ACI.dev

ACI.dev (Aipolabs Agent-Computer Interface) is an open-source tool-calling platform that hooks AI agents into 600+ pre-built tools through direct function calling or a unified Model Context Protocol server. Maintained by Aipotheosis Labs (Aipolabs) under Apache 2.0, ACI provides multi-tenant OAuth2 and API-key authentication, per-project App Configurations, natural-language permission guardrails, OpenAI- and Anthropic-compatible function definitions, Python and TypeScript SDKs, and the unified aci-mcp server with ACI_SEARCH_FUNCTIONS and ACI_EXECUTE_FUNCTION meta-tools. The sister project Gate22 adds an open-source MCP gateway and control plane for governing which tools agents can use, what they can do, and how it is audited.

ACI.dev publishes 4 APIs on the APIs.io network, including app-configurations API, apps API, functions API, and 1 more. Tagged areas include Agent Infrastructure, Agents, Artificial Intelligence, Function Calling, and MCP.

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

ACI.dev’s developer surface includes authentication, developer portal, documentation, getting-started guide, and 30 more developer resources.

🌐 Visit website 📡 Source on GitHub

36.8/100 thin ▬ flat Agent 24/100 agent aware library · Apache License 2.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs 13 Features

Agent Infrastructure Agents Artificial Intelligence Function Calling MCP Authentication Open-Source Tool CallingVibeOps

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 36.8/100 · thin

Contract Quality 16.0 / 23

Developer Ergonomics 9.0 / 18

Access Clarity 0.0 / 18

Operational Transparency 0.3 / 12

Contract Governance 3.1 / 11

Discoverability 5.3 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 24/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 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

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.

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 github.com/api-evangelist/aci-dev: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 4

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

ACI.dev app-configurations API

The app-configurations API from ACI.dev — 2 operation(s) for app-configurations.

ACI.dev apps API

The apps API from ACI.dev — 2 operation(s) for apps.

ACI.dev functions API

The functions API from ACI.dev — 3 operation(s) for functions.

ACI.dev linked-accounts API

The linked-accounts API from ACI.dev — 4 operation(s) for linked-accounts.

Open Collections 6

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

API Collection

OPEN COLLECTION

ACI.dev app-configurations API

OPEN COLLECTION

ACI.dev app-configurations apps API

OPEN COLLECTION

ACI.dev app-configurations functions API

OPEN COLLECTION

ACI.dev app-configurations linked-accounts API

OPEN COLLECTION

ACI.dev API

OPEN COLLECTION

Features 13

Notable capabilities this provider offers.

600+ pre-built App integrations (Slack, Gmail, Zendesk, GitHub, Notion, Stripe, and more)

Unified MCP server (aci-mcp) exposing ACI_SEARCH_FUNCTIONS and ACI_EXECUTE_FUNCTION meta-tools

Apps MCP mode that surfaces a specific set of Apps as named MCP tools

Node port (aci-mcp-node) for TypeScript-native MCP integration

OpenAI-compatible and Anthropic-compatible function-definition output formats

Multi-tenant end-user OAuth2 link flow, white-label OAuth2 for production branding

Per-project App Configurations with function-level enable/disable and security-scheme overrides

Natural-language permission filters that guardrail tool executions

Custom functions SDK for registering proprietary tools alongside the catalog

Agent Playground for prompting against the unified catalog before wiring it into production

Python and TypeScript SDKs (aci-python-sdk, aci-typescript-sdk)

Sister project gate22 — open-source MCP gateway and control plane for governance and audit across Cursor and other agentic IDEs

