Palaestra

Runs · Palaestra mini run · control vs planning

Claude Haiku 5.5

Palaestra mini run · control vs planning, arm control scaffold.

Summary

Claude Haiku 5.5 ran for 7.2 h (0.3 d) across 24 sessions, completed 5 quests1, and spent $0.27 on inference ($0.05 per quest). It landed 44 confirmed transactions. Stop: operator stop at 7.3 h (planned 10 h).

Quests
5
no level-ups · 113 MUSU reported
Spend
$0.27
9.7M tokens
Per quest
$0.05
spend ÷ quests
Hours
7.2
0.3 d
Sessions
24
11 failed tool calls
Txs
44
0 reverted on-chain

§1Initial conditions

Table 1 — What the agent started with, from run_start, the first session_start, the run manifest.

ObjectiveYour objective is to complete as many quests as possible.
Model idanthropic/claude-haiku-5.5
Run idkamiarena-mini-haiku-5.5-control
Window (UTC)2026-10-17 13:16 UTC → 2026-10-17 20:27 UTC · stopped
Budget / box$4 harness budget, $5 key cap · harness budget $4 at first session
Harnesskami-agent · control · lens 1.0.5 · 99 tools
Harness · agent · gdddf7129f0b762 · 8e444bb5ca4f · 3c6f4f948b29
Manifest hashf9f0e41490da
Prompt hash7c0e7ca6d296
Tool surface hash2453f30296e0
Prices, $/Mtokin 0.1 · out 0.5 · cache read 0.01 · write 0.125
StopOperator stop at 7.3 h (planned 10 h)
CreditPalaestra (Coopes)

1. Prompt

system.txt · 1,045 characters
You are an autonomous agent in Kamigotchi, a persistent on-chain world shared with other players. You act in periodic sessions; the world advances between them. You act only through tool calls. No human reads or replies to anything you write; text outside tool calls has no effect on the world.

Your objective is to complete as many quests as possible.

The workspace/ directory survives between sessions; nothing else you write or think does. Its use and structure are entirely up to you.

The reference/ directory holds the game's design document. It is read-only.

You have game tools, provided by the environment, and scaffold tools for files, scheduling, and status.

You choose when to wake next by calling set_next_wake, between 5 minutes and 24 hours from now.

On-chain actions cost gas even when they fail: a reverted transaction consumes gas without changing the world. Diagnose why an action failed before submitting it again. Gas is paid in ETH from your wallets; their ETH balances are shown to you at the start of every session.
orientation.txt · 556 characters
You own kamis (creatures). A kami placed at a harvesting node earns MUSU (the currency) over time; harvesting drains its health, resting restores it, and a kami with low health can be liquidated by other players. MUSU buys items; food restores health. Harvesting earns experience; experience lets a kami level up, which grants a skill point spent on skills that improve its stats. Quests reward MUSU, items and experience for completing objectives; quest objectives count your account's totals across all your kamis. Every on-chain action costs gas (ETH).
planning.txt · 184 characters
The file workspace/plan.md is where your goals and plan live. Its contents are shown to you at the start of every session, up to the first 8192 bytes. Keeping it current is up to you.
kickoff.txt · 15 characters
Session start.
continue.txt · 49 characters
Continue. To end this session, call end_session.

§2Outcome

Table 2 — Financial result and activity. S(t) as defined by KamiBench, computed independently by the KamiBench lab from chain data.

Inference$0.27 · 9.7M tokens
Gaspending
Earningspending
S(t)pending
Quests5 · agent-reported
MUSU (reported)113· provisional: harvest payouts and liquidation spoils from tool results, before chain verification; the verified figure is the earnings term of S(t)
Confirmed transactions44 · 0 reverted · 4 rejected before sending

§3Combat

Kills0
Failed attacks0
Deaths0 · lower bound, from what the agent observed; chain-verified at close

§4Learning

Does the agent stop repeating its mistakes and get more done per dollar as the run goes on? Descriptive only: without a memory-off arm these figures show change, not its cause.

Repeat-mistake rate29% of 7 failed tool calls repeat a class already seen earlier in the run (5 distinct classes). A class is the tool plus its normalised error reason.
Failed after noting it43% of failed calls came after the agent had written about that tool or reason in its notes.
Quests per $35.4 early → 13.5 late (0.4×) · first vs last quarter of elapsed time so far (1.8 h each): 4 vs 1 quests for $0.11 vs $0.07
Quests per hour2.2 early → 0.6 late
Notes39 writes · read 42 times by the agent · size 1.6k → 1.8k → 0.5k → 0.6k → 0.6k → 0.9k → 0.5k → 0.7k (latest writes)

§5Trajectory

Figure 1 shows how quests, spend and session activity accumulated over the run.

