FeedOracle Technologies L2 API

Layer 2 fee oracle (Public)

Documentation GitHub OpenAPI

Operations 4

Each operation below carries the questions people ask an LLM about it and the instructions they give an agent to run it. Generated by API Evangelist overlay

GET /api/v2/l2/cheapest Find the cheapest healthy L2 chain · Get cheapest healthy L2 chain #

Ask an LLM

“Which layer 2 has the lowest gas cost right now?”

“Can I get a ranking of L2s by gas cost with a recommendation?”

Tell an agent

Find the cheapest healthy L2.

Rank layer 2 chains by gas cost.

GET /api/v2/l2/health Check L2 sequencer health · L2 sequencer health status #

Ask an LLM

“Are the Arbitrum, Optimism and Base sequencers up?”

“Which L2 sequencers are having problems?”

Tell an agent

Check L2 sequencer health.

Tell me if any of the eight L2 sequencers is down.

GET /api/v2/l2/all Get data for all L2 chains · All L2 chain data #

Ask an LLM

“Can I get all the layer 2 chain data in one response?”

“What metrics are tracked for every L2?”

Tell an agent

Get all L2 chain data.

Show the full dataset for every tracked L2.

GET /api/v2/l2/status/{chain} Get one L2 chain's status · Single L2 chain status #

Ask an LLM

“Can I check the status of a single L2 chain?”

“Is one particular layer 2 healthy?”

Tell an agent

Get the status of L2 chain {chain}.

Check whether {chain} is healthy.

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OpenAPI Specification

openapi: 3.2.0
info:
  title: FeedOracle Compliance Evidence L2 API
  version: 8.4.1+truthrepair.r1
  description: 'FeedOracle Compliance Evidence Infrastructure — 44 MCP servers, 590+ evidence tools across 17 data sources. DORA, MiCA, AMLR and CSRD compliance evidence APIs. ES256K-signed responses, blockchain-anchored. Canonical metrics: https://feedoracle.io/data/feedoracle-metrics.json.'
  contact:
    email: support@feedoracle.io
    url: https://feedoracle.io/contact.html
  license:
    name: Proprietary
  termsOfService: https://feedoracle.io/terms.html
servers:
- url: https://api.feedoracle.io
  description: Production
security: []
tags:
- name: L2
  description: Layer 2 fee oracle (Public)
paths:
  /api/v2/l2/cheapest:
    get:
      tags:
      - L2
      operationId: getL2Cheapest
      summary: Get cheapest healthy L2 chain
      description: Returns recommended L2 with full ranking by gas cost
      responses:
        '200':
          description: L2 ranking with gas prices in USD
  /api/v2/l2/health:
    get:
      tags:
      - L2
      operationId: getL2Health
      summary: L2 sequencer health status
      description: Health for 8 L2 chains (ARB, OP, BASE, etc.)
      responses:
        '200':
          description: Health status array
  /api/v2/l2/all:
    get:
      tags:
      - L2
      operationId: getL2All
      summary: All L2 chain data
      responses:
        '200':
          description: Complete L2 data for all chains
  /api/v2/l2/status/{chain}:
    get:
      tags:
      - L2
      operationId: getL2Status
      summary: Single L2 chain status
      parameters:
      - name: chain
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Chain details
        '404':
          description: Chain not found
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key
      description: Required for v1 data endpoints. Get at /pricing.html
    BearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: OAuth 2.0 Bearer token from POST /mcp/token
    bearerAuth:
      type: http
      scheme: bearer
      description: FeedOracle OAuth 2.1 Bearer token. Obtain via /mcp/register (Dynamic Client Registration, RFC 7591).
x-nomos-trust-chain:
  model: S0-S10
  manifest: https://agentnomos.com/.well-known/nomos-capabilities.json
x-provenance:
  method: harvested
  publisher: FeedOracle Technologies
  source: https://feedoracle.io/openapi.json
  note: split by refine-openapis from the provider's own published document, verified by fetch (openapi/_original/*.fetch.json);
    stamped by stamp-openapi-provenance.py (roadmap#793)

FeedOracle Technologies L2 API

Operations 4

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OpenAPI Specification