# OpenAlex Concepts Search

> OpenAlex Concepts Search is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Searches OpenAlex academic research concepts by keyword, returning concept names and their hierarchy levels in the knowledge taxonomy.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/openalex-concepts
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/openalex-concepts-search-2754d577
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KVKQTEgJofo0M_S9gIHGp

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability openalex-concepts-search-2754d577 -d '<json body>'
```

Example prompt: Search OpenAlex research concepts for 'neural networks' and tell me the concept names and where they sit in the academic hierarchy.

## When to prefer this

Use this endpoint when you need to explore or validate academic/research concept terminology using the OpenAlex taxonomy, especially when you need to understand the hierarchical level of a concept within the scholarly knowledge graph. Prefer this over general web search when you want structured concept metadata tied to the OpenAlex research graph.

## Known failure modes

- Empty or missing q parameter returns no results or error
- Query with no matching concepts returns empty result set
- Service unavailable returns HTTP error
- Payment not processed results in 402 Payment Required

## How this service works

Searches OpenAlex research concepts for q, returning concept names and hierarchy levels. Query: ?q= Returns JSON.

## Output

Returns a JSON array of OpenAlex research concepts matching the query, each with a concept name and its hierarchy level (depth) within the OpenAlex knowledge taxonomy.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/openalex-concepts-search-2754d577/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)