0
💰 Paid API
data
Zapper
public.zapper.xyz
· public.zapper.xyz
Portfolio data, token balances, DeFi positions
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Our probe of this card is currently failing
— 404 not found
We tried /.well-known/agent-card.json and got a 404. Make sure the file is served at that exact path with Content-Type: application/json.
Last attempt: 2026-07-18 19:21
Last success: 2026-07-16
Status: 404
Raw error
HTTP 404
Trust score
27/100
grade F · 9 criteria
Uptime
16.4%
61 probes
Revenue · 30d
$0.00
wallet active · no inflow
Usage · 7d
0
no recent activity
Card drift · 7d
changed
0 snapshots tracked
Owner
unverified
claim this listing →
F
Conformance score: 27/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾
click to collapse breakdown ▴
F
Conformance score: 27/100
F-grade: card is reachable but fails most operational signals.
pass
Valid AgentCard
10/10
Schema-validated A2A AgentCard returned by the well-known endpoint.
info
Live JSON-RPC
0/25
Live probe hasn't run yet.
fail
Protocol version
0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to the AgentCard root. Without it, callers can't negotiate v0.x vs v1.0 compatibility.
Docs →
info
JWS signature
0/10
Card is unsigned (most published agents are).
fail
Uptime track record
2/15
10/61 probes succeeded (16% uptime).
How to earn +13 points
Stabilise uptime
We probe every agent on a tiered schedule. Sustained 99 %+ uptime over 20+ checks scores full points. Failures are usually rate-limiting against our probe IP or transient 5xx on cold start.
Docs →
partial
Skill declaration
6/10
Declares 1 skill, usable but thin.
How to earn +4 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial
Verified Identity
5/10
Provider declared: public.zapper.xyz (https://public.zapper.xyz). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass
Freshness + modern flags
4/5
seen in upstream source within 0d
info
Security declaration
0/5
No securitySchemes declared (common for open agents, not penalised).
⚠ Card drift detected. This agent's
agent-card.json changed within the last 7 days. We track these so downstream callers can react.
Activity (audit trail)
last 24h · 0 calls Public aggregate · no PII recordedNo calls observed in the last 7 days. Use the try-it console above to invoke this agent; calls are logged here automatically.
Uptime
16.4%
61 probes
Response
0ms
last probe
Skills
0
declared
Streaming
—
SSE-capable
Endpoints
On-chain revenue
verified on-chain
Last 7d
$0.29
232 calls
USDC inflows on Base. Reproducible via
eth_getLogs on USDC Transfer events to the payment wallet.
| Agent card | https://public.zapper.xyz/.well-known/agent-card.json |
| Provider | https://public.zapper.xyz |
| Docs | https://public.zapper.xyz |
Discovered via
agentic_market
recrawl_hot
recrawl_warm
Skills · 1 declared · mapped to canonical taxonomy
Health · last 27 probes
Cheaper or better alternatives per-skill
↑ 1 higher quality
For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor. Only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.
Data Engineering
oasf
44 other agents serve this
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Markdown / HTML snippets
[](https://agenstry.com/agents/public.zapper.xyz) [](https://agenstry.com/agents/public.zapper.xyz) [](https://agenstry.com/agents/public.zapper.xyz) [](https://agenstry.com/agents/public.zapper.xyz)
Audit-grade evidence bundle
JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against
our JWKS. See the methodology.
Raw agent card JSON
{
"_source": "agentic.market",
"service": {
"id": "public-zapper-xyz",
"name": "Zapper",
"description": "Portfolio data, token balances, DeFi positions",
"domain": "public.zapper.xyz",
"provider": "public.zapper.xyz",
"providerUrl": "https://public.zapper.xyz",
"category": "Data",
"networks": [
"Base"
],
"enriched": true,
"endpoints": [
{
"url": "https://public.zapper.xyz/x402/account-identity",
"description": "Get social identity (ENS, Farcaster, Lens, Basenames) for a specific address.",
"pricing": {
"amount": "0.001125",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "address",
"type": "string",
"description": "",
"example": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://public.zapper.xyz/x402/defi-balances",
"description": "Get DeFi balances (Liquidity Pools, Yield Farming, Lending, etc.) for a single address, or a list of addresses.",
"pricing": {
"amount": "0.001125",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "addresses",
"type": "array",
"description": "",
"example": [],
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "first",
"type": "number",
"description": "",
"example": 10,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "4",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://public.zapper.xyz/x402/general-swap-feed",
"description": "Get a real-time feed of swap activity across Farcaster, including token trades, volume, and social context.",
"pricing": {
"amount": "0.00375",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://public.zapper.xyz/x402/historical-token-price",
"description": "Get the price of a token at a specific point in time.",
"pricing": {
"amount": "0.001125",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "address",
"type": "string",
"description": "",
"example": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "chainId",
"type": "number",
"description": "",
"example": 8453,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "timestamp",
"type": "number",
"description": "",
"example": 1700000000000,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://public.zapper.xyz/x402/nft-balances",
"description": "Get individual NFT balances and estimated values for a single address, or a list of addresses.",
"pricing": {
"amount": "0.001125",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "addresses",
"type": "array",
"description": "",
"example": [],
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "first",
"type": "number",
"description": "",
"example": 10,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "4",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://public.zapper.xyz/x402/nft-collection-metadata",
