---
title: "C2PA AI/ML Assertion Decoder"
method: POST
path: "/v1/tools/decode_c2pa_aiml_assertions"
tags: ["compliance_control", "c2pa", "ai-provenance", "digitalsourcetype", "training-opt-out", "mcp:decode_c2pa_aiml_assertions"]
---

# C2PA AI/ML Assertion Decoder

`POST /v1/tools/decode_c2pa_aiml_assertions`

## Request

- Base URL: `https://ainumbers.co`
- URL: `https://ainumbers.co/v1/tools/decode_c2pa_aiml_assertions`
- Auth: none declared

Decodes AI/ML provenance assertions off a C2PA manifest's assertion array: ALL entries in every c2pa.actions/c2pa.actions.v2 assertion (a manifest can carry a created -> edited -> published history; this reads the whole chain, not just the first action), the full IPTC digitalsourcetype NewsCodes vocabulary (raw code always surfaced, an unrecognized code is never silently dropped), and c2pa.ai_training / c2pa.ai_generative_training training-and-data-mining opt-out assertions (training_mining_opt_out: true/false/not_asserted, read only from an explicit boolean, never inferred). Reports assertions only -- never adjudicates whether an assertion is true, and absence of an AI/ML assertion means nothing. Reuses art-123's assertion-array input shape as a sibling stage; zero edits to art-123 or art-361. Zero network calls, zero PII.

**Tool URL:** https://ainumbers.co/chaingraph/art-597-c2pa-aiml-assertion-decoder.html

## Request body

- object
  - `assertions` object[]

## Response `200`

Successful tool execution result

- object
  - `actions` object[]
    - `action` string, nullable
    - `digital_source_type` string, nullable
    - `when` string, nullable
    - `software_agent` string, nullable
  - `digital_source_type_summary` string[]
  - `training_mining_opt_out` union
    - boolean
    - string
  - `unrecognized_source_types` string[]
  - `note` string

---

[API](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite.md) · [All operations](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/llms.txt) · [OpenAPI document](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/revisions/b462e4f5bb28?raw)