> ## Documentation Index > Fetch the complete documentation index at: https://docs.zespan.com/llms.txt > Use this file to discover all available pages before exploring further. # The raw dependency graph for a project > Returns every node and edge in the project's dependency graph, optionally filtered to a subset of node kinds — the same graph `GET /v1/projects/{id}/blast-radius` traverses from a single root, but unfiltered by root. Sized for a future graph visualization; nothing in the dashboard renders it today. Authenticated the same way as `GET /v1/projects/{id}/blast-radius` (dashboard session, `dashboard:read`). ## OpenAPI ````yaml /api-reference/openapi.yaml get /v1/projects/{id}/graph openapi: 3.1.0 info: title: Zespan Public API version: 1.0.0 description: > The Zespan Public API covers the endpoints that customers call directly or through the Zespan SDKs: trace ingestion (native and OpenTelemetry), prompt management, datasets and dataset runs, and the runtime guardrails check. All endpoints authenticate with a project API key sent in the `x-api-key` header. Create and manage API keys from the project settings in the Zespan dashboard. servers: - url: https://api.zespan.com description: Zespan production API security: - ApiKeyAuth: [] tags: - name: Ingestion description: Send traces and events to Zespan. - name: OpenTelemetry description: OTLP-compatible ingestion endpoints. - name: Prompts description: Manage versioned prompts and their labels, tags, and folders. - name: Datasets description: Read datasets and manage dataset runs used for experiments and scoring. - name: Guardrails description: Runtime guardrail evaluation. - name: SDK / CLI support description: > Small support endpoints consumed by the SDKs and @zespan/cli rather than called directly by application code. - name: Blast Radius description: > The prompt/agent/model/policy/evaluator/alert dependency graph backing the pre-release impact check and the evaluator-delete gate in the dashboard. Session-authenticated (dashboard cookie), not `x-api-key`. - name: Outcomes description: > Report business outcomes (a deflected ticket, an avoided refund, an SLA met) attributed to a trace, and read them back summarized by agent or model, joined to real trace cost. Backs the Value dashboard page. The ingest endpoint is `x-api-key`-authenticated like the rest of ingestion; the two read endpoints are session-authenticated (dashboard cookie) like Blast Radius. - name: Compliance description: > Generate audit-ready evidence documents (a per-agent Compliance Card, or SOC 2 control evidence) from recorded platform data, and re-verify a generated document's citations against live data. Session-authenticated (dashboard cookie), not `x-api-key`, gated by `compliance:read` / `compliance:generate` permissions and the Pro plan or above (the framework listing is the one exception — no project scope and no plan gate, since a customer deciding whether to upgrade needs to see what they'd get). - name: Models description: > Per-model usage, cost, latency, and error-rate rollups for a project, including the lifecycle overlay described under the Model Lifecycle tag. Session-authenticated (dashboard cookie), not `x-api-key`, gated by `dashboard:read`. - name: Model Lifecycle description: > Findings from the daily model deprecation scan, which matches models a project actually calls against a curated, bundled catalogue of provider-announced deprecation and retirement dates. Every figure on a finding (call volume, cost, affected agents/prompts, cost comparison against a named successor) is measured from real trace data — there is no quality-delta or regression-comparison endpoint, because nothing in this API invokes a model on the caller's behalf. Session-authenticated (dashboard cookie), not `x-api-key`: reading findings and the catalogue requires `dashboard:read`, dismissing a finding requires `alerts:manage`. paths: /v1/projects/{id}/graph: get: tags: - Blast Radius summary: The raw dependency graph for a project description: > Returns every node and edge in the project's dependency graph, optionally filtered to a subset of node kinds — the same graph `GET /v1/projects/{id}/blast-radius` traverses from a single root, but unfiltered by root. Sized for a future graph visualization; nothing in the dashboard renders it today. Authenticated the same way as `GET /v1/projects/{id}/blast-radius` (dashboard session, `dashboard:read`). operationId: getBlastRadiusGraph parameters: - name: id in: path required: true schema: type: string format: uuid description: Project id. - name: kinds in: query schema: type: string description: > Comma-separated node kinds to include (e.g. `prompt,agent`). Omit to return every kind. example: prompt,agent - name: windowDays in: query schema: type: integer minimum: 1 maximum: 90 default: 30 description: Lookback window for observed (ClickHouse) call volume and cost. responses: '200': description: The full (optionally kind-filtered) graph. content: application/json: schema: $ref: '#/components/schemas/BlastRadiusGraphResponse' '403': description: >- Not authenticated with a dashboard session, or lacks `dashboard:read`. content: application/json: schema: $ref: '#/components/schemas/Error' security: [] components: schemas: BlastRadiusGraphResponse: type: object properties: nodes: type: array items: $ref: '#/components/schemas/BlastRadiusGraphNode' edges: type: array items: $ref: '#/components/schemas/BlastRadiusGraphEdge' computedAt: type: string format: date-time required: - nodes - edges - computedAt Error: type: object properties: error: type: string description: Human-readable error message. example: Unauthorized code: type: string description: Machine-readable error code, when present. example: rate_limit_exceeded required: - error BlastRadiusGraphNode: type: object properties: id: type: string description: '`:` — stable across rebuilds.' example: prompt:support-reply kind: $ref: '#/components/schemas/BlastRadiusNodeKind' name: type: string example: support-reply href: type: string description: Relative deep link into the dashboard. example: prompts/support-reply environments: type: array items: type: string description: > Environment slugs this node is known to be associated with. An empty array means genuinely unknown, never "not production." example: - prod - staging required: - id - kind - name - href - environments BlastRadiusGraphEdge: type: object properties: from: type: string description: The upstream node id. `to` depends on `from`. to: type: string description: The downstream node id — what would be affected if `from` changed. origin: type: string enum: - declared - observed description: > `declared` — configured in your project (Postgres). `observed` — actually called, from real ClickHouse trace data in the queried window. callVolume: type: number description: Call count over the window, for `observed` edges. costUsd: type: number description: Cost in USD over the window, for `observed` edges. lastSeenAt: type: string format: date-time required: - from - to - origin BlastRadiusNodeKind: type: string enum: - prompt - agent - policy - evaluator - dataset - model - tool - alert description: > `tool` is a reserved value in the type — no node of this kind is emitted yet (MCP tool calls aren't part of the graph today). securitySchemes: ApiKeyAuth: type: apiKey in: header name: x-api-key description: >- Project API key. Manage keys in the Zespan dashboard under project settings. ````