Pith Number

pith:L2P4S757

pith:2026:L2P4S757ZPAEOW3TOZALVQZPZ6

not attested not anchored not stored refs pending

UniToolCall: Unifying Tool-Use Representation, Data, and Evaluation for LLM Agents

Changyu Zeng, Hao Wu, Wei Xing, Xiaoyu Shen, Xinghao Chen, Yifan Ge, Yijuan Liang, Ziyi Wu

UniToolCall standardizes tool-use data and evaluation so that a fine-tuned 8B model reaches 93 percent precision on complex agent tasks.

arxiv:2604.11557 v2 · 2026-04-13 · cs.AI

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\usepackage{pith}
\pithnumber{L2P4S757ZPAEOW3TOZALVQZPZ6}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

fine-tuning Qwen3-8B on our dataset substantially improves tool-use performance. Under the distractor-heavy Hybrid-20 setting, achieves 93.0% single-turn Strict Precision, outperforming commercial models including GPT, Gemini, and Claude.

C2weakest assumption

That combining public datasets with structurally controlled synthetic trajectories and the Anchor Linkage mechanism produces training data that genuinely improves generalization to real tool-use scenarios without introducing artifacts or biases.

C3one line summary

UniToolCall unifies tool-use data and evaluation for LLM agents, enabling fine-tuned models to reach 93% single-turn precision on a challenging benchmark with distractors.

Receipt and verification

First computed	2026-05-26T02:04:10.595138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e9fc97fbfcbc0475b737640bac32fcfbbb2ef75e0bd05da7906d773599c3ca0

Aliases

arxiv: 2604.11557 · arxiv_version: 2604.11557v2 · doi: 10.48550/arxiv.2604.11557 · pith_short_12: L2P4S757ZPAE · pith_short_16: L2P4S757ZPAEOW3T · pith_short_8: L2P4S757

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/L2P4S757ZPAEOW3TOZALVQZPZ6 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 5e9fc97fbfcbc0475b737640bac32fcfbbb2ef75e0bd05da7906d773599c3ca0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdb4899a6ad5a029dc43705e8f54e1e0443fd297dc469d093840563cb429cde3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-04-13T14:43:47Z",
    "title_canon_sha256": "fc7bc9e123e9af5cce266bca01d6cab06e7991356d33c5761ba10d67419b0f9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.11557",
    "kind": "arxiv",
    "version": 2
  }
}