FlowCastle

FlowCastle provides a visual builder for Telegram bots, enabling businesses to create AI‑powered bots with payments, CRM integration, and live chat. Users can launch a bot in minutes, customize flows, and scale with analytics. The platform offers free plans, detailed documentation, pricing tiers, and a roadmap for future features.

FlowCastle is listed with 2 APIs on the APIs.io network. Tagged areas include Company, Bot Builder, Telegram, No-Code, and Artificial Intelligence.

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

FlowCastle’s developer surface includes documentation, pricing, engineering blog, and 17 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

28.7/100 thin Agent 28/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemium

2 APIs

Company Bot Builder Telegram No-Code Artificial Intelligence

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 28.7/100 · thin

Contract Quality 3.8 / 21

Developer Ergonomics 4.0 / 17

Access Clarity 8.7 / 17

Operational Transparency 0.5 / 11

Contract Governance 2.2 / 10

Discoverability 4.9 / 9

Regulatory Posture 2.6 / 15

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 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 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 0 / 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/.

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

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
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) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →

10 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 17.8 — up to +20.6 composite points Ask about this →
Developer Ergonomics scores 23.8 — up to +15.2 composite points Ask about this →
Operational Transparency scores 4.8 — up to +12.4 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/flowcastle-ai/apis.yml: open an issue on github.com/api-evangelist/flowcastle-ai 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 1

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.

Dynamic Client Registration

measured — observed by APIs.io (published)

APIs 2

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

FlowCastle API

API for FlowCastle visual Telegram bot builder

FlowCastle API

FlowCastle API as documented publicly: 12 operations. Contract generated from the documentation by API Evangelist (2026-11-08); not the provider's own document.

FlowCastle API pricing

Prices published by FlowCastle, read 2026-11-08 from dashboard.flowcastle.ai/pricing.

Plan	Price
Free	$0/mo
Starter	$7.17/mo
Growth	$23.17/mo
Business	$63.17/mo
Scale	Contact sales

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

FlowCastle Plans Pricing

5 plans

PLANS

Semantic Vocabularies 1

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

Flowcastle Ai Context

1 classes · 7 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

FlowCastle API Rules

32 rules · 30 error-severity 1 warn-severity 1 info-severity

SPECTRAL

JSON Schema 1

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

GetApiSdkV1ManifestResponse

7 properties

JSON SCHEMA

Security Posture 1

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

FlowCastle Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Roadmap

Roadmap

HelpCenter

HelpCenter

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

PrivacyPolicy

TermsOfService

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: flowcastle-ai
name: FlowCastle
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  probe_state: unreadable
  source:
  - plans
  - security
  generated: '2026-11-13'
  method: derived
image: https://flowcastle.ai/og-image.png
description: FlowCastle provides a visual builder for Telegram bots, enabling businesses to create AI‑powered bots with payments,
  CRM integration, and live chat. Users can launch a bot in minutes, customize flows, and scale with analytics. The platform
  offers free plans, detailed documentation, pricing tiers, and a roadmap for future features.
url: https://artifacts.apis.io/flowcastle-ai/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-08 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-08'
modified: '2026-11-08'
tags:
- Company
- Bot Builder
- Telegram
- No-Code
- Artificial Intelligence
tags_raw:
- Company
- BotBuilder
- Telegram
- NoCode
- AI
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/flowcastle-ai-plans-pricing.yml
- type: Spectral
  url: rules/flowcastle-ai-rules.yml
- type: JSONLD
  url: json-ld/flowcastle-ai-context.jsonld
- type: Vocabulary
  url: vocabulary/flowcastle-ai-vocabulary.yml
- type: DataModel
  url: data-model/flowcastle-ai-data-model.yml
- type: Conformance
  url: conformance/flowcastle-ai-conformance.yml
- type: LLMsTxt
  url: llms/flowcastle-ai-llms.txt
- type: WellKnown
  url: well-known/flowcastle-ai-well-known.yml
- type: Hosts
  url: hosts/flowcastle-ai-hosts.yml
- type: SDKs
  url: packages/flowcastle-ai-packages.yml
- type: Packages
  url: packages/flowcastle-ai-packages.yml
- type: DomainSecurity
  url: security/flowcastle-ai-domain-security.yml
- type: Website
  url: https://flowcastle.ai/
- type: Documentation
  url: https://flowcastle.ai/docs
- type: Roadmap
  url: https://flowcastle.ai/roadmap
- type: Pricing
  url: https://flowcastle.ai/pricing
- type: HelpCenter
  url: https://flowcastle.ai/help
- type: PrivacyPolicy
  url: https://flowcastle.ai/privacy
- type: TermsOfService
  url: https://flowcastle.ai/terms
- type: Blog
  url: https://flowcastle.ai/blog
apis:
- name: FlowCastle API
  description: API for FlowCastle visual Telegram bot builder
  humanURL: https://flowcastle.ai/docs
  baseURL: null
  aid: flowcastle-ai:flowcastle-api
- aid: flowcastle-ai:flowcastle-ai-api
  name: FlowCastle API
  description: 'FlowCastle API as documented publicly: 12 operations. Contract generated from the documentation by API Evangelist
    (2026-11-08);

    not the provider''s own document.'
  humanURL: https://github.com/FlowCastle/flowcastle-sdk/blob/main/docs/CROSS_FRAMEWORK_TELEGRAM_SDK_PLAN.md
  baseURL: https://my.flowcastle.ai
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/flowcastle-ai-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/flowcastle-ai-get-api-sdk-v1-manifest-response-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Documentation is public but no OpenAPI, AsyncAPI, GraphQL schema or other machine‑readable contract could be retrieved.
  evidence:
  - url: https://flowcastle.ai/docs
    status: 200
  checked: '2026-11-08'
x-enrichment:
  date: '2026-11-08'
  status: enriched
  artifacts_added: 21
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

FlowCastle API — frequently asked questions

Does FlowCastle have an API?

Yes. APIs.io lists 2 APIs from FlowCastle, including FlowCastle API and FlowCastle API.

Is there an OpenAPI specification for the FlowCastle API?

Yes. APIs.io indexes 1 OpenAPI specification for FlowCastle, each linked for download from this page.

How much does the FlowCastle API cost?

FlowCastle publishes its prices; its Free plan is $0/mo as of 2026-11-08. APIs.io lists 5 pricing plans for FlowCastle, with each plan's price, limits and inclusions under Pricing on this page.

Is the FlowCastle API ready for AI agents?

FlowCastle has a Kin Score of 28.7 out of 100 (thin) and an Agent Readiness score of 27.5 (agent-aware), scored by API Evangelist on 2026-11-13.

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