Search1API

Search1API is web access infrastructure for AI agents, operated by SuperAgents, LLC (Delaware). One credit-metered REST API at api.search1api.com provides multi-engine web search (Google, Bing, DuckDuckGo, Yandex, GitHub, arXiv, Reddit, X, Baidu and more), agentic search routed by the TypeSafe Jev model, news search, page crawling, screenshots, sitemap discovery, trending topics, structured extraction and asynchronous deep crawls. The same account reaches it through an OpenAPI 3.1 contract, official TypeScript and Python SDKs, the s1 CLI, a hosted OAuth 2.1 MCP server at mcp.search1api.com, an Agent Skill, and pay-per-request MPP/x402 payment challenges.

Search1API publishes 8 API contracts indexed on the APIs.io network, including Account API, Crawl API, Feedback API, and 5 more. Tagged areas include Company, Search, Web Search, Crawling, and Web Scraping.

The Search1API catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Search1API’s developer surface includes CLI, changelog, authentication, sandbox, documentation, API reference, getting-started guide, and 39 more developer resources.

🌐 Visit website 📡 Source on GitHub
71.3/100 exemplar Agent 52/100 agent ready Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0
2 published contracts 1 MCP Servers
CompanySearchWeb SearchCrawlingWeb ScrapingNewsAI AgentsMCPAgent ToolsData ExtractionScreenshots

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-09 · rubric v0.23.0
Composite quality — 71.3/100 · exemplar
Contract Quality 13.4 / 21
Developer Ergonomics 13.7 / 17
Access Clarity 13.0 / 17
Operational Transparency 8.4 / 11
Contract Governance 3.6 / 10
Discoverability 6.1 / 9
Regulatory Posture 5.1 / 15
Agent readiness — 52/100 · 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 4 / 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 5 / 5
Registration Without a Human 6 / 6
Agentic Commerce Well-Known Document 0 / 5
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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
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/s1-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 8

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

Search1API MCP Server

Official hosted Streamable HTTP MCP server exposing search, news, crawl, sitemap and trending tools to any MCP client, with OAuth 2.1 (PKCE, dynamic client registration via cler...

Search1API Blog MCP Server

Secondary MCP server on the Search1API blog host exposing four read-only content tools (search_posts, list_posts, get_post, list_tags); an anonymous tools/list answered with the...

Search1API Account API

The Account API from Search1API — 1 operation(s) for account.

Search1API Crawl API

The Crawl API from Search1API — 5 operation(s) for crawl.

Search1API Feedback API

The Feedback API from Search1API — 1 operation(s) for feedback.

Search1API Screenshot API

The Screenshot API from Search1API — 1 operation(s) for screenshot.

Search1API Search API

The Search API from Search1API — 4 operation(s) for search.

Search1API System API

The System API from Search1API — 1 operation(s) for system.

Scroll for all 8

MCP Servers 1

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

Search1API MCP Server

Search1API operates an official hosted MCP server (Streamable HTTP) at https://mcp.search1api.com/mcp exposing five tools (search, news, crawl, sitemap, trending) over OAuth 2.1...

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

S1 Dev Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

S1 Dev Rate Limits

3 limits

RATE LIMITS

Semantic Vocabularies 1

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

S1 Dev Context

26 classes · 55 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Search1API API Rules

17 rules · 13 errors 2 warnings 2 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.

S1 Dev Openapi Overlay

21 actions · documentation · s1-dev-openapi.yml

UNRECORDED

JSON Schema 6

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

AskResponse

4 properties

JSON SCHEMA

DeepcrawlStatusResponse

7 properties

JSON SCHEMA

NewsBatchResponse

2 properties

JSON SCHEMA

NewsResponse

3 properties

JSON SCHEMA

SearchBatchResponse

2 properties

JSON SCHEMA

SearchResponse

3 properties

JSON SCHEMA

Security Posture 2

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

S1 Dev Authentication

http/oauth2/payment-challenge · 3 schemes

SECURITY

S1 Dev Domain Security

TLSv1.3

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

S1 Dev Scopes

2 scopes

2 scopes

SCOPES

Agentic Access 1

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

S1 Dev Agentic Access

13 operations · 6 acting

13 operations · 6 acting

AGENTIC

Resources

Get Started 5

Portal, sign-up, and the first successful call

Sandbox
Sandbox
 DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 Login
Login
 SignUp
SignUp

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgentSkill
AgentSkill
 AgenticAccess
AgenticAccess
 LLMsTxt
LLMsTxt
 MCPServer
MCPServer
 WellKnown
WellKnown

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Spectral
Spectral
 JSONLD
JSONLD
 Vocabulary
Vocabulary
 DataModel
DataModel
 Conventions
Conventions
 Lifecycle
Lifecycle
 ErrorCatalog
ErrorCatalog
 Conformance
Conformance

