# Rainbow

**Canonical:** https://apis.io/providers/riverse/  
**Website:** https://rainbowstandard.io/  
**APIs profiled:** 0

Rainbow — formerly Riverse, whose riverse.io domain now 301s to rainbowstandard.io — is a carbon crediting programme and registry that certifies and issues Rainbow Carbon Credits (RCCs) from engineered carbon removal and greenhouse-gas reduction projects across biochar, BiCRS/BioCCS, enhanced rock weathering, ex-situ mineralization, biogas from anaerobic digestion, biobased construction materials, battery second life and electronics refurbishment. The programme is ICVCM Core-Carbon-Principles approved, ICROA endorsed, approved as a Frontier credit issuer, and runs EU CRCF-compliant plus CORSIA and Paris Agreement Article 6 crediting tracks. It operates two platforms: Arc (arc.rainbowstandard.io), the project-developer certification and MRV platform launched October 2025, and the public Rainbow Registry (registry.rainbowstandard.io) where every project, credit block, serial number and retirement is published. Its public surface is a 163-page GitBook documentation hub of standard rules, procedures, methodologies, fees and governance policies, served with a real llms.txt and a Content-Signal AI-usage declaration. No OpenAPI, AsyncAPI, GraphQL SDL, SDK, MCP server or A2A agent card is served on any Rainbow host; the only public acknowledgement that an API exists at all is a single line in the published fee schedule confirming that API connections carry no additional cost.

## Kin Score — 34.3 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 34.3).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 22.0 |
| Contract Governance | 22.0 |
| Operational Transparency | 34.2 |
| Developer Ergonomics | 28.6 |
| Commercial Clarity | 78.9 |
| Access Clarity | 78.9 |

## Agent readiness — 5.6 (human-only)

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

## Access

Customer-only — onboarding: unknown, pricing: paid, trial: no (confidence: medium).

## Security (3)

- **Riverse Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC
- **Riverse Vulnerability Disclosure** — security.txt · contact published
- **Riverse Trust Center** — note, programme, information_security

## Plans (1)

- **Riverse Plans Pricing**

## Tags

Company, Carbon Credits, Carbon Removal, Carbon Markets, Sustainability, Climate, Registry, Certification, MRV, Verification, Biochar

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