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Governance APIs

Governance Discovery pages matter when a team needs more than generic chain access and instead needs proposal, referendum, vote, delegation, or treasury visibility as an application feature. Readers here are usually evaluating how quickly they can get reliable governance state into alerts, dashboards, or product workflows

Claim-safe statuses distinguish Provider Profiles, evaluation-only pages, requested integrations, and available gateway/tooling surfaces without exposing paid procurement, approval, or provider-fetching flows

At a glance

Category summary

Primary public prompt
Governance API
Definition
Proposal, referendum, vote, and delegation data sources for governance workflows.
Sources
6
Capabilities
6
Chain hubs
3
Use-case groups
10
Last verified
PubFi status
Discovery comparison and request-routing surface; individual source pages carry claim-safe integration status.

Official-source citations

Subscan API Primary query
subscan api Source
Subscan API Primary coverage
Substrate accounts, extrinsics, governance, staking, and asset data Source
Subscan API Discovery category
On-chain state and governance Source
Subscan API Auth model
API-key authentication is required for live Subscan API use Source
Subscan API Commercial fact
Free API access is documented with one API key and a 5 req/sec limit; paid-plan pricing is not public in the support article Source
Subscan API PubFi status
PubFi gateway route documentation exists for Subscan; upstream account, auth, and route limits still apply Source
DotLake API Primary query
dotlake api Source
DotLake API Primary coverage
Polkadot, Kusama, Westend, Paseo, parachain, and solo Substrate ecosystem metrics Source
DotLake API Endpoint families
OpenAPI lists account, contract, coretime, governance, reliability, revenue, staking, summary, transaction, treasury, validator, and XCM metrics. Source
DotLake API Auth model
All endpoints require a DotLake API key used as a Bearer token after wallet-based registration. Source
DotLake API Freshness note
The Polkadot forum announcement describes daily updates for the API data coverage. Source
DotLake API Commercial fact
No public price, quota, or rate-limit schedule is listed in the OpenAPI description; users must sign in with a Polkadot wallet to obtain an API key. Source
DotLake API PubFi status
PubFi Discovery tracks DotLake API as a public source profile; PubFi does not expose a production DotLake gateway route in the current gateway readiness catalog. Source
Polkassembly Primary coverage
Governance discussions, proposals, referenda, and vote context for Polkadot and Kusama communities Source
Polkassembly Fixture coverage
Governance coverage for the Polkadot fixture target Source
Chaingpt API Public docs evidence
Chaingpt has public API or documentation evidence available from public sources. Source
Chaingpt API PubFi gateway status
Automation-built Provider Profile; PubFi gateway support is not certified.
Gitbook API Public docs evidence
Gitbook has public API or documentation evidence available from public sources. Source
Gitbook API PubFi gateway status
Automation-built Provider Profile; PubFi gateway support is not certified.
Snapshot API Public docs evidence
Snapshot has public API or documentation evidence available from public sources. Source
Snapshot API PubFi gateway status
Automation-built Provider Profile; PubFi gateway support is not certified.

Editorial overview

The governance category is narrower than broad on-chain-state coverage, but it is more decision-sensitive because freshness, completeness, and ecosystem-specific modeling all matter. In the current seed catalog, the main distinction is often between explorer-style indexed governance reads, governance-specific workflow tooling, and official aggregated governance metrics such as DotLake's OpenGov referendum and participation endpoints.

Start here recommendations

Subscan API

Why start here
A strong first stop when the team wants indexed Polkadot governance reads alongside broader Substrate account and staking visibility.
Best for
Teams starting with explorer-style governance data

Polkassembly

Why start here
Useful when the workflow is centered on governance participation, proposal tracking, and governance-specific context rather than generic chain data access.
Best for
Teams focused on governance workflows

DotLake API

Why start here
Use when the team needs official aggregated OpenGov participation or referendum-result metrics rather than governance discussion workflows.
Best for
Official aggregated governance metrics

Decision criteria and landscape gaps

Evaluation criteria

  • Whether proposal, referendum, vote, and delegation data are complete enough for the target governance workflow
  • How fresh governance state appears relative to the cadence the application needs
  • Whether the product surfaces governance as a first-class workflow or only as a subset of broader chain data

Provider landscape gaps

  • Governance data products often make coverage visible faster than they make completeness and freshness limits visible.
  • It is still easy to confuse broad on-chain-state coverage with governance-specific workflow support even when the buyer actually needs the latter.

