letagentsin-com

Let Agents In provides a platform that audits how coding agents interact with APIs and developer tools. It offers free site scans, detailed integration reports, and research findings. Users can run audits, view categories, pricing, and access API documentation for integration. The service is founded by Krystian Gwizdała and aims to improve agent integration reliability across the ecosystem.

letagentsin-com publishes 8 API contracts indexed on the APIs.io network, including C API, Corpus.csv API, Corpus.json API, and 5 more. Tagged areas include AI, Agent Audits, Developer Tools, API Testing, and Integration.

The letagentsin-com catalog on APIs.io includes 1 Spectral governance ruleset.

letagentsin-com’s developer surface includes documentation, API reference, pricing, getting-started guide, and 16 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

42.2/100 developing Agent 37/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 MCP Servers 1 Agent Skills

AIAgent AuditsDeveloper Tools API Testing Integration

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 42.2/100 · developing

Contract Quality 8.8 / 21

Developer Ergonomics 6.0 / 17

Access Clarity 6.8 / 17

Operational Transparency 2.1 / 11

Contract Governance 6.7 / 10

Discoverability 4.5 / 9

Regulatory Posture 3.4 / 15

Agent readiness — 37/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 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 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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
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)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

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 41.6 — up to +14.6 composite points
Developer Ergonomics scores 35.0 — up to +13.0 composite points
Access Clarity scores 40.0 — up to +12.0 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/letagentsin-com/apis.yml: open an issue on github.com/api-evangelist/letagentsin-com 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 →

APIs 8

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

Let Agents In API

Scan a domain via the Let Agents In API, returning a scorecard and detailed check results.

letagentsin-com C API

The C API from letagentsin-com — 1 operation(s) for c.

letagentsin-com Corpus.csv API

The Corpus.csv API from letagentsin-com — 1 operation(s) for corpus.csv.

letagentsin-com Corpus.json API

The Corpus.json API from letagentsin-com — 1 operation(s) for corpus.json.

letagentsin-com MCP API

The Mcp API from letagentsin-com — 1 operation(s) for mcp.

letagentsin-com Scan API

The Scan API from letagentsin-com — 2 operation(s) for scan.

letagentsin-com Visibility API

The Visibility API from letagentsin-com — 1 operation(s) for visibility.

letagentsin-com Watch API

The Watch API from letagentsin-com — 1 operation(s) for watch.

Scroll for all 8

MCP Servers 1

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

letagentsin-com MCP Server

Remote MCP server at letagentsin.com.

MCP SERVER

Agent Skills 1

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

scan-domain

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Letagentsin Com Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Letagentsin Com Rate Limits

2 limits

RATE LIMITS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

letagentsin-com API Rules

9 rules · 7 errors 1 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.

Letagentsin Com Openapi Overlay

0 actions · update

UNRECORDED

Security Posture 2

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

Letagentsin Com Authentication

0 schemes

SECURITY

Letagentsin Com Domain Security

TLSv1.3 · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Letagentsin Com Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Letagentsin Com Agentic Access

9 operations · 6 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

ErrorCatalog

ErrorCatalog

Conformance

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Image

Image

Source (apis.yml)

