Buftechnologies

Buf Technologies provides modern tools for working with Protocol Buffers and gRPC, including the Buf Schema Registry, Buf CLI, and Connect RPC. Their platform enables developers to generate SDKs, create API documentation, enforce policy checks, and manage plugins, streamlining protobuf development and governance across languages and services.

Buftechnologies is listed with 3 APIs on the APIs.io network, including Connectrpc API, Foo API, and 1 more. Tagged areas include Company, Protobuf, gRPC, and Developer Tools.

The Buftechnologies catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Buftechnologies’ developer surface includes CLI, changelog, documentation, API reference, getting-started guide, support, engineering blog, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

36.9/100 thin ▬ flat Agent 30/100 agent ready Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

3 APIs

Company Protobuf gRPC Developer Tools

Kin Score

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

Composite quality — 36.9/100 · thin

Contract Quality 3.3 / 19

Developer Ergonomics 5.2 / 15

Access Clarity 11.6 / 15

Operational Transparency 1.0 / 10

Contract Governance 2.0 / 9

Discoverability 4.0 / 8

Regulatory Posture 3.7 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 30/100 · agent ready

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 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 6 / 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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)

9 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 17.8 — up to +20.6 composite points
Developer Ergonomics scores 34.5 — up to +13.1 composite points
Operational Transparency scores 10.5 — up to +11.6 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/buftechnologies/apis.yml: open an issue on github.com/api-evangelist/buftechnologies 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 →

Standards implemented 3

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

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

Buf API

Buf provides a Schema Registry API and Connect RPC services, but no public OpenAPI spec is available.

Buftechnologies Connectrpc API

The Connectrpc API from Buftechnologies — 2 operation(s) for connectrpc.

Buftechnologies Foo API

The Foo API from Buftechnologies — 1 operation(s) for foo.

Buftechnologies API pricing

Prices published by Buftechnologies, read 2026-10-06 from buf.build/pricing. A free plan or tier is listed.

Plan	Price
Community	Free
Teams	$0.50 per type/ month
Pro	$5 per type/ month*
Enterprise	Contact sales

Plan details, limits and sources →

Billed by: subscription · FinOps profile →

Pricing Plans 1

Published pricing tiers and plan structures.

Buftechnologies Plans Pricing

4 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Buftechnologies

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Buftechnologies Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Buftechnologies Context

1 classes · 1 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Buftechnologies API Rules

10 rules · 8 errors 1 warnings 1 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

PostConnectrpcElizaV1ElizaserviceConnectrpcelizav1Elizaservi

1 properties

JSON SCHEMA

Security Posture 1

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

Buftechnologies Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

CLI

CLI

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: buftechnologies
name: Buftechnologies
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  probe_state: unreadable
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://buf.build/images/buf-og-image-v1.png
description: Buf Technologies provides modern tools for working with Protocol Buffers and gRPC, including the Buf Schema Registry,
  Buf CLI, and Connect RPC. Their platform enables developers to generate SDKs, create API documentation, enforce policy checks,
  and manage plugins, streamlining protobuf development and governance across languages and services.
url: https://raw.githubusercontent.com/api-evangelist/buftechnologies/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-06 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-06'
modified: '2026-10-06'
tags:
- Company
- Protobuf
- gRPC
- Developer Tools
tags_raw:
- Company
- API
- Protobuf
- gRPC
- DeveloperTools
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/buftechnologies-plans-pricing.yml
- type: Spectral
  url: rules/buftechnologies-rules.yml
- type: JSONLD
  url: json-ld/buftechnologies-context.jsonld
- type: Vocabulary
  url: vocabulary/buftechnologies-vocabulary.yml
- type: DataModel
  url: data-model/buftechnologies-data-model.yml
- type: CLI
  url: cli/buftechnologies-cli.yml
- type: Conformance
  url: conformance/buftechnologies-conformance.yml
- type: WellKnown
  url: well-known/buftechnologies-well-known.yml
- type: Hosts
  url: hosts/buftechnologies-hosts.yml
- type: Vendors
  url: vendors/buftechnologies-vendors.yml
- type: ChangeLog
  url: https://buf.build/docs/bsr/admin/on-prem/release-notes/
- type: DomainSecurity
  url: security/buftechnologies-domain-security.yml
- type: Website
  url: https://buf.build
- type: Documentation
  url: https://buf.build/docs
- type: APIReference
  url: https://buf.build/docs
- type: GettingStarted
  url: https://buf.build/docs/cli/quickstart
- type: Support
  url: https://buf.build/contact
- type: Blog
  url: https://buf.build/blog
- type: GitHubOrganization
  url: https://github.com/bufbuild
- type: Pricing
  url: https://buf.build/pricing
- type: SignUp
  url: https://buf.build/signup
- type: TermsOfService
  url: https://buf.build/legal/terms-of-use
- type: PrivacyPolicy
  url: https://buf.build/legal/privacy-policy
apis:
- name: Buf API
  description: Buf provides a Schema Registry API and Connect RPC services, but no public OpenAPI spec is available.
  humanURL: https://buf.build/docs
  baseURL: null
  aid: buftechnologies:buf-api
- aid: buftechnologies:buftechnologies-connectrpc-api
  name: Buftechnologies Connectrpc API
  description: The Connectrpc API from Buftechnologies — 2 operation(s) for connectrpc.
  humanURL: https://buf.build/docs
  baseURL: https://demo.connectrpc.com
  tags:
  - Connect RPC
  tags_raw:
  - Connectrpc
  properties:
  - type: OpenAPI
    url: openapi/buftechnologies-connectrpc-api-openapi.yml
  - type: JSONSchema
    url: json-schema/buftechnologies-post-connectrpc-eliza-v1-elizaservice-connectrpcelizav1-elizaservi-schema.json
- aid: buftechnologies:buftechnologies-foo-api
  name: Buftechnologies Foo API
  description: The Foo API from Buftechnologies — 1 operation(s) for foo.
  humanURL: https://buf.build/docs
  baseURL: https://demo.connectrpc.com
  tags:
  - Foo
  properties:
  - type: OpenAPI
    url: openapi/buftechnologies-foo-api-openapi.yml
  - type: JSONSchema
    url: json-schema/buftechnologies-post-connectrpc-eliza-v1-elizaservice-connectrpcelizav1-elizaservi-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Documentation at https://buf.build/docs provides guides but no public OpenAPI or other machine‑readable contract
    is available.
  evidence:
  - url: https://buf.build/docs
    status: 200
  checked: '2026-10-06'
x-enrichment:
  date: '2026-10-06'
  status: enriched
  artifacts_added: 17
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Buftechnologies API — frequently asked questions

Does Buftechnologies have an API?

Yes. APIs.io lists 3 APIs from Buftechnologies, including Buf API, Buftechnologies Connectrpc API and Buftechnologies Foo API.

Is there an OpenAPI specification for the Buftechnologies API?

Yes. APIs.io indexes 2 OpenAPI specifications for Buftechnologies, each linked for download from this page.

How much does the Buftechnologies API cost?

Buftechnologies publishes its prices; its Teams plan is $0.50 per type/ month as of 2026-10-06. APIs.io lists 4 pricing plans for Buftechnologies, with each plan's price, limits and inclusions under Pricing on this page.

Is the Buftechnologies API ready for AI agents?

Buftechnologies has a Kin Score of 36.9 out of 100 (thin) and an Agent Readiness score of 29.6 (agent-ready), scored by API Evangelist on 2026-11-06.

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