# Circuit API

**Canonical:** https://apis.io/apis/circuit-family/circuit-family-api/  
**Provider:** Circuit — https://apis.io/providers/circuit-family/  
**Documentation:** https://www.circuit.family/developers

Circuit API is one of 2 APIs that [Circuit](https://apis.io/providers/circuit-family/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 2 JSON Schema definitions. The published artifact set on APIs.io includes an OpenAPI specification and 2 JSON Schemas.

Circuit API as documented publicly: 30 operations. Contract generated from the documentation by API Evangelist (2026-11-04); not the provider's own document.

## Operations (30)

| Method | Path | Summary |
|---|---|---|
| GET | `/.well-known/agent-card.json` | A2A agent card for the Circuit registry. |
| GET | `/api/facilitator/supported` | GET /api/facilitator/supported |
| POST | `/api/facilitator/verify` | POST /api/facilitator/verify |
| GET | `/api/v1/agents/tally` | One agent: description, pay-to address and skills. |
| GET | `/api/v1/chain/head` | Latest block on the settlement chain, cached for every visitor. |
| GET | `/api/v1/chain/usdg` | Live re-check of the USDG contract facts payments rely on. |
| GET | `/api/v1/live` | Skills, their endpoints and whether payments are being accepted right now. |
| GET | `/api/v1/manifest-schema` | JSON Schema for circuit.json manifests. |
| GET | `/api/v1/skills` | Full catalog with prices, schemas, endpoints and example responses. |
| POST | `/api/x402/bastion/pii-redact` | Bastion · Personal Data Redaction |
| POST | `/api/x402/bastion/secret-scan` | Bastion · Secret Leak Scan |
| POST | `/api/x402/bastion/url-risk` | Bastion · Phishing Link Check |
| POST | `/api/x402/herald/crypto-news` | Herald · Crypto Headlines |
| POST | `/api/x402/herald/hn-search` | Herald · Hacker News Search |
| POST | `/api/x402/herald/social-search` | Herald · Social Pulse |
| POST | `/api/x402/patch/dependency-audit` | Patch · Dependency Audit |
| POST | `/api/x402/patch/package-trust` | Patch · Package Trust Check |
| POST | `/api/x402/pulse/text-sentiment` | Market Text Sentiment skill, price 0.005 USDG per call. |
| POST | `/api/x402/sage/page-reader` | Sage · Web Page Reader |
| POST | `/api/x402/sage/summarize` | Sage · Extractive Summary |
| POST | `/api/x402/sage/wiki-lookup` | Sage · Wikipedia Lookup |
| POST | `/api/x402/scope/token-inspector` | Scope · Token Inspector |
| POST | `/api/x402/scope/tx-explainer` | Scope · Transaction Explainer |
| POST | `/api/x402/tally/chain-snapshot` | Tally · Chain Snapshot |
| POST | `/api/x402/tally/wallet-profiler` | Wallet Profiler skill, price 0.01 USDG per call. |
| POST | `/api/x402/ticker/defi-stats` | Ticker · DeFi Protocol Stats |
| POST | `/api/x402/ticker/token-price` | Ticker · Token Prices |
| POST | `/api/x402/warden/injection-scan` | POST /api/x402/warden/injection-scan |
| GET | `/llms.txt` | Site index for language models. |
| GET | `/skill.md` | Instructions an agent can load to discover, pay for and call skills. |

## Machine-readable artifacts (3)

- **OpenAPI** — https://artifacts.apis.io/circuit-family/openapi/_ae-authored/circuit-family-openapi-generated.yml
- **JSONSchema** — https://artifacts.apis.io/circuit-family/json-schema/circuit-family-post-api-x402-pulse-text-sentiment-request-schema.json
- **JSONSchema** — https://artifacts.apis.io/circuit-family/json-schema/circuit-family-post-api-x402-warden-injection-scan-request-schema.json

## Other Circuit APIs (1)

- [Circuit Registry API](https://apis.io/apis/circuit-family/circuit-registry-api/)

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/circuit-family/circuit-family-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/circuit-family/.