# Trajectory Training API

**Canonical:** https://apis.io/apis/trajectory/trajectory-training-api/  
**Provider:** Trajectory — https://apis.io/providers/trajectory/  
**Base URL:** https://api.trajectory.ai  
**Documentation:** https://api.trajectory.ai/docs

Trajectory Training API is one of 28 APIs that [Trajectory](https://apis.io/providers/trajectory/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 6 JSON Schema definitions. Tagged areas include training. The published artifact set on APIs.io includes an OpenAPI specification and 6 JSON Schemas.

The training API from Trajectory — 17 operation(s) for training.

## Operations (18)

| Method | Path | Summary |
|---|---|---|
| POST | `/api/v1/train/{run_id}/samples` | Add Training Samples Route |
| POST | `/api/v1/train` | Create Training Run Route |
| GET | `/api/v1/train/options` | Get Training Options Route |
| GET | `/api/v1/train/{bench_id}/runs` | List Training Runs Route |
| GET | `/api/v1/train/{run_id}` | Get Training Run Route |
| DELETE | `/api/v1/train/{run_id}` | Delete Training Run Route |
| PATCH | `/api/v1/train/{training_run_id}` | Update Training Run Route |
| GET | `/api/v1/train/{run_id}/progress` | Get Training Progress Route |
| GET | `/api/v1/train/{run_id}/step/trainer-reward-by-step` | Get Trainer Rewards By Step |
| GET | `/api/v1/train/{run_id}/step/held-out-reward-by-step` | Get Held Out Rewards By Step |
| GET | `/api/v1/train/{run_id}/step-summaries` | Get Training Step Summaries |
| GET | `/api/v1/train/{run_id}/steps/{step}/trajectories` | List Training Step Trajectories |
| GET | `/api/v1/train/{run_id}/steps/{step}/group-stats` | Get Training Step Group Stats Route |
| GET | `/api/v1/train/{run_id}/steps/{step}/groups` | List Training Step Groups Route |
| GET | `/api/v1/train/{run_id}/steps/{step}/trajectory-rewards` | Get Training Trajectory Rewards Route |
| POST | `/api/v1/train/{run_id}/cancel` | Cancel Training Run Route |
| GET | `/api/v1/train/{run_id}/checkpoints` | List Training Checkpoints Route |
| GET | `/api/v1/train/{run_id}/checkpoints/{step_index}` | Get Training Checkpoint Route |

## Machine-readable artifacts (7)

- **OpenAPI** — https://artifacts.apis.io/trajectory/openapi/trajectory-training-api-openapi.yml
- **JSONSchema** — https://artifacts.apis.io/trajectory/json-schema/trajectory-experiment-detail-schema.json
- **JSONSchema** — https://artifacts.apis.io/trajectory/json-schema/trajectory-eval-run-schema.json
- **JSONSchema** — https://artifacts.apis.io/trajectory/json-schema/trajectory-deployment-schema.json
- **JSONSchema** — https://artifacts.apis.io/trajectory/json-schema/trajectory-trajectory-schema.json
- **JSONSchema** — https://artifacts.apis.io/trajectory/json-schema/trajectory-start-eval-request-schema.json
- **JSONSchema** — https://artifacts.apis.io/trajectory/json-schema/trajectory-create-run-request-schema.json

## Other Trajectory APIs (12)

- [Trajectory Agents API](https://apis.io/apis/trajectory/trajectory-agents-api/)
- [Trajectory Aperture API](https://apis.io/apis/trajectory/trajectory-aperture-api/)
- [Trajectory API Keys API](https://apis.io/apis/trajectory/trajectory-api-keys-api/)
- [Trajectory Artifacts API](https://apis.io/apis/trajectory/trajectory-artifacts-api/)
- [Trajectory Auth API](https://apis.io/apis/trajectory/trajectory-auth-api/)
- [Trajectory Benchmark Ingestion API](https://apis.io/apis/trajectory/trajectory-benchmark-ingestion-api/)
- [Trajectory Benchmarks API](https://apis.io/apis/trajectory/trajectory-benchmarks-api/)
- [Trajectory Billing API](https://apis.io/apis/trajectory/trajectory-billing-api/)
- [Trajectory Deployments API](https://apis.io/apis/trajectory/trajectory-deployments-api/)
- [Trajectory Diagnostics API](https://apis.io/apis/trajectory/trajectory-diagnostics-api/)
- [Trajectory Eval API](https://apis.io/apis/trajectory/trajectory-eval-api/)
- [Trajectory Experiments API](https://apis.io/apis/trajectory/trajectory-experiments-api/)

## Tags

training

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/trajectory/trajectory-training-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/trajectory/.