Scroll for all 8

Build 6

SDKs, sample code, and the tooling you integrate with

CLI
CLI
 ToolCrosswalk
ToolCrosswalk
 SDKs
SDKs
 Packages
Packages
 GitHubOrganization
GitHubOrganization
 GitHubOrganization
GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

Authentication
Authentication
 OAuthScopes
OAuthScopes
 DomainSecurity
DomainSecurity

Operate 7

Status, limits, changes, and where to get help

RateLimits
RateLimits
 ChangeLog
ChangeLog
 Deprecation
Deprecation
 Support
Support
 ChangeLog
ChangeLog
 ChangeLog
ChangeLog
 StatusPage
StatusPage

Scroll for all 7

Commercial 4

Pricing, plans, and the legal terms of use

Plans
Plans
 Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 3

The organization behind the API

Website
Website
 About
About
 Blog
Blog

Other 3

Properties that don't map to a standard resource type

Overlay
Overlay
 Hosts
Hosts
 Vendors
Vendors

Source (apis.yml)

apis.yml Raw ↑ 
aid: s1-dev
name: Search1API
description: Search1API is web access infrastructure for AI agents, operated by SuperAgents, LLC (Delaware). One credit-metered
  REST API at api.search1api.com provides multi-engine web search (Google, Bing, DuckDuckGo, Yandex, GitHub, arXiv, Reddit,
  X, Baidu and more), agentic search routed by the TypeSafe Jev model, news search, page crawling, screenshots, sitemap discovery,
  trending topics, structured extraction and asynchronous deep crawls. The same account reaches it through an OpenAPI 3.1
  contract, official TypeScript and Python SDKs, the s1 CLI, a hosted OAuth 2.1 MCP server at mcp.search1api.com, an Agent
  Skill, and pay-per-request MPP/x402 payment challenges.
url: https://raw.githubusercontent.com/api-evangelist/s1-dev/refs/heads/main/apis.yml
x-type: company
x-source: harvest:monid-connectors
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-07 (local-v5; was harvest)
specificationVersion: '0.20'
created: '2026-10-07'
modified: '2026-10-07'
tags:
- Company
- Search
- Web Search
- Crawling
- Web Scraping
- News
- AI Agents
- MCP
- Agent Tools
- Data Extraction
- Screenshots
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://s1.dev/og-home-v2.png
common:
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/s1-dev-agentic-access.yml
- type: RateLimits
  url: rate-limits/s1-dev-rate-limits.yml
- type: Plans
  url: plans/s1-dev-plans-pricing.yml
- type: Spectral
  url: rules/s1-dev-rules.yml
- type: JSONLD
  url: json-ld/s1-dev-context.jsonld
- type: Vocabulary
  url: vocabulary/s1-dev-vocabulary.yml
- type: DataModel
  url: data-model/s1-dev-data-model.yml
- type: CLI
  url: cli/s1-dev-cli.yml
- type: ChangeLog
  url: changelog/s1-dev-changelog.yml
- type: Conventions
  url: conventions/s1-dev-conventions.yml
- type: Authentication
  url: authentication/s1-dev-authentication.yml
- type: OAuthScopes
  url: scopes/s1-dev-scopes.yml
- type: Deprecation
  url: https://s1.dev/docs/changelog
- type: Lifecycle
  url: lifecycle/s1-dev-lifecycle.yml
- type: ErrorCatalog
  url: errors/s1-dev-problem-types.yml
- type: Conformance
  url: conformance/s1-dev-conformance.yml
- type: Overlay
  url: overlays/s1-dev-openapi-overlay.yaml
- type: LLMsTxt
  url: llms/s1-dev-llms.txt
- type: ToolCrosswalk
  url: mcp/s1-dev-tool-crosswalk.yml
- type: MCPServer
  url: mcp/s1-dev-mcp.yml
- type: WellKnown
  url: well-known/s1-dev-well-known.yml
- type: Hosts
  url: hosts/s1-dev-hosts.yml
- type: Vendors
  url: vendors/s1-dev-vendors.yml
- type: SDKs
  url: packages/s1-dev-packages.yml
- type: Packages
  url: packages/s1-dev-packages.yml
- type: Sandbox
  url: https://app.s1.dev/playground/ask
- type: Website
  url: https://s1.dev
- type: DeveloperPortal
  url: https://s1.dev/docs
- type: Documentation
  url: https://s1.dev/docs
- type: APIReference
  url: https://s1.dev/docs/basic/search
- type: GettingStarted
  url: https://s1.dev/docs/get-started/quickstart
- type: About
  url: https://s1.dev/about
- type: Support
  url: https://s1.dev/contact
- type: Blog
  url: https://blog.s1.dev/
- type: ChangeLog
  url: https://s1.dev/docs/changelog
- type: ChangeLog
  name: Product changelog (blog)
  url: https://blog.s1.dev/changelog
- type: GitHubOrganization
  url: https://github.com/superagents-lab
- type: GitHubOrganization
  name: Founder GitHub (linked from s1.dev)
  url: https://github.com/fatwang2
- type: Pricing
  url: https://s1.dev/pricing
- type: Login
  url: https://app.s1.dev/
- type: SignUp
  url: https://app.s1.dev/sign-up
- type: TermsOfService
  url: https://blog.s1.dev/pages/terms
- type: PrivacyPolicy
  url: https://s1.dev/privacy
