How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Need help?

Contact us
Hiro

Hiro Smart Contracts API

Read-only endpoints to obtain Clarity smart contract details

Documentation Provider Profile APIs.io OpenAPI GitHub

Hiro Smart Contracts API is one of 26 APIs that Hiro publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Smart Contracts. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 14 operations across 14 paths, and defines 9 schemas. It is described by OpenAPI 3.2.0, at version 1.0.

Requests are made against 2 base URLs: https://api.hiro.so/, http://localhost:20443.

14 operations 14 paths 9 schemas 11 GET3 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0
Base URL
https://api.mainnet.hiro.so
Authentication
API Key
Resource Areas
1

Authentication & Security 1

Hiro Smart Contracts API declares 1 security scheme for authenticating requests. An API key is passed in the header as authorization (rpcAuth).

  • rpcAuth — Plain-text secret value that must exactly equal the node's configured password, which is set as connectionoptions.authtoken in the node's configuration file.

Paths & Operations 14

Across 14 paths, the API surfaces 14 operations — 11 GET, 3 POST. Each is listed below with its method, path, parameters, and response codes.

Smart Contracts 14

Read-only endpoints to obtain Clarity smart contract details

GET
/extended/v1/contract/by_trait
Get contracts by trait
get_contracts_by_trait 3 params → 2004XX
GET
/extended/v1/contract/{contract_id}
Get contract info
get_contract_by_id 1 param → 2004XX
GET
/extended/v1/contract/{contract_id}/events
Get contract events
get_contract_events_by_id 3 params → 2004XX
GET
/extended/v2/smart-contracts/status
Get smart contracts status
get_smart_contracts_status 1 param → 2004XX
GET
/v2/contracts/interface/{deployer_address}/{contract_name}
Get contract interface
getContractInterface 3 params → 200400404500
POST
/v2/map_entry/{deployer_address}/{contract_name}/{map_name}
Get specific data-map inside a contract
getContractDataMapEntry 5 params body → 200400404500
GET
/v2/contracts/source/{deployer_address}/{contract_name}
Get contract source
getContractSource 4 params → 200400404500
POST
/v2/contracts/call-read/{deployer_address}/{contract_name}/{function_name}
Call read-only function
callReadOnlyFunction 4 params body → 200400404500
POST
/v3/contracts/fast-call-read/{deployer_address}/{contract_name}/{function_name}
Call read-only function in fast mode (no cost and memory tracking)
fastCallReadOnlyFunction 4 params body → 200400401404408500
GET
/v2/traits/{deployer_address}/{contract_name}/{trait_deployer_address}/{trait_contract_name}/{trait_name}
Get trait implementation details
checkTraitImplementation 6 params → 200400404
GET
/v2/clarity/marf/{marf_key_hash}
Get the MARF value for a given key
getClarityMarfValue 3 params → 200400404
GET
/v2/clarity/metadata/{deployer_address}/{contract_name}/{clarity_metadata_key}
Get the contract metadata for the metadata key
getClarityMetadata 4 params → 200400404500
GET
/v2/constant_val/{deployer_address}/{contract_name}/{constant_name}
Get the value of a constant inside a contract
getConstantValue 4 params → 200400404500
GET
/v2/data_var/{principal}/{contract_name}/{var_name}
Get contract data variable
getContractDataVariable 5 params → 200400404

Schemas 9

The contract defines 9 schemas that model the data the API accepts and returns. Each schema is shown below with its type and property counts.

ClarityMetadata
ClarityName
ContractInterface
ContractSource
ReadOnlyFunctionResult
ReadOnlyFunctionArgs
ClarityData
ConstantValue
IsTraitImplemented

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

hiro-smart-contracts-api-openapi.yml Raw ↑

Other APIs Hiro publishes across the network.

Hiro Chainhooks API
AE Profile APIs.io
Hiro Platform API
AE Profile APIs.io
Hiro Accounts API
AE Profile APIs.io
Hiro Atlas API
AE Profile APIs.io
Hiro Blocks API
AE Profile APIs.io
Hiro Blocks Proposals API
AE Profile APIs.io
Hiro Burn Blocks API
AE Profile APIs.io
Hiro Faucets API
AE Profile APIs.io
Hiro Fees API
AE Profile APIs.io
Hiro Fungible Tokens API
AE Profile APIs.io
Hiro Info API
AE Profile APIs.io
Hiro Mempool API
AE Profile APIs.io
#Smart Contracts
← Back to H APIs
API Details
ID
hiro:hiro-smart-contracts-api
Base URL
https://api.mainnet.hiro.so
Docs
https://docs.hiro.so/stacks/api
Provider
Hiro
APIs.io →  GitHub →
Explore more
All APIs Providers APIs.io Network
Work with this as data

Every API here is available over the API and to AI agents over MCP. APIs is not yet its own endpoint on the v1 API. Reach this content through network search and the tag graph, or the MCP server below.

Installs https://mcp.apievangelist.com/mcp in Claude, Cursor, VS Code and the rest — one button, every client.

MCP tools for apis
4 tools reach this content
  • search_api_evangelistSearch every content type across the network at once.
  • find_relatedThe shared-tag relevance graph — what else covers this.
  • get_tagEverything one tag labels, across all content types.
  • guide_topicPRO — a curated bundle for a topic: area, guidance, rules, papers, stories, services.
All tools & prompts
Call it yourself
curl for this page
Search the network for this 
curl "https://api.apievangelist.com/v1/search?q=hiro-smart-contracts-api&limit=10"
Everything under a tag 
curl "https://api.apievangelist.com/v1/tags/hiro-smart-contracts-api"

Discovery needs no key. Full bodies and the synthesis endpoints are Pro.

Get an API key

Free tier, no email required. Sign in with whichever identity you already have.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have. Your account

Where this information came from

This is an independent, third-party profile of Hiro Smart Contracts API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.