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Glama

Server Details

Non-custodial USDC <-> bank for AI agents via x402 + Transak. Own funds only; PT + EU/EEA; 18+.

Status
Healthy
Last Tested
Transport
Streamable HTTP
URL
Repository
fiatdock/fiatdock
GitHub Stars
1
Server Listing
fiatdock-mcp

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MCP client
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MCP server

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Tool DescriptionsA

Average 4.5/5 across 10 of 10 tools scored. Lowest: 3.8/5.

Server CoherenceA
Disambiguation5/5

Each tool targets a distinct function: service calls, fiat on/off-ramp sessions, order tracking, quotes, service listing/search, token price, token safety, and stablecoin intel. No overlapping purposes.

Naming Consistency5/5

All tool names follow a consistent verb_noun pattern (e.g., create_offramp_session, get_order_status, search_services), making it easy for an agent to infer their function.

Tool Count5/5

With 10 tools, the server covers its financial marketplace and payment domain without being bloated or sparse. Each tool has a clear role.

Completeness4/5

Core CRUD-like operations are present: listing search/detail, service invocation, fiat conversion sessions, order status, quotes, and token data. Minor gaps like order cancellation or user account management exist but do not severely hinder agents.

Available Tools

10 tools
call_serviceCall a marketplace serviceAInspect

Invoke a listed FiatDock service. PAID listings go THROUGH the gateway (POST /s/:id) so the non-custodial split is enforced — normally TWO payments (99% seller + 1% FiatDock), or ONE full-price payment to the seller during that seller's first-month 0% launch window; this remote /mcp cannot sign payments, so it returns the gateway's 402 challenge as an error (use the fiatdock-mcp npm package with AGENT_PRIVATE_KEY to pay whatever the 402 lists automatically). FREE / first-party listings are forwarded to their real MCP endpoint directly (no payment). Pass the service's expected request body as args.

ParametersJSON Schema
NameRequiredDescriptionDefault
idYesListing id (svc_…) to invoke, from search_services
argsNoJSON payload to send to the service (e.g. an MCP JSON-RPC request body) — shape is defined by that service

Output Schema

ParametersJSON Schema
NameRequiredDescription
okYestrue when the underlying service returned a 2xx
resultNoThe service's response body — parsed JSON when it returned JSON, otherwise the raw text
statusYesHTTP status returned by the service (or the gateway)
serviceYesListing id that was invoked
routedThroughGatewayYestrue if PAID (settled 99% seller / 1% FiatDock via /s/:id); false if FREE/first-party direct
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The description discloses key behaviors beyond annotations: paid listings go through a gateway enforcing a split (99%/1%) or a full-price payment during a launch window, while free listings are forwarded directly. It also states that the MCP cannot sign payments and returns a 402 error as a challenge. No contradiction with annotations (readOnlyHint=false, etc.).

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is three sentences with a clear front-loaded purpose, followed by essential details about payment handling and bypass behavior. No redundant information; every sentence earns its place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (2 parameters, output schema exists, payment logic), the description covers all critical aspects: invocation mechanics, payment handling, error scenarios, and parameter usage. It is complete for an agent to correctly select and invoke the tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, but the description adds value by explaining that 'args' is a JSON payload shaped by the service, and that 'id' determines whether the service is paid or free, affecting the response (402 challenge for paid). This provides semantic context beyond the schema's type definitions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'Invoke a listed FiatDock service,' which is a specific verb+resource. It distinguishes from sibling tools (e.g., create_offramp_session, get_quote) that are for specific actions rather than generic invocation. The added detail about paid vs free listings further clarifies the purpose.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly explains when to use this tool (to call any service, paid or free) and provides guidance on handling payment failures: it notes that the remote MCP cannot sign payments and returns a 402 error, recommending the fiatdock-mcp npm package for payment. It contrasts with siblings by being the general invocation tool.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

create_offramp_sessionCreate off-ramp session (USDC → bank)AInspect

Convert the agent's USDC to fiat in the owner's OWN bank account. Returns a one-time checkoutUrl (forward it to the human owner; valid 5 minutes, single use) and a partnerOrderId to track. Paid endpoint ($0.05 USDC via x402) — without payment this returns the 402 challenge; use the fiatdock-mcp npm package with AGENT_PRIVATE_KEY for automatic payment. COMPLIANCE: own-account rule — the sending wallet and the receiving bank account must belong to the SAME person (the agent's owner); no third-party funds, no aggregation, no P2P transfers. 18+; service area: Portugal + Transak-supported EU/EEA countries (NOT the UK). Crypto is volatile; not investment advice.