- type: StatusPage
  url: https://status.search1api.com/
- type: DomainSecurity
  url: security/s1-dev-domain-security.yml
apis:
- aid: s1-dev:search1api-mcp-server
  name: Search1API MCP Server
  description: Official hosted Streamable HTTP MCP server exposing search, news, crawl, sitemap and trending tools to any
    MCP client, with OAuth 2.1 (PKCE, dynamic client registration via clerk.s1.dev) or a Search1API API key. Also published
    as the npm package search1api-mcp for local stdio use, and listed in the Claude directory as a connector and a plugin.
  humanURL: https://s1.dev/mcp-server
  baseURL: https://mcp.search1api.com/mcp
  tags:
  - MCP
  - AI Agents
  - Search
  properties:
  - type: Documentation
    url: https://s1.dev/docs/integrations/mcp
  - type: MCPServerCard
    name: MCP server card
    url: https://s1.dev/.well-known/mcp/server-card.json
  - type: SourceCode
    url: https://github.com/superagents-lab/search1api-mcp
- aid: s1-dev:search1api-blog-mcp-server
  name: Search1API Blog MCP Server
  description: Secondary MCP server on the Search1API blog host exposing four read-only content tools (search_posts, list_posts,
    get_post, list_tags); an anonymous tools/list answered with the tool schemas. Serves blog content, not the search API.
  humanURL: https://blog.s1.dev/
  baseURL: https://blog.s1.dev/mcp
  tags:
  - MCP
  - Blog
  properties:
  - type: Documentation
    url: https://blog.s1.dev/llms.txt
- aid: s1-dev:s1-dev-account-api
  name: Search1API Account API
  description: The Account API from Search1API — 1 operation(s) for account.
  humanURL: https://s1.dev/docs
  baseURL: https://api.search1api.com
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/s1-dev-account-api-openapi.yml
  - type: Documentation
    url: https://s1.dev/docs
  - type: APIReference
    url: https://s1.dev/docs/basic/search
  - type: GettingStarted
    url: https://s1.dev/docs/get-started/quickstart
  - type: Authentication
    url: https://s1.dev/docs/essentials/authentication
  - type: RateLimits
    url: https://s1.dev/docs/essentials/credits-and-limits
  - type: ErrorCatalog
    url: https://s1.dev/docs/essentials/error-handling
  - type: ChangeLog
    url: https://s1.dev/docs/changelog
  - type: LLMsTxt
    url: https://s1.dev/api/llms.txt
  - type: JSONSchema
    url: json-schema/s1-dev-ask-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-search-batch-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-news-batch-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-deepcrawl-status-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-search-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-news-response-schema.json
- aid: s1-dev:s1-dev-crawl-api
  name: Search1API Crawl API
  description: The Crawl API from Search1API — 5 operation(s) for crawl.
  humanURL: https://s1.dev/docs
  baseURL: https://api.search1api.com
  tags:
  - Crawl
  properties:
  - type: OpenAPI
    url: openapi/s1-dev-crawl-api-openapi.yml
  - type: Documentation
    url: https://s1.dev/docs
  - type: APIReference
    url: https://s1.dev/docs/basic/search
  - type: GettingStarted
    url: https://s1.dev/docs/get-started/quickstart
  - type: Authentication
    url: https://s1.dev/docs/essentials/authentication
  - type: RateLimits
    url: https://s1.dev/docs/essentials/credits-and-limits
  - type: ErrorCatalog
    url: https://s1.dev/docs/essentials/error-handling
  - type: ChangeLog
    url: https://s1.dev/docs/changelog
  - type: LLMsTxt
    url: https://s1.dev/api/llms.txt
  - type: JSONSchema
    url: json-schema/s1-dev-ask-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-search-batch-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-news-batch-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-deepcrawl-status-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-search-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-news-response-schema.json
- aid: s1-dev:s1-dev-feedback-api
  name: Search1API Feedback API
  description: The Feedback API from Search1API — 1 operation(s) for feedback.
  humanURL: https://s1.dev/docs
  baseURL: https://api.search1api.com
  tags:
  - Feedback
  properties:
  - type: OpenAPI
    url: openapi/s1-dev-feedback-api-openapi.yml
  - type: Documentation
    url: https://s1.dev/docs
  - type: APIReference
    url: https://s1.dev/docs/basic/search
  - type: GettingStarted
    url: https://s1.dev/docs/get-started/quickstart
  - type: Authentication
    url: https://s1.dev/docs/essentials/authentication
  - type: RateLimits
