One quote and one unsigned transaction on any Chord chain, for agents. Chord's own router answers first; a third-party aggregator (KyberSwap, Monorail, LI.FI, Relay) only when Chord fails, never for a better price. Every answer names the provider, and a fallback transaction is returned only when its router is on Chord's allowlist and it passed a simulation run as the taker.
Every API here is available over the APIs.io API and to AI agents over MCP.
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.curl "https://apis.io/api/v1/apis/getchord-xyz:getchord-xyz-meta-aggregator-api"curl "https://apis.io/api/v1/apis?limit=25"Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.
openapi: 3.2.0
info:
title: Chord Meta aggregator API
version: '2026-10-05'
summary: Trade, data and agent endpoints for eight EVM chains (Ethereum 1, Arbitrum One 42161, Base 8453, BNB Chain 56, Avalanche 43114, Monad 143, Arc 5042, Robinhood Chain 4663) and Solana (data and swaps).
description: 'Chord is a non-custodial trading app and on-chain data index. The API has three kinds of endpoint:
- **Trade**: `/quote` finds the best route across every venue on the chain; `/swap` turns it into a transaction you sign yourself. Chord never holds funds or keys.
- **Read**: every swap on the chain, rolled up by token, venue and hour, from Chord''s own index — tokens, launches, holders, top wallets, portfolio PnL, liquidity positions and pools. No key needed. Avalanche, Base, BNB Chain, Arbitrum One and Ethereum have the same rollups under `/chains/{chain}/*`; Solana has its own data family under `/chains/solana/*` (base58 addresses, case-sensitive) and its swaps under `/sol/trade/*`.
- **Agent**: the analyst (`/ask`) and the streams.
Amounts are decimal strings in the token''s smallest unit. Timestamps are Unix seconds unless the field is `updatedAt` (milliseconds). `GET /portfolio/{wallet}` and `/portfolio/{wallet}/activity` differ on both: amounts there are in whole tokens and every time is in milliseconds. Reads answer anonymous callers at 60 requests a minute per IP; an `X-API-Key` header raises that to your plan. Every non-2xx body is `{ error, message }`.'
contact:
name: Chord
url: https://getchord.xyz/developer
x-logo:
url: https://getchord.xyz/chord/pwa-192x192.png?v=20261019
servers:
- url: https://api.getchord.xyz/v1
description: Production
tags:
- name: Meta aggregator
description: One quote and one unsigned transaction on any Chord chain, for agents. Chord's own router answers first; a third-party aggregator (KyberSwap, Monorail, LI.FI, Relay) only when Chord fails, never for a better price. Every answer names the provider, and a fallback transaction is returned only when its router is on Chord's allowlist and it passed a simulation run as the taker.
paths:
/meta/quote:
get:
tags:
- Meta aggregator
operationId: metaQuote
summary: 'Quote on any chain: Chord first, a fallback only when it fails'
description: 'One call that ends in a route you can sign or an honest "no route anywhere". Without `taker` it is a price; with `taker` it also returns the unsigned transaction, the approval it needs and a simulation.
**Policy**
1. Chord''s own router is always asked first, with its normal budget.
2. A fallback is asked only when Chord fails: the engine timed out, errored or is down; there is no route; Chord refuses the route itself (value guard, taxed token, stale bonding-curve route); the chain''s router is not live; or the built transaction fails simulation. A better price elsewhere is not a reason. A user error (unknown token, bad amount) never falls back.
3. Fallbacks are tried in the chain''s order (`GET /meta/providers`); the first answer that passes every check wins. Per provider 4 s, whole request 9 s, a circuit breaker per provider and chain.
**Safety, on every fallback answer**
- The transaction target and the approval spender must be on Chord''s allowlist for that provider and chain, and deployed there.
- `minAmountOut` comes from your slippage; a provider minimum below it is refused.
- The value guard of `/quote` applies: an output worth 30 % less than the input at Chord''s prices is refused. An unpriced token gets a security scan (`safety`); a honeypot is refused.