Self-hostable backend, frontend portal, and SDKs under Apache 2.0

Scroll for all 13

Semantic Vocabularies 1

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

Aci Dev Context

0 classes · 5 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

ACI.dev API Rules

5 rules · 4 warnings 1 info

SPECTRAL

ACI.dev API Rules

7 rules · 3 errors 4 warnings

SPECTRAL

JSON Schema 9

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

AnthropicFunctionDefinition

3 properties

JSON SCHEMA

AppConfigurationPublic

10 properties

JSON SCHEMA

AppBasic

2 properties

JSON SCHEMA

AppBasicWithFunctions

3 properties

JSON SCHEMA

FunctionExecute

2 properties

JSON SCHEMA

FunctionExecutionResult

3 properties

JSON SCHEMA

FunctionBasic

2 properties

JSON SCHEMA

LinkedAccountPublic

8 properties

JSON SCHEMA

OpenAIFunctionDefinition

2 properties

JSON SCHEMA

Scroll for all 9

Examples 3

Example request and response payloads for these APIs.

Aci Dev Execute Function Example

2 fields

EXAMPLE

Aci Dev Link Oauth2 Account Example

2 fields

EXAMPLE

Aci Dev Search Functions Example

2 fields

EXAMPLE

Security Posture 2

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

Aci Dev Authentication

apiKey · 1 scheme

SECURITY

Aci Dev Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Aci Dev Agentic Access

15 operations · 5 acting

AGENTIC

Integrations 4

Pre-built integrations with other platforms and tools.

Anthropic Claude (function definitions returned in Anthropic tool-use format)

OpenAI (function definitions returned in OpenAI tool-use format)

Model Context Protocol (Cursor, Claude Desktop, Claude Code, and other MCP clients)

GitHub, Gmail, Slack, Zendesk, Notion, Stripe and 600+ other apps via the ACI catalog

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal

Portal

GettingStarted

GettingStarted

Documentation 12

Reference material describing how the API behaves

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Scroll for all 12

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Vocabulary

Vocabulary

SpectralRules

SpectralRules

JSONLD

JSONLD

Build 10

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

SourceCode

SourceCode

SourceCode

SDKs

SDKs

SourceCode

SourceCode

SourceCode

SourceCode

Scroll for all 10

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Commercial 1

Pricing, plans, and the legal terms of use

License

License

Company 3

The organization behind the API

Website

Website

LinkedIn

Twitter

Twitter

Source (apis.yml)

