# Figure Eight

**Canonical:** https://apis.io/providers/figure-eight/  
**APIs profiled:** 13

Figure Eight (formerly CrowdFlower, and originally Dolores Labs) was a human-in-the-loop machine learning and artificial intelligence company founded in San Francisco in 2007 by Lukas Biewald and Chris Van Pelt. Its platform turned unlabeled text, image, audio, and video into high-quality AI training data by combining automation with a distributed contributor workforce. The company exposed a RESTful, key-authenticated JSON API for programmatically creating, configuring, launching, and monitoring annotation jobs and multi-step workflows, and for downloading aggregated judgments and reports. Figure Eight was acquired by Appen in March 2019 for up to $300M; by 2020 its assets were fully integrated into Appen and the API is now served as the Appen Platform API at api.appen.com. This profile captures that surviving API surface. figure-eight.com now redirects to appen.com.

## Kin Score — 32.0 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 32.0).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 60.3 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 32.1 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 33.7 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | documented |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | partial |
| Rate Limit Signal | no |
| Event Surface Described | derived |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (13)

- **Figure Eight Account Info API** — Manage account info.
- **Figure Eight Job Create/Update API** — Create and update jobs.
- **Figure Eight Job Ontology API** — Read and Update the Ontology for a job
- **Figure Eight Job Results API** — Request rows, judgments, and reports.
- **Figure Eight Job Status API** — Control job status.
- **Figure Eight Manage Job Data API** — Load data to jobs and work with that data.
- **Figure Eight Manage Job Settings API** — Manage various job settings.
- **Figure Eight Monitor Contributors API** — Monitor contributor status and settings.
- **Figure Eight Workflow Data Upload/Download API** — Upload data to run through a Workflow. Download reports.
- **Figure Eight Workflow Filter Rules API** — Rules for routing data
- **Figure Eight Workflow Step Routes API** — Manage Workflow Step Routes
- **Figure Eight Workflow Steps API** — Manage Workflow Steps
- **Figure Eight Workflows API** — Copy, launch, pause and resume workflows, check status and configuration values

## MCP servers (1)

- **Figure Eight MCP Server**

## Security (2)

- **Figure Eight Authentication** — apiKey · 1 scheme
- **Figure Eight Domain Security** — TLSv1.3 · DMARC

## Tags

Company, Artificial Intelligence, Machine-Learning, Data Labeling, Data Annotation, Training Data, Human-in-the-Loop, Crowdsourcing, Acquired

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/figure-eight/). Scores are computed from the provider's own public artifacts under a published rubric.