# Agent Zero ERC-8004 Agent Intelligence API **Canonical:** https://apis.io/apis/onchainagentintel-io/agent-zero-erc-8004-agent-intelligence-api/ **Provider:** Agent Zero — https://apis.io/providers/onchainagentintel-io/ **Base URL:** https://api.onchainagentintel.io **Documentation:** https://onchainagentintel.io/docs Agent Zero ERC-8004 Agent Intelligence API is one of 3 APIs that [Agent Zero](https://apis.io/providers/onchainagentintel-io/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Agents, Agent Intelligence, ERC-8004, x402, and Smart Contracts. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, a getting-started guide, authentication docs, and a changelog. REST API for ERC-8004 agent intelligence on Base and Ethereum. Free public operations (coverage stats, leaderboards, per-agent objective signals, capability and chain roll-ups, citable datasets, an embeddable readiness badge, and the discovery documents) answer without payment; the paid x402 operations — agent profile, capability search, trending, peers, market map, ecosystem delta, full payment graph, a 30-day flat-rate subscription, Solidity security audit and ERC-8183 evaluation — return HTTP 402 with a free counts-only preview and settle in USDC (EIP-3009 X-PAYMENT) or native ETH. 25 operations, OpenAPI 3.1.0 published at https://api.onchainagentintel.io/v1/public/openapi.json with servers[] https://api.onchainagentintel.io; Redoc at /v1/public/docs. ## Operations (25) | Method | Path | Summary | |---|---|---| | GET | `/v1/public/stats` | Aggregate ecosystem stats (counts only, no PII). | | GET | `/v1/public/leaderboards` | Free leaderboards (top MCP / OpenAPI / most-recent). | | GET | `/v1/public/agent/{chain}/{agent_id}` | Free counts-only detail for one agent. | | GET | `/v1/public/capability/{slug}` | Stamped-readiness agents matching a capability slug. | | GET | `/v1/public/chain/{chain}` | Stamped-readiness agents on a chain (base\|ethereum). | | GET | `/v1/public/badge/{chain}/{agent_id}.svg` | Embeddable ERC-8004 verification badge (SVG). | | GET | `/v1/public/datasets` | Machine-readable index of every citable dataset we publish (CC BY 4.0) — finding, method, live figures + denominators, scope caveats, citation, and a pointer... | | GET | `/v1/public/datasets/{slug}` | One citable dataset descriptor by slug (commerce-backed\|chain-liveness\|signpost-gap\|x402-bazaar). | | GET | `/v1/public/openapi.json` | Curated OpenAPI 3.1 spec (public + paid endpoints). | | GET | `/v1/public/docs` | Human-readable API docs (Redoc renders the OpenAPI spec). | | GET | `/agent.json` | Agent Zero's ERC-8004 tokenURI manifest (JSON). | | GET | `/.well-known/agent-card.json` | A2A/ERC-8004 AgentCard (well-known path). | | GET | `/.well-known/agents.json` | Plural A2A/ERC-8004 multi-agent manifest — array form enumerated by agent directories. | | POST | `/mcp` | Free MCP server (4 read-only tools + x402 upsell). | | GET | `/.well-known/x402.json` | x402 v2 payment-discovery manifest — every paid endpoint's accepts[], pricing, networks, and Safe payTo (served on the api host and mirrored at the apex). | | GET | `/v1/intel/agent/{agent_id}` | Agent Intelligence — Profile Lookup | | POST | `/v1/intel/search` | Agent Intelligence — Capability Search | | GET | `/v1/intel/trending` | Agent Intelligence — Trending & Market Activity | | GET | `/v1/intel/peers/{agent_id}` | Agent Intelligence — Peer Similarity | | GET | `/v1/intel/market` | Agent Intelligence — Capability Market Map | | GET | `/v1/intel/delta` | Agent Intelligence — Ecosystem Delta | | GET | `/v1/intel/graph` | Agent Intelligence — Full Payment Graph | | POST | `/v1/intel/subscribe` | Agent Intelligence — 30-Day Flat-Rate Subscription | | POST | `/v1/audit` | Smart Contract Security Audit | | POST | `/v1/evaluate` | ERC-8183 Deliverable Evaluation | ## Machine-readable artifacts (20) - **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/openapi/onchainagentintel-io-openapi.yml - **OpenAPI** — https://api.onchainagentintel.io/v1/public/openapi.json - **Documentation** — https://onchainagentintel.io/docs - **APIReference** — https://api.onchainagentintel.io/v1/public/docs - **GettingStarted** — https://onchainagentintel.io/docs#quickstart - **Overlay** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/overlays/onchainagentintel-io-openapi-overlay.yaml - **Authentication** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/authentication/onchainagentintel-io-authentication.yml - **Conventions** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/conventions/onchainagentintel-io-conventions.yml - **Idempotency** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/conventions/onchainagentintel-io-conventions.yml - **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/errors/onchainagentintel-io-problem-types.yml - **Lifecycle** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/lifecycle/onchainagentintel-io-lifecycle.yml - **ChangeLog** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/changelog/onchainagentintel-io-changelog.yml - **Conformance** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/conformance/onchainagentintel-io-conformance.yml - **DataModel** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/data-model/onchainagentintel-io-data-model.yml - **Components** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/components/onchainagentintel-io-components.yml - **Plans** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/plans/onchainagentintel-io-plans-pricing.yml - **RateLimits** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/rate-limits/onchainagentintel-io-rate-limits.yml - **AgentSkill** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/skills/_index.yml - **AgentSkill** — https://onchainagentintel.io/.agents/skills/onchain-agent-intel/SKILL.md - **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/onchainagentintel-io/refs/heads/main/apis.yml ## Other Agent Zero APIs (2) - [Agent Zero MCP Server](https://apis.io/apis/onchainagentintel-io/agent-zero-mcp-server/) - [Agent Zero A2A Agent](https://apis.io/apis/onchainagentintel-io/agent-zero-a2a-agent/) ## Tags Agents, Agent Intelligence, ERC-8004, x402, Smart Contracts --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/onchainagentintel-io/agent-zero-erc-8004-agent-intelligence-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/onchainagentintel-io/.