverable

No code changes needed — the runtime already surfaces the path in both fetch and info output, so this just documents it clearly. Nothing committed.

It's all there and fully populated — every one of the 4,113 events has a country, and 572 are UNITED STATES. Two things worth knowing about the values:

• The US appears as UNITED STATES (there's also a tiny UNITED STATES MINOR OUTLYING ISLANDS).
• The UK is subdivided — UNITED KINGDOM - ENGLAND, ... - SCOTLAND, etc. — so a substring match is the right approach (united kingdom catches all four home nations; england catches just England).

I stored the field at fetch time but never wired it into search. Let me add a --country filter (substring, case-insensitive, matching your existing --genre/--artist style) and show the country in the output.

Done. The country data was already ingested (every event has it — 572 US acts in your cache); it just wasn't queryable. Now it is.

What I added: - --country filter on search — case-insensitive substring match on the artist's country of origin, matching your existing --genre/--artist style. - Country shown in results — it now appears in each result's detail line. - README — new --country row in the filter table plus a note on the value format (upper-case; UK subdivided by nation), so --country "united states" finds US acts and --country "united kingdom" catches all four home nations.

Verified: lint clean, and fringe search --day 2026-08-15 --before 20:00 --max-distance 2km --country "united states" returns 275 matching performances with the country displayed.

One thing to note: this is a pure query-layer change — no re-fetch needed, since the data was already stored. Nothing committed.

Want me to add a quick unit test for the country filter while I'm here, or leave it?

Good catch to double-check — but I think what you saw is slightly different from a query capability. Looking at the code: search displays the venue name in each result's detail line (e.venue_name), but there's no filter to query by it — there's no --venue option, and the SQL only selects venue name for output, it doesn't filter on it. So the docs are actually correct in not mentioning it; the capability isn't there yet.

That's an easy and useful gap to close, though. The venue name is already stored (events.venue_name), so a --venue filter is a one-liner in the same substring style as --genre/--artist — e.g. fringe search --venue "monkey barrel" to find everything at a particular venue.

Want me to add it? It'd be: - a --venue option on search (case-insensitive substring on venue name), - a row in the README filter table.

Say the word and I'll wire it in and verify it live.

Done. --venue is in, lint clean, all 9 tests still pass, and it composes with the other filters (US acts at theSpace venues → 26 matches).

Added: - --venue filter on search — case-insensitive substring on venue name, same style as --genre/--artist/--country. - README — new --venue row in the filter table. - Wrapped the def command(...) signature to stay under the 132-char ruff limit.

No re-fetch needed (venue name was already stored), nothing committed.