    url: https://s1.dev/docs/essentials/credits-and-limits
  - type: ErrorCatalog
    url: https://s1.dev/docs/essentials/error-handling
  - type: ChangeLog
    url: https://s1.dev/docs/changelog
  - type: LLMsTxt
    url: https://s1.dev/api/llms.txt
  - type: JSONSchema
    url: json-schema/s1-dev-ask-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-search-batch-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-news-batch-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-deepcrawl-status-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-search-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-news-response-schema.json
- aid: s1-dev:s1-dev-screenshot-api
  name: Search1API Screenshot API
  description: The Screenshot API from Search1API — 1 operation(s) for screenshot.
  humanURL: https://s1.dev/docs
  baseURL: https://api.search1api.com
  tags:
  - Screenshot
  properties:
  - type: OpenAPI
    url: openapi/s1-dev-screenshot-api-openapi.yml
  - type: Documentation
    url: https://s1.dev/docs
  - type: APIReference
    url: https://s1.dev/docs/basic/search
  - type: GettingStarted
    url: https://s1.dev/docs/get-started/quickstart
  - type: Authentication
    url: https://s1.dev/docs/essentials/authentication
  - type: RateLimits
    url: https://s1.dev/docs/essentials/credits-and-limits
  - type: ErrorCatalog
    url: https://s1.dev/docs/essentials/error-handling
  - type: ChangeLog
    url: https://s1.dev/docs/changelog
  - type: LLMsTxt
    url: https://s1.dev/api/llms.txt
  - type: JSONSchema
    url: json-schema/s1-dev-ask-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-search-batch-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-news-batch-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-deepcrawl-status-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-search-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-news-response-schema.json
- aid: s1-dev:s1-dev-search-api
  name: Search1API Search API
  description: The Search API from Search1API — 4 operation(s) for search.
  humanURL: https://s1.dev/docs
  baseURL: https://api.search1api.com
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/s1-dev-search-api-openapi.yml
  - type: Documentation
    url: https://s1.dev/docs
  - type: APIReference
    url: https://s1.dev/docs/basic/search
  - type: GettingStarted
    url: https://s1.dev/docs/get-started/quickstart
  - type: Authentication
    url: https://s1.dev/docs/essentials/authentication
  - type: RateLimits
    url: https://s1.dev/docs/essentials/credits-and-limits
  - type: ErrorCatalog
    url: https://s1.dev/docs/essentials/error-handling
  - type: ChangeLog
    url: https://s1.dev/docs/changelog
  - type: LLMsTxt
    url: https://s1.dev/api/llms.txt
  - type: JSONSchema
    url: json-schema/s1-dev-ask-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-search-batch-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-news-batch-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-deepcrawl-status-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-search-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-news-response-schema.json
- aid: s1-dev:s1-dev-system-api
  name: Search1API System API
  description: The System API from Search1API — 1 operation(s) for system.
  humanURL: https://s1.dev/docs
  baseURL: https://api.search1api.com
  tags:
  - System
  properties:
  - type: OpenAPI
    url: openapi/s1-dev-system-api-openapi.yml
  - type: Documentation
    url: https://s1.dev/docs
  - type: APIReference
    url: https://s1.dev/docs/basic/search
  - type: GettingStarted
    url: https://s1.dev/docs/get-started/quickstart
  - type: Authentication
    url: https://s1.dev/docs/essentials/authentication
  - type: RateLimits
    url: https://s1.dev/docs/essentials/credits-and-limits
  - type: ErrorCatalog
    url: https://s1.dev/docs/essentials/error-handling
  - type: ChangeLog
    url: https://s1.dev/docs/changelog
  - type: LLMsTxt
    url: https://s1.dev/api/llms.txt
  - type: JSONSchema
    url: json-schema/s1-dev-ask-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-search-batch-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-news-batch-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-deepcrawl-status-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-search-response-schema.json
  - type: JSONSchema
    url: json-schema/s1-dev-news-response-schema.json
x-enrichment:
  date: '2026-10-07'
  status: enriched
  artifacts_added: 52
  pass: local-v5

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