aid: aci-dev
url: https://raw.githubusercontent.com/api-evangelist/aci-dev/refs/heads/main/apis.yml
apis:
- aid: aci-dev:aci-dev-app-configurations-api
  name: ACI.dev app-configurations API
  description: The app-configurations API from ACI.dev — 2 operation(s) for app-configurations.
  humanURL: https://aci.dev/docs/core-concepts/app.md
  tags:
  - App Configurations
  tags_raw:
  - app-configurations
  properties:
  - type: OpenAPI
    url: openapi/aci-dev-app-configurations-api-openapi.yml
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/app.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/apps/search-apps.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/apps/get-app-details.md
  - type: JSONSchema
    url: json-schema/aci-dev-app-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-app-with-functions-schema.json
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/function.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/functions/search-functions.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/functions/get-function-definition.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/functions/execute.md
  - type: JSONSchema
    url: json-schema/aci-dev-function-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-function-execute-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-function-execution-result-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-openai-function-definition-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-anthropic-function-definition-schema.json
  - type: Examples
    url: examples/aci-dev-search-functions-example.json
  - type: Examples
    url: examples/aci-dev-execute-function-example.json
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/app-configuration.md
  - type: JSONSchema
    url: json-schema/aci-dev-app-configuration-schema.json
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/linked-account.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/linked-accounts/link-oauth2-account.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/linked-accounts/linked-accounts-oauth2-callback.md
  - type: Documentation
    url: https://aci.dev/docs/advanced/oauth2-whitelabel.md
  - type: JSONSchema
    url: json-schema/aci-dev-linked-account-schema.json
  - type: Examples
    url: examples/aci-dev-link-oauth2-account-example.json
- aid: aci-dev:aci-dev-apps-api
  name: ACI.dev apps API
  description: The apps API from ACI.dev — 2 operation(s) for apps.
  humanURL: https://aci.dev/docs/core-concepts/app.md
  tags:
  - Application
  tags_raw:
  - apps
  properties:
  - type: OpenAPI
    url: openapi/aci-dev-apps-api-openapi.yml
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/app.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/apps/search-apps.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/apps/get-app-details.md
  - type: JSONSchema
    url: json-schema/aci-dev-app-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-app-with-functions-schema.json
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/function.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/functions/search-functions.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/functions/get-function-definition.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/functions/execute.md
  - type: JSONSchema
    url: json-schema/aci-dev-function-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-function-execute-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-function-execution-result-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-openai-function-definition-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-anthropic-function-definition-schema.json
  - type: Examples
    url: examples/aci-dev-search-functions-example.json
  - type: Examples
    url: examples/aci-dev-execute-function-example.json
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/app-configuration.md
  - type: JSONSchema
    url: json-schema/aci-dev-app-configuration-schema.json
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/linked-account.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/linked-accounts/link-oauth2-account.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/linked-accounts/linked-accounts-oauth2-callback.md
  - type: Documentation
    url: https://aci.dev/docs/advanced/oauth2-whitelabel.md
  - type: JSONSchema
    url: json-schema/aci-dev-linked-account-schema.json
  - type: Examples
    url: examples/aci-dev-link-oauth2-account-example.json
- aid: aci-dev:aci-dev-functions-api
  name: ACI.dev functions API
  description: The functions API from ACI.dev — 3 operation(s) for functions.
  humanURL: https://aci.dev/docs/core-concepts/app.md
  tags:
  - Functions
  tags_raw:
  - functions
  properties:
  - type: OpenAPI
    url: openapi/aci-dev-functions-api-openapi.yml
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/app.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/apps/search-apps.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/apps/get-app-details.md
  - type: JSONSchema
    url: json-schema/aci-dev-app-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-app-with-functions-schema.json
