Pith Number

pith:5BYYCEVR

pith:2026:5BYYCEVRQIHBSBZDA43JR5Z7SG

not attested not anchored not stored refs pending

Do Agents Know What They Can't Do? Evaluating Feasibility Awareness in Tool-Using Agents

Jiuming Jiang, Liang Cheng, Luo Mai, Mingsheng Cai

arxiv:2605.28532 v1 · 2026-05-27 · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5BYYCEVRQIHBSBZDA43JR5Z7SG}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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.

Receipt and verification

First computed	2026-05-28T02:04:55.610634Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8718112b1820e190723073698f73f91adf16ab2f015f25a4f19289ddc60ec86

Aliases

arxiv: 2605.28532 · arxiv_version: 2605.28532v1 · doi: 10.48550/arxiv.2605.28532 · pith_short_12: 5BYYCEVRQIHB · pith_short_16: 5BYYCEVRQIHBSBZD · pith_short_8: 5BYYCEVR

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/5BYYCEVRQIHBSBZDA43JR5Z7SG \
  | 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: e8718112b1820e190723073698f73f91adf16ab2f015f25a4f19289ddc60ec86

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f503e9edc561cbbbb7076c7f4369b9af0c5471a8f0631aa8170ca443e30518d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-05-27T14:25:51Z",
    "title_canon_sha256": "c381d1d4756025cc33330cff4c6abe67fa6c7243c576c119e4e961b5e48c3eec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28532",
    "kind": "arxiv",
    "version": 1
  }
}