# ForgeMesh Chemical Element Lookup

> ForgeMesh Chemical Element Lookup is a paid API for AI agents from x402.forgemesh.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).

Looks up detailed physical and chemical properties for any of the 118 known elements by atomic number, symbol, or name.

## Facts

- Endpoint: POST https://x402.forgemesh.io/atomic-number-lookup
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/forgemesh-chemical-element-lookup-e4fa1d5b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cveqByVVc1BKxggAJIS8Z

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 forgemesh-chemical-element-lookup-e4fa1d5b -d '<json body>'
```

Example prompt: What are the atomic mass, electron configuration, electronegativity, melting point, and boiling point of tungsten — can you look that up for me?

## When to prefer this

Use this endpoint when you need fast, structured, sourced physical and chemical properties for a specific element — ideal for chemistry homework assistance, lab preparation, materials science research, or any agent needing a reliable periodic table reference without scraping Wikipedia.

## Known failure modes

- Element not found if input string doesn't match any known symbol, name, or atomic number
- Invalid atomic number (outside 1–118) returns an error
- Ambiguous input (e.g. partial names) may fail to match
- Network timeout or service unavailability returns a 5xx error
- Payment failure via x402 protocol returns 402 Payment Required

## How this service works

Chemical element reference: look up any of the 118 known elements by atomic number, symbol, or name and get atomic mass, electron configuration, electronegativity, melting/boiling points, density, and phase at room temperature. For chemistry homework, materials science, and lab-prep agents needing a quick, sourced fact check.

## Output

Returns detailed elemental data including atomic mass, electron configuration, electronegativity, melting point, boiling point, density, and phase at room temperature for the requested element.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "element": {
   "type": "string",
   "description": "symbol, name, or atomic number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "name": "Iron",
  "symbol": "Fe",
  "category": "transition metal",
  "atomic_mass": 55.845,
  "atomic_number": 26,
  "melting_point_k": 1811.15
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/forgemesh-chemical-element-lookup-e4fa1d5b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.forgemesh.io](https://www.zero.xyz/host/x402.forgemesh.io/llms.txt)