Succinct

Succinct is an applied cryptography company building zero-knowledge proof infrastructure. Its flagship product is SP1, an open-source zkVM that proves the correct execution of RISC-V programs, and the Succinct Prover Network (SPN), a decentralized on-chain marketplace on Ethereum that coordinates a distributed network of provers to generate ZK proofs for any piece of software, settled with the PROVE token. Succinct's programmatic surface is a gRPC/protobuf API (the ProverNetwork, ArtifactStore, and Verifier services) rather than REST/OpenAPI; developers integrate in Rust via the SP1 SDK and CLI (cargo prove / sp1up) and authenticate to the network with a Secp256k1 key pair. Backed by Paradigm.

Succinct is profiled on the APIs.io network. Tagged areas include Company, Crypto Infrastructure, Zero-Knowledge Proofs, zkVM, and Blockchain.

Succinct’s developer surface includes documentation, API reference, getting-started guide, engineering blog, pricing, changelog, CLI, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

33.2/100 thin ▬ flat Agent 16/100 agent aware Front door AI 4/6 moderate Heartbeat 92/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

0 APIs

Company Crypto Infrastructure Zero-Knowledge ProofszkVMBlockchain Ethereum Cryptography Developer ToolsProver NetworkgRPC

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 33.2/100 · thin

Contract Quality 5.1 / 21

Developer Ergonomics 11.3 / 17

Access Clarity 1.8 / 17

Operational Transparency 4.7 / 11

Contract Governance 0.5 / 10

Discoverability 4.7 / 9

Regulatory Posture 2.5 / 15

Agent readiness — 16/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

11 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 24.0 — up to +19.0 composite points
Access Clarity scores 10.5 — up to +17.9 composite points
Contract Governance scores 4.5 — up to +11.5 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/succinct/apis.yml: open an issue on github.com/api-evangelist/succinct to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Buf Schema Registry (public Protocol Buffers modules, gRPC / ConnectRPC schema publishers)	distribution	9.6 (thin)	-	1

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

gRPC

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Succinct Authentication

signature · 2 schemes

SECURITY

Succinct Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Conformance

Conformance

Conventions

Conventions

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

StatusPage

StatusPage

Deprecation

Deprecation

ChangeLog

ChangeLog

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 3

The organization behind the API

BlogRSS

BlogRSS

Website

Website

Blog

Blog

Other 4

Properties that don't map to a standard resource type

Protobuf

Protobuf

Protobuf

Protobuf

Source (apis.yml)

aid: succinct
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/succinct.png
name: Succinct
description: Succinct is an applied cryptography company building zero-knowledge proof infrastructure. Its flagship product
  is SP1, an open-source zkVM that proves the correct execution of RISC-V programs, and the Succinct Prover Network (SPN),
  a decentralized on-chain marketplace on Ethereum that coordinates a distributed network of provers to generate ZK proofs
  for any piece of software, settled with the PROVE token. Succinct's programmatic surface is a gRPC/protobuf API (the ProverNetwork,
  ArtifactStore, and Verifier services) rather than REST/OpenAPI; developers integrate in Rust via the SP1 SDK and CLI (cargo
  prove / sp1up) and authenticate to the network with a Secp256k1 key pair. Backed by Paradigm.
url: https://raw.githubusercontent.com/api-evangelist/succinct/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- paradigm
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
x-docs-platform: docusaurus
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-17
tags:
- Company
- Crypto Infrastructure
- Zero-Knowledge Proofs
- zkVM
- Blockchain
- Ethereum
- Cryptography
- Developer Tools
- Prover Network
- gRPC
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- url: https://blog.succinct.xyz/rss/
  type: BlogRSS
- type: Website
  url: https://succinct.xyz
- type: DeveloperPortal
  url: https://docs.succinct.xyz
- type: Documentation
  url: https://docs.succinct.xyz
- type: APIReference
  url: https://docs.succinct.xyz/docs/provers/building-a-prover/api
- type: GettingStarted
  url: https://docs.succinct.xyz/docs/sp1/getting-started/quickstart
- type: Blog
  url: https://blog.succinct.xyz
- type: GitHubOrganization
  url: https://github.com/succinctlabs
- type: Pricing
  url: https://docs.succinct.xyz/docs/protocol/prove/pay
- type: StatusPage
  url: https://status.succinct.xyz
- type: Deprecation
  url: https://docs.succinct.xyz/docs/sp1/developers/upgrades
- type: Lifecycle
  url: lifecycle/succinct-lifecycle.yml
- type: ChangeLog
  url: changelog/succinct-changelog.yml
- type: Packages
  url: packages/succinct-packages.yml
- type: SDKs
  url: packages/succinct-packages.yml
- type: CLI
  url: cli/succinct-cli.yml
- type: Authentication
  url: authentication/succinct-authentication.yml
- type: Conformance
  url: conformance/succinct-conformance.yml
- type: Conventions
  url: conventions/succinct-conventions.yml
- type: LLMsTxt
  url: llms/succinct-llms.txt
- type: DomainSecurity
  url: security/succinct-domain-security.yml
- type: Protobuf
  name: Succinct Prover Network (ProverNetwork gRPC service)
  url: grpc/succinct-network.proto
- type: Protobuf
  name: Succinct ArtifactStore gRPC service
  url: grpc/succinct-artifact.proto
- type: Protobuf
  name: Succinct Verifier gRPC service
  url: grpc/succinct-verifier.proto
- type: Protobuf
  name: Succinct Prover Network shared types
  url: grpc/succinct-types.proto
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 13
  pass: local-v1

Succinct API — frequently asked questions

How do I authenticate with the Succinct API?

Succinct uses bearer-token authentication (signature · 2 schemes). The details are profiled on APIs.io as Succinct Authentication.

Is the Succinct API ready for AI agents?

Succinct has a Kin Score of 33.2 out of 100 (thin) and an Agent Readiness score of 15.5 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

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MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

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get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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