Squid

Squid is a high-performance caching and forwarding HTTP web proxy used for content caching, access control, and bandwidth management. It supports HTTP, HTTPS, FTP, and other protocols, providing caching proxy features, access control lists, SSL/TLS inspection, and web content filtering for enterprises and internet service providers.

Squid publishes 5 APIs on the APIs.io network, including Cache Statistics API, Configuration API, Connections API, and 2 more. Tagged areas include Caching Proxy, Proxy, HTTP Proxy, Web Cache, and Access Control.

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

Squid’s developer surface includes authentication, documentation, changelog, FAQ, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

35.4/100 thin ▬ flat Agent 23/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessFreemiumSelf serve⚡ Free to try

6 APIs

Caching ProxyProxy HTTP ProxyWeb CacheAccess Control Content Filtering

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 35.4/100 · thin

Contract Quality 14.6 / 25

Developer Ergonomics 4.3 / 20

Access Clarity 3.2 / 20

Operational Transparency 3.4 / 13

Contract Governance 3.5 / 12

Discoverability 6.5 / 10

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 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 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

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/squid: 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 6

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

Rate Limits 1

Documented rate limits and quota policies.

Squid Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

JSON Schema 1

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

Examples 2

Example request and response payloads for these APIs.

AGENTIC

Resources

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

OpenAPI

OpenAPI

JSONSchema

JSONSchema

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

JSONStructure

JSONLDContext

SpectralRules

Vocabulary

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

FAQ

FAQ

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Mailing List

Mailing List

Source (apis.yml)

aid: squid
name: Squid
description: Squid is a high-performance caching and forwarding HTTP web proxy used for content caching, access control, and
  bandwidth management. It supports HTTP, HTTPS, FTP, and other protocols, providing caching proxy features, access control
  lists, SSL/TLS inspection, and web content filtering for enterprises and internet service providers.
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/squid.png
tags:
- Caching Proxy
- Proxy
- HTTP Proxy
- Web Cache
- Access Control
- Content Filtering
url: https://raw.githubusercontent.com/api-evangelist/squid/refs/heads/main/apis.yml
created: '2026-03-27'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: squid:squid-access-control
  name: Squid Access Control Configuration API
  description: Squid provides extensive access control configuration through its squid.conf file and runtime reload capabilities.
    The access control system supports ACLs for IP addresses, domain names, URL patterns, user authentication, time-of-day
    restrictions, and MIME type filtering.
  humanURL: http://www.squid-cache.org/Doc/config/acl/
  baseURL: http://localhost:3128/squid-internal-mgr
  tags:
  - Access Control
  - Configuration
  - HTTP Proxy
  properties:
  - type: Documentation
    url: http://www.squid-cache.org/Doc/config/acl/
  - type: GettingStarted
    url: http://www.squid-cache.org/Doc/config/
- aid: squid:squid-cache-statistics-api
  name: Squid Cache Statistics API
  description: Cache performance metrics and counters
  humanURL: http://www.squid-cache.org/Doc/config/cachemgr_passwd/
  baseURL: http://localhost:3128/squid-internal-mgr
  tags:
  - Cache Statistics
  properties:
  - type: OpenAPI
    url: openapi/squid-cache-statistics-api-openapi.yml
  - type: Documentation
    url: http://www.squid-cache.org/Doc/
  - type: GettingStarted
    url: http://www.squid-cache.org/Doc/config/
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/squid/refs/heads/main/json-schema/squid-cache-stats-schema.json
- aid: squid:squid-configuration-api
  name: Squid Configuration API
  description: Runtime configuration and ACL information
  humanURL: http://www.squid-cache.org/Doc/config/cachemgr_passwd/
  baseURL: http://localhost:3128/squid-internal-mgr
  tags:
  - Configuration
  properties:
  - type: OpenAPI
    url: openapi/squid-configuration-api-openapi.yml
  - type: Documentation
    url: http://www.squid-cache.org/Doc/
  - type: GettingStarted
    url: http://www.squid-cache.org/Doc/config/
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/squid/refs/heads/main/json-schema/squid-cache-stats-schema.json
- aid: squid:squid-connections-api
  name: Squid Connections API
  description: Active connection and request management
  humanURL: http://www.squid-cache.org/Doc/config/cachemgr_passwd/
  baseURL: http://localhost:3128/squid-internal-mgr
  tags:
  - Connections
  properties:
  - type: OpenAPI
    url: openapi/squid-connections-api-openapi.yml
  - type: Documentation
    url: http://www.squid-cache.org/Doc/
  - type: GettingStarted
    url: http://www.squid-cache.org/Doc/config/
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/squid/refs/heads/main/json-schema/squid-cache-stats-schema.json
- aid: squid:squid-memory-api
  name: Squid Memory API
  description: Memory allocation and pool statistics
  humanURL: http://www.squid-cache.org/Doc/config/cachemgr_passwd/
  baseURL: http://localhost:3128/squid-internal-mgr
  tags:
  - Memory
  properties:
  - type: OpenAPI
    url: openapi/squid-memory-api-openapi.yml
  - type: Documentation
    url: http://www.squid-cache.org/Doc/
  - type: GettingStarted
    url: http://www.squid-cache.org/Doc/config/
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/squid/refs/heads/main/json-schema/squid-cache-stats-schema.json
- aid: squid:squid-operations-api
  name: Squid Operations API
  description: Cache operational commands
  humanURL: http://www.squid-cache.org/Doc/config/cachemgr_passwd/
  baseURL: http://localhost:3128/squid-internal-mgr
  tags: []
  tags_raw:
  - Operations
  properties:
  - type: OpenAPI
    url: openapi/squid-operations-api-openapi.yml
  - type: Documentation
    url: http://www.squid-cache.org/Doc/
  - type: GettingStarted
    url: http://www.squid-cache.org/Doc/config/
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/squid/refs/heads/main/json-schema/squid-cache-stats-schema.json
common:
- type: AgenticAccess
  url: agentic-access/squid-agentic-access.yml
- type: DomainSecurity
  url: security/squid-domain-security.yml
- type: Authentication
  url: authentication/squid-authentication.yml
- type: Website
  url: http://www.squid-cache.org/
- type: Documentation
  url: http://www.squid-cache.org/Doc/
- type: GitHubOrganization
  url: https://github.com/squid-cache
- type: ChangeLog
  url: http://www.squid-cache.org/Versions/
- type: FAQ
  url: http://wiki.squid-cache.org/SquidFaq
- type: Mailing List
  url: http://www.squid-cache.org/Support/mailing-lists.html
- type: OpenAPI
  url: https://raw.githubusercontent.com/api-evangelist/squid/refs/heads/main/openapi/squid-cache-manager-openapi.yml
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/squid/refs/heads/main/json-schema/squid-cache-stats-schema.json
- type: JSONStructure
  url: https://raw.githubusercontent.com/api-evangelist/squid/refs/heads/main/json-structure/squid-cache-stats-structure.json
- type: JSONLDContext
  url: https://raw.githubusercontent.com/api-evangelist/squid/refs/heads/main/json-ld/squid-context.jsonld
- type: SpectralRules
  url: https://raw.githubusercontent.com/api-evangelist/squid/refs/heads/main/rules/squid-rules.yml
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/squid/refs/heads/main/vocabulary/squid-vocabulary.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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