Best by use case

Add referendum context to community or agent workflows

Polkassembly

Build Polkadot ecosystem health dashboards from daily and monthly metrics

DotLake API

Compare Chaingpt API evidence before runtime integration work

Chaingpt API

Compare Gitbook API evidence before runtime integration work

Gitbook API

Compare official aggregated metrics against explorer-style or custom-indexing sources

DotLake API

Compare Snapshot API evidence before runtime integration work

Snapshot API

Read governance and staking state for Polkadot ecosystem apps

Subscan API

Track account activity across Substrate chains

Subscan API

Track governance proposals for Polkadot ecosystem research

Polkassembly

Track OpenGov, treasury, staking, and validator metrics without running a custom indexer

DotLake API

Entries in this category

Coming soonNeeds re-verification

Explorer and indexed Substrate chain API for accounts, extrinsics, governance, staking, and asset data

Provider
Subscan
Page status
Indexable
Agent availability
Needs re-verification
Primary category
Onchain Analytics
Primary chain
Polkadot
On-chain statePolkadot
Indexed onlyProvider Profile

Official Polkadot, Kusama, and Substrate REST API for pre-aggregated ecosystem metrics

Provider
Parity Data
Page status
Indexable
Agent availability
Provider Profile
Primary category
Onchain Analytics
Primary chain
Polkadot
On-chain statePolkadot
AvailableProvider Profile

Governance discussion, proposal, referendum, and vote context for Polkadot and Kusama communities

Provider
Polkassembly
Page status
Indexable
Agent availability
Provider Profile
Primary category
Governance
Primary chain
Polkadot
Polkadot
Coming soonProvider Profile

Chaingpt API is an automation-built public Provider Profile for Chaingpt public API resources. Discovery has public docs evidence, but PubFi does not certify gateway runtime support for this provider

Provider
Chaingpt
Page status
Indexable
Agent availability
Provider Profile
Primary category
Governance
Primary chain
Multichain
Multichain
Coming soonProvider Profile

Gitbook API is an automation-built public Provider Profile for Gitbook public API resources. Discovery has public docs evidence, but PubFi does not certify gateway runtime support for this provider

Provider
Gitbook
Page status
Indexable
Agent availability
Provider Profile
Primary category
Governance
Primary chain
Multichain
Multichain
Coming soonProvider Profile

Snapshot API is an automation-built public Provider Profile for Snapshot: GraphQL API. Discovery has public docs evidence, but PubFi does not certify gateway runtime support for this provider

Provider
Snapshot
Page status
Indexable
Agent availability
Provider Profile
Primary category
Governance
Primary chain
Ethereum
On-chain analyticsEthereum

Category coverage

Subscan API governance coverage

Requested
Source
subscan
Auth
Api Key
Procurement
Free Requires Auth
Coverage
polkadot
Polkadot
governance_recordchain_slug, proposal_id, status, captured_at

DotLake API governance metrics coverage

Requested
Auth
Api Key
Procurement
Free Requires Auth
Coverage
polkadot, kusama, substrate
Polkadot
governance_metric_timeseriesrelay_chain, metric_name, period, value, captured_at

Polkassembly governance coverage

Available
Auth
None
Procurement
Public No Approval
Coverage
polkadot
Polkadot
governance_recordchain_slug, proposal_id, status, captured_at

Chaingpt API governance evidence

Requested
Source
chaingpt
Auth
Api Key
Procurement
Not Procurable
Coverage
multichain
Multichain
governance_recordproposal_or_referendum, status, captured_at

Gitbook API governance evidence

Requested
Source
gitbook
Auth
Api Key
Procurement
Not Procurable
Coverage
multichain
Multichain
governance_recordproposal_or_referendum, status, captured_at

Snapshot API governance evidence

Requested
Source
snapshot
Auth
Api Key
Procurement
Not Procurable
Coverage
ethereum
Ethereum
governance_recordproposal_or_referendum, status, captured_at