- With `taker`, the transaction is simulated as that wallet and must deliver at least `minAmountOut`. A fallback transaction that cannot be simulated is never returned.
- Without `taker`, a fallback price is shown only after the provider BUILT the route and it was simulated for a placeholder wallet (`PRICE_CHECKED`); a provider that prices a size but will not build it is skipped. The placeholder''s transaction is never returned.
- An input the simulation cannot supply (a balance that is not a plain storage mapping, e.g. rebasing shares) while the taker does not hold it: HTTP 422 `INPUT_NOT_SIMULATABLE` — hold the input and ask again.
**Notes**
- `provider: null` with HTTP 200 means every provider looked and none has a route. HTTP 503 `UNAVAILABLE` means nobody could answer right now: retry, do not conclude the pair is untradeable.
- The answer is good until `expiresAt` (30 s). Quote again before signing if you waited.'
parameters:
- name: chain
in: query
required: true
schema:
type: string
description: 'Chain id or key: `143` monad · `4663` robinhood · `5042` arc · `43114` avalanche · `8453` base · `56` bnb · `42161` arbitrum · `1` ethereum.'
- name: tokenIn
in: query
required: true
schema:
type: string
pattern: ^0x[a-fA-F0-9]{40}$
description: EVM address, hex, case-insensitive.
description: Token you sell. The zero address = the chain's native asset (on Arc it aliases to the USDC predeploy). `inputMint` is accepted too.
- name: tokenOut
in: query
required: true
schema:
type: string
pattern: ^0x[a-fA-F0-9]{40}$
description: EVM address, hex, case-insensitive.
description: Token you buy. `outputMint` is accepted too.
- name: amount
in: query
required: true
schema:
type: string
pattern: ^\d+$
description: Amount in the token's smallest unit, as a decimal string. Never a float.
description: Input amount, smallest unit.
- name: slippageBps
in: query
required: false
schema:
type: integer
minimum: 1
maximum: 5000
default: 50
description: Sets `minAmountOut`.
- name: taker
in: query
required: false
schema:
type: string
pattern: ^0x[a-fA-F0-9]{40}$
description: EVM address, hex, case-insensitive.
description: The wallet that signs and receives. With it the answer carries `tx`, `approval` and `simulation`. `userPublicKey` is accepted too.
responses:
'200':
description: The quote. Read `provider` and `fallbackReason` before anything else.
content:
application/json:
schema:
$ref: '#/components/schemas/MetaQuote'
example:
chain: 8453
tokenIn: '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913'
tokenOut: '0x4200000000000000000000000000000000000006'
amountIn: '10000000'
taker: '0x00000000000000000000000000000000000c0ffe'
slippageBps: 50
provider: chord
fallbackReason: null
attempts:
- provider: chord
status: ok
ms: 222
error: null
amountOut: '3727897844407334'
minAmountOut: '3709258355185298'
priceImpactPct: '0.0000'
valueLossPct: -0.02
feeBps: 0
feeRecipient: '0x6c66229675fd9ceda9a9b2ea2bd983b3d8255834'
route:
venues:
- aerodrome_slipstream_3
tx:
to: '0x1b1fee89a381e595fe6536b99ba91f3e16e9601a'
data: 0xdc72a437…
value: '0'
gas: '1000000'
chainId: 8453
approval:
token: '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913'
spender: '0x1b1fee89a381e595fe6536b99ba91f3e16e9601a'
amount: '10000000'
simulation:
ok: true
amountOut: '3727897844407334'
gasUsed: 456590
safety: null
warnings:
- 'INSUFFICIENT_BALANCE: the taker holds less than the input amount; the transaction was simulated with the input supplied.'
quoteId: 8f722080-92a4-493d-aa16-a06f468a581e
expiresAt: 1791055797
'400':
description: Invalid parameters — `error` names the check that failed (`INVALID_PARAMS`, `BAD_ADDRESS`, `BAD_LIMIT`, `BAD_HOURS`, …).