aid: letagentsin-com
name: letagentsin-com
description: Let Agents In provides a platform that audits how coding agents interact with APIs and developer tools. It offers
  free site scans, detailed integration reports, and research findings. Users can run audits, view categories, pricing, and
  access API documentation for integration. The service is founded by Krystian Gwizdała and aims to improve agent integration
  reliability across the ecosystem.
url: https://artifacts.apis.io/letagentsin-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- AI
- Agent Audits
- Developer Tools
- API Testing
- Integration
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/letagentsin-com-agentic-access.yml
- type: RateLimits
  url: rate-limits/letagentsin-com-rate-limits.yml
- type: Plans
  url: plans/letagentsin-com-plans-pricing.yml
- type: Spectral
  url: rules/letagentsin-com-rules.yml
- type: AgentSkill
  url: skills/_index.yml
- type: ErrorCatalog
  url: errors/letagentsin-com-problem-types.yml
- type: Conformance
  url: conformance/letagentsin-com-conformance.yml
- type: LLMsTxt
  url: llms/letagentsin-com-llms.txt
- type: ToolCrosswalk
  url: mcp/letagentsin-com-tool-crosswalk.yml
- type: MCPServer
  url: mcp/letagentsin-com-mcp.yml
- type: WellKnown
  url: well-known/letagentsin-com-well-known.yml
- type: Hosts
  url: hosts/letagentsin-com-hosts.yml
- type: PrivacyPolicy
  url: https://letagentsin.com/privacy
- type: DomainSecurity
  url: security/letagentsin-com-domain-security.yml
- type: Website
  url: https://letagentsin.com/
- type: Documentation
  url: https://letagentsin.com/docs
- type: APIReference
  url: https://letagentsin.com/docs
- type: Pricing
  url: https://letagentsin.com/pricing
- type: GettingStarted
  url: https://letagentsin.com/#scan
- type: Image
  url: https://letagentsin.com/icon.svg?icon.1nofz5_2t64-q.svg
apis:
- aid: letagentsin-com:letagentsin-com-api
  name: Let Agents In API
  description: Scan a domain via the Let Agents In API, returning a scorecard and detailed check results.
  humanURL: https://letagentsin.com/docs
  tags:
  - Scan
  tags_raw:
  - scan
  properties:
  - type: Documentation
    url: https://letagentsin.com/docs
  - type: APIReference
    url: https://letagentsin.com/docs
- aid: letagentsin-com:letagentsin-com-c-api
  name: letagentsin-com C API
  description: The C API from letagentsin-com — 1 operation(s) for c.
  humanURL: https://letagentsin.com/docs
  baseURL: https://letagentsin.com
  tags:
  - C
  properties:
  - type: OpenAPI
    url: openapi/letagentsin-com-c-api-openapi.yml
- aid: letagentsin-com:letagentsin-com-corpus-csv-api
  name: letagentsin-com Corpus.csv API
  description: The Corpus.csv API from letagentsin-com — 1 operation(s) for corpus.csv.
  humanURL: https://letagentsin.com/docs
  baseURL: https://letagentsin.com
  tags:
  - Corpus.csv
  properties:
  - type: OpenAPI
    url: openapi/letagentsin-com-corpus-csv-api-openapi.yml
- aid: letagentsin-com:letagentsin-com-corpus-json-api
  name: letagentsin-com Corpus.json API
  description: The Corpus.json API from letagentsin-com — 1 operation(s) for corpus.json.
  humanURL: https://letagentsin.com/docs
  baseURL: https://letagentsin.com
  tags:
  - Corpus.json
  properties:
  - type: OpenAPI
    url: openapi/letagentsin-com-corpus-json-api-openapi.yml
- aid: letagentsin-com:letagentsin-com-mcp-api
  name: letagentsin-com MCP API
  description: The Mcp API from letagentsin-com — 1 operation(s) for mcp.
  humanURL: https://letagentsin.com/docs
  baseURL: https://letagentsin.com
  tags:
  - Mcp
  properties:
  - type: OpenAPI
    url: openapi/letagentsin-com-mcp-api-openapi.yml
- aid: letagentsin-com:letagentsin-com-scan-api
  name: letagentsin-com Scan API
  description: The Scan API from letagentsin-com — 2 operation(s) for scan.
  humanURL: https://letagentsin.com/docs
  baseURL: https://letagentsin.com
  tags:
  - Scan
  properties:
  - type: OpenAPI
    url: openapi/letagentsin-com-scan-api-openapi.yml
- aid: letagentsin-com:letagentsin-com-visibility-api
  name: letagentsin-com Visibility API
  description: The Visibility API from letagentsin-com — 1 operation(s) for visibility.
  humanURL: https://letagentsin.com/docs
  baseURL: https://letagentsin.com
  tags:
  - Visibility
  properties:
  - type: OpenAPI
    url: openapi/letagentsin-com-visibility-api-openapi.yml
- aid: letagentsin-com:letagentsin-com-watch-api
  name: letagentsin-com Watch API
  description: The Watch API from letagentsin-com — 1 operation(s) for watch.
  humanURL: https://letagentsin.com/docs
  baseURL: https://letagentsin.com
  tags:
  - Watch
  properties:
  - type: OpenAPI
    url: openapi/letagentsin-com-watch-api-openapi.yml
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 32
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

letagentsin-com API — frequently asked questions

Does letagentsin-com have an API?

Yes. APIs.io lists 8 APIs from letagentsin-com, including Let Agents In API, letagentsin-com C API and letagentsin-com Corpus.csv API, and 5 more.

Is there an OpenAPI specification for the letagentsin-com API?

Yes. APIs.io indexes 7 OpenAPI specifications for letagentsin-com, each linked for download from this page.

How do I authenticate with the letagentsin-com API?

letagentsin-com documents its authentication (0 schemes). The details are profiled on APIs.io as Letagentsin Com Authentication.

How much does the letagentsin-com API cost?

APIs.io lists 2 pricing plans for letagentsin-com, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does letagentsin-com have an MCP server?

Yes. APIs.io lists 1 MCP server for letagentsin-com: Remote MCP server at letagentsin.com.

Is the letagentsin-com API ready for AI agents?

letagentsin-com has a Kin Score of 42.2 out of 100 (developing) and an Agent Readiness score of 36.6 (agent-ready), scored by API Evangelist on 2026-10-31.

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