Tools for Token Maximalists

A token maximalist wants the most useful work out of every token, every subscription, and every context window. These tools serve that person. Excalibur (xcb) sends work to whichever paid plan has quota left, Gobstopper shrinks long sessions, Sys1 saves repository check results and adds scoped code review, aicharts measures what the work cost, and ALGAL keeps the programs and records that make a run replayable. Direct gives browser agents repeatable app states, Clankdar checks what an agent can solve, Valhalla provides shared rooms for agents and their owners, and SWFT reports on how companies put agents to work.

Tools

Excalibur (xcb)

Excalibur (xcb) routes coding tasks across the Claude, Codex, and Devin subscriptions you already pay for. Each task runs on an account that is signed in, idle, and not at a known usage limit, on a model that fits the work.

It favors unused quota that is about to reset and holds the chosen account until the provider process exits. It was formerly AgentMixer. A self-tuning version of its managed harness is in development; the current build does not run self-modifying routing policies.

ALGAL

ALGAL is a programming language and VM for AI agent programs. A program can wait for your approval, pick up after a crash, and replay what it did from its receipts.

Receipts are the record ALGAL keeps of each step. That record replays offline without your store, credentials, or model. A native Rust CLI and a standalone Bun runtime implement the same specs.

Gobstopper

Gobstopper is a free, open-source command-line tool that makes long coding sessions smaller. A local proxy compacts live Claude Code and Codex requests. For saved sessions, it writes a smaller copy and keeps the original in a local vault.

Between compactions the proxy reuses the compacted prefix byte for byte, so the provider’s prompt cache stays valid. A summary is never summarized again, and when a request fails for any reason other than length, the proxy forwards the client’s original bytes.

Sys1

Sys1 runs your repository check, keeps the output local, and saves a result you can inspect later. Add a scoped review when you need a second pass on the changes. Review and completion checks are advisory.

TypeSafe publishes a figure of about $0.0004 and 0.4 seconds per decision for Jev. Installing Sys1 downloads no model weights.

aicharts

aicharts plots published AI benchmark scores against cost and tokens per task, marking the best score at every budget. A local collector measures your own agents' token use.

The local collector uses a parser vendored from Tokscale that covers 55 sources, and reports you open stay in your browser tab.

Direct

Direct gives browser agents repeatable app states for frontend testing. This development-only TypeScript library serves signed-in, empty, and edge-case states on fixture data, each at its own URL.

Clankdar

Clankdar checks what AI agents can solve. Each check gives your agent fresh puzzles, scores every answer exactly, and signs a receipt that anyone can recheck.

Valhalla

Valhalla is open-source software for peer-to-peer rooms shared by AI agents and the people who run them. Every post is signed by the key that wrote it.

SWFT

SWFT is a free publication about software factories, the repeatable systems where AI agents do scoped work while checks and people decide what ships. It compares how named companies run them.

How they connect

Excalibur (xcb) → ALGAL: replays

xcb records task transitions as ALGAL receipts that xcb tasks verify replays, plans schedules with ALGAL programs, and runs xcb daemons as durable ALGAL processes that wake on inbox messages.

ALGAL → Excalibur (xcb): delegates

An ALGAL program hands coding work to xcb through its xcb executor, which runs xcb in a chosen directory and reads its JSON output. ALGAL never copies credentials or reimplements account switching, so the program can use any subscription xcb can reach.

Excalibur (xcb) → Gobstopper: compacts

xcb embeds Gobstopper’s core library and turns it on by default, eliding stale tool outputs while the full history is kept. xcb plugins disable gobstopper turns it off.

Excalibur (xcb) → aicharts: exports

xcb embeds the aicharts core and, when you turn on exports, writes session files in the aicharts format. Automatic upload is not available.

aicharts → Gobstopper: reads

aicharts reads Gobstopper’s compaction telemetry. It takes the numbers only and never reads transcript content.

Excalibur (xcb) → Sys1: judges (planned)

xcb has an optional judge that speaks the Jev API, and Sys1’s daemon serves a Jev-compatible endpoint. xcb’s judge accepts only HTTPS endpoints and Sys1’s local daemon serves plain HTTP, so connecting them needs work that has not been done. Sys1 has no code dependency on the other tools.