ParametersJSON Schema
NameRequiredDescriptionDefault
refNoOptional referral code (1-64 chars: letters, digits, _ or -)
emailNoOwner's Transak account email
networkNoUSDC network, default base
providerNoLicensed fiat provider to use. Omit for the server default. `mtpelerin` settles by SEPA bank transfer across the SEPA zone and is NOT gated on Transak's activation state; note that its order status is not push-updated, so get_order_status stays at the initial state for mtpelerin sessions (confirm in your wallet/bank instead). A provider that is not configured on this server returns 400.
customerIdNoStable agent/customer id
cryptoAmountYesUSDC amount to sell
fiatCurrencyNoe.g. EUR, default EUR

Output Schema

ParametersJSON Schema
NameRequiredDescription
noteNoNext-step instructions
checkoutUrlYesOne-time branded checkout URL (valid ~5 minutes, single use) — forward to the human owner
customerKeyNoReturned ONCE on the first session with a new customerId — store securely
partnerOrderIdYesOrder id — track it with get_order_status
customerKeyNoteNoHow to use customerKey
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Discloses key behaviors beyond annotations: paid endpoint ($0.05 USDC via x402), returns 402 challenge without payment, checkoutUrl valid 5 minutes single use, mtpelerin provider does not push-update order status. No contradiction with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Description is somewhat long but well-structured: main action first, then payment, compliance, area, disclaimer. Every sentence adds necessary information; could be slightly more concise but appropriate for complexity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Covers key aspects: return values, payment, compliance, service limitations, provider differences. With output schema present, return value detail is sufficient. Lacks only minor details like error cases, but overall complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3. Description adds value by explaining parameter context: e.g., email is owner's Transak account, provider options have caveats, and payment flow. Adds meaning beyond schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states the action: 'Convert the agent's USDC to fiat in the owner's OWN bank account.' It uses specific verbs and resources, and distinguishes itself from sibling tools like create_onramp_session and get_order_status.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides explicit context on when to use (convert USDC to fiat for owner's bank) and compliance rules (own-account, 18+, service area). Mentions payment requirement and uses npm package for automation. Could explicitly exclude use cases for third-party funds, but overall clear guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

create_onramp_sessionCreate on-ramp session (fiat → USDC)AInspect

Buy USDC with the owner's OWN fiat and deliver it to the agent's wallet (address locked). Returns checkoutUrl + partnerOrderId. Paid endpoint ($0.05 USDC via x402) — without payment this returns the 402 challenge; use the fiatdock-mcp npm package with AGENT_PRIVATE_KEY for automatic payment. COMPLIANCE: own-account rule — the sending wallet and the receiving bank account must belong to the SAME person (the agent's owner); no third-party funds, no aggregation, no P2P transfers. 18+; service area: Portugal + Transak-supported EU/EEA countries (NOT the UK). Crypto is volatile; not investment advice.

ParametersJSON Schema
NameRequiredDescriptionDefault
refNoOptional referral code (1-64 chars: letters, digits, _ or -)
emailNoOwner's Transak account email
networkNoUSDC network, default base
providerNoLicensed fiat provider to use. Omit for the server default. `mtpelerin` settles by SEPA bank transfer across the SEPA zone and is NOT gated on Transak's activation state; note that its order status is not push-updated, so get_order_status stays at the initial state for mtpelerin sessions (confirm in your wallet/bank instead). A provider that is not configured on this server returns 400.
customerIdNoStable agent/customer id
fiatAmountYesFiat amount to spend
fiatCurrencyNoe.g. EUR, default EUR
walletAddressYesAgent wallet that receives USDC

