Relace

Relace builds purpose-built AI models and infrastructure for coding agents. Its hosted API exposes fast, specialized models — Instant Apply (relace-apply-3) for merging LLM code edits at over 10k tok/s, a Code Reranker (relace-rank) and code embeddings for semantic codebase retrieval, and Compact for compressing agent traces — alongside Relace Repos, a "GitHub for AI agents" source-control layer with built-in two-stage retrieval and Fast Agentic Search. Authentication is a Bearer API key (rlc- prefix); official Python and TypeScript SDKs and an MCP server are published, and enterprise SOC 2, on-premise, and VPC-isolated deployments are offered. Backed by Matrix Partners and Y Combinator.

Relace publishes 2 API contracts indexed on the APIs.io network: Code API and Repo API. Tagged areas include Company, Artificial Intelligence, Coding Agents, Code Generation, and Developer Tools.

The Relace catalog on APIs.io includes 1 Spectral governance ruleset.

Relace’s developer surface includes documentation, API reference, getting-started guide, quickstart, signup flow, pricing, engineering blog, and 25 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

55.6/100 strong ▬ flat Agent 39/100 agent ready Front door AI 4/6 moderate Heartbeat 19/100 slowing saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract 1 MCP Servers 3 Agent Skills

Company Artificial Intelligence Coding Agents Code Generation Developer Tools Machine Learning Code Search LLM Foundation Models

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Software Product Engineering Management

BC-4200

CodeRepo

POST /v1/repo POST /v1/repo/{repo_id}/update POST /v1/code/apply

Kin Score

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

Composite quality — 55.6/100 · strong

Contract Quality 9.5 / 19

Developer Ergonomics 10.3 / 15

Access Clarity 11.8 / 15

Operational Transparency 1.0 / 10

Contract Governance 2.9 / 9

Discoverability 5.6 / 8

Regulatory Posture 4.1 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 39/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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 0 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the AI & Biometrics 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):

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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

6 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 50.8 — up to +12.3 composite points
Operational Transparency scores 10.5 — up to +11.6 composite points
Contract Governance scores 31.8 — up to +8.2 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/relace/apis.yml: open an issue on github.com/api-evangelist/relace 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 2

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 2

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

Relace Code API

The Code API from Relace — 5 operation(s) for code.

Relace Repo API

The Repo API from Relace — 5 operation(s) for repo.

Open Collections 2

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

Relace Code API

OPEN COLLECTION

Relace Code Repo API

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Relace MCP Server

Local (stdio) MCP server; 1 tool listed.

MCP SERVER

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Retrieve relevant files from a codebase with Relace

AGENT SKILL

Apply LLM code edits with Relace Instant Apply

AGENT SKILL

Manage a Relace Repo lifecycle

AGENT SKILL

Relace API pricing

Prices published by Relace, read 2026-10-07 from relace.ai/pricing.

Plan	Price
relace-search	$1.00/million (Input Tokens)
relace-search (output)	$3.00/million (Output Tokens)
relace-compact	$0.20/million (Input Tokens)
relace-apply-3	$0.80/million (Input Tokens)
relace-apply-3 (output)	$1.20/million (Output Tokens)
relace-rank	$0.05/million (Input Tokens)

Plan details, limits and sources →

Billed by: million input tokens · FinOps profile →

Pricing Plans 1

Published pricing tiers and plan structures.

Relace Plans Pricing

6 plans

PLANS

Service Levels 1

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

Relace

SLA

FinOps 1

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

Relace Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Relace API Rules

63 rules · 58 errors 4 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Relace Overlay

