AgentSIM

AgentSIM provides operational identity for agents hitting authentication walls. It lets you verify apps you own, run live SMS challenges, and return a code or safe stop into the agent workflow, enabling seamless integration of auth decisions into automated processes.

AgentSIM publishes 3 API contracts indexed on the APIs.io network: Agents API, Browser Access API, and Sessions API. Tagged areas include AgentSIM, Authentication, Identity, and Security.

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

AgentSIM’s developer surface includes changelog, authentication, engineering blog, signup flow, API reference, documentation, getting-started guide, and 27 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

49.8/100 developing ▬ flat Agent 49/100 agent ready Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

1 published contract 1 MCP Servers 1 Agent Skills

AgentSIMAuthentication Identity Security

Kin Score

Kin Score How this is scored →
scored 2026-11-02 · rubric v0.26.0

Composite quality — 49.8/100 · developing

Contract Quality 13.1 / 21

Developer Ergonomics 9.6 / 17

Access Clarity 5.8 / 17

Operational Transparency 3.5 / 11

Contract Governance 2.2 / 10

Discoverability 4.8 / 9

Regulatory Posture 6.0 / 15

Agent readiness — 49/100 · 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 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/agentsim-dev/"><img src="https://apis.io/badge/agentsim-dev/card.svg" alt="AgentSIM on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

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)
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
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

3 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 34.2 — up to +13.2 composite points
Contract Quality scores 61.8 — up to +9.6 composite points
Contract Governance scores 22.0 — up to +9.4 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/agentsim-dev/apis.yml: open an issue on github.com/api-evangelist/agentsim-dev 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 4

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.

Agent2Agent

measured — observed by APIs.io (conformant)

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

OpenAPI

measured — observed by APIs.io (published)

APIs 3

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

AgentSIM Agents API

The Agents API from AgentSIM — 1 operation(s) for agents.

AgentSIM Browser Access API

The Browser Access API from AgentSIM — 3 operation(s) for browser access.

AgentSIM Sessions API

The Sessions API from AgentSIM — 5 operation(s) for sessions.

MCP Servers 1

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

AgentSIM MCP Server

Remote MCP server at docs.agentsim.dev requiring an API key.

MCP SERVER

Agent Skills 1

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

agentsim

AGENT SKILL

Semantic Vocabularies 1

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

Agentsim Dev Context

3 classes · 16 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

AgentSIM API Rules

13 rules · 11 errors 1 warnings 1 info

SPECTRAL

JSON Schema 2

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

BrowserConnection

8 properties

JSON SCHEMA

Session

8 properties

JSON SCHEMA

Security Posture 3

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

Agentsim Dev Authentication

2 schemes

SECURITY

Agentsim Dev Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Agentsim Dev Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Agentsim Dev Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Agentsim Dev Agentic Access

