Fastino Labs

Fastino Labs is an applied research lab building production-ready small language models (SLMs) for agentic AI — structured data extraction, classification, PII detection, and safety moderation. Its Pioneer platform is an agentic fine-tuning and inference API that lets teams generate synthetic training data, fine-tune GLiNER encoder models and open-source decoder LLMs (Qwen, Llama, DeepSeek, Gemma), evaluate them against labeled datasets, and serve inference through native, OpenAI-compatible, and Anthropic-compatible endpoints. Fastino also maintains the open-source GLiNER2 schema-based information-extraction model and the GLiGuard safety-moderation model.

Fastino Labs publishes 4 APIs on the APIs.io network, including anthropic-compat API, inference API, inference-history API, and 1 more. Tagged areas include Company, Artificial Intelligence, Machine Learning, Small Language Models, and Fine-Tuning.

Fastino Labs’ developer surface includes documentation, API reference, getting-started guide, pricing, signup flow, support, engineering blog, and 25 more developer resources.

🌐 Visit website 📡 Source on GitHub

60.7/100 strong ▬ flat Agent 65/100 agent ready Full breakdown ↓
scored 2026-08-10 · rubric v0.9.1

AccessSelf serve

4 APIs 1 MCP Servers

CompanyArtificial IntelligenceMachine LearningSmall Language ModelsFine-TuningInferenceNamed Entity RecognitionInformation ExtractionLLMAgentsPII DetectionModel Training

Kin Score

Kin Score How this is scored →
scored 2026-08-10 · rubric v0.9.1

Composite quality — 60.7/100 · strong

Contract Quality 16.8 / 25

Developer Ergonomics 16.1 / 20

Commercial Clarity 8.9 / 20

Operational Transparency 8.2 / 13

Governance 1.4 / 12

Discoverability 9.3 / 10

Agent readiness — 65/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

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 3 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

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/fastino-labs: 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 4

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

MCP Servers 1

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

fastino-labs-mcp.yml

MCP SERVER

Rate Limits 1

Documented rate limits and quota policies.

Scopes 1

OAuth scopes governing access to this provider's APIs.