4 actions · update · relace-openapi-original.json

DERIVED

Security Posture 2

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

Relace Authentication

http · 1 scheme

SECURITY

Relace Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Relace Agentic Access

11 operations · 10 acting

AGENTIC

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

Quickstart

SignUp

Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

OpenAPI

OpenAPI

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgentSkill

LLMsTxt

AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Lifecycle

Conventions

Conformance

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 3

Authentication, authorization, and security posture

Compliance

Compliance

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: relace
name: Relace
description: Relace builds purpose-built AI models and infrastructure for coding agents. Its hosted API exposes fast, specialized
  models — Instant Apply (relace-apply-3) for merging LLM code edits at over 10k tok/s, a Code Reranker (relace-rank) and
  code embeddings for semantic codebase retrieval, and Compact for compressing agent traces — alongside Relace Repos, a "GitHub
  for AI agents" source-control layer with built-in two-stage retrieval and Fast Agentic Search. Authentication is a Bearer
  API key (rlc- prefix); official Python and TypeScript SDKs and an MCP server are published, and enterprise SOC 2, on-premise,
  and VPC-isolated deployments are offered. Backed by Matrix Partners and Y Combinator.
url: https://raw.githubusercontent.com/api-evangelist/relace/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://framerusercontent.com/images/D6XFBAXygf3ZHyjrXSmLmItnPI.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- matrix-partners
x-tier: profiled
x-tier-reason: enriched-from-live-api
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-04
x-docs-hosting: vercel
tags:
- Company
- Artificial Intelligence
- Coding Agents
- Code Generation
- Developer Tools
- Machine Learning
- Code Search
- LLM
- Foundation Models
tags_raw:
- Company
- AI
- Coding Agents
- Code Generation
- Developer Tools
- Machine Learning
- Code Search
- LLM
- Machine-Learning
- Foundation Models
apis:
- aid: relace:relace-code-api
  name: Relace Code API
  description: The Code API from Relace — 5 operation(s) for code.
  humanURL: https://docs.relace.ai/docs/introduction
  baseURL: https://api.relace.run
  tags:
  - Code
  properties:
  - type: OpenAPI
    url: openapi/relace-code-api-openapi.yml
  - type: Documentation
    url: https://docs.relace.ai/docs/introduction
  - type: APIReference
    url: https://docs.relace.ai/api-reference/introduction
- aid: relace:relace-repo-api
  name: Relace Repo API
  description: The Repo API from Relace — 5 operation(s) for repo.
  humanURL: https://docs.relace.ai/docs/introduction
  baseURL: https://api.relace.run
  tags:
  - Repo
  properties:
  - type: OpenAPI
    url: openapi/relace-repo-api-openapi.yml
  - type: Documentation
    url: https://docs.relace.ai/docs/introduction
  - type: APIReference
    url: https://docs.relace.ai/api-reference/introduction
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/relace-plans-pricing.yml
- type: CapabilityMap
  url: capabilities/relace-capability-edges.yml
  name: Relace Business Capability Map
- type: DeveloperPortal
  url: https://docs.relace.ai
- type: Documentation
  url: https://docs.relace.ai/docs/introduction
- type: APIReference
  url: https://docs.relace.ai/api-reference/introduction
- type: GettingStarted
  url: https://docs.relace.ai/docs/instant-apply/quickstart
- type: Quickstart
  url: https://docs.relace.ai/docs/instant-apply/quickstart
- type: SignUp
  url: https://app.relace.ai/sign-up
- type: Pricing
  url: https://relace.ai/pricing
- type: Blog
  url: https://relace.ai/blog
- type: TermsOfService
  url: https://relace.ai/legal/terms-of-use
- type: PrivacyPolicy
  url: https://relace.ai/legal/privacy-policy
- type: GitHubOrganization
  url: https://github.com/squack-io
- type: StatusPage
  url: https://status.relace.ai/
- type: Compliance
  url: https://relace.ai/pricing
- type: Authentication
  url: authentication/relace-authentication.yml
- type: OpenAPI
  url: openapi/_original/relace-openapi-original.json
- type: MCPServer
  url: mcp/relace-mcp.yml
- type: Packages
  url: packages/relace-packages.yml
- type: SDKs
  url: packages/relace-packages.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/relace-llms.txt
- type: ErrorCatalog
  url: errors/relace-error-codes.yml
- type: Lifecycle
  url: lifecycle/relace-lifecycle.yml
- type: Conventions
  url: conventions/relace-conventions.yml
- type: Conformance
  url: conformance/relace-conformance.yml
- type: DataModel
  url: data-model/relace-data-model.yml
- type: Sandbox
  url: sandbox/relace-sandbox.yml
- type: Overlay
  url: overlays/relace-overlay.yaml
- type: AgenticAccess
  url: agentic-access/relace-agentic-access.yml
- type: DomainSecurity
  url: security/relace-domain-security.yml
- type: Website
  url: https://relace.ai
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 16
  pass: local-v1

Relace API — frequently asked questions

Does Relace have an API?

Yes. APIs.io lists 2 APIs from Relace, including Relace Code API and Relace Repo API.

Is there an OpenAPI specification for the Relace API?

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

How do I authenticate with the Relace API?

Relace uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Relace Authentication.

How much does the Relace API cost?

Relace publishes its prices; its relace-search plan is $1.00/million (Input Tokens) as of 2026-10-07. APIs.io lists 6 pricing plans for Relace, with each plan's price, limits and inclusions under Pricing on this page.

Does Relace have an MCP server?

Yes. APIs.io lists 1 MCP server for Relace: Local (stdio) MCP server; 1 tool listed.

Is the Relace API ready for AI agents?

Relace has a Kin Score of 55.6 out of 100 (strong) and an Agent Readiness score of 38.8 (agent-ready), scored by API Evangelist on 2026-11-06.

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get_provider_artifactsEvery artifact this provider publishes, grouped by type.
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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