Output Schema

ParametersJSON Schema
NameRequiredDescription
noteNoNext-step instructions
checkoutUrlYesOne-time branded checkout URL (valid ~5 minutes, single use) — forward to the human owner
customerKeyNoReturned ONCE on the first session with a new customerId — store securely
partnerOrderIdYesOrder id — track it with get_order_status
customerKeyNoteNoHow to use customerKey
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Discloses payment requirement and 402 challenge, compliance rules, provider-specific behaviors (mtpelerin not push-updated), and area restrictions. Adds significant behavioral context beyond annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with main action, then adds necessary details. Slightly long but all information is valuable. Concise for the complexity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Covers purpose, payment, compliance, area, providers, and disclaimer. With full schema coverage and output schema, description is complete for safe and effective use.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, baseline 3. Description adds value for 'provider' param with detailed trade-offs. Other params are adequately covered by schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it buys USDC with own fiat and delivers to agent's wallet, using specific verbs and resources. It distinguishes from siblings like create_offramp_session, making purpose unambiguous.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly covers when to use (own-account rule, 18+, service area), how to handle payment (x402, npm package), and alternatives (provider choice with detailed behavior). Provides clear context for correct invocation.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_order_statusGet order statusA
Read-onlyIdempotent
Inspect

Check the status of an on/off-ramp order by partnerOrderId.

ParametersJSON Schema
NameRequiredDescriptionDefault
partnerOrderIdYesOrder id returned when the session was created

Output Schema

ParametersJSON Schema
NameRequiredDescription
refNoReferral code if one was set
statusYesSESSION_CREATED -> PROCESSING -> COMPLETED | FAILED | CANCELLED | EXPIRED
createdAtNoISO 8601 session creation time
updatedAtNoISO 8601 time of the last webhook update
customerIdNoCustomer id the session was created with
isBuyOrSellNoOrder direction
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint, openWorldHint, and idempotentHint. Description adds no additional behavioral context, such as error responses or state changes. It does not contradict annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence, no redundancy, directly conveys the tool's purpose with necessary detail.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the simple one-parameter input, existence of output schema, and annotations, the description is mostly complete. Minor omission: does not mention possible statuses or error cases, but output schema likely covers that.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with a clear description for the single parameter 'partnerOrderId'. Description adds no additional meaning beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states the action (check status), the resource (on/off-ramp order), and the unique identifier (partnerOrderId). It distinguishes itself from sibling tools like create_offramp_session and create_onramp_session.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use this tool versus alternatives. Usage is implied as checking order status after creation, but no conditions, prerequisites, or exclusions are mentioned.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_quoteGet a free quoteA
Read-onlyIdempotent
Inspect

Free quote before paying: exchange rate, total fees (all itemised, incl. the 1% service commission), and amount received. Quotes are indicative, not guaranteed. side=SELL (USDC->fiat) or BUY (fiat->USDC).

ParametersJSON Schema
NameRequiredDescriptionDefault
sideNoSELL = USDC to fiat, BUY = fiat to USDCSELL
networkNoUSDC network, default base
fiatAmountNoFiat amount (for BUY)
cryptoAmountNoUSDC amount (required for SELL)
fiatCurrencyNoe.g. EUR, default EUR

Output Schema

ParametersJSON Schema
NameRequiredDescription
noteNoHuman-readable caveat (quotes are indicative)
rateYesExchange rate used (fiat per USDC)
sideYesQuote direction
networkNoUSDC network the quote assumes
youSendYesAmount the sender pays, e.g. '50 USDC'
totalFeeYesTotal fees in fiat, all itemised (incl. the 1% service commission)
youReceiveYesAmount received after all fees, e.g. '44.6 EUR'
feeBreakdownYesProvider's itemised fee list
paymentMethodNoSettlement method, e.g. sepa_bank_transfer
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Beyond annotations (readOnlyHint, idempotentHint), description adds that quotes are indicative and not guaranteed, and discloses the 1% service commission, enhancing transparency.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences, front-loaded purpose, no extraneous words—efficient and clear.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given output schema exists, description adequately explains tool output (rates, fees) and side parameter usage; no gaps.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema covers all 5 params with descriptions (100% coverage); description repeats side semantics but adds no new information beyond schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states the tool provides a free quote with exchange rate, total fees, and amount received, distinguishing it from sibling tools like call_service or create_session.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Implicitly advises using before paying ('Free quote before paying'), but no explicit when-not-to-use or alternative tools are mentioned.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_serviceGet a marketplace service's detailA
Read-onlyIdempotent
Inspect

Full detail for one FiatDock marketplace listing, including how to call it: PAID listings route through the gateway via call_service (the 99/1 split is enforced); FREE/first-party listings expose their real MCP endpoint to call directly. Read-only, free.