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

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

MCPServer

LLMsTxt

WellKnown

AgenticAccess

AgentSkill

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conventions

Lifecycle

Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 6

Authentication, authorization, and security posture

Authentication

OAuthScopes

SecurityTxt

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 3

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: fastino-labs
name: Fastino Labs
description: Fastino Labs is an applied research lab building production-ready small language models (SLMs) for agentic AI
  — structured data extraction, classification, PII detection, and safety moderation. Its Pioneer platform is an agentic fine-tuning
  and inference API that lets teams generate synthetic training data, fine-tune GLiNER encoder models and open-source decoder
  LLMs (Qwen, Llama, DeepSeek, Gemma), evaluate them against labeled datasets, and serve inference through native, OpenAI-compatible,
  and Anthropic-compatible endpoints. Fastino also maintains the open-source GLiNER2 schema-based information-extraction model
  and the GLiGuard safety-moderation model.
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://raw.githubusercontent.com/fastino-ai/mintlify-docs/main/images/pioneer-wordmark-dark.svg
url: https://raw.githubusercontent.com/api-evangelist/fastino-labs/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- insight-partners
x-tier: enriched
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Artificial Intelligence
- Machine Learning
- Small Language Models
- Fine-Tuning
- Inference
- Named Entity Recognition
- Information Extraction
- LLM
- Agents
- PII Detection
- Model Training
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: fastino-labs:fastino-labs-anthropic-compat-api
  name: Fastino Labs anthropic-compat API
  description: Anthropic-compatible endpoints. Use with the Anthropic SDK by setting base_url=https://api.pioneer.ai.
  humanURL: https://docs.pioneer.ai/api-reference
  baseURL: https://api.pioneer.ai
  tags:
  - anthropic-compat
  properties:
  - type: OpenAPI
    url: openapi/fastino-labs-anthropic-compat-api-openapi.yml
  - type: Authentication
    url: authentication/fastino-labs-authentication.yml
  - type: OAuthScopes
    url: scopes/fastino-labs-scopes.yml
  - type: ErrorCatalog
    url: errors/fastino-labs-error-codes.yml
  - type: Conventions
    url: conventions/fastino-labs-conventions.yml
  - type: DataModel
    url: data-model/fastino-labs-data-model.yml
  - type: RateLimits
    url: rate-limits/fastino-labs-rate-limits.yml
  - type: AgenticAccess
    url: agentic-access/fastino-labs-agentic-access.yml
- aid: fastino-labs:fastino-labs-inference-api
  name: Fastino Labs inference API
  description: Pioneer-native inference endpoint (encoder NER/classification/extraction and decoder text generation).
  humanURL: https://docs.pioneer.ai/api-reference
  baseURL: https://api.pioneer.ai
  tags:
  - inference
  properties:
  - type: OpenAPI
    url: openapi/fastino-labs-inference-api-openapi.yml
  - type: Authentication
    url: authentication/fastino-labs-authentication.yml
  - type: OAuthScopes
    url: scopes/fastino-labs-scopes.yml
  - type: ErrorCatalog
    url: errors/fastino-labs-error-codes.yml
  - type: Conventions
    url: conventions/fastino-labs-conventions.yml
  - type: DataModel
    url: data-model/fastino-labs-data-model.yml
  - type: RateLimits
    url: rate-limits/fastino-labs-rate-limits.yml
  - type: AgenticAccess
    url: agentic-access/fastino-labs-agentic-access.yml
- aid: fastino-labs:fastino-labs-inference-history-api
  name: Fastino Labs inference-history API
  description: List and retrieve past inference records.
  humanURL: https://docs.pioneer.ai/api-reference
  baseURL: https://api.pioneer.ai
  tags:
  - inference-history
  properties:
  - type: OpenAPI
    url: openapi/fastino-labs-inference-history-api-openapi.yml
  - type: Authentication
    url: authentication/fastino-labs-authentication.yml
  - type: OAuthScopes
    url: scopes/fastino-labs-scopes.yml
  - type: ErrorCatalog
    url: errors/fastino-labs-error-codes.yml
  - type: Conventions
    url: conventions/fastino-labs-conventions.yml
  - type: DataModel
    url: data-model/fastino-labs-data-model.yml
  - type: RateLimits
    url: rate-limits/fastino-labs-rate-limits.yml
  - type: AgenticAccess
    url: agentic-access/fastino-labs-agentic-access.yml
- aid: fastino-labs:fastino-labs-openai-compat-api
  name: Fastino Labs openai-compat API
  description: OpenAI-compatible endpoints. Use with the OpenAI SDK by setting base_url=https://api.pioneer.ai/v1.
  humanURL: https://docs.pioneer.ai/api-reference
  baseURL: https://api.pioneer.ai
  tags:
  - openai-compat
  properties:
  - type: OpenAPI
    url: openapi/fastino-labs-openai-compat-api-openapi.yml
  - type: Authentication
    url: authentication/fastino-labs-authentication.yml
  - type: OAuthScopes
    url: scopes/fastino-labs-scopes.yml
  - type: ErrorCatalog
    url: errors/fastino-labs-error-codes.yml
  - type: Conventions
    url: conventions/fastino-labs-conventions.yml
  - type: DataModel
    url: data-model/fastino-labs-data-model.yml
  - type: RateLimits
    url: rate-limits/fastino-labs-rate-limits.yml
  - type: AgenticAccess
    url: agentic-access/fastino-labs-agentic-access.yml
common:
- type: Website
  url: https://www.fastino.ai/
- type: DeveloperPortal
  url: https://docs.pioneer.ai
- type: Documentation
  url: https://docs.pioneer.ai
- type: APIReference
  url: https://docs.pioneer.ai/api-reference
- type: GettingStarted
  url: https://docs.pioneer.ai/quickstart
- type: Pricing
  url: https://docs.pioneer.ai/pricing
- type: SignUp
  url: https://agent.pioneer.ai
- type: Support
  url: https://discord.gg/e99x4szUYS
- type: Blog
  url: https://www.fastino.ai/blog
- type: GitHubOrganization
  url: https://github.com/fastino-ai
- type: StatusPage
  url: https://pioneerai.statuspage.io
- type: TermsOfService
  url: https://agent.pioneer.ai/terms
- type: PrivacyPolicy
  url: https://agent.pioneer.ai/privacy
- type: Authentication
  url: authentication/fastino-labs-authentication.yml
- type: OAuthScopes
  url: scopes/fastino-labs-scopes.yml
- type: Packages
  url: packages/fastino-labs-packages.yml
- type: SDKs
  url: packages/fastino-labs-packages.yml
- type: CLI
  url: cli/fastino-labs-cli.yml
- type: MCPServer
  url: mcp/fastino-labs-mcp.yml
- type: LLMsTxt
  url: llms/fastino-labs-llms.txt
- type: WellKnown
  url: well-known/fastino-labs-well-known.yml
- type: SecurityTxt
  url: well-known/fastino-labs-security.txt
- type: RateLimits
  url: rate-limits/fastino-labs-rate-limits.yml
- type: ErrorCatalog
  url: errors/fastino-labs-error-codes.yml
- type: Conventions
  url: conventions/fastino-labs-conventions.yml
- type: Lifecycle
  url: lifecycle/fastino-labs-lifecycle.yml
- type: Conformance
  url: conformance/fastino-labs-conformance.yml
- type: DomainSecurity
  url: security/fastino-labs-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/fastino-labs-vulnerability-disclosure.yml
- type: Security
  url: https://fastino.ai/.well-known/security.txt
- type: AgenticAccess
  url: agentic-access/fastino-labs-agentic-access.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Fastino Labs

Kin Score

APIs 4

Fastino Labs anthropic-compat API

Fastino Labs inference API

Fastino Labs inference-history API

Fastino Labs openai-compat API

MCP Servers 1

fastino-labs-mcp.yml

Rate Limits 1

Fastino Labs Rate Limits

Security Posture 3

Fastino Labs Authentication

Fastino Labs Domain Security

Fastino Labs Vulnerability Disclosure