tRPC website screenshot

tRPC

tRPC is a TypeScript framework for building end-to-end typesafe APIs without code generation or schemas. It leverages TypeScript's type inference to provide full static typesafety and autocompletion between client and server, with zero runtime dependencies. tRPC v11 supports queries, mutations, and subscriptions via HTTP GET/POST and WebSocket adapters for Express, Fastify, Next.js, AWS Lambda, and edge runtimes.

tRPC publishes 1 API on the APIs.io network: Procedures API. Tagged areas include API Composition, API Framework, BFF, End-to-End Type Safety, and RPC.

The tRPC catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

tRPC’s developer surface includes authentication, documentation, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
49.5/100 developing ▬ flat Agent 34/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemiumSelf serve⚡ Free to try
1 APIs
API CompositionAPI FrameworkBFFEnd-to-End Type SafetyRPCTypeScript

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 49.5/100 · developing
Contract Quality 18.6 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 7.0 / 12
Discoverability 6.9 / 10
Agent readiness — 34/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/trpc: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

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

tRPC Procedures API

tRPC procedures exposed as REST endpoints

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

tRPC OpenAPI Example

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Trpc Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Trpc Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Trpc Finops

FINOPS

Semantic Vocabularies 1

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

Trpc Context

19 classes · 0 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

tRPC API Rules

5 rules · 4 warnings 1 info

SPECTRAL

tRPC API Rules

8 rules · 3 errors 2 warnings

SPECTRAL

JSON Schema 2

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

tRPC Error

1 properties

JSON SCHEMA

tRPC Procedure

3 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Trpc Router Structure

0 properties

JSON STRUCTURE

Examples 2

Example request and response payloads for these APIs.

Trpc Mutation Procedure Example

3 fields

EXAMPLE

Trpc Query Procedure Example

3 fields

EXAMPLE

Security Posture 2

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

Trpc Authentication

http · 1 scheme

SECURITY

Trpc Domain Security

TLSv1.3 · HSTS · DNSSEC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Trpc Agentic Access

4 operations · 2 acting

4 operations · 2 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 LlmsText
LlmsText

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 GitHubRepository
GitHubRepository
 NPM
NPM

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

Discord
Discord

Company 3

The organization behind the API

Website
Website
 Twitter
Twitter
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: trpc
name: tRPC
description: tRPC is a TypeScript framework for building end-to-end typesafe APIs without code generation or schemas. It leverages
  TypeScript's type inference to provide full static typesafety and autocompletion between client and server, with zero runtime
  dependencies. tRPC v11 supports queries, mutations, and subscriptions via HTTP GET/POST and WebSocket adapters for Express,
  Fastify, Next.js, AWS Lambda, and edge runtimes.
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/trpc.png
tags:
- API Composition
- API Framework
- BFF
- End-to-End Type Safety
- RPC
- TypeScript
url: https://raw.githubusercontent.com/api-evangelist/trpc/refs/heads/main/apis.yml
created: '2026-03-27'
modified: '2026-05-19'
specificationVersion: '0.19'
apis:
- aid: trpc:trpc-procedures-api
  name: tRPC Procedures API
  description: tRPC procedures exposed as REST endpoints
  humanURL: https://trpc.io/docs/
  baseURL: https://your-server.example.com/api/trpc
  tags:
  - Procedures
  properties:
  - type: OpenAPI
    url: openapi/trpc-procedures-api-openapi.yml
  - type: Documentation
    url: https://trpc.io/docs
  - type: GettingStarted
    url: https://trpc.io/docs/quickstart
  - type: GitHubRepository
    url: https://github.com/trpc/trpc
  - type: SpectralRules
    url: https://raw.githubusercontent.com/api-evangelist/trpc/refs/heads/main/rules/trpc-rules.yml
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/trpc/refs/heads/main/json-schema/trpc-procedure-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/trpc/refs/heads/main/json-schema/trpc-error-schema.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/trpc/refs/heads/main/json-ld/trpc-context.jsonld
  - type: Vocabulary
    url: https://raw.githubusercontent.com/api-evangelist/trpc/refs/heads/main/vocabulary/trpc-vocabulary.yml
common:
- type: AgenticAccess
  url: agentic-access/trpc-agentic-access.yml
- type: DomainSecurity
  url: security/trpc-domain-security.yml
- type: Authentication
  url: authentication/trpc-authentication.yml
- type: Website
  url: https://trpc.io/
- type: Documentation
  url: https://trpc.io/docs
- type: GitHubOrganization
  url: https://github.com/trpc
- type: GitHubRepository
  url: https://github.com/trpc/trpc
- type: NPM
  url: https://www.npmjs.com/package/@trpc/server
- type: Discord
  url: https://trpc.io/discord
- type: Twitter
  url: https://twitter.com/alexdotjs
- type: LlmsText
  url: https://trpc.io/llms.txt
- url: https://trpc.io/blog/rss.xml
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com