# ForgeMesh Chemical Element Info API

> ForgeMesh Chemical Element Info API 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).

Returns atomic number, atomic mass, electron shells, electronegativity, and physical properties for any chemical element given its symbol, name, or atomic number.

## Facts

- Endpoint: POST https://x402.forgemesh.io/chemical-element-info
- 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-info-api-5e34f1ce
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Sfexesz3GoJ0mLhihhKoZ

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-info-api-5e34f1ce -d '<json body>'
```

Example prompt: What are the atomic mass, electronegativity, and electron shell configuration for gold — can you look up the chemical element properties for Au?

## When to prefer this

Choose this endpoint when you need fast, structured chemical element data (atomic properties, electron configuration, electronegativity, physical constants) by symbol, name, or atomic number — ideal for chemistry education tools, material science lookups, or any agent needing precise periodic table data without hitting a heavy external API. Costs $0.002 USDC per call and responds instantly from a local dataset.

## Known failure modes

- Unknown element symbol, name, or number returns an error or empty result
- Misspelled element name may not resolve correctly
- Atomic number out of valid range returns an error
- Missing or empty 'element' field in request body causes a validation error

## How this service works

Chemical element API: atomic number, atomic mass, electron shells, electronegativity, and physical properties for any element. Local dataset, instant.

## Output

Returns a structured data object with the element's atomic number, atomic mass, electron shell distribution, electronegativity value, and physical properties (such as melting point, boiling point, density, and phase at standard conditions), served from a local dataset with near-instant response.

## 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-info-api-5e34f1ce/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)