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/function.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/functions/search-functions.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/functions/get-function-definition.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/functions/execute.md
  - type: JSONSchema
    url: json-schema/aci-dev-function-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-function-execute-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-function-execution-result-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-openai-function-definition-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-anthropic-function-definition-schema.json
  - type: Examples
    url: examples/aci-dev-search-functions-example.json
  - type: Examples
    url: examples/aci-dev-execute-function-example.json
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/app-configuration.md
  - type: JSONSchema
    url: json-schema/aci-dev-app-configuration-schema.json
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/linked-account.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/linked-accounts/link-oauth2-account.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/linked-accounts/linked-accounts-oauth2-callback.md
  - type: Documentation
    url: https://aci.dev/docs/advanced/oauth2-whitelabel.md
  - type: JSONSchema
    url: json-schema/aci-dev-linked-account-schema.json
  - type: Examples
    url: examples/aci-dev-link-oauth2-account-example.json
- aid: aci-dev:aci-dev-linked-accounts-api
  name: ACI.dev linked-accounts API
  description: The linked-accounts API from ACI.dev — 4 operation(s) for linked-accounts.
  humanURL: https://aci.dev/docs/core-concepts/app.md
  tags:
  - Linked Accounts
  tags_raw:
  - linked-accounts
  properties:
  - type: OpenAPI
    url: openapi/aci-dev-linked-accounts-api-openapi.yml
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/app.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/apps/search-apps.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/apps/get-app-details.md
  - type: JSONSchema
    url: json-schema/aci-dev-app-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-app-with-functions-schema.json
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/function.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/functions/search-functions.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/functions/get-function-definition.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/functions/execute.md
  - type: JSONSchema
    url: json-schema/aci-dev-function-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-function-execute-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-function-execution-result-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-openai-function-definition-schema.json
  - type: JSONSchema
    url: json-schema/aci-dev-anthropic-function-definition-schema.json
  - type: Examples
    url: examples/aci-dev-search-functions-example.json
  - type: Examples
    url: examples/aci-dev-execute-function-example.json
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/app-configuration.md
  - type: JSONSchema
    url: json-schema/aci-dev-app-configuration-schema.json
  - type: Documentation
    url: https://aci.dev/docs/core-concepts/linked-account.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/linked-accounts/link-oauth2-account.md
  - type: Documentation
    url: https://aci.dev/docs/api-reference/linked-accounts/linked-accounts-oauth2-callback.md
  - type: Documentation
    url: https://aci.dev/docs/advanced/oauth2-whitelabel.md
  - type: JSONSchema
    url: json-schema/aci-dev-linked-account-schema.json
  - type: Examples
    url: examples/aci-dev-link-oauth2-account-example.json
name: ACI.dev
tags:
- Agent Infrastructure
- Agents
- Artificial Intelligence
- Function Calling
- MCP
- Authentication
- Open-Source
- Tool Calling
- VibeOps
tags_raw:
- Agent Infrastructure
- Agents
- AI
- Artificial Intelligence
- Function Calling
- MCP
- Model Context Protocol
- OAuth
- Open Source
- Tool Calling
- VibeOps
kind: contract
deliveryModel:
  model: library
  license: Apache License 2.0
  open_source: false
  commercial: false
  callable_host: false
  label: Library · distributed through package registries, no callable service
  confidence: low
  source:
  - license
  - openapi
  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: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/aci-dev.png
access: 3rd-Party
common:
- type: Website
  url: https://www.aci.dev/
- type: AgenticAccess
  url: agentic-access/aci-dev-agentic-access.yml
- type: DomainSecurity
  url: security/aci-dev-domain-security.yml
- type: Authentication
  url: authentication/aci-dev-authentication.yml
- type: Portal
  url: https://aci.dev
- type: Documentation
  url: https://aci.dev/docs
- type: GettingStarted
  url: https://aci.dev/docs/introduction/quickstart.md
- type: Documentation
  url: https://aci.dev/docs/api-reference/overview.md
  name: API Reference Overview
- type: Documentation
  url: https://aci.dev/docs/api-reference/openapi.json
  name: ACI.dev OpenAPI (authoritative)
- type: Documentation
  url: https://aci.dev/docs/sdk/intro.md
  name: SDK Introduction
- type: Documentation
  url: https://aci.dev/docs/sdk/custom-functions.md
  name: Custom Functions
- type: Documentation
  url: https://aci.dev/docs/mcp-servers/introduction
  name: MCP Servers Introduction
