# 2s Inflation Expectations API

> 2s Inflation Expectations API is a paid API for AI agents from 2s.io, paid per call via x402, $0.0012/call, status unknown (last checked 2026-09-13).

Returns current market-based inflation expectation rates (breakeven and forward rates) sourced from FRED Federal Reserve data

## Facts

- Endpoint: GET https://2s.io/api/inflation/expectations
- Price: $0.0012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/2s-inflation-expectations-api-017068ef
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6zN6dbHD1BZNLGoBYqlmX

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 2s-inflation-expectations-api-017068ef
```

Example prompt: What are the latest market-based inflation expectations right now — give me the 5-year breakeven and the 5-year 5-year forward rates from the Fed's FRED data?

## When to prefer this

Choose this endpoint when you need current, authoritative market-based inflation expectations (breakeven rates, forward rates) derived from TIPS spreads and published by the Federal Reserve. Prefer over general financial APIs when you specifically need FRED-sourced, bond-market-implied inflation data with no signup or API key required.

## Known failure modes

- Payment not received or invalid USDC payment returns 402
- FRED upstream data unavailable returns error with ok:false
- Rate limiting or service outage returns 5xx error
- Stale data if FRED has not published recent figures

## How this service works

The (most) everything API: 575+ pay-per-call endpoints for AI agents — ground-truth data, a full AI gateway, and agent infrastructure (storage, queues, watchers). USDC via x402, no signup, no API keys, and upto billing: pay actual usage, not the quote.

## Output

A JSON array of inflation expectation series, each with an as-of date, the rate value (e.g. 2.39%), a human-readable label (e.g. '5-Year breakeven inflation rate (TIPS)'), a measure identifier (e.g. '5y-breakeven'), and a FRED series ID (e.g. 'T5YIE'). Also includes total count and source attribution to FRED/Federal Reserve Bank of St. Louis.

## Example request

```json
{
 "properties": "5y_breakeven,5y5y_forward"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/2s-inflation-expectations-api-017068ef/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 2s.io](https://www.zero.xyz/host/2s.io/llms.txt)