# FormulaSignal

**Canonical:** https://apis.io/providers/formulasignal-com/  
**Website:** https://formulasignal.com/  
**APIs profiled:** 1

FormulaSignal provides a supplement record and monitoring service that tracks label changes, alerts users to formula updates, and maintains a personal Locker of supplement histories. Users can monitor products for changes, view detailed label histories, and receive notifications, helping them stay informed about ingredient adjustments and dosage variations.

## Kin Score — 49.4 / 100 (developing)

Scored 2026-11-13 under rubric 0.28.0.

| Facet | Score |
|---|---|
| Discoverability | 66.1 |
| Contract Quality | 67.1 |
| Contract Governance | 22.0 |
| Operational Transparency | 35.7 |
| Developer Ergonomics | 47.0 |
| Access Clarity | 44.7 |

Regulatory layer — **Health**: 14.8 (matched via tags).

## Agent readiness — 39.6 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | served |
| Idempotency | no |
| Error Semantics | derived |
| OpenAPI Examples | partial |
| Rate Limit Signal | verified |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | served |
| Protected Resource Metadata | verified |
| Dynamic Client Registration | no |
| Agentic Commerce | no |
| Pagination Ratio | na |
| Operation Distinctiveness | distinct |
| MCP Tool Quality | na |

## Access

Paid — onboarding: unknown, pricing: paid, trial: no (confidence: medium).

## APIs (8)

- **FormulaSignal Category API** — Bounded category movement.
- **FormulaSignal Context API** — Research and regulatory context for declared ingredients.
- **FormulaSignal Ledger API** — Category Ledger editions. Requires the ledger:read scope.
- **FormulaSignal Meta API** — Self-description: version, coverage, liveness.
- **FormulaSignal Products API** — Canonical identity, current state, history, economics.
- **FormulaSignal Record API** — Ask one bounded question of the Record.
- **FormulaSignal Signals API** — Confirmed, reviewed changes and the release feed.
- **FormulaSignal Watch API** — One bound account's watchlist. Requires watch:manage.

## Agentic access (1)

- **FormulaSignal Agentic Access** — 19 operations · 4 acting

## Security (2)

- **FormulaSignal Authentication** — 2 schemes
- **FormulaSignal Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **FormulaSignal Plans Pricing**

## Tags

Health, Supplements, Monitoring, Consumer App, Nutrition

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