ParametersJSON Schema
NameRequiredDescriptionDefault
idYesListing id (svc_…) from search_services

Output Schema

ParametersJSON Schema
NameRequiredDescription
idYesListing id (svc_…) — pass to get_service / call_service
nameYesService name
tagsNoFree-text tags
feeBpsNoEffective gateway commission in basis points right now: 0 during the seller's first-month launch waiver (buyer pays the FULL price directly to the seller), else 100 (1%). PAID listings only (ADR-0022).
ratingNoVerified-purchase rating aggregate: { count, average (1-5) }
statusNoListing status: pending | verified | suspended
installNoReady-to-use local launch spec for stdio listings (npx -y <package>)
reviewsNoRecent verified-purchase reviews, newest first
summaryNoOne-line summary
callHintNoPlain-language instruction for how an agent invokes this listing
categoryNoCategory slug (data, search, finance, dev, productivity, ai, web, other)
networksNoChain slugs the service settles on
priceUsdYesPrice per call in US dollars (0 = free)
sellerIdNoOpaque seller id that owns the listing
verifiedYesVerified seller (KYC + active badge) or first-party (platform-vouched)
createdAtNoISO 8601 listing creation time
firstPartyNoPlatform's own featured listing (official)
gatewayUrlYesHow to reach it: a relative /s/:id (PAID — invoke via call_service, 99/1 split) OR an absolute MCP endpoint URL (FREE/first-party — call directly). null for stdio (npm package) listings — run those locally instead
sellerNameNoSeller display name, if set
descriptionNoFull description
listingTypeNo"http" (hosted Streamable-HTTP endpoint) or "stdio" (an npm package agents run locally via npx; always free, not remotely callable)
mcpEndpointNoReal MCP endpoint — present only for FREE/first-party (direct) listings
packageNameNonpm package name — present only on stdio listings; install with npx -y <packageName>
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint, openWorldHint, and idempotentHint. The description adds behavioral context about the 99/1 split enforcement and that the tool is read-only and free, which is valuable beyond annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three concise sentences, each serving a distinct purpose: stating the function, providing usage guidance, and noting traits. No unnecessary words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the simple input schema (1 parameter), presence of output schema, and rich annotations, the description provides complete context including business logic and differentiation from sibling tools.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with a clear description for the id parameter. The tool description does not add additional semantic information about the parameter beyond what the schema provides.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it retrieves full details for a FiatDock marketplace listing, explicitly distinguishing between paid and free listings and referencing the sibling tool call_service.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It explicitly instructs when to use this tool versus call_service: paid listings route through call_service, while free/first-party listings are called directly, providing clear usage guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

search_servicesSearch the FiatDock marketplaceA
Read-onlyIdempotent
Inspect

Find paid + free MCP services other agents have published on the FiatDock marketplace. Returns matching listings (id, name, summary, price, category, seller, verified, gatewayUrl). Use get_service for full detail and call_service to invoke one. Read-only, free.

ParametersJSON Schema
NameRequiredDescriptionDefault
qNoFree-text search over name, summary, description and tags
sortNoSort order (default newest; first-party listings are always featured first)
categoryNoFilter by category slug: data, search, finance, dev, productivity, ai, web, other
verifiedOnlyNoOnly verified listings (KYC'd seller or first-party)