- type: Documentation
  url: https://aci.dev/docs/agent-playground/introduction.md
  name: Agent Playground
- type: Documentation
  url: https://aci.dev/docs/advanced/oauth2-whitelabel.md
  name: White-label OAuth2
- type: Documentation
  url: https://aci.dev/docs/llms.txt
  name: llms.txt Documentation Index
- type: GitHubOrganization
  url: https://github.com/aipotheosis-labs
- url: https://github.com/aipotheosis-labs/aci
  name: aci (open-source tool-calling platform)
  type: SourceCode
- url: https://github.com/aipotheosis-labs/aci-mcp
  name: aci-mcp (Python MCP server)
  type: SourceCode
- url: https://github.com/aipotheosis-labs/aci-mcp-node
  name: aci-mcp-node (Node/TypeScript MCP server)
  type: SourceCode
- url: https://github.com/aipotheosis-labs/aci-python-sdk
  name: aci-python-sdk
  type: SDKs
- url: https://github.com/aipotheosis-labs/aci-typescript-sdk
  name: aci-typescript-sdk
  type: SDKs
- url: https://github.com/aipotheosis-labs/aci-agents
  name: aci-agents (example agents)
  type: SourceCode
- url: https://github.com/aipotheosis-labs/aci-developer-docs
  name: aci-developer-docs
  type: SourceCode
- url: https://github.com/aipotheosis-labs/gate22
  name: gate22 (MCP gateway and control plane)
  type: SourceCode
- url: https://github.com/aipotheosis-labs/gate22-docs
  name: gate22-docs
  type: SourceCode
- url: https://platform.aci.dev
  name: ACI.dev Platform Console
  type: Documentation
- url: https://discord.gg/nnqFSzq2ne
  name: Aipolabs Discord
  type: Documentation
- url: https://www.linkedin.com/company/aipotheosis-labs-aipolabs
  type: LinkedIn
- url: https://twitter.com/AipoLabs
  name: '@AipoLabs on X'
  type: Twitter
- url: https://www.youtube.com/@AipotheosisLabs
  name: Aipotheosis Labs on YouTube
  type: Documentation
- type: License
  url: https://www.apache.org/licenses/LICENSE-2.0
  name: Apache License 2.0
- type: Features
  data:
  - 600+ pre-built App integrations (Slack, Gmail, Zendesk, GitHub, Notion, Stripe, and more)
  - Unified MCP server (aci-mcp) exposing ACI_SEARCH_FUNCTIONS and ACI_EXECUTE_FUNCTION meta-tools
  - Apps MCP mode that surfaces a specific set of Apps as named MCP tools
  - Node port (aci-mcp-node) for TypeScript-native MCP integration
  - OpenAI-compatible and Anthropic-compatible function-definition output formats
  - Multi-tenant end-user OAuth2 link flow, white-label OAuth2 for production branding
  - Per-project App Configurations with function-level enable/disable and security-scheme overrides
  - Natural-language permission filters that guardrail tool executions
  - Custom functions SDK for registering proprietary tools alongside the catalog
  - Agent Playground for prompting against the unified catalog before wiring it into production
  - Python and TypeScript SDKs (aci-python-sdk, aci-typescript-sdk)
  - Sister project gate22 — open-source MCP gateway and control plane for governance and audit across Cursor and other agentic
    IDEs
  - Self-hostable backend, frontend portal, and SDKs under Apache 2.0
  sources:
  - https://aci.dev
  - https://aci.dev/docs/llms.txt
  - https://github.com/aipotheosis-labs/aci
  - https://github.com/aipotheosis-labs/aci-mcp
  - https://github.com/aipotheosis-labs/gate22
- type: Integrations
  data:
  - Anthropic Claude (function definitions returned in Anthropic tool-use format)
  - OpenAI (function definitions returned in OpenAI tool-use format)
  - Model Context Protocol (Cursor, Claude Desktop, Claude Code, and other MCP clients)
  - GitHub, Gmail, Slack, Zendesk, Notion, Stripe and 600+ other apps via the ACI catalog
  sources:
  - https://aci.dev/docs/mcp-servers/introduction
  - https://github.com/aipotheosis-labs/aci-mcp
- url: vocabulary/aci-dev-vocabulary.yml
  type: Vocabulary
- url: rules/aci-dev-rules.yml
  type: SpectralRules
- url: json-ld/aci-dev-context.jsonld
  type: JSONLD
created: '2026-05-25'
modified: '2026-05-25'
position: Producing
description: ACI.dev (Aipolabs Agent-Computer Interface) is an open-source tool-calling platform that hooks AI agents into
  600+ pre-built tools through direct function calling or a unified Model Context Protocol server. Maintained by Aipotheosis
  Labs (Aipolabs) under Apache 2.0, ACI provides multi-tenant OAuth2 and API-key authentication, per-project App Configurations,
  natural-language permission guardrails, OpenAI- and Anthropic-compatible function definitions, Python and TypeScript SDKs,
  and the unified aci-mcp server with ACI_SEARCH_FUNCTIONS and ACI_EXECUTE_FUNCTION meta-tools. The sister project Gate22
  adds an open-source MCP gateway and control plane for governing which tools agents can use, what they can do, and how it
  is audited.
maintainers:
- FN: Kin Lane
  email: info@apievangelist.com
  X: apievangelist
  url: https://apievangelist.com
specificationVersion: '0.23'

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

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https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
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.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/aci-dev"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/aci-dev/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/aci-dev/evidence"

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