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license: mit
task_categories:
- other
language:
- en
tags:
- agents
- llm-agents
- tool-use
- appworld
- api-discovery
pretty_name: CEG — AppWorld Hidden-API Discovery Benchmark
---
# CEG — AppWorld Hidden-API Discovery Benchmark
Benchmark **specification** for the *hidden-API discovery* setting used in the CEG project
(**Observation-Verified Partial-Skill Memory for Training-Free LLM Agents**).
A set of advanced-feature APIs is **removed from the agent's documentation** (their existence,
signature, and docs are redacted) while they remain **executable**, forcing a *frozen* agent to
(i) **discover** each capability from its own observations and (ii) **use it reliably** to complete
multi-requirement [AppWorld](https://appworld.dev) tasks.
> This repo ships the **selection spec**, not raw task content. The actual AppWorld tasks come from
> the `appworld` Python package (`pip install appworld`); these files tell you *which tasks* to run
> and *which APIs to hide*.
## Contents
```
appworld_hidden_api/
config_13api/ # main paper set — 48 tasks, 13 hidden APIs
hidden_apis.json # {"hard": [ 13 fully-qualified API names to redact ]}
task_ids.json # [ 48 AppWorld task ids ] (16 templates × 3 variations)
task_meta.json # task_id -> {"split": ..., "gold_hidden": [APIs the gold solution calls]}
config_30api/ # larger variant — 75 tasks, 30 hidden APIs (same schema)
```
## How the sets were built (reward-free, no hardcoding)
1. **Pool** AppWorld tasks across `train`+`dev` splits.
2. Keep a task only if its **ground-truth solution genuinely calls one of the hidden APIs**
(recorded per task in `task_meta.json["gold_hidden"]`) — so discovery is *required*, not optional.
3. The hidden APIs are **non-basic "new-feature" actions** (e.g. `spotify.follow_artist`,
`spotify.add_to_queue`, `venmo.remind_payment_request`, `file_system.compress_directory`);
each app's authentication, reads (`show_/list_/search_`), and primary create/send/play actions
stay **visible**.
## Usage
```python
import json
hidden = json.load(open("appworld_hidden_api/config_13api/hidden_apis.json"))["hard"]
task_ids = json.load(open("appworld_hidden_api/config_13api/task_ids.json"))
# Run each task_id in AppWorld while redacting `hidden` from the API catalog
# (show_api_descriptions / show_api_doc / search_api_docs) but keeping them CALLABLE.
```
The 13-API config is the headline benchmark; official **Task Goal Completion (TGC)** is the metric.
## Citation
CEG — *Observation-Verified Partial-Skill Memory for Training-Free LLM Agents* (in progress).
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