Claude Haiku 5.5 session without a quest

(a) Cumulative quests completed

(b) Cumulative inference spend, USD

(c) Cost of each session, at its start time

Fig. 1 — Trajectory over hours elapsed since the first session; the three panels share one time axis. (a) counts successful quest completions; hover a step for the quest title. (b) is cache-aware spend from per-call telemetry. (c) draws one rule per session, its height that session's cost, in colour where the session completed a quest.

§6Key moments

Selected mechanically from the record: first transaction, first and last quest, first level-up, first kill, death and kami purchase, the longest quest-free stretch, and the sessions with the most failed tool calls.

  1. h 0.2

    First confirmed on-chain transaction (fund_operator), session 2. session 2 →

  2. h 0.2

    First quest completed: Welcome to Kamigotchi World, session 2. session 2 →

  3. h 1.2

    Bought a starter kami from the vendor for 0.004 ETH, session 5. session 5 →

  4. h 6.7

    Last quest in record: What Kami Do: Scavenging (5 total).

§7Quests

Table 3 — Quests in order of completion. Titles from quest reads in the transcripts.

#QuestHourSession
1Welcome to Kamigotchi World0.22
2Beginning Your Journey1.04
3Your First Kami1.25
4What Kami Do: Harvesting1.56
5What Kami Do: Scavenging6.722

§8Agent's notes

Workspace files as they stood when the data was copied.

notes.md · 832 characters
# Kamigotchi notes
- Owner 0x…wallet hidden. Operator 0x…wallet hidden. Account "ClaudeAgent" index 3416, room 3.
- a kami in the live season (Torii Gate node 3), HARVESTING. Cooldown per harvest_collect ~644s (~11 min).
- Quests 1-5 COMPLETE (5 done session 24). Quest 6 (Liquidating) now unlockable: accept it when ready (needs liquidate action on another harvest).
- Quest 7 Making MUSU in progress: collect 500 MUSU total (ITEM_TOTAL, item 1). ~6 MUSU per collect -> ~80 collects.
- Quest 8 after 7.
- SCAVENGE POINTS ONLY ACCRUE ON harvest_collect / stop. Each collect ~3 pts. Tier 100 pts at node 3 -> scavenge_claim_and_reveal node 3.
- harvest_stop fails during cooldown.
- Gas: operator ~0.00385 ETH, owner ~0.00148 ETH. Collect costs ~5.5e-6 ETH each.
- journal/ is read-only; session logs go in workspace/session_log.md.
session_log.md · 685 characters
Session 6-23 (earlier): bought a kami in the live season, quests 1-4 done, harvest_collect every cooldown.
Session 24 (block ~34582357): harvest_collect +6 MUSU, scavenge 103 pts -> claimed tier 1 + revealed (Wooden Stick). Quest 5 COMPLETE (block 34582375). Next: harvest_collect each cooldown (~11 min) to accumulate MUSU for quest 7 (needs 500 MUSU collected).
Session 25 (block ~34582956): harvest_collect +6 MUSU (quest 7 progress ~ continuing). Cooldown until 1792268406. Quest 7 still in progress.
Session 26 (block 34583238): harvest_collect +4 MUSU. Cooldown until 1792269046. Quest 7 still in progress. lens_quests full output is huge (188 quests) - use quest_state instead.

§9Sessions

One row per session: what it worked toward, why it ended, what it cost. Open a row for what the agent said and did; reads are grouped, failed calls are folded under their step, tx marks an on-chain transaction.

24 7.2 1 $0.011 by itself
23 7.0 1 $0.010 by itself
22 6.7 4 $0.012 by itself
21 6.5 1 $0.006 by itself
20 6.2 1 $0.006 by itself
19 5.9 1 $0.006 by itself
18 5.7 1 $0.011 by itself
17 5.4 1 $0.011 by itself
16 5.2 1 $0.010 by itself
15 4.9 1 $0.006 by itself
14 4.7 1 $0.007 by itself
13 4.5 1 $0.007 by itself
12 4.4 1 $0.006 by itself
11 4.2 1 $0.007 by itself
10 4.0 1 $0.006 by itself
9 3.8 1 $0.007 by itself
8 3.5 1 $0.015 by itself
7 2.5 $0.010 by itself
6 1.4 6 $0.021 by itself
5 1.2 4 $0.021 by itself
4 1.0 3 $0.023 by itself
3 0.5 3 $0.015 by itself
2 0.2 8 $0.026 by itself
1 0.0 $0.007 by itself

Notes

  1. Quests and level-ups count successful complete_quest, level_up_kami and level_to tool calls in telemetry. They are agent-reported; chain verification is to follow.
  2. Spend is priced with the run's pinned price table (Table 1). Earnings, gas and S(t) are pending the independent computation.