13 operations · 8 acting · 1 human-in-the-loop

13 operations · 8 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 7

Authentication, authorization, and security posture

Security

Authentication

SecurityTxt

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Scroll for all 7

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

ChangeLog

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: agentsim-dev
name: AgentSIM
description: AgentSIM provides operational identity for agents hitting authentication walls. It lets you verify apps you own,
  run live SMS challenges, and return a code or safe stop into the agent workflow, enabling seamless integration of auth decisions
  into automated processes.
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-02'
  method: derived
image: https://agentsim.dev/opengraph-image?2a28ea6a8fd47a32
url: https://artifacts.apis.io/agentsim-dev/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-01 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-01'
modified: '2026-11-01'
tags:
- AgentSIM
- Authentication
- Identity
- Security
tags_raw:
- AgentSIM
- Auth
- Identity
- Security
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/agentsim-dev-agentic-access.yml
- type: Spectral
  url: rules/agentsim-dev-rules.yml
- type: JSONLD
  url: json-ld/agentsim-dev-context.jsonld
- type: Vocabulary
  url: vocabulary/agentsim-dev-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/agentsim-dev-data-model.yml
- type: ChangeLog
  url: changelog/agentsim-dev-changelog.yml
- type: Security
  url: security/agentsim-dev-vulnerability-disclosure.yml
- type: Authentication
  url: authentication/agentsim-dev-authentication.yml
- type: ErrorCatalog
  url: errors/agentsim-dev-problem-types.yml
- type: Conformance
  url: conformance/agentsim-dev-conformance.yml
- type: LLMsTxt
  url: llms/agentsim-dev-llms.txt
- type: AgentCard
  url: a2a/agentsim-dev-a2a.yml
- type: MCPServer
  url: mcp/agentsim-dev-mcp.yml
- type: SecurityTxt
  url: well-known/agentsim-dev-security.txt
- type: SecurityTxt
  url: well-known/agentsim-dev-docs-security.txt
- type: SecurityTxt
  url: well-known/agentsim-dev-console-security.txt
- type: WellKnown
  url: well-known/agentsim-dev-well-known.yml
- type: Hosts
  url: hosts/agentsim-dev-hosts.yml
- type: Vendors
  url: vendors/agentsim-dev-vendors.yml
- type: SDKs
  url: packages/agentsim-dev-packages.yml
- type: Packages
  url: packages/agentsim-dev-packages.yml
- type: TermsOfService
  url: https://agentsim.dev/terms
- type: PrivacyPolicy
  url: https://agentsim.dev/privacy
- type: GitHubOrganization
  url: https://github.com/agentsimdev
- type: ChangeLog
  url: https://agentsim.dev/changelog
- type: Blog
  url: https://agentsim.dev/blog
- type: SignUp
  url: https://console.agentsim.dev/sign-up
- type: APIReference
  url: https://docs.agentsim.dev/llms.txt
- type: VulnerabilityDisclosure
  url: security/agentsim-dev-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/agentsim-dev-domain-security.yml
- type: Website
  url: https://agentsim.dev/
- type: Documentation
  url: https://docs.agentsim.dev/
- type: GettingStarted
  url: https://docs.agentsim.dev/quickstart
apis:
- aid: agentsim-dev:agentsim-dev-agents-api
  name: AgentSIM Agents API
  description: The Agents API from AgentSIM — 1 operation(s) for agents.
  humanURL: https://docs.agentsim.dev/api-reference/overview
  baseURL: https://api.agentsim.dev/v1
  tags:
  - Agents
  properties:
  - type: OpenAPI
    url: openapi/agentsim-dev-agents-api-openapi.yml
  - type: JSONSchema
    url: json-schema/agentsim-dev-session-schema.json
  - type: JSONSchema
    url: json-schema/agentsim-dev-browser-connection-schema.json
- aid: agentsim-dev:agentsim-dev-browser-access-api
  name: AgentSIM Browser Access API
  description: The Browser Access API from AgentSIM — 3 operation(s) for browser access.
  humanURL: https://docs.agentsim.dev/api-reference/overview
  baseURL: https://api.agentsim.dev/v1
  tags:
  - Browser Access
  properties:
  - type: OpenAPI
    url: openapi/agentsim-dev-browser-access-api-openapi.yml
  - type: JSONSchema
    url: json-schema/agentsim-dev-session-schema.json
  - type: JSONSchema
    url: json-schema/agentsim-dev-browser-connection-schema.json
- aid: agentsim-dev:agentsim-dev-sessions-api
  name: AgentSIM Sessions API
  description: The Sessions API from AgentSIM — 5 operation(s) for sessions.
  humanURL: https://docs.agentsim.dev/api-reference/overview
  baseURL: https://api.agentsim.dev/v1
  tags:
  - Sessions
  properties:
  - type: OpenAPI
    url: openapi/agentsim-dev-sessions-api-openapi.yml
  - type: JSONSchema
    url: json-schema/agentsim-dev-session-schema.json
  - type: JSONSchema
    url: json-schema/agentsim-dev-browser-connection-schema.json
x-enrichment:
  date: '2026-11-01'
  status: enriched
  artifacts_added: 45
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

AgentSIM API — frequently asked questions

Does AgentSIM have an API?

Yes. APIs.io lists 3 APIs from AgentSIM, including AgentSIM Agents API, AgentSIM Browser Access API and AgentSIM Sessions API.

Is there an OpenAPI specification for the AgentSIM API?

Yes. APIs.io indexes 3 OpenAPI specifications for AgentSIM, each linked for download from this page.

How do I authenticate with the AgentSIM API?

AgentSIM documents its authentication (2 schemes). The details are profiled on APIs.io as Agentsim Dev Authentication.

Does AgentSIM have an MCP server?

Yes. APIs.io lists 1 MCP server for AgentSIM: Remote MCP server at docs.agentsim.dev requiring an API key.

Is the AgentSIM API ready for AI agents?

AgentSIM has a Kin Score of 49.8 out of 100 (developing) and an Agent Readiness score of 49.2 (agent-ready), scored by API Evangelist on 2026-11-02.

Work with this as data

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

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

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/agentsim-dev"

All providers

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

Every operation they expose

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

How their score was established

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

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.