"description": "Get NFT collection data including market stats, holders, events, and a sample of NFTs.",
"pricing": {
"amount": "0.001125",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "collections",
"type": "array",
"description": "",
"example": [],
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://public.zapper.xyz/x402/nft-ranking",
"description": "Get a ranked list of NFT collections based on rading activity and collection popularity, optionally tailored for a farcaster user.",
"pricing": {
"amount": "0.0045",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "first",
"type": "number",
"description": "",
"example": 10,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://public.zapper.xyz/x402/nft-token-metadata",
"description": "Get detailed metadata, traits, media, and holder info for a specific NFT",
"pricing": {
"amount": "0.001125",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "chainId",
"type": "number",
"description": "",
"example": 8453,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "collectionAddress",
"type": "string",
"description": "",
"example": "0xa449b4f43d9a33fcdcf397b9cc7aa909012709fd",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "tokenId",
"type": "string",
"description": "",
"example": "1",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://public.zapper.xyz/x402/portfolio-totals",
"description": "Get aggregated portfolio totals (Tokens, Apps, NFTs) broken down by network for a single address, or a list of addresses.",
"pricing": {
"amount": "0.001875",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "addresses",
"type": "array",
"description": "",
"example": [],
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "5",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://public.zapper.xyz/x402/search",
"description": "Search for ERC20 tokens, NFTs, Users, Apps, or Gas Tokens.",
"pricing": {
"amount": "0.0045",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "categories",
"type": "array",
"description": "",
"example": [],
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "search",
"type": "string",
"description": "",
"example": "USDC",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "4",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://public.zapper.xyz/x402/token-activity-feed",
"description": "Get a combined activity feed for a specific token, including swaps and top Farcaster casts, personalized for a given user.",
"pricing": {
"amount": "0.00375",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "chainId",
"type": "number",
"description": "",
"example": 8453,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "tokenAddress",
"type": "string",
"description": "",
"example": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://public.zapper.xyz/x402/token-balances",
"description": "Get detailed token balances for a single address, or a list of addresses, optionally filtering by chain.",
"pricing": {
"amount": "0.001125",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "addresses",
"type": "array",
"description": "",
"example": [],
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "first",
"type": "number",
"description": "",
"example": 10,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "5",
"l30DaysUniquePayers": "4"
}
},
{
"url": "https://public.zapper.xyz/x402/token-holders",
"description": "Get token holders with balances and identity information for a specific token.",
"pricing": {
"amount": "0.001125",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "address",
"type": "string",
"description": "",
"example": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "chainId",
"type": "number",
"description": "",
"example": 8453,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "first",
"type": "number",
"description": "",
"example": 10,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "4",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://public.zapper.xyz/x402/token-price",
"description": "Get real-time token price and market cap",
"pricing": {
"amount": "0.001125",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "address",
"type": "string",
"description": "",
"example": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "chainId",
"type": "number",
"description": "",
"example": 8453,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://public.zapper.xyz/x402/token-ranking",
"description": "Get a ranked list of tokens based on swap activity and velocity of adoption, optionally tailored for a farcaster user.",
"pricing": {
"amount": "0.0045",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "first",
"type": "number",
"description": "",
"example": 10,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://public.zapper.xyz/x402/transaction-details",
"description": "Get human-readable interpretation, metadata, and balance changes for a specific transaction.",
"pricing": {
"amount": "0.001125",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "chainId",
"type": "number",
"description": "",
"example": 1,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "hash",
"type": "string",
"description": "",
"example": "0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "15",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://public.zapper.xyz/x402/transaction-history",
"description": "Get transaction history with interpretations and metadata for a single address, or a list of addresses.",
"pricing": {
"amount": "0.001125",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "POST",
"providerName": "",
"parameters": [
{
"group": "body",
"name": "first",
"type": "number",
"description": "",
"example": 10,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "body",
"name": "subjects",
"type": "array",
"description": "",
"example": [],
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"quality": {
"l30DaysTotalCalls": "4",
"l30DaysUniquePayers": "2"
}
}
],
"integrationType": "1P",
"isNew": false,
"priceSummary": {
"minAmount": "0.001125",
"maxAmount": "0.0045",
"avgCostPerTransaction": "0.002074",
"avgCostBasis": "exact",
"currency": "USDC"
},
"serviceName": "Zapper",
"tags": [
"defi",
"portfolio",
"balances",
"positions"
],
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1780076811/bazaar-icons/665d01ce6ce35280.png"
}
}