Output Schema

ParametersJSON Schema
NameRequiredDescription
countYesNumber of listings returned
servicesYesMatching listings (first-party featured first)
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already provide readOnlyHint=true, openWorldHint=true, idempotentHint=true. The description adds return format and free status, but no extra behavioral nuance beyond annotations. No contradiction.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences, no fluff. First sentence states purpose, second provides sibling guidance and notes read-only/free. Very concise.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With 4 optional well-documented parameters, output schema, and annotations covering behavioral traits, the description is complete. It tells what it does, returns, and how to use siblings.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so description does not need to add parameter info. The description does not elaborate on parameters beyond schema, meeting baseline.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'Find', the resource 'MCP services on FiatDock marketplace', and specifies returned fields. It also distinguishes from siblings (get_service for details, call_service to invoke).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly says when to use this tool (search) and when to use alternatives (get_service for full detail, call_service to invoke). Also notes read-only and free nature.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

stablecoin_intelStablecoin intelligence ($0.002)A
Read-onlyIdempotent
Inspect

PAID ($0.002 USDC via x402). Supply, peg health and per-chain breakdown for USDC and other stablecoins: total circulating supply, deviation from the $1.00 peg, peg mechanism, the amount circulating on Base (with its share of total) and the top chains by supply (DefiLlama). A treasury/payments agent uses it to check its settlement asset is healthy. Without payment this returns the 402 challenge; the fiatdock-mcp npm package pays automatically.

ParametersJSON Schema
NameRequiredDescriptionDefault
assetNoStablecoin symbol (default USDC), e.g. USDC, USDT, DAI, USDe

Output Schema

ParametersJSON Schema
NameRequiredDescription
asOfYesISO 8601 time the snapshot was read
nameNoStablecoin full name
noteNoHuman-readable caveat about the snapshot, if any
assetYesStablecoin symbol
priceYesCurrent price in USD
onBaseYesCirculating supply on Base + its share of total
sourceYesData source (e.g. DefiLlama)
pegStatusYeson-peg | slight-deviation | off-peg | unknown
topChainsYesTop chains by circulating supply
pegMechanismNoe.g. fiat-backed, crypto-backed, algorithmic
pegDeviationPctYesAbsolute deviation from $1.00, %
totalCirculatingUsdYesTotal circulating supply (USD)
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already indicate readonly, open-world, and idempotent. The description adds critical behavioral details: it's a paid tool ($0.002 via x402), without payment returns a 402 challenge, and the npm package pays automatically. No contradictions with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is four sentences, front-loaded with payment notice, then functionality, then use case, then mechanism. It is reasonably concise but could be slightly tighter; however, all information earns its place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (paid, data retrieval, with output schema and rich annotations), the description covers purpose, payment, use case, and automatic payment handling. It is complete enough for an agent to select and invoke correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Only one optional parameter 'asset' with description in schema. Schema coverage is 100%, so the description adds no extra parameter meaning beyond what the schema already provides. Baseline score of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it provides stablecoin intelligence: supply, peg health, per-chain breakdown. It names specific metrics and a use case (treasury/payments agent). It distinguishes from sibling tools like token_price and token_safety, which cover different aspects.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives a clear use case: a treasury/payments agent checks settlement asset health. It also explains the payment mechanism and how the npm package handles it. It does not explicitly exclude alternatives, but the context is sufficient for selection.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

token_priceToken price & liquidity (free)A
Read-onlyIdempotent
Inspect

FREE real-time price snapshot for any EVM token by contract address: USD price, 5m/1h/6h/24h change, liquidity, 24h volume, market cap/FDV and the most-liquid DEX pair (DexScreener). Or pass a major symbol (ETH/BTC) for a Coinbase spot price. Read-only, free.

ParametersJSON Schema
NameRequiredDescriptionDefault
chainNoChain slug: base (default), ethereum, polygon, arbitrum, optimism, bsc, avalanche
tokenNoERC-20 contract address (0x…) — preferred
symbolNoMajor asset symbol (e.g. ETH, BTC) — used when no contract address is given

Output Schema

ParametersJSON Schema
NameRequiredDescription
asOfYesISO 8601 time the snapshot was read
nameNoToken name
noteNoHuman-readable caveat about the snapshot, if any
chainNoChain the quoted pair trades on
fdvUsdNoFully-diluted valuation in USD
sourceYesData source
symbolNoToken symbol
topPairNoThe most-liquid DEX pair used
priceUsdYesCurrent USD price (most-liquid pair)
recommendNoRecommended paid next step (token_safety) — present for contract-address lookups where a rug/honeypot check matters
priceChangeNoPercent price change by window
liquidityUsdNoPair liquidity in USD
marketCapUsdNoMarket cap in USD
volume24hUsdNo24h trading volume in USD
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint, openWorldHint, idempotentHint. The description adds valuable context: it is free, real-time, and sourced from DexScreener/Coinbase. No contradictions with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