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'422':
description: 'The request is valid but cannot be served as asked (`INPUT_NOT_SIMULATABLE` on `/meta/*`: a route exists, but the input token cannot be supplied in a simulation and the taker does not hold it — hold the input and ask again).'
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'429':
description: Over the per-minute limit (`RATE_LIMIT_EXCEEDED`). Read `X-RateLimit-Reset` and back off.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'503':
description: The lane behind this endpoint is not ready or not enabled here (`NOT_READY`, `CHAIN_NOT_ENABLED`, `NOT_ENABLED`, `*_UNAVAILABLE`). Retry later; do not treat it as an empty answer.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
/meta/swap:
post:
tags:
- Meta aggregator
operationId: metaSwap
summary: 'Unsigned transaction on any chain: Chord first, a fallback only when it fails'
description: 'The same answer as `/meta/quote` with a `taker` required: an UNSIGNED transaction, simulated as the taker. Chord never signs and never holds funds.
Send the pair and amount, or the `quoteId` of a `/meta/quote` answer from the last 2 minutes. The policy runs again at the current state, so `provider` can differ from the quote''s: compare before you sign.
**Before signing**
- `approval` not null: send `token.approve(spender, amount)` first. `spender` is `tx.to`. With `approval.resetFirst: true` (USDT on Ethereum, a left-over allowance) send `approve(spender, 0)` before it.
- When `provider` is not `chord`, `tx.to` is that aggregator''s router. Show the user which provider it is.
**Policy**
1. Chord''s own router is always asked first, with its normal budget.
2. A fallback is asked only when Chord fails: the engine timed out, errored or is down; there is no route; Chord refuses the route itself (value guard, taxed token, stale bonding-curve route); the chain''s router is not live; or the built transaction fails simulation. A better price elsewhere is not a reason. A user error (unknown token, bad amount) never falls back.
3. Fallbacks are tried in the chain''s order (`GET /meta/providers`); the first answer that passes every check wins. Per provider 4 s, whole request 9 s, a circuit breaker per provider and chain.
**Safety, on every fallback answer**
- The transaction target and the approval spender must be on Chord''s allowlist for that provider and chain, and deployed there.
- `minAmountOut` comes from your slippage; a provider minimum below it is refused.
- The value guard of `/quote` applies: an output worth 30 % less than the input at Chord''s prices is refused. An unpriced token gets a security scan (`safety`); a honeypot is refused.
- With `taker`, the transaction is simulated as that wallet and must deliver at least `minAmountOut`. A fallback transaction that cannot be simulated is never returned.
- Without `taker`, a fallback price is shown only after the provider BUILT the route and it was simulated for a placeholder wallet (`PRICE_CHECKED`); a provider that prices a size but will not build it is skipped. The placeholder''s transaction is never returned.
- An input the simulation cannot supply (a balance that is not a plain storage mapping, e.g. rebasing shares) while the taker does not hold it: HTTP 422 `INPUT_NOT_SIMULATABLE` — hold the input and ask again.'
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
chain:
type: string
description: Chain id or key.
tokenIn:
type: string
pattern: ^0x[a-fA-F0-9]{40}$
description: EVM address, hex, case-insensitive.
tokenOut:
type: string
pattern: ^0x[a-fA-F0-9]{40}$
description: EVM address, hex, case-insensitive.
amount:
type: string
pattern: ^\d+$
description: Amount in the token's smallest unit, as a decimal string. Never a float.
slippageBps:
type: integer
minimum: 1
maximum: 5000
default: 50
taker:
type: string
pattern: ^0x[a-fA-F0-9]{40}$
description: The wallet that signs and receives.
quoteId:
type: string
description: 'Instead of chain / tokens / amount: the id of a `/meta/quote` answer (valid 2 minutes).'
required:
- taker
example:
chain: 8453
tokenIn: '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913'
tokenOut: '0x4200000000000000000000000000000000000006'
amount: '10000000'
slippageBps: 50
taker: '0x00000000000000000000000000000000000c0ffe'
responses:
'200':
description: Sign `tx` with any wallet library and submit it to the chain in `tx.chainId`.
content:
application/json:
schema:
$ref: '#/components/schemas/MetaQuote'
example:
chain: 8453
tokenIn: '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913'
tokenOut: '0x4200000000000000000000000000000000000006'
amountIn: '10000000'
taker: '0x00000000000000000000000000000000000c0ffe'
slippageBps: 50
provider: chord
fallbackReason: null
attempts:
- provider: chord
status: ok
ms: 222
error: null
amountOut: '3727897844407334'
minAmountOut: '3709258355185298'
priceImpactPct: '0.0000'
valueLossPct: -0.02
feeBps: 0
feeRecipient: '0x6c66229675fd9ceda9a9b2ea2bd983b3d8255834'
route:
venues:
- aerodrome_slipstream_3
tx:
to: '0x1b1fee89a381e595fe6536b99ba91f3e16e9601a'
data: 0xdc72a437…
value: '0'
gas: '1000000'
chainId: 8453
approval:
token: '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913'
spender: '0x1b1fee89a381e595fe6536b99ba91f3e16e9601a'
amount: '10000000'
simulation:
ok: true
amountOut: '3727897844407334'
gasUsed: 456590
safety: null
warnings:
- 'INSUFFICIENT_BALANCE: the taker holds less than the input amount; the transaction was simulated with the input supplied.'
quoteId: 8f722080-92a4-493d-aa16-a06f468a581e
expiresAt: 1791055797
'400':
description: Invalid parameters — `error` names the check that failed (`INVALID_PARAMS`, `BAD_ADDRESS`, `BAD_LIMIT`, `BAD_HOURS`, …).
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'404':
description: No provider has a route for this pair and size (`NO_ROUTE`); the body carries `fallbackReason` and `attempts`.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'410':
description: Unknown or expired `quoteId` (`QUOTE_EXPIRED`). Send the full params.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'422':
description: 'The request is valid but cannot be served as asked (`INPUT_NOT_SIMULATABLE` on `/meta/*`: a route exists, but the input token cannot be supplied in a simulation and the taker does not hold it — hold the input and ask again).'
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'429':
description: Over the per-minute limit (`RATE_LIMIT_EXCEEDED`). Read `X-RateLimit-Reset` and back off.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'503':
description: The lane behind this endpoint is not ready or not enabled here (`NOT_READY`, `CHAIN_NOT_ENABLED`, `NOT_ENABLED`, `*_UNAVAILABLE`). Retry later; do not treat it as an empty answer.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
/meta/providers:
get:
tags:
- Meta aggregator
operationId: metaProviders
summary: Fallback order and breaker state per chain
description: Which aggregators stand behind Chord's router on each chain, in the order they are tried, and whether each one's circuit breaker is closed. `first` is always `chord`.
responses:
'200':
description: Per chain.
content:
application/json:
schema:
type: object
properties:
policy:
type: string
description: ''
chains:
type: array
items:
type: object
properties:
chain:
type: integer
description: ''
key:
type: string
description: ''
first:
type: string
description: Always `chord`.
fallbacks:
type: array
items:
type: object
properties:
provider:
type: string
description: ''
breaker:
type: string
description: '`closed`, `open` (skipped for up to 60 s after 5 infrastructure failures in 2 minutes) or `half-open` (the next request probes it).'
example:
policy: Chord's router answers first; a fallback is used only when Chord fails, never for a better price.
chains:
- chain: 143
key: monad
first: chord
fallbacks:
- provider: kyberswap
breaker: closed
- provider: monorail
breaker: closed
- provider: relay
breaker: closed
- chain: 4663
key: robinhood
first: chord
fallbacks:
- provider: kyberswap
breaker: closed
- provider: lifi
breaker: closed
- provider: relay
breaker: closed
- chain: 5042
key: arc
first: chord
fallbacks:
- provider: kyberswap
breaker: closed
- provider: lifi
breaker: closed
- provider: relay
breaker: closed
- chain: 43114
key: avalanche
first: chord
fallbacks:
- provider: kyberswap
breaker: closed
- provider: lifi
breaker: closed
- provider: relay
breaker: closed
- chain: 8453
key: base
first: chord
fallbacks:
- provider: kyberswap
breaker: closed
- provider: lifi
breaker: closed
- provider: relay
breaker: closed
- chain: 56
key: bnb
first: chord
fallbacks:
- provider: kyberswap
breaker: closed
- provider: lifi
breaker: closed
- provider: relay
breaker: closed
'429':
description: Over the per-minute limit (`RATE_LIMIT_EXCEEDED`). Read `X-RateLimit-Reset` and back off.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'503':
description: The lane behind this endpoint is not ready or not enabled here (`NOT_READY`, `CHAIN_NOT_ENABLED`, `NOT_ENABLED`, `*_UNAVAILABLE`). Retry later; do not treat it as an empty answer.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
components:
schemas:
Error:
type: object
properties:
error:
type: string
description: Stable machine code, e.g. `INVALID_PARAMS`, `NOT_READY`, `RATE_LIMIT_EXCEEDED`.
message:
type: string
description: For humans.
statusCode:
type: integer
description: HTTP status, when included.
description: Every non-2xx body.
required:
- error
example:
error: INVALID_PARAMS
message: amount must be an integer string in the token's smallest unit
MetaQuote:
type: object
properties:
chain:
type: integer
description: Chain id.
tokenIn:
type: string
pattern: ^0x[a-fA-F0-9]{40}$
description: EVM address, hex, case-insensitive.
tokenOut:
type: string
pattern: ^0x[a-fA-F0-9]{40}$
description: EVM address, hex, case-insensitive.
amountIn:
type: string
pattern: ^\d+$
description: Amount in the token's smallest unit, as a decimal string. Never a float.
taker:
type:
- string
- 'null'
pattern: ^0x[a-fA-F0-9]{40}$
description: The wallet the transaction was built and simulated for; null on a price-only quote.
slippageBps:
type: integer
description: The slippage `minAmountOut` reflects.
provider:
type:
- string
- 'null'
description: 'Who answered: `chord` (Chord''s own router), `kyberswap`, `monorail`, `lifi`, `relay`. `null` = no provider has a route.'
fallbackReason:
type:
- string
- 'null'
description: '`null` when Chord answered. Otherwise why it did not: `no_route`, `insufficient_liquidity`, `engine_error`, `engine_timeout`, `engine_down`, `value_guard`, `taxed_token`, `route_stale`, `chain_not_live`, `build_failed`, `simulation_failed`.'
attempts:
type: array
items:
$ref: '#/components/schemas/MetaAttempt'
description: Every provider asked, in order.
amountOut:
type: string
pattern: ^\d+$
description: What the taker receives after every fee, smallest unit of `tokenOut`. (`/quote`'s `outputAmount` is before Chord's fee; this is after.)
minAmountOut:
type: string
pattern: ^\d+$
description: The minimum the transaction enforces, from the slippage you asked for.
priceImpactPct:
type:
- string
- 'null'
description: Percent, when the provider states one.
valueLossPct:
type:
- number
- 'null'
description: 'Output value against input value at Chord''s own prices, percent (negative = worth more). `null` when Chord has no reliable price for a side: see `safety` and `warnings`.'
feeBps:
type: integer
description: 'Chord path: Chord''s protocol fee on the output. Fallback: the integrator fee Chord added (0 today); the provider''s own fees are already inside `amountOut`.'
feeRecipient:
type:
- string
- 'null'
pattern: ^0x[a-fA-F0-9]{40}$
description: EVM address, hex, case-insensitive.
route:
type: object
properties:
venues:
type: array
items:
type: string
description: ''
description: Venue names.
tx:
type:
- object
- 'null'
properties:
to:
type: string
pattern: ^0x[a-fA-F0-9]{40}$
description: EVM address, hex, case-insensitive.
data:
type: string
description: Calldata.
value:
type: string
pattern: ^\d+$
description: Amount in the token's smallest unit, as a decimal string. Never a float.
gas:
type:
- string
- 'null'
description: Gas limit to sign with.
chainId:
type: integer
description: ''
description: The UNSIGNED transaction. `null` without `taker`. `to` is the Chord router when `provider` is `chord`, the provider's own router otherwise.
approval:
type:
- object
- 'null'
properties:
token:
type: string
pattern: ^0x[a-fA-F0-9]{40}$
description: EVM address, hex, case-insensitive.
spender:
type: string
pattern: ^0x[a-fA-F0-9]{40}$
description: EVM address, hex, case-insensitive.
amount:
type: string
pattern: ^\d+$
description: Amount in the token's smallest unit, as a decimal string. Never a float.
resetFirst:
type: boolean
description: 'Present only for a token that reverts `approve(x > 0)` while its allowance is non-zero (USDT on Ethereum). `true` = the taker has a left-over allowance: send `approve(spender, 0)` first, then this approval.'
description: The approval to send first. `null` for a native input or when the taker's allowance already covers the amount.
simulation:
type:
- object
- 'null'
properties:
ok:
type:
- boolean
- 'null'
description: '`true` = ran and delivered at least `minAmountOut`; `null` = no verdict (only ever returned on the Chord path).'
amountOut:
type: string
pattern: ^\d+$
description: Amount in the token's smallest unit, as a decimal string. Never a float.
gasUsed:
type: integer
description: ''
revert:
type: string
description: ''
reason:
type: string
description: ''
description: The transaction run as the taker (with the input supplied when the taker does not hold it), measuring the taker's own balance change. `null` without `taker`.
safety:
type:
- object
- 'null'
properties:
source:
type: string
description: '`goplus`'
token:
type: string
pattern: ^0x[a-fA-F0-9]{40}$
description: EVM address, hex, case-insensitive.
worstFlag:
type: string
description: '`none`, `low`, `medium`, `high`.'
honeypot:
type:
- boolean
- 'null'
description: ''
buyTaxPct:
type:
- number
- 'null'
description: ''
sellTaxPct:
type:
- number
- 'null'
description: ''
risks:
type: array
items:
type: string
description: ''
description: A security scan of the unknown token, present when the value check could not run on a fallback answer.
warnings:
type: array
items:
type: string
description: ''
description: '`INSUFFICIENT_BALANCE`, `UNPRICED`, `OUTPUT_WRAPPED`, `NO_ROUTE`, and on a price-only fallback `PRICE_CHECKED` (built and simulated for a placeholder wallet) or `UNVERIFIED_PRICE` (built, not simulatable) — each followed by a sentence.'
quoteId:
type: string
description: Pass to `POST /meta/swap` within 2 minutes.
expiresAt:
type: integer
description: Unix time, seconds, UTC.
description: The same shape whichever provider answered.
MetaAttempt:
type: object
properties:
provider:
type: string
description: '`chord`, `kyberswap`, `monorail`, `lifi` or `relay`.'
status:
type: string
description: '`ok`, or why this provider did not produce the answer: `no_route`, `timeout`, `http_error`, `rate_limited`, `invalid_response`, `not_allowlisted`, `calldata_mismatch`, `min_out_too_low`, `value_gap`, `unsafe_token`, `simulation_failed`, `unverified`, `breaker_open`, `skipped`; for Chord also `engine_error`, `engine_timeout`, `engine_down`, `route_refused`, `build_failed`, `chain_not_live`.'
ms:
type: integer
description: Time spent on this provider.
error:
type:
- string
- 'null'
description: Short reason from a fixed vocabulary, never provider text.
description: One provider that was asked, in order.
securitySchemes:
ApiKey:
type: apiKey
in: header
name: X-API-Key
description: Optional on every read. A key from getchord.xyz/developer raises the rate limit to your plan and meters usage per key. Required for `?only=` on quotes and for the Ask agent API.
Session:
type: http
scheme: bearer
description: A Google sign-in session minted by the app (`nts_…`). Only the browser surfaces use it; agents use `ApiKey`.