A single sentence that front-loads key attributes (FREE, real-time, price snapshot) and efficiently lists all included data points and input methods. No wasted words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With an output schema present, the description does not need to detail return values. It covers all necessary context for a tool with 3 optional parameters, including data sources and input modes.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% and the description enhances parameter meaning: explains 'chain' as chain slug, 'token' as preferred ERC-20 address, 'symbol' as major asset fallback. It clarifies the input mode logic.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it provides a real-time price snapshot for EVM tokens via contract address or major symbol, listing specific data points (USD price, changes, liquidity, volume, market cap). It distinguishes itself from sibling tools by being free and focused on price.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly describes two usage modes: contract address for detailed DexScreener data or major symbol for Coinbase spot price. It implies when to use this tool, but does not explicitly mention when not to use or compare with siblings.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

token_safetyToken safety & rug check ($0.01)A
Read-onlyIdempotent
Inspect

PAID ($0.01 USDC via x402). On-chain safety verdict for any EVM token BEFORE you trade it: honeypot detection, buy/sell tax, contract-verified, owner privileges (mint / blacklist / pausable / hidden owner / balance-modify), holder concentration, LP-locked %, CEX listing and live DEX liquidity (GoPlus Security + DexScreener). Returns verdict safe|caution|danger with the exact risks. Without payment this returns the 402 challenge; the fiatdock-mcp npm package (AGENT_PRIVATE_KEY) pays automatically. Not financial advice.

ParametersJSON Schema
NameRequiredDescriptionDefault
chainNoChain slug: base (default), ethereum, polygon, arbitrum, optimism, bsc, avalanche
tokenYesERC-20 contract address (0x…) to screen

Output Schema

ParametersJSON Schema
NameRequiredDescription
asOfYesISO 8601 time the verdict was computed
nameNoToken name
noteNoHuman-readable caveat about the verdict, if any
risksYesEach detected risk: level (danger|caution), flag, detail
sourceYesData source (e.g. GoPlus Security + DexScreener)
symbolNoToken symbol
isProxyNoUpgradeable proxy contract
verdictYesOverall risk verdict
buyTaxPctYesBuy tax %
isHoneypotYesToken cannot be sold (honeypot)
isMintableNoSupply can be minted
sellTaxPctYesSell tax %
holderCountNoNumber of holders
lpLockedPctNoLiquidity-pool tokens locked, %
isOpenSourceYesContract source verified/open
liquidityUsdNoDEX liquidity in USD
topHolderPctNoTop holder's share of supply, %
verdictReasonYesPlain-language explanation of the verdict
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations indicate readOnly, openWorld, idempotent. Description adds cost ($0.01 USDC via x402), payment mechanism, automatic payment via npm package, and the behavior when unpaid (returns 402 challenge). States 'Not financial advice.' No contradictions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three sentences, front-loaded with key purpose and capabilities. Every sentence adds value: first explains what it does and returns, second covers payment and automation, third is disclaimer. No waste.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (multiple checks, payment integration), the description covers verdict, risk details, and payment flow. Output schema exists (mentioned in context) but not shown; description mentions return format. Adequate for an AI agent to invoke correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Input schema covers both parameters with 100% description coverage. Description adds default chain (base) but little else beyond schema. Baseline 3 is appropriate as schema does the heavy lifting.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool performs an on-chain safety verdict for EVM tokens before trading, listing specific checks (honeypot, tax, contract, owner privileges, etc.) and returns verdict safe|caution|danger. It distinguishes from siblings by focusing on risk assessment.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly says to use 'BEFORE you trade it' and mentions the payment requirement. Describes the 402 challenge without payment and how the npm package pays automatically. No explicit when-not-to-use, but